Chuse the correct ERGY s temperature B. M Molecules the 1 and bland 19. What is at 25°C for the followers COCO.(a) a. 21 b. 45.9 217 B_20. Choose the incorrea statement Gases have less entropy than their solids Solutions have more entropy than the solids dissolved. c. Gases have more entropy than the liquids d. Liquids have more entropy than there solids. Entropy of a substance increases as its temperature increases. 21. Which of the following statements is true? Spontaneous processes proceed without outside intervention b. A spontaneous reaction is a fast reaction. c. Only exothermic processes are spontaneous. d. All the statements are true. B 22. Which of the following processes is non-spontaneous? a. Salt dissolves in water b. Photosynthesis occurs C. Ice cream melts on a hot summer day d. Hot soup gets cold before it's served 23. The change in free energy for a reaction: a. predicts speed c. equals heat b. equals AH-TAS d. depends on the standard state chosen 24. In a sealed container, the rate of dissolving is equal to the rate of crystallization would expect: d. N a. AS=0 b. AGO C. AG = 0 25. A reaction is spontaneous if 1) AG is a negative value. 11) Both enthalpy and entropy increase. III) AH is negative and AS is positive. IV) Both enthalpy and entropy decrease. V) AH is positive AS is negative. a. III and IV b. I and 111 c.land 11

Answers

Answer 1

At 25°C, the following COCO has a value of 45.9kJ/mol. Entropy of a substance increases as its The free energy change (ΔG) for a chemical reaction is a measure of the amount of work that can be obtained from the reaction. Spontaneous processes proceed without outside intervention.

The statement that is true is the first statement. Salt dissolves in water is a spontaneous process. The change in free energy for a reaction is equal to ΔG = ΔH – TΔS. It depends on the standard state chosen. In a sealed container, the rate of dissolving is equal to the rate of crystallization would expect ΔG = 0. A reaction is spontaneous if ΔG is a negative value and both enthalpy and entropy increase.

The option with the correct statements is  I and III. What is entropy? Entropy is a measure of the energy that is unavailable for work in a thermodynamic system. It is a measure of the number of ways in which the energy of a system can be distributed among its molecules. The second law of thermodynamics states that the total entropy of an isolated system cannot decrease over time.

ΔG is related to the enthalpy change (ΔH) and the entropy change (ΔS) for the reaction by the equation: ΔG = ΔH – TΔS. A spontaneous reaction has a negative ΔG value.How do you determine if a reaction is spontaneous?The spontaneity of a chemical reaction can be determined by calculating the free energy change (ΔG) for the reaction. If ΔG is positive, the reaction is non-spontaneous. If ΔG is zero, the reaction is at equilibrium.

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Related Questions

Describing Tasks for Stationary Engineers Click this link to view O*NET’s Tasks section for Stationary Engineers. Note that common tasks are listed toward the top, and less common tasks are listed toward the bottom. According to O*NET, what are common tasks performed by Stationary Engineers? Check all that apply. observing and interpreting readings on gauges, meters, and charts managing financial resources to order supplies and equipment writing computer programs to control equipment testing boiler water quality or arranging for testing creating safety regulations after experimentation operating or tending stationary engines, boilers, and auxiliary equipment

Answers

Answer:

A, D, F

Explanation:

took on edge.

Answer:

The answer is A,D,F

A:observing and interpreting readings on gauges, meters, and charts

D:testing boiler water quality or arranging for testing

F:operating or tending stationary engines, boilers, and auxiliary equipment

Explanation:

I got all right on edge.

An engine starting system must crank or spin the engine until fuel _______ forces the pistons down and the engine begins to operate on its own power.

Answers

An engine starting system must crank or spin the engine until fuel ignites forces the pistons down and the engine begins to operate on its own power.

What is Engine?

Engine is a machine that converts energy into mechanical work. It is a device that takes an energy source, such as electricity, fuel, or solar power, and converts it into a form of energy that can be used to drive a machine, such as a car, truck, boat, or generator. Engines are used in almost all forms of transportation, from cars and trucks to boats and planes. They are also used in many industrial and commercial applications, such as manufacturing, power generation, and construction. Engines are composed of a number of components, including cylinders, pistons, valves, and a crankshaft. The pistons in the cylinders move up and down, creating energy that is then converted into movement that drives the crankshaft and ultimately powers the machine. Engines are usually powered by gasoline, diesel, or other fuels, although some can use electricity or solar power. They come in many different sizes and configurations, and are found in a variety of vehicles, from cars and motorcycles to boats and plane.

