Σ5i=1 Σ4j=1 ij
What is the value of this summation? - 50 - 20 - 150 - None of these Answers - 15
- 100

In truss analysis, a negative member axial force suggests that the member or the joints at its ends are in compression, whereas a positive member axial force suggests that they are in tension.

A tension member is subject to forces that pull outward at its ends on truss bridges. These members are frequently individual metal elements, such as bars or rods, even on a “wooden” truss bridge.

Compressive forces are heavier and push or compress together. The parts come together to form a triangle.

Therefore, A rigid structure called a truss is made up of two force members—where forces are applied only twice—that link at joints and are subject to external forces.

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Answer:

substance B

Explanation:

Electrical equipment can pose several types of hazards, including electrical shock, burns, fires, and explosions.

Electrical shock can occur if a person comes into contact with an electrical current. Even low voltage currents can be dangerous and potentially fatal. Burns can also occur if a person comes into contact with a hot surface, such as a light bulb or a heating element.

Electrical equipment can also start fires if it overheats or if electrical wiring becomes damaged. This can lead to a risk of property damage, injury, or even death.

Explosions can occur if there is a buildup of electrical energy in a confined space, such as a transformer, capacitor, or battery. This can lead to a sudden release of energy that can cause an explosion, resulting in injury or property damage.

To minimize these hazards, it is important to properly install and maintain electrical equipment, follow safety procedures, and provide adequate training for those who use the equipment. Regular inspections, maintenance, and upgrades can help ensure that electrical equipment is in good working order and that potential hazards are identified and addressed.

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Answer:

Scientists were surprised to find that Ötzi the Iceman's stomach contained remnants of red deer meat, as it had been previously assumed that his diet consisted primarily of plants. This finding provided new insights into the dietary habits of Copper Age Europeans and challenged previous assumptions about their reliance on agriculture. Additionally, the presence of the red deer meat in Ötzi's stomach suggested that he had eaten a last meal that was high in fat and protein, which may have provided him with the energy needed for his fateful journey through the Alps.

Answer:

Ötzi the Iceman was a well-preserved mummy found in the Italian Alps in 1991. One of the most interesting things about his remains was the discovery of his last meal. Analysis of his stomach contents showed that he had recently eaten a meal of ibex meat, a type of wild goat that lived in the region, and a type of ancient bread made from einkorn wheat. What surprised scientists was the presence of the ibex's stomach contents in Ötzi's stomach. They discovered that Ötzi had eaten the ibex meat raw, with no signs of cooking. This was surprising because it was previously believed that prehistoric humans only ate meat that had been cooked over fire. The discovery of the raw meat in Ötzi's stomach suggested that prehistoric humans may have eaten raw meat more often than previously thought and that cooking food may not have been as prevalent in ancient societies as previously believed.

Answer d

Explanation:

Answer:

Scheduling is a process of create a structure that shows the way a schedule is organized before developing a complete and final schedule of a project.

Explanation:

This is the initial step in of developing a project schedule for a capital cost project. At this stage, the estimates for the project are done involving the various actions in the project. A lot of details are included in this  schedule showing the activities that are to be performed and the constraints involved.

The encoding scheme used by 802.11a and 802.11g standards, but not by the 802.11b standard, is Orthogonal Frequency Division Multiplexing (OFDM).

OFDM is a modulation technique that efficiently divides the available frequency bandwidth into multiple smaller subcarriers, allowing for high data rates and improved performance in wireless communication.

In contrast to OFDM, the 802.11b standard uses Complementary Code Keying (CCK) and Direct Sequence Spread Spectrum (DSSS) as its encoding schemes. CCK is a more complex encoding method that allows for higher data rates compared to DSSS, which is an older technique that spreads the signal over a wider frequency band to improve robustness against interference. The 802.11a and 802.11g standards, however, adopted OFDM as their encoding scheme due to its ability to provide higher data rates and better performance in environments with multipath propagation, where signals can reflect off surfaces and create multiple signal paths.

In summary, the encoding scheme used by both 802.11a and 802.11g standards is Orthogonal Frequency Division Multiplexing (OFDM), while the 802.11b standard relies on Complementary Code Keying (CCK) and Direct Sequence Spread Spectrum (DSSS). OFDM provides better performance in wireless communication, particularly in environments with multipath propagation.

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Using the knowledge in computational language in python it is possible to write a code that output the number of characters excluding the three characters commonly used for end-of-sentence punctuation.

   import re

   def check_sentence(text):

     result = re.search(r"^[A-Z][A-Za-z\s]*[\.\?!]$", text)

     return result != None

   print(check_sentence("Is this is a sentence?")) # True

   print(check_sentence("is this is a sentence?")) # False

   print(check_sentence("Hello")) # False

   print(check_sentence("1-2-3-GO!")) # False

   print(check_sentence("A star is born.")) # True

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Answer:

umm okay for starters I have no clue lol.

what is aerodynamics????

