A window air conditioner uses 1074 W of electricity and has a coefficient of performance of 3.49. For simplicity, let's assume that all of that electrical energy is transformed into work done by the air conditioner to cool a room with dimensions of 7 m times 7 m times 3 m. The air inside this room will initially have the same temperature as the air outside (316 K) and the air conditioner will attempt to cool the room to 295 K. For the purposes of estimation, assume that the air in this room will be cooled at constant volume, that the specific heat of the air at constant volume is 720 J/kg-K, and that the density of the air is 1.2 kg/m^3.

How much energy must be transferred out of this room in order to decrease the temperature of the air from 316 K to 295 K? ___________

How much work will be done by the air conditioner during the process of cooling the room? ___________

How much time in minutes will it take for the room to cool using this air conditioner? _________________

How much time in minutes would the cooling process take if instead we used an air conditioner that uses a Carnot cycle that operates between 316 K and 295 K? ____________

Answers

Answer 1

The Energy to be transferred out is given as 2,676,096 J

How to solve

Volume of room = 7m * 7m * 3m = 147m³

Mass of air = 147m³ * 1.2kg/m³ = 176.4kg

Energy = mass * specific heat * temperature change = 176.4kg * 720J/(kg*K) * (316K - 295K) = 2,676,096 J

Work done by the air conditioner:

Work = Energy / Coefficient of Performance = 2,676,096J / 3.49 = 767,207 J

Time for the air conditioner:

Power = Work / Time

Time = Work / Power = 767,207J / 1,074W = 715 seconds or 11.9 minutes

Time using Carnot cycle air conditioner:

Carnot efficiency = 1 - (295K/316K) = 0.0664

Work = 2,676,096J / 0.0664 = 40,305,542 J

Time = 40,305,542J / 1,074W = 37,528 seconds or 625.5 minutes

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Related Questions

Click this link to view O*NET’s Work Styles section for Human Resources Managers. Note that common work styles are listed toward the top and less common work styles are listed toward the bottom. According to O*NET, what are common work styles needed by Human Resources Managers? Select three options.

Answers

Answer:

there's no link to click. However, I can provide the common work styles needed by Human Resources Managers according to O*NET:

1. Integrity

2. Dependability

3. Leadership

4. Self-Control

5. Attention to Detail

6. Cooperation

7. Adaptability/Flexibility

8. Initiative

9. Stress Tolerance

10. Achievement/Effort

Note that the order of these work styles may vary depending on the source and context.

Explanation:

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on a balance sheet, a corporation's economic obligations to nonowners are called? a. owner's equity b.liabilities c.assets d. retained earnings

Answers

On a balance sheet, a corporation's economic obligations to nonowners are called liabilities.

It results in the company’s upcoming days sacrifices aiming for economical benefits to other entities or businesses.

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A large plane wall has a thickness L=50 cm and thermal conductivity k = 25 W/m. K. On the left surface (x = 0), it is subjected to a uniform heat flux q_0 while the surface temperature T_0 is constant. On the right surface, it experiences convection and radiation heat transfer while the surface temperature is T_6 =225 degree C and the surroanding temperature is 25 degree C. The emissivity and the convection heat transfer coefficient on the right surface are 0. 7 and 15 W/m^2. K, respectively, (a) Obtain the variation of temperature in the wall (T(x) in terms of Also determine the value of heat flux (q_n) and the temperature of the left surface of the wall (at x = 0)

Answers

The variation of temperature in the wall is T(x)= (q_0x) /(kL) + T_0. The heat flux q_n is -28.1 W/m^2 and the temperature of the left surface of the wall is T_0 = 300 degree C.

B. To obtain the variation of temperature in the wall, we need to use the heat conduction equation, which states that the rate of heat flow through a solid is proportional to the temperature gradient.

The equation is given by q_x = -kdT/dx. Since we know the heat flux q_0 at the left surface, we can integrate this equation from x = 0 to x = L to obtain the temperature distribution T(x) in terms of q_0 and the thermal conductivity k.

On the right surface, we can use the equation for heat transfer by convection and radiation, which is given by

q_n = h(T_6 - T_surrounding) + esigma(T_6^4 - T_surrounding^4)

where h is the convection heat transfer coefficient, e is the emissivity, sigma is the Stefan-Boltzmann constant, T_6 is the surface temperature and T_surrounding is the surrounding temperature.