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An engine starting system must crank or spin the engine until fuel Combustion forces the pistons down and the engine begins to operate on its own power.

What is Combustion?

Combustion is a chemical reaction in which a substance reacts quickly with oxygen and produces heat. The original substance is referred to as the fuel, and the source of oxygen is referred to as the oxidizer. The fuel can be solid, liquid, or gas, but it is usually a liquid for aeroplane propulsion. Similarly, the oxidizer could be a solid, liquid, or gas, but for aeroplanes, it is usually a gas (air). A solid fuel and oxidizer are used in model rockets.

New chemical substances are formed during combustion from the fuel and the oxidizer. These substances are referred to as exhaust. The majority of the exhaust is caused by chemical reactions between the fuel and oxygen.

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Bending is defined as? A. the application of a load tending to distort a member in one direction. B. the application of opposing load with a very narrow specific area. C. the application of pushing load data application of pulling loads. E.application of twisting a load.

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Hi how are you today

20 points and brainliest is it A, B, C, D
Using your Greek roots and context clues, figure out the meaning of “fissures” in this sentence and select the best definition:

“Look at these recent fissures in the granite roof”

A. an opening made by splitting
B. a crack made from crushing
C. a line made from evaporation
D. a line made from sediment deposits

Answers

Answer:

B

Explanation:

Cruise Business Case: Part 1 The specialty cruise has a pirate theme and goes on fun missions. Cruise members become part of the crew. Use the following business rules for the cruise database: Each employee (cruise members and captain) have unique IDs. • There are two types of employees: crew and captain. You cannot be a crew member and a captain. • Only captains have a parrot • Each ship has at least 40 crew members • Each mission has a unique mission number with one or more ships • Provide all appropriate connectors. Employee Ships Employeeld EmployeeLastName Employee FirstName ShipID 2 ShipID ShipName ShipDescription 3 1 Ships Missions ShipID MissionID 4 Captain Crew ParrotID Employeeld ParrotName Parrot Color DependentID Employeeld DependentFirstName Missions MissionID Mission Name ScheduledDate QuotedPrice

Answers

Here is the ER diagram for the Cruise Business Case:

+-------------+          +-------------+

|   Employee  |          |    Ships    |

+-------------+          +-------------+

| EmployeeID  |          |   ShipID    |

| LastName    |          | ShipName    |

| FirstName   |          | Description |

| Type        |          +-------------+

| ParrotID    |<---------|     Crew    |

+-------------+          +-------------+

                         |   Captain   |

                         |  ParrotID   |

                         +-------------+

                               

+--------------+         +--------------+

|   Parrot     |         |  Dependents  |

+--------------+         +--------------+

| ParrotID     |<--------|  DependentID |

| ParrotName   |         |  FirstName   |

| Color        |         |  EmployeeID  |

+--------------+         +--------------+

+--------------+         +-------------+

|   Missions   |         | MissionShip |

+--------------+         +-------------+

| MissionID    |         | MissionID   |

| MissionName  |         | ShipID      |

| ScheduledDate|         +-------------+

| QuotedPrice  |

+--------------+

What is the explanation for the above response?


The tables and their relationships are as follows:

The Employee table stores information about all employees, including their EmployeeID, LastName, FirstName, Type (crew or captain), and ParrotID (if applicable).The Ships table stores information about all ships, including their ShipID, ShipName, and Description.The Crew and Captain tables are subtypes of the Employee table. The Crew table contains information specific to crew members, while the Captain table contains information specific to captains. The Captain table has a foreign key reference to the Parrot table to associate each captain with their parrot.The Parrot table stores information about all parrots, including their ParrotID, ParrotName, and Color.The Dependents table stores information about all dependents of employees, including their DependentID, FirstName, and EmployeeID.The Missions table stores information about all missions, including their MissionID, MissionName, ScheduledDate, and QuotedPrice.The MissionShip table is a junction table that links missions to the ships that are involved in them. It has foreign key references to both the Missions and Ships tables.Note that the Ships table has a one-to-many relationship with both the Crew and Captain tables, indicating that each ship can have many crew members and at most one captain. The Captain table has a one-to-one relationship with the Parrot table, indicating that each captain can have at most one parrot. The Employee table has a one-to-many relationship with the Dependents table, indicating that each employee can have many dependents. The Missions table has a many-to-many relationship with the Ships table through the MissionShip table, indicating that each mission can involve one or more ships, and each ship can be involved in one or more missions.