Answer:

The 17 distinct years Mariah Carey has topped Billboard's Hot 100, spanning an historic four consecutive decades:

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2005

2006

2008

2019

2020

2021

Answer:

The major factor preventing widespread use of alternative jet fuels is currently the cost of production. Alternative jet fuels are often produced through more expensive and complex processes than traditional jet fuels, such as through the use of biomass or waste materials. Additionally, alternative jet fuels currently have lower economies of scale, as the demand for them is still relatively low. Fuel compatibility with modern engines and fuel stability are also important factors to consider, but significant progress has been made in addressing these issues through testing and certification processes. Octane rating is not a significant factor in jet fuel, as it is a rating used to measure the anti-knock properties of gasoline for use in spark-ignition engines, whereas jet engines use a different type of fuel and combustion process.

Explanation:

The code snippet provided contains a syntax error. In the line `int x = input.next();`, the `next()` method of the `Scanner` class is being assigned to an integer variable `x`.

However, the `next()` method returns a string, not an integer. This results in a compilation error since you cannot assign a string value to an integer variable.

To fix the error, you should change the data type of the variable `x` to `String`, like this:

```java

Scanner input = new Scanner(System.in);

String x = input.next();

System.out.println(x);

```

This modification ensures that the input is read as a string and can be assigned to the `x` variable correctly.

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Answer:

Yes

Explanation:

In such a case, one way to check the credit charge is to contact your bank, doing so would allow the bank to check your account properly to determine where the transaction was originated from.

Another way you could check is to contact the online merchant where such a transaction was initiated.

Answer:

Past tense of hear = heard

Answer: Shawty my lil baddie

Explanation:

Answer:

The answer is 0.06027 m³

Explanation:

Solution

Given that:

The first step to take is to determine the initial state of the volume for R-134a refrigerant

Now,

v₁ =V/m

V = the volume of weighted piston cylinder device at the normal state

m = the mass of the R-134a refrigerant

Thus,

We substitute the values 0.14 for V and 0.2 kg for m

Which results in

v₁ = 0.14/0.2

v₁  = 0.7 m₃/kg

The next step is to find the saturated pressure of the R-134a refrigerant from the temperature table of saturated refrigerant R-134a which is equivalent to the normal temperature of 26.4°C.

Thus, by applying the method of interpolation we have the following

P₁ =101.73 - ((101.73-92.76) * (-26-(-26.4)/-26- (-28))

P₁ = 99.936 kPa

So,

The refrigerant in the weighted piston–cylinder device is then heated until the temperature gets to a 100°C

Hence, the temperature and pressure at a state of two becomes

P₂ = 99.936 kPa

T₂ = 100°C

The next step is to determine the specific volume of the refrigerant R-134a at a final state from the super heated refrigerant R-134a which is equivalent to the pressure of 99.936 kPa

v₂ =0.30138 m³ /kg

Now,

we now calculate the final state of  the weighted piston cylinder device

V₂ = mv₂

V₂ = 0.2 * 0.30138

V₂ = 0.06027 m³

Hence ,the final volume of the weighted cylinder piston device is 0.06027 m³

Answer: straight blade and locking

Explanation: Electrical receptacles come in straight blade and locking varieties.

The digital platform is the foundation of an organization's digital ecosystem, which includes IoT devices, and is overseen by option c) technology sponsor.

The technology that makes up an organization's digital ecosystem is its digital platform. This includes all of the hardware, software, and infrastructure that are used to support the organization's digital operations. It also includes the Internet of Things (IoT) devices that are connected to the platform, such as sensors, cameras, and other smart devices.


IT consumerization refers to the trend of employees bringing their own personal devices and software into the workplace, and using them for work-related tasks. This can create challenges for IT departments, as they need to ensure that these devices are secure and compatible with the organization's digital platform.

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Answer:

reservoir is 727°C, then low temperature

Explanation:

Efficiency for any Heat engine = Work done by engine / Heat provided to the engine

Also, for a carnot engine derived formula for Carnot Engine

= 1- T2/T1

Where, T2 = sink reservoir temperature

and T1 = source reservoir temperature

727° C = 1000 K

So, 0.75 = 1-T2 / 1000

So, T2 = 1000*0.25 = 250 K = -23 Kelvin

The scale that is based on the tenths and hundredths of an inch is c. Decimal.

The decimal scale is a measurement system that is based on tenths and hundredths of an inch. It is a precise measurement system commonly used in various fields such as engineering, manufacturing, and construction.

In the decimal scale, one inch is divided into 10 equal parts, with each part being referred to as a "tenth". Each tenth is further divided into 10 equal parts, resulting in 100 equal parts, with each part being referred to as a "hundredth". Therefore, one inch is equal to 10 tenths or 100 hundredths.