Plugging in the given values we can find out the value of heat flux q_n and the temperature of the left surface of the wall (at x = 0).

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A particle of mass m=4 kg is moving along a guide wire with shape given by y(x)=−4sin(2. 5x) m, where x is in meters. The particle's horizontal velocity component is a constant vx=−4 m/s and gravity →g=−9. 8^ȷ m/s^2 acts vertically. What is the force →Fw of the wire on the particle when x=12 m?A particle of mass m


4 kg is moving along a guide wire with shape given by y(r)- -4sin(2. 5x) m, where


is in meters. The parti

Answers

To determine the force of the wire on the particle when x = 12 m, we need to consider both the gravitational force acting on the particle and the normal force exerted by the wire.

1. Gravitational Force:

The gravitational force acting on the particle can be calculated using the formula:

Fg = m * g

Where:

Fg is the gravitational force,

m is the mass of the particle, and

g is the acceleration due to gravity.

Given:

m = 4 kg (mass of the particle)

g = -9.8^ȷ m/s^2 (acceleration due to gravity, negative because it acts vertically)

Substituting the values, we have:

Fg = 4 kg * (-9.8^ȷ m/s^2) = -39.2^ȷ N

2. Normal Force:

The normal force is the force exerted by the wire perpendicular to the wire's surface. It counteracts the vertical component of the gravitational force to keep the particle on the wire.

To calculate the normal force, we need to consider the net force acting in the vertical direction. Since the particle moves along the guide wire, it stays in contact with the wire, which means the net force in the vertical direction is zero. Therefore, the normal force is equal in magnitude but opposite in direction to the vertical component of the gravitational force.

Since the guide wire is given by the equation y(x) = -4sin(2.5x), we can determine the vertical displacement of the particle at x = 12 m:

y(12) = -4sin(2.5 * 12) = -4sin(30) = -4 * 0.5 = -2 m

The vertical component of the gravitational force is equal to the weight of the particle, which is given by:

Fg_vert = m * g_vert

Where:

Fg_vert is the vertical component of the gravitational force,

m is the mass of the particle, and

g_vert is the vertical component of the acceleration due to gravity.

Since g_vert = -g (opposite direction), we have:

Fg_vert = m * (-g) = -m * g

Substituting the values, we have:

Fg_vert = 4 kg * (-9.8 m/s^2) = -39.2 N

Therefore, the normal force exerted by the wire is:

Fn = -Fg_vert = 39.2 N

3. Force of the Wire:

The force of the wire on the particle is the vector sum of the gravitational force and the normal force:

Fw = Fg + Fn

Substituting the values, we have:

Fw = -39.2^ȷ N + 39.2^ȷ N = 0 N

Thus, when x = 12 m, the force of the wire on the particle is zero. This means that the wire is not exerting any horizontal force on the particle at that particular position along the guide wire.

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in mining auxiliary operations are the supplementry steps that support the production cycle . elucidate the auxiliary operations of underground mining?

Answers

Answer:

The answer is below

Explanation:

The mining auxiliary operations in underground mining involve various activities that are important for a successful mining operation particularly in the areas of productive operating conditions.

The activities involved in the auxiliary operations in underground mining include the following: ventilation, haulage, drainage, power supply, lighting, delivery of compressed air, water, supplies to the working sections, and communications.

When measuring a Brake Drum, the Brake Micrometer is set to a Base Drum Diameter of 10 Inches plus four notches, and the dial reads 22. What is the diameter of this drum

diameter of this drum?

Answers

Answer:

10.5

Explanation:

Measuring a Brake Drum, the Brake Micrometer is set to a Base Drum Diameter of 10 Inches plus four notches, and the dial reads 22.  Diameter of the drum is 10.5.

What is diameter?

Any straight line segment that cuts through the center of a circle and has ends that are on the circle is considered a circle's diameter in geometry. It is also known as the circle's longest chord.

The diameter of a sphere can be defined using either of the two methods. In more recent usage, the diameter can also refer to a diameter's length, or displaystyle d.

As opposed to a diameter, which refers to the line segment itself, one uses the term "diameter" in this context since all diameters of a circle or sphere have the same length, which is equal to twice the radius "displaystyle r.

Therefore, Measuring a Brake Drum, the Brake Micrometer is set to a Base Drum Diameter of 10 Inches plus four notches, and the dial reads 22.  Diameter of the drum is 10.5.

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Question #2
The Hands Free GA Law pertains to which of the following:

All drivers regardless of age.


Older Drivers


Drivers under the age of 21


Drivers over the age of 21
Question #3
Georgia's Move-Over Law requires drivers to:

Stay in the right lane if driving a tractor-trailer.


Move vehicles out of the lanes of traffic following a crash.


Move over at least one lane away from an emergency vehicle that is stationary, or if unable to move over, slow down below the speed limit.
Question #4
If you are involved in a crash, one of the immediate requirements is to:

Notify the Secretary of State's Office.


Notify your insurance agent.


Render aid to the injured.
Question #5
What should you do when you see a flashing yellow traffic signal at the next intersection?

Come to a complete stop before proceeding.


Speed up before the light changes to red.


Slow down and proceed with caution.
Question #6
Where does the licensed driver riding with a permit holder need to ride in the vehicle?

In the front passenger seat.


In the backseat directly behind the driver.


Anywhere they choose.
Question #7
You are driving behind a motorcycle and want to pass. You must:

Blow your horn to make the motorcycle move onto the shoulder so that you can pass.


Stay in the right lane as much as possible, because the motorcycle is small and doesn't use all of the lane.


Have your vehicle entirely into the left lane before and during the pass.
Question #8
All children ages 8 up to 18 are required to ride:

Secured in a safety belt or child safety seat.


In the front seat of the vehicle.


In the backseat of the vehicle.
Question #9
Streets and highways are most slippery:

When they are clean and dry.


When it has been raining hard for several hours.


Just after it starts to rain.
Question #10
Driving requires your full attention:

True


False
Question #11
It is more dangerous to drive at night than in daytime, because:

Your reaction time is slower at night.


You cannot see as far ahead at night.


The road is more slippery at night.

Answers

Answer: This is true, including the top, because I myself have used this info

Explanation:

ký hiệu của vật liệu cơ khí

Answers

Answer:

by hìuuf5ëcz

Explanation:

6tgiïuggd

Why did you choose agricultural and biosystem as a course? Help me guys

Answers

Answer:

To be able to develop as a human and give back to the community. To ensure that people have safe food and water to drink, clean fuel and energy sources, and in general a safe enviornment to live in.

Explanation:

The reasons why someone might choose to study agricultural and biosystems engineering are highly individual and can depend on a variety of factors, such as personal interests, career goals, and educational background.

What is agricultural and biosystem engineering?

Many students who decide to study agricultural and biosystems engineering are interested in farming, making food, and sustainable agriculture. They might want to find new ways to make more food or improve how farmers work.

Agricultural and biosystems engineering is a field that focuses on creating systems and processes that are good for the environment.

Students who care about the environment may decide to learn about this subject because it focuses on reducing waste, saving resources, and causing less harm to the environment.

Agricultural and biosystems engineering is a field that combines different areas of knowledge such as biology, chemistry, physics, and computer science. Students who like to work in different subjects might find this field perfect for their interests and abilities.

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Estimate the design-stage uncertainty in determining the voltage drop across an electric heating element. The device has a nominal resistance of 30 ? and power rating of 500 W. Available is an ohm meter (accuracy: within 0.5%; resolution: 1 ?) and ammeter (accuracy: within 0.1 % ; resolution: 100 mA). Recall E IR Hint: E- IR or in terms of power, P-PR

Answers

ΔV = 0.65 x 0.217 + 16.67 x 0.005 = 0.141 VSo, the design-stage uncertainty in determining the voltage drop across the electric heating element is 0.141 V.

Given that the nominal resistance of an electric heating element is 30 ohm and the power rating is 500 W. Also, available is an ohm meter (accuracy: within 0.5%; resolution: 1 ohm) and ammeter (accuracy: within 0.1 % ; resolution: 100 mA).The voltage drop across the electric heating element can be calculated using the formula: V = IR, where V is the voltage, I is the current and R is the resistance of the heating element.The current can be calculated using the power rating of the heating element using the formula: P = IV, where P is the power rating and I is the current.

So, I = P / VOn substituting the value of V = IR in the above formula, we get,I = P / RI = P / VRR = P / I

Using the given values,P = 500 W

Accuracy in ohm meter = 0.5%Resolution in ohm meter = 1 ohm

Accuracy in ammeter = 0.1%Resolution in ammeter = 100 mA

Using the above formula, R = P / IOn substituting the values of P and I, we getR = 500 / I

The accuracy of the ohm meter is within 0.5% which means that the resistance measured by the ohm meter can vary by a maximum of 0.5%. Therefore, the maximum value of uncertainty in resistance measured by the ohm meter is 30 x 0.5 / 100 = 0.15 ohm.The resolution of the ohm meter is 1 ohm, so the uncertainty due to the resolution of the ohm meter is 0.5 ohm (half of the resolution).Therefore, the total uncertainty due to the ohm meter is 0.15 ohm + 0.5 ohm = 0.65 ohm.The accuracy of the ammeter is within 0.1% which means that the current measured by the ammeter can vary by a maximum of 0.1%. Therefore, the maximum value of uncertainty in current measured by the ammeter is 500 / 30 x 0.1 / 100 = 0.167 A.The resolution of the ammeter is 100 mA, so the uncertainty due to the resolution of the ammeter is 50 mA (half of the resolution).

Therefore, the total uncertainty due to the ammeter is 0.167 A + 0.05 A = 0.217 A.The uncertainty in voltage can be calculated using the formula: ΔV = R ΔI + I ΔRR = 0.65 ohm, ΔI = 0.217 A, and I = 500 / 30 = 16.67 A

Therefore, ΔV = 0.65 x 0.217 + 16.67 x 0.005 = 0.141 VSo, the design-stage uncertainty in determining the voltage drop across the electric heating element is 0.141 V.

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How to stop water from coming into my basement

Answers

To stop water leakage from coming into your basement, there are several measures you can take.

How is this so?

First, ensure proper grading around your home's foundation to direct water away. Install and maintain gutters and downspouts to carry water away from the foundation.

Seal any cracks or gaps in the basement walls or floors. Consider installing a sump pump system to pump out water that enters the basement.

Also, improve exterior drainage by installing French drains or landscaping features to divert water away from the foundation.

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A Newtonian liquid flows in the annular space between to fixed horizontal concentric cylinders. The radius of the inner cylinder is ri and the outer cylinder is ro. Two static pressure taps separated by a distance L along the outer pipe are connected to a manometer with reading of h. Develop an expression for the shear stress on the inner and outer cylinder walls as a function of h. Assume the flow is fully developed and laminar.

Answers

Answer:

See explaination

Explanation:

please kindly see attachment for the step by step solution of the given problem

A Newtonian liquid flows in the annular space between to fixed horizontal concentric cylinders. The radius
A Newtonian liquid flows in the annular space between to fixed horizontal concentric cylinders. The radius

A motor car shaft consists of a steel tube 30 mm internal diameter and 4 mm thick. The engine develops 10 kW at 2000 r.p.m. Find the maximum shear stress in the tube when the power is transmitted through a 4: 1 gearing.

Answers

The maximum shear stress in the tube when the power is transmitted through a 4: 1 gearing is 28.98 MPa.

What is power?

Power is the energy transferred per unit time.

Torque is find out by

P = 2πNT/60

10000 = 2π x 2000 x T / 60

T =47.74 N.m

The gear ratio Ne / Ns =4/1

Ns =2000/4 = 500

Ts =Ps x 60/(2π x 500)

Ts =190.96 N.m

Maximum shear stress τ = 16/π x (T / (d₀⁴ - d₁⁴))

τ max =T/J x D/2
where d₁ = 30mm = 0.03 m

           d₀ = 30 +(2x 4) = 38mm =0.038 m

Substitute the values into the equation, we get

τ max = 16 x 190.96 x 0.038 /π x (0.038⁴ - 0.03⁴)

τ max = 28.98 MPa.

Thus, the maximum shear stress in the tube is 28.98 MPa.

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How did NAT help resolve the shortage of IPV4 addresses after the increase in SOHO, Small Office Home Office, sites requiring connections to the Internet? Choose the best answer below:
A.It provides a migration path to IPV6.
B.It permits routing the private IPV4 subnet 10.0.0.0 over the Internet.
C.NAT adds one more bit to the IP address, thus providing more IP addresses to use on the Internet.
D.It allowed SOHO sites to appear as a single IP address, (and single device), to the Internet even though there may be many devices that use IP addresses on the LAN at the SOHO site.

Answers

Even though there may be numerous devices using IP addresses on the LAN at the SOHO site, it allowed SOHO sites to appear to the Internet as a single IP address (and single device).

After an increase in SOHO, Small Office Home Office, sites needing internet connections, NAT assisted in resolving the IPV$ address shortage.

A router can convert a public IP address to a private IP address and vice versa thanks to network address translation (NAT). The private IP addresses are kept secret (private) from the outside world thanks to the additional protection it gives the network. By doing this, NAT enables routers (single devices) to serve as intermediaries between local (private) networks and the Internet (public networks). A single distinct IP address is needed with this arrangement to identify a complete group of computers to anyone outside their networks.

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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:

Technician a says that the intake valve is closed during the power stroke. technician b says that the exhaust valve is closed during the compression stroke. who is right?

Answers

Answer:

trick question - they are both right.

Explanation:

Both valves are closed during compression and power stroke or both strokes would be useless.

I need help with simply science ​

I need help with simply science

Answers

Answer:

mountain ranges may be

MegaPress Carbon Steel fittings with Green Dots can be used in potable water applications?

Answers

Yes, MegaPress Carbon Steel fittings with Green Dots can be used in potable water applications. The Green Dot indicates that the fitting is lead-free and meets the requirements for potable water applications.

It is important to follow all manufacturer instructions and local codes and regulations when installing and using these fittings.
MegaPress Carbon Steel fittings with green dots are not suitable for potable water applications. These fittings are designed for use in gas and mechanical systems. For potable water applications, it is recommended to use fittings specifically designed and approved for that purpose, such as those made from copper or other materials compatible with drinking water systems.

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According to each of the Utilitarian and Capabilities approacheswhat reasons should motivate an engineer to attend to the needs of the visually impaired?

Answers

Answer:

According to the Utilitarian approach, an engineer should attend to the needs of the visually impaired because doing so would result in the greatest overall happiness and well-being for the greatest number of people. By designing products and systems that are accessible and usable by the visually impaired, engineers can improve the quality of life for a significant portion of the population, which would result in increased happiness and well-being.

According to the Capabilities approach, an engineer should attend to the needs of the visually impaired because doing so would help to promote their capabilities and enable them to live fulfilling lives. By designing products and systems that are accessible and usable by the visually impaired, engineers can help to ensure that these individuals are not restricted in their ability to participate fully in society and to pursue their goals and aspirations. This would enable the visually impaired to develop and exercise their capabilities, which would contribute to their overall well-being and flourishing.

Explanation:

TRUE/FALSE. incident reports, such as situation reports and status reports enhance situational awareness and ensure that personnel can access needed information.

Answers

True, incident reports like Situation Reports and Status Reports help staff obtain necessary information and improve situational awareness.

A scenario report is what?

Decision-makers and readers can quickly understand the situation by reading a Situation Report (SITREP), a type of status reporting. It offers a precise, succinct grasp of the situation by emphasising context or meaning in addition to the facts.

What is a situation report's history?

Background. A report's background section outlines the events that gave rise to the report. This section might occasionally be referred to as the criteria or constraints section, or the transmittal letter or introduction might briefly touch on the subject.

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A sprinter reaches his maximum speed in 2.5sec from rest with constant acceleration. He then maintains that speed and finishes the 100m in the overall time of 9.60 seconds. Determine his maximum speed . 5. The cone falling with a speed strikes and penetrates the block of packing material. The acceleration of the cone after impact is = −

Answers

The maximum Speed of the Sprinter from the velocity time graph of his motion is; 11.98 m/s

How to find the maximum speed?

We are given;

Initial Speed; u = 2.5 s

Total distance; d = 100 m

Total time; T = 9.6 s

The total distance is;

d = ¹/₂(9.6 + (9.6 - 2.5) * v

where v is maximum speed.

Thus;

¹/₂(9.6 + (9.6 - 2.5) * v = 100

16.7v = 200

v = 200/16.7

v = 11.98 m/s

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an engineer wants to design a structure in which the difference in length between a steel beam and an aluminum beam remains at 0.500 m regardless of temperature, for ordinary temperatures. what must the lengths of the beams be?

Answers

Answer:

the length will be 1.058

Explanation:

coefficient of linear expansivity of Aluminum, = 25 x 10⁻⁶ ⁰C⁻¹

coefficient of linear expansivity of steel, = 12 x 10⁻⁶ ⁰C⁻¹

Change in length of aluminum; ΔL = **ΔT

Change in length of steel; ΔL = **ΔT

difference in length of Aluminum and steel;

- = 0.55 m, for this difference to remain constant, then ΔL = ΔL

From the equation above, = 0.55 +

Since, ΔL = ΔL, then **ΔT = **ΔT

At constant temperature, the equation becomes;

* = *

Recall;

To calculate the length of the steel beam;

Therefore, the length of the steel beam is 1.058 m

A lake with a surface area of 525 acres was monitored over a period of time. During onemonth period the inflow was 30 cfs (ie. ft3 /sec), the outflow was 27 cfs, and a 1.5 in seepage loss was measured. During the same month, the total precipitation was 4.25 inches. Evaporation loss was estimated as 6 inches. Estimate the storage change for this lake during the month.

Answers

Answer:

The storage of the lake has increased in \(4.58\times 10^{6}\) cubic feet during the month.

Explanation:

We must estimate the monthly storage change of the lake by considering inflows, outflows, seepage and evaporation losses and precipitation. That is:

\(\Delta V_{storage} = V_{inflow} -V_{outflow}-V_{seepage}-V_{evaporation}+V_{precipitation}\)

Where \(\Delta V_{storage}\) is the monthly storage change of the lake, measured in cubic feet.

Monthly inflow

\(V_{inflow} = \left(30\,\frac{ft^{3}}{s} \right)\cdot \left(3600\,\frac{s}{h} \right)\cdot \left(24\,\frac{h}{day} \right)\cdot (30\,days)\)

\(V_{inflow} = 77.76\times 10^{6}\,ft^{3}\)

Monthly outflow

\(V_{outflow} = \left(27\,\frac{ft^{3}}{s} \right)\cdot \left(3600\,\frac{s}{h} \right)\cdot \left(24\,\frac{h}{day} \right)\cdot (30\,days)\)

\(V_{outflow} = 66.98\times 10^{6}\,ft^{3}\)

Seepage losses

\(V_{seepage} = s_{seepage}\cdot A_{lake}\)

Where:

\(s_{seepage}\) - Seepage length loss, measured in feet.

\(A_{lake}\) - Surface area of the lake, measured in square feet.

If we know that \(s_{seepage} = 1.5\,in\) and \(A_{lake} = 525\,acres\), then:

\(V_{seepage} = (1.5\,in)\cdot \left(\frac{1}{12}\,\frac{ft}{in} \right)\cdot (525\,acres)\cdot \left(43560\,\frac{ft^{2}}{acre} \right)\)

\(V_{seepage} = 2.86\times 10^{6}\,ft^{3}\)

Evaporation losses

\(V_{evaporation} = s_{evaporation}\cdot A_{lake}\)

Where:

\(s_{evaporation}\) - Evaporation length loss, measured in feet.

\(A_{lake}\) - Surface area of the lake, measured in square feet.

If we know that \(s_{evaporation} = 6\,in\) and \(A_{lake} = 525\,acres\), then:

\(V_{evaporation} = (6\,in)\cdot \left(\frac{1}{12}\,\frac{ft}{in} \right)\cdot (525\,acres)\cdot \left(43560\,\frac{ft^{2}}{acre} \right)\)

\(V_{evaporation} = 11.44\times 10^{6}\,ft^{3}\)

Precipitation

\(V_{precipitation} = s_{precipitation}\cdot A_{lake}\)

Where:

\(s_{precipitation}\) - Precipitation length gain, measured in feet.

\(A_{lake}\) - Surface area of the lake, measured in square feet.

If we know that \(s_{precipitation} = 4.25\,in\) and \(A_{lake} = 525\,acres\), then:

\(V_{precipitation} = (4.25\,in)\cdot \left(\frac{1}{12}\,\frac{ft}{in} \right)\cdot (525\,acres)\cdot \left(43560\,\frac{ft^{2}}{acre} \right)\)

\(V_{precipitation} = 8.10\times 10^{6}\,ft^{3}\)

Finally, we estimate the storage change of the lake during the month:

\(\Delta V_{storage} = 77.76\times 10^{6}\,ft^{3}-66.98\times 10^{6}\,ft^{3}-2.86\times 10^{6}\,ft^{3}-11.44\times 10^{6}\,ft^{3}+8.10\times 10^{6}\,ft^{3}\)

\(\Delta V_{storage} = 4.58\times 10^{6}\,ft^{3}\)

The storage of the lake has increased in \(4.58\times 10^{6}\) cubic feet during the month.

The volume of water gained and the loss of water through flow,

seepage, precipitation and evaporation gives the storage change.

Response:

The storage change for the lake in a month is 1,582,823.123 ft.³

How can the given information be used to calculate the storage change?

Given parameters:

Area of the lake = 525 acres

Inflow = 30 ft.³/s

Outflow = 27 ft.³/s

Seepage loss = 1.5 in. = 0.125 ft.

Total precipitation = 4.25 inches

Evaporator loss = 6 inches

Number of seconds in a month is found as follows;

\(30 \ days/month \times \dfrac{24 \ hours }{day} \times \dfrac{60 \, minutes}{Hour} \times \dfrac{60 \, seconds}{Minute} = 2592000 \, seconds\)

Number of seconds in a month = 2592000 s.

Volume change due to flow, \(V_{fl}\) = (30 ft.³/s - 27 ft.³/s) × 2592000 s = 7776000 ft.³

1 acre = 43560 ft.²

Therefore;

525 acres = 525 × 43560 ft.² =  2.2869 × 10⁷ ft.²

Volume of water in seepage loss, \(V_s\) = 0.125 ft. × 2.2869 × 10⁷ ft.² = 2,858,625 ft.³

Volume gained due to precipitation, \(V_p\) = 0.354167 ft. × 2.2869 × 10⁷ ft.² = 8,099,445.123 ft.³

Volume evaporation loss, \(V_e\) = 0.5 ft. × 2.2869 × 10⁷ ft.² = 11,434,500 ft.³

\(Storage \, change \, \Delta V = \mathbf{V_{fl} - V_s + V_p - V_e}\)

Which gives;

ΔV = 7776000 - 2858625 + 8099445.123 - 11434500 = 1582823.123

The storage change, ΔV = 1,582,823.123 ft.³

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Design a 3-Bit (fixed reference) comparetor to compare a level of 100. Using PAL

Answers

By defining the truth table,writing Boolean expressions, Implementing the PAL and PAL equations we can Design a 3-Bit comparetor to compare a level of 100 Using PAL.

To design a 3-bit comparator using PAL (Programmable Array Logic), we can follow these steps:

Step 1: Define the truth table:

We need to compare a level of 100 with a 3-bit input. The truth table for the comparator is as follows:

```A2 A1 A0 | X2 X1 X0

-------------------

0  0  0  | 0  0  0

0  0  1  | 0  0  1

0  1  0  | 0  1  1

0  1  1  | 0  1  1

1  0  0  | 1  0  0

1  0  1  | 1  0  0

1  1  0  | 1  0  0

1  1  1  | 1  1  0

```Step 2: Write the Boolean expressions for the output bits (X2, X1, X0):

Based on the truth table, we can write the Boolean expressions for the output bits:

```X2 = A2'

X1 = (A2 A1')' = A2 + A1

X0 = (A2' A1' A0)' = A2 + A1 + A0

```Step 3: Implementing the PAL:

Now, we can use a PAL to implement the comparator using the Boolean expressions derived above. PALs typically consist of an AND array and an OR array.

The AND array will have the inputs A2, A1, and A0 connected to the product terms. The OR array will have the outputs X2, X1, and X0 connected to the sum terms.

The connections for the PAL are as follows:

```Inputs:

---------

A2 -> Product term 1

A1 -> Product term 2

A0 -> Product term 3

Outputs:

---------

X2 -> Sum term 1

X1 -> Sum term 2

X0 -> Sum term 3

```Step 4: Implementing the PAL equations:

Using the connections described above, we can implement the PAL equations:

```Product term 1: A2'

Product term 2: A2 + A1

Product term 3: A2 + A1 + A0

Sum term 1: X2

Sum term 2: X1

Sum term 3: X0

```The above connections and equations represent a 3-bit comparator using a PAL to compare a level of 100.

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About college level
Which class is easier english 103 or 102, which class do u suggest me?

Answers

I would say 102 was easier
103 is better is only all about business writing

The air conditioner in a house or a car has a cooler that brings atmospheric air from 30C to 10C, with both states at 101KPa. If the flow rate is 0.75kg/s, find the rate of heat transfer using constant specific heat of 1.004kj/kg.K

Answers

The rate of heat transfer by the air conditioner using constant specific heat of 1.004kj/kg.K is 15.06 kW.

What is the rate of heat transfer?

Rate of heat transfer is the power rating of the machine.

Work done and changes in potential and kinetic energy are neglected since it is a steady state process.

The specific heat in terms of specific heat capacity and temperature change is given as:

\(q_{out} = Cp(Ti - Te)\)

\(q_{out} = 1.004(30 - 10) = 20.08 kJ/kg \\ \)

The rate of heat transfer, is then determined as follows:

Qout = flow rate × specific heat

Qout = 0.75 × 20.08 = 15.06 kW

Therefore, the rate of heat transfer by the air conditioner is 15.06 kW.

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A good place to get hints about how to answer a response question could be

a.

Your teacher

c.

Both of these

b.

The rest of the test

d.

None of these



Please select the best answer from the choices provided


A

B

C

D

Answers

Answer:

I think its A

Explanation:

A maybe?
...............................

A beaker is filled to the 500 ml mark with alcohol. What increase in volume (in ml) the beaker contain when the temperature changes from 5°C to 30°C? (Neglect the expansion of the beaker, evaporation of alcohol and absorption of water vapor by alcohol.) C°, Palcohol = 1.12 x 104/ °C

Answers

Answer:

1.4 mL

Explanation:

Given that:

volume of alcohol \(V_0\) = 500

Temperature change ΔT = (30° - 5°)C

=25° C

\(\beta_{ alcohol }= 1.12 \times 10^{-4} / ^0C\)

The increase in volume ΔV =  \(\alpha \times V_o \times \Delta T\)

\(= 500 \times 1.12 \times 10^{-4} / ^0 C\times 25^0 C\)

= 1.4 mL

CV311 Geotechnical Engineering
You are required to construct an earth dam. Before beginning construction, why it is important for you to consider slope stability analysis. Also, state 2 causes of slope failures.

Answers

To minimize the risk of potential failure Slope stability analysis can help to minimize the risk of potential failure in your earth dam.

A slope stability analysis enables you to identify the critical slip surfaces and any adverse geological conditions that might compromise the stability of your earth dam.2. For an optimal design of the dam Slope stability analysis is crucial to ensure that your earth dam is optimally designed.

When you consider slope stability analysis, you can determine the best design of your earth dam to minimize the risk of slope failures and potential instability. Two causes of slope failures include:1. Human activities Human activities such as construction and mining can result in slope failures. This is because the earth's slope may have been altered or weakened, making it unstable and vulnerable to sliding, erosion, or collapse.

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A cylindrical component constructed from an S-590 alloy (Figure 8.31) has a diameter of 20.3 mm (0.7992 in.). Determine the maximum load that may be applied for it to survive 1000 h at 925�C (1700�F).

Answers

The maximum load of 13889 N is required to survive the condition. for A cylindrical component constructed from an S-590 alloy (Figure 8.31) has a diameter of 20.3 mm (0.7992 in.)

Calculate the tensile load using the stress relation.

σ = F/A

Here, A is the area of the bar and σ is the stress applied on the shaft.

rupture lifetime graph).

Obtain the value of stress for the material S-590 alloy from figure 8.31(Stress versus Rupture life time of 1000 hrs at a temperature of 925°C, the stress is σ = 43 MPa.

Calculate the area of the bar.

A=π/4 * d^2

Here, d'is the diameter of the bar.

Substitute 0.0203 m for d.

A =π/4(0.0203)^2

=3.23x10^-4 m²

Substitute 3.23×10^-4 m² for A, (43×10^6)N/m² for σ in equation (1).

(43x10)= F/(3.23×10^-4)

F = (43×10^4)(3.23×10^-4)

=13889 N

Therefore, the maximum load of 13889 N is required to survive the condition.

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