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A 5-m-long, 4-m-high tank contains 2.5-m-deep water when not in motion and is open to the atmosphere through a vent in the middle. The tank is now accelerated to the right on a level surface at 2 m/s2. Determine the maximum gage pressure in the tank. Mark that point at the interior bottom of the tank. Draw the free surface at this acceleration.

Answers

Answer: hello your question lacks the required diagram attached below is the diagram

answer :  29528.1  N/m^2

Explanation:

Given data :

dimensions of tank :

Length = 5-m

Width = 4-m

Depth = 2.5-m

acceleration of tank = 2m/s^2

Determine the maximum gage pressure in the tank

Pa ( pressure at point A )  = s*g*h1

    = 10^3 * 9.81 * 3.01

    = 29528.1  N/m^2

attached below is the remaining part of the solution

A 5-m-long, 4-m-high tank contains 2.5-m-deep water when not in motion and is open to the atmosphere
A 5-m-long, 4-m-high tank contains 2.5-m-deep water when not in motion and is open to the atmosphere

the relative humidity of atmospheric air for the case where the atmospheric air is at 25 °c and 100 kpa and the products are found to contain 9.57 kmol of water vapor per kmol of fuel burned.

Answers

The relative humidity of atmospheric air for the given case is 23.16%.

The atmospheric air is at 25°C and 100 kPa. The products contain 9.57 kmol of water vapor per kmol of fuel burned. We are to determine the relative humidity of atmospheric air for the given case. Solution: Relative humidity is the ratio of the partial pressure of water vapor in the air to the equilibrium vapor pressure of water at a given temperature.

The equilibrium vapor pressure is determined from the Clausius - Clapeyron equation. The partial pressure of water vapor in the air can be determined from the amount of water vapor present in the products. Let us first determine the equilibrium vapor pressure of water at 25°C. The following equation gives the equilibrium vapor pressure of water at any temperature T in degrees Celsius:log10Pv = A − B / (T + C)Where, Pv is the equilibrium vapor pressure of water in kPa, A = 8.07131,B = 1730.63, and C = 233.426.

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The products are found to contain 9.57 kmol of water vapor per kmol of fuel burned is 80.97%.

Given that :

the temperature of atmospheric air, T1 = 25°C

Pressure of atmospheric air, P1 = 100 kPa

Volume of atmospheric air, V1 = 1 kmol

The number of moles of water vapor in the product is n2 = 9.57 kmol of water vapor

The number of moles of fuel burned = 1 kmol of fuel burned

Assuming that all the water vapor comes from the combustion of the fuel, the number of moles of dry air will be equal

to the number of moles of atmospheric air minus the number of moles of water vapor present in the product: n1 - n2 = 1 - 9.57 = -8.57 kmol of dry air

Since 1 kmol of dry air occupies a volume of 24.045 m3 at standard temperature and pressure (STP) conditions, i.e., at 0°C and 101.325 kPa, the volume of the dry air can be calculated as:V1 - V2 = (1 kmol dry air) x (24.045 m3/kmol) = 24.045 m3

We can use the ideal gas law to determine the volume of the mixture of dry air and water vapor at the initial conditions:

PV = nRTV = (nRT)/PP = P1 = 100 kPaT = T1 = 25 + 273.15 = 298.15 KR = 8.314 J/(mol·K)

Therefore, the volume of the mixture of dry air and water vapor can be calculated as follows:V = (n1 + n2)RT/P = [(1 kmol dry air) + (9.57 kmol water vapor)] x (8.314 J/(mol·K)) x (298.15 K)/(100 kPa) = 29.786 m3

We can now use the definition of relative humidity to calculate the relative humidity of the atmospheric air:RH = (n2 x P1)/(P2 - n2 x P1) x 100%P2 = P1 + PwPw = n2RT/V = (9.57 kmol) x (8.314 J/(mol·K)) x (298.15 K)/(29.786 m3) = 78.697 kPaP2 = 100 + 78.697 = 178.697 kPa

Therefore, the relative humidity of atmospheric air is:RH = (9.57 kmol x 100 kPa)/(178.697 kPa - 9.57 kmol x 100 kPa) x 100%≈ 80.97 %

Hence, the relative humidity of atmospheric air for the case where the atmospheric air is at 25 °C and 100 kPa and the products are found to contain 9.57 kmol of water vapor per kmol of fuel burned is approximately 80.97%.

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what is the law of physics


10 points if you tell me the answer and your name

Answers

꧁༒Answer༒꧂

F=m•a

\(f = force\)

\(m = mass \: of \: an \: object\)

\(a = acceleration\)

Newton's second law is one of the most important in all of physics. For a body whose mass m is constant, it can be written in the form F = ma, where F (force) and a (acceleration) are both vector quantities. If a body has a net force acting on it, it is accelerated in accordance with the equation

Which of these adhesives will glue mdf to acrylic?

Answers

Bondtite Wood Adhesives is the best glue for pasting Acrylic Sheet to any wooden surface like Plywood , MDF, or WPC.

1. Make sure both surfaces are clear of dirt and other impurities (Oil, grease, dust, etc.).

2. Using a spreader, evenly apply Bondtite Acrylicfix on the plywood (base surface). Let the surface 8 to 10 minutes to dry.

3. Use a wet cloth to rub the acrylic sheet's backside on the second surface. Make sure there are no water droplets on the area that the adhesive will be sticking to. Avoid rubbing with wet towel during the rainy season.

4. To ensure a strong binding, bring the two surfaces together and apply uniform pressure using a roller, press machine, or dry cloth.

5. Use clamps, nails, tape, etc. to firmly hold the bonded surface together. Handling Strength can be attained in two to four hours.

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which of the following is true for an npn bjt ? select one: a. the base current consists of mostly holes b. a p-type base is sandwiched between an n-type emitter and an n-type collector c. current flows primarily because of electrons injected into the base d. all of these e. current flows when either vbe or vbc are positive voltages

Answers

For an NPN , the base current is primarily made up .

Which of the following statements is accurate about a npn transistor's active region?

The potential difference between the collector and the base is always less than 0.4 V, and the base current and collector current are directly proportional to one another.

What are two defining characteristics?

Based on the types of the three main terminals, can be divided into NPN and PNP types. An NPN transistor is made up of two semiconductor junctions with a thin p-anode region, and a PNP transistor is made up of two semiconductor junctions with a thin n- cathode region.

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when encapsulation in not available under class I conditions, the contractor or installer

Answers

When encapsulation is not available under class I conditions, the contractor or installer must use alternative methods to control asbestos exposure. may include isolation, enclosure, or removal of the asbestos-containing material.

The choice of method depends on the specific circumstances and conditions of the site. It is important to note that these methods may not be as effective as encapsulation in preventing the release of asbestos fibers into the air. Therefore, it is crucial that the contractor or installer takes appropriate measures to ensure the safety of workers and occupants during the process. This may include using personal protective equipment, implementing proper ventilation systems, and following established asbestos handling procedures.

Overall, it is important for contractors and installers to be knowledgeable about the risks and regulations associated with asbestos to ensure the safe and proper handling of this hazardous material.It has been demonstrated that isolation fosters divergent evolution that results in unique phenotypes. It is regularly found that populations with different morphologies can reproduce with one another, and the presence of reproductive isolation within morphologically recognised species suggests the existence of cryptic species.

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Someone claims that the volume flow rate in a circular pipe with laminar flow can be determined by measuring the velocity at the centerline in the fully developed region, multiplying it by the cross-sectional area, and dividing the result by 2. Do you agree

Answers

The answer is 6 because I just took the test!

Water flows around a 6-ft diameter bridge pier with a velocity of 12 ft/s. Estimate the force (per unit length) that the water exerts on the pier. Assume that the flow can be approximated as an potential fluid flow around the front half of the cylinder, but due to flow seperation, the average pressure on the rea half is constant and approximately equal to 1/2 the pressure at point A.

Answers

Answer: hello the diagram related to your question is missing please the third image is the missing part of the question

Fx = 977.76 Ib/ft

Explanation:

Estimate the force that water exerts on the pier

V = 12 ft/s

D( diameter ) = 6 ft

first express the force  on the first half of the cylinder  as

Fx1 =  - \(-2\int\limits^\pi _\frac{\pi }{2} {Ps*cos\beta *a} \, d\beta\)   ---------------- ( 1 )

where ; Fy = 0

Ps = Po + 1/2 Pv^2 ( 1 - 4 sin^2β )  ------------- ( 2 )

Input equation (2)  into equation ( 1 )         (note :  assuming Po = 0 )

attached below is the remaining part of the solution

Water flows around a 6-ft diameter bridge pier with a velocity of 12 ft/s. Estimate the force (per unit
Water flows around a 6-ft diameter bridge pier with a velocity of 12 ft/s. Estimate the force (per unit
Water flows around a 6-ft diameter bridge pier with a velocity of 12 ft/s. Estimate the force (per unit
Water flows around a 6-ft diameter bridge pier with a velocity of 12 ft/s. Estimate the force (per unit

Steam at a pressure of 0.08 bar and a quality of 93.2% enters a shell-and-tube heat exchanger where it condenses on the outside of tubes through which cooling water flows, exiting as saturated liquid at 0.08 bar. The mass flow rate of the condensing steam is 3.43 x 10^5 kg/h. Cooling water enters the tubes at 15.8°C and exits at 35.8°C with negligible change in pressure.
1. Neglecting stray heat transfer and ignoring kinetic and potential energy effects, determine the mass flow rate of the cooling water, in kg/h, for steady-state operation.

Answers

Answer:

The answer is "\(\bold{9.09\times 10^6 \frac{kg}{hour}}\)".

Explanation:

For the reference table we get:

\(h1 = 2410 \frac{kJ}{kg} \ , at \ \ \\\\ \ P = 0.08 \ bar \ and \ \ quality = 0.932\)

Through steam tables, they get:

\(\ h2 = 173.9 \frac{kJ}{kg} \ on\\\\ \ P = 0.08 \ bars \ \ \ but \ quality = 0 (sat.liquid),\)

Water power transfer = \(\ 3.4 \times 10 ^ 5 \times (2410-173.9)\\\)

It should be comparable to the water enthalpy:

\(m_{water}\times Cp\times (T2-T1)\\\\For \ eg:\\\\ = 3.4 \times 10 ^ 5\times (2410-173.9) \\\\ = m_{water}\times4.18\times(35-15)\\\)  

\(m_{water}=9.09\times 10^6 \frac{kg}{hour}\)

1.What is three phase? why it is needed?
2. What is the condition to be balanced? Write down voltage equation of a balanced 3 phase voltage source and draw their phasor diagram.

Answers

1. We can see here that three phase refers to a type of electrical power transmission that uses three alternating current (AC) waveforms that are 120 degrees out of phase with each other. This is different from single-phase power transmission, which uses only one AC waveform.

What is voltage?

Voltage, also known as electric potential difference, is a measure of the electrical potential energy per unit of charge in an electrical circuit. It is defined as the amount of work required to move a unit of electric charge between two points in a circuit, typically measured in volts (V).

Three-phase power is needed because it allows for more power to be transmitted over a given amount of wire or cable. With three-phase power, the power is delivered in a more consistent manner, which means that there is less voltage drop over long distances.

2. In order for a three-phase system to be balanced, the three phases must have the same amplitude and be 120 degrees out of phase with each other. The voltage equation of a balanced three-phase voltage source is given by:

Vph = Vline / √3

where Vph is the phase voltage and Vline is the line voltage. The phasor diagram for a balanced three-phase system shows three sinusoidal waveforms that are displaced by 120 degrees from each other.

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Please help me it’s for science I only have a few minutes

Please help me its for science I only have a few minutes

Answers

Answer:

Rocks

Explanation:

I am not sure tho bc they are made out of coal and I think coal is a kind of rock

Answer:

I'm taking a guess for ya I shall say Metal or and Minerals

Explanation:

Good luck

The evaporator:
A. directs airflow to the condenser.
B. absorbs heat from the passenger compartment.
C. removes moisture from the refrigerant.
D. restricts refrigerant flow.

The evaporator:A. directs airflow to the condenser.B. absorbs heat from the passenger compartment.C.

Answers

Answer:

Option B

Explanation:

An evaporator along with  cold low pressure refrigerant absorbs heat from the air within the passenger compartment thereby supplying cool air for the occupants.

Hence, option B is correct

A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of freeway, the directional peak-hour volume is 3800 vehicles with 2% large trucks and 4% buses (no recreational vehicles), the peak-hour factor is 0.90, and all drivers are regular users. The lanes are 12 ft wide, there are no lateral obstructions within 10 ft of the roadway, and the total ramp density is 1.0 ramps per mile. A bus strike will eliminate all bus traffic, but it is estimated that for each bus removed from the roadway, seven additional passenger vehicles will be added as travelers seek other means of travel. What are the density, volume-to-capacity ratio, and level of service of the upgrade segment before and after the bus strike?

Answers

Answer:

a) Density of the road segment

i) Before bus strike = 23.02 pc/mi/In

ii) after bus strike = 25.76 pc/mi/In

b) Volume to capacity ratio

i) Before bus strike = 0.69

ii) After bus strike = 0.78

C) level of service of the upgrade segment

i) Before bus strike = LOS C

ii) after bus strike = LOS D

Explanation:

a) Density of the road segment

i) before bus strike ( D1 )

 D1 = 1662 / 72.18  = 23.02 pc/mi/In

ii) After bus strike ( D2 )

D1 = 1859 / 72.18 = 25.76 pc/mi/In

b) Volume to capacity ratio

i) Before bus strike ( v 1 )

V1 = 1662 / 2400 = 0.69

ii) After bus strike ( V2 )

V2 = 1859 / 2400 = 0.78

C) level of service of the upgrade segment  ( Gotten from " LOS Criteria for basic freeway segments " )

i) Before bus strike =  ( LOS C )

ii) After bus strike  = LOS D

Attached below is the detailed solution to the question above

A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of
A 5% upgrade on a six-lane freeway (three lanes in each direction) is 1.25 mi long. On this segment of

Developer wishes to construct an office building of 10,000m2 gross floor area, of which 8,000 m2will be available for letting. The construction costs are estimated to be $6,000/m2. In addition, there are ancillary construction costs of $400,000 in laying roads and sewers to the building. Professional fees are estimated to total 13% of construction costs. Short-term finance is available at 16%. The expected rent is $3,000/m2 p.a. net. The developer wishes to see a return for risk and profit of 20% of development value. The pre-contract period is expected to be 6 months, the building work is estimated to take 15 months, and a period of 3 months has been allowed for letting. The developer intends to sell the completed and fully let development to a financial institution, and it is anticipated that an initial yield of 7% will be required. Within these parameters, the value of the site has to be established.

Answers

The value of the site is $10,472,000.

Here are the calculations:

The total construction costs are:

$6,000/m2 * 10,000m2 + $400,000 = $64,000,000

The professional fees are:

$64,000,000 * 0.13 = $8,320,000

The total development costs are:

$64,000,000 + $8,320,000 = $72,320,000

The developer's return for risk and profit is:

$72,320,000 * 0.20 = $14,464,000

The total cost of the development is:

$72,320,000 + $14,464,000 = $86,784,000

The expected rent is:

$3,000/m2 * 8,000m2 * 12 months = $28,800,000

The initial yield is:

$28,800,000 * 0.07 = $2,016,000

The value of the site is:

$86,784,000 - $2,016,000 = $10,472,000

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Briefly explain thermal expansion using the potential energy–versus–interatomic spacing curve.

Answers

As the temperature of the material increases, the potential energy of the molecules increases. Thermal expansion occurs due to changes in temperature, and interatomic distances increase as potential energy increases.

What are the uses of Thermal Expansion?

Thermal expansion is used in a variety of applications such as rail buckling, engine coolant, mercury thermometers, joint expansion, and others.

It is to be noted that an application of the concept of liquid expansion in everyday life concerns liquid thermometers. As the heat rises, the mercury or alcohol in the thermometer tube moves in only one direction. As the heat decreases, the liquid moves back smoothly.

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how does a motion sensor work?

Answers

Answer:

A motion sensor uses one or multiple technologies to detect movement in an area. When a sensor detects motion, it sends a signal to your security systems control panel, which connects to your monitoring panel system. This alerts you and the monitoring center to a potential threat in your home.

Hope It Helps You................

If a bearing needs 4. 0 s to solidify enough for impact, how high must the tower be?.

Answers

The height of the tower is equal to 78.4 meters.The bearing's impact velocity is equal to 39.2 m/s.

How to determine the height of the tower?

In order to determine the height of the tower, we would apply the second equation of motion and assume that the downward motion is negative.

Mathematically, the second equation of motion is given by this formula:

S = ut + ½gt²

Where:

S represents the distance or height.u represents the initial velocity.a represents the acceleration.t represents the time.

Substituting the given parameters into the formula, we have;

S = S₀ + ut - ½gt²

0 = S₀ + (0)4.0 - ½ × (9.8) × 4.0²

0 = S₀ - 4.9 × 16.0

Height, S₀ = 78.4 meters.

How to calculate the bearing's impact velocity?

In order to calculate the bearing's impact velocity, we would apply the first equation of motion:

V = u - at

V = 0 - 9.8(4.0)

Impact velocity, V = 39.2 m/s.

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Complete Question:

Ball bearings can be made by letting spherical drops of molten metal fall inside a tall tower, called a shot tower, and solidify as they fall.

a. If a bearing needs 4.0 s to solidify enough for impact, how high must the tower be?

b. What is the bearing's impact velocity?

4.6. What is the maximum peak output voltage and current if the supply voltages are changed to +15 V and -15 V.​

4.6. What is the maximum peak output voltage and current if the supply voltages are changed to +15 V

Answers

The maximum peak output voltage and current if the supply voltages are changed to +15 V and --1V will be 15V and 0.1A.

How to calculate the current?

From the information given, the supply voltages are +15V and -15V. The maximum peak output voltage will be 15V.

The maximum peak current will be:

= 15/150

= 0.1A

In conclusion, the maximum peak output voltage and current will be 15V and 0.1A.

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Two cars are traveling on level terrain at 55 mi/h on a road with a coefficient of adhesion of 0.75. The driver of car 1 has a 2.3-s perception/reaction time and the driver of car 2 has a 1.9-s perception/reaction time. Both cars are traveling side by side and the drivers are able to stop their respective cars in the same distance after first seeing a roadway obstacle (perception and reaction plus vehicle stopping distance). If the braking efficiency of car 2 is 0.80, determine the braking efficiency of car 1. (Assume minimum theoretical stopping distance and ignore aerodynamic resistance.)

Answers

Answer:

0.981

Explanation:

velocity  of cars ( v1 , v2 )  = 55 mi/h

coefficient of adhesion ( u ) = 0.75

Reaction time of driver of car 1 = 2.3 -s

Reaction time of driver of car 2 = 1.9 -s

breaking efficiency of car 2 ( n2 ) = 0.80

Determine the braking efficiency of car 1

First determine the distance travelled during reaction time ( dr )

dr = v * tr ------- ( 1 )

tr ( reaction time )

v = velocity

note : 1 mile = 1609 m ,  I hour = 60 * 60 secs

back to equation 1

for car 1

dr1 =( 55 * 2.3 * 1609 ) / ( 60 * 60 )

    = 56.53 m

for car 2

dr2 = ( 55 * 1.9 * 1609 ) / ( 60 * 60 )

   = 46.70 m

next we calculate the stopping distances  ( d ) using the relation below

ds = d + dr

 d = distance travelled during break

 dr = distance travelled during reaction time

where : d = \(\frac{v^2intial}{2ugn}\)

for car 1

d1 = \(\frac{(55)^2}{2*0.75*9.81* n1} * (\frac{1609}{3600} )^2\)

∴ d1 = \(\frac{41.10}{n1}\)

for car 2

d2 = \(\frac{(55)^2}{2*0.75*9.8*0.8} * (\frac{1609}{3600} )^2\)

∴ d2 = 51.38

since the stopping distance for both cars are the same

d1 + dr1 = d2 + dr2

( 41.10 /n1 ) + 56.53 = 51.38 + 46.70

solve for n1

hence n1 = 0.981 ( braking efficiency of car 1 )

I want to solve the question

I want to solve the question

Answers

Answer:

yes.

Explanation:

When my animal is to old to physically carry her baby what process can I use to still produce her young from her

Answers

Taking care of" is a very human term in the sense of care giving, but so is "parents", because animals do not retain family structures in the form humans do. The vast majority of animals do not recognize family members. Among predators, an aging parent, such as the male lion in a pride, would continue to be taken care of by the females just as they always were, until a stronger outside male ousted it. An aging silverback in a group of gorillas would eventually be challenged and overthrown by one of his sons. When the elder became too infirm to care for itself, it would go off by itself to die. The only animal species that modify their behavior due to familial bonds to accommodate the needs of an aging member of the family are Cetaceans (whales) and Pachyderms (elephants). Whales have been seen to bouy up an ailing member of the pod (an extended family) to keep it from sinking. Elephants have the closest family ties of all animals, the eldest surviving female, the Matriarch of a herd, might be the great, great, great grandmother to the youngest and the others in varying relationships, are mothers, grandmothers, children, sisters, aunts and cousins, the older always taking care of and sheltering the younger. They also shelter and accommodate the older. If one member is sick or too old to keep up, the rest of the herd will slow down to allow the lagging one to keep up. This "caring" behavior has its limitations. The herd will not endanger itself to stay with an ailing member who will never be able to keep up. However, when the Matriarch herself is dying of old age, and the herd is in an area where food and water are abundant, the rest of the herd will stay with her, comfort her with their trunks, caressing her, talking to her, vocalizing over her, never leaving her side. While some are foraging, there will always be a group around her comforting her and expressing their love. (Scientists used to dismiss that term as inapplicable to animals, but the evidence is overwhelming that higher animal species have the same emotions humans do.) The herd will remain with her body, mourning, for several days, and years later will still return to fondle her bones with their trunks. Eventually one of the Matriarch's daughters will be chosen as the one to follow, or even two in which case the herd would divide into two new herds, the daughters and their offspring of each new Matriarch following their own family line.
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Related Questions (More Answers Below)

Your "visual lead time" on the highway should be about 15 seconds.

Answers

Visual lead time on the highway is important as it helps a driver avoid collisions and makes safe driving possible. A visual lead time of 15 seconds is usually recommended for highway driving. This means that you should be able to see about 15 seconds ahead of your current position while driving.

A visual lead time of 15 seconds allows you to have enough time to react to any potential hazards or changes in traffic flow. This lead time can vary depending on road conditions, speed, and weather. If you are driving at high speed or in poor weather conditions such as heavy rain or fog, your visual lead time should be longer than 15 seconds to ensure safety.

In addition to visual lead time, it's also important to maintain a safe distance between your vehicle and the vehicle in front of you. The general rule of thumb is to stay at least one car length behind for every 10 mph you are driving. This means if you are driving at 60 mph, you should maintain a distance of at least six car lengths from the vehicle in front of you.

In conclusion, maintaining a visual lead time of 15 seconds while driving on the highway and maintaining a safe distance between your vehicle and other vehicles is crucial for safe driving.

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Question # 3
Multiple Choice
Which events significant to the United States transportation industry occurred in the 1970s and 1980s?


A.The FCC was created.

B.Laws to begin regulating pipeline transportation were enacted.

C.Many transportation industries were deregulated.

D.The regulation of transportation industries began.

Answers

i believe the answer is c

Answer:

c Many transportation industries were deregulated.

Explanation:

correct on edge 2022

What output will come for the expression (4.00/(2.0+2.0)) answer​

Answers

the answer for the question that you have asked on this website formally known as brainly is 1

Example 12: Write an algorithm and draw a flowchart to calculate
the factorial of a number(N). Verify your result by a trace table by
assuming N = 5.
Hint: The factorial of N is the product of numbers from 1 to N)​

Answers

Answer:

An algotherum is a finite set of sequential instructions to accomplish a task where instructions are written in a simple English language

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