For example, a measurement of 2.45 inches would mean 2 whole inches and 45 hundredths of an inch. This can be represented as 2.45 on the decimal scale. The decimal scale is used for precision measurements where accuracy is important, and it is commonly used in applications such as machining, metrology, and inspection.

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The 6.8 ton air conditioning system can pull out 81,600 BTUs of heat per hour from the home.

To help you with your question, let's first understand the terms involved.

1. Ton: In the context of air conditioning, a ton represents the cooling capacity of an AC system. One ton is equal to 12,000 BTUs (British Thermal Units) per hour.

2. BTU: A British Thermal Unit is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

Now, let's calculate the number of BTUs that the 6.8 ton air conditioning system can remove per hour:

6.8 tons × 12,000 BTUs/ton = 81,600 BTUs per hour

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Answer:

please let me know the answer to this because I need to know as well. thanks

Leaks from the heater core can result in coolant misting out of the vents or coolant dripping from the same drain hole used by the AC evaporator.

The heater core is a component in a vehicle's heating system that helps provide warm air to the interior of the vehicle. It is typically located behind the dashboard and is connected to the engine's cooling system.

When there is a leak in the heater core, coolant (a mixture of antifreeze and water) can escape from the core. This coolant can then find its way into the ventilation system, where it can be forced out of the vents and create a misting effect. This misting of coolant can be noticeable as a fine spray or droplets coming out of the vents when the heating system is turned on.

Additionally, the HVAC (Heating, Ventilation, and Air Conditioning) system in many vehicles shares some components with the AC (Air Conditioning) system, including the drain hole used by the AC evaporator to remove condensation. If there is a heater core leak, coolant can also drip from the same drain hole used by the AC evaporator, leading to coolant dripping onto the ground beneath the vehicle.

These coolant leaks from the heater core can be problematic as they can cause a loss of coolant from the engine cooling system, which can lead to overheating of the engine if not addressed. It is important to have any coolant leaks diagnosed and repaired by a qualified mechanic to ensure the proper functioning of the vehicle's heating and cooling systems and to prevent potential engine damage.

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Print each product followed by a comma If the input is: 4 5 10 12 2 4 7 3 then output is: 40,25,100,144,6,24,21.

What is Print?
Printing is the process of creating a document or image on paper or another medium using a computer. It is a form of output that is produced by a computer, commonly referred to as "hard copy." Printing is often done from applications such as word processors and other programs, but can also be done directly from the operating system. The most common type of printing is inkjet printing, which produces the highest quality prints. Laser printing is another popular form of printing, which is usually faster and more economical than inkjet printing. Thermal printing is another type of printing, which is often used for labels and barcodes.

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Answer:

Pistons should be inspected and measured.

Explanation:

Answer:

currently states that a person is qualified to drive a commercial motor vehicle if he/she “can read and speak the English language sufficiently to converse with the general public, to understand highway traffic signs and signals

So I think B

Answer:

hi there

Explanation:

Answer:

To determine the differential height of water between the two sections of the pipe, we need to consider the conservation of energy and the ideal gas law.Conservation of energy:

The first law of thermodynamics states that the increase in internal energy of a system is equal to the heat added to the system, minus the work done by the system. In this case, the internal energy of the air flowing through the pipe increases as it is compressed in the neck of the pipe, causing its temperature to increase.The increase in internal energy can be expressed as:ΔU = Q - Wwhere ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system.Ideal gas law:

The ideal gas law states that the pressure of an ideal gas is directly proportional to its temperature and inversely proportional to its volume. This can be expressed as:PV = nRTwhere P is the pressure, V is the volume, n is the number of moles of gas, R is the universal gas constant, and T is the temperature.Solution:

To determine the differential height of water between the two sections of the pipe, we need to use the conservation of energy and the ideal gas law to relate the pressure difference between the two sections to the temperature difference and the flow rate of the air.First, let's convert the flow rate of the air from liters per second to cubic meters per second:200 L/s = 0.2 m3/sNext, we can use the ideal gas law to express the pressure difference between the two sections in terms of the temperature difference and the flow rate:ΔP = (nRT1 - nRT2)/V = (1.20 kg/m3 * 8.31 J/(molK) * 298 K - 1.19 kg/m3 * 8.31 J/(molK) * 303 K)/(0.2 m3/s)ΔP = -27.7 PaFinally, we can use the conservation of energy to express the differential height of water in terms of the pressure difference and the flow rate:Δh = ΔP/ρg = (-27.7 Pa)/(1000 kg/m3 * 9.81 m/s2) = -0.28 mTherefore, the differential height of water between the two sections of the pipe is -0.28 m.Note that the negative sign indicates that the pressure is lower in the second section of the pipe, which is consistent with the fact that the temperature is higher and the volume is lower in this section.

Explanation: