What is the difference between air-standard assumptions and the cold-air-standard assumptions?

Q: How pressure and densities of gas is directly related to eavch other?

A: Pressure is the measure of force acting on a unit area. Density is the measure of how closely any…

Q: Calculate the temperature the entire sky would have to be in order to transfer energy by radiation…

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Q: Why are thermometers that are used in weather stations shielded from the sunshine?

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Q: A bigh-altitude balloon is partially filled with 3 m of helium at sea level. As the balloon ascends…

A: Boyle's law define that the product of pressure and volume remains constant. P1V1 = P2V2  P1 = 1 atm…

Q: What is the difference between the entropies of airat 15 psia and 90F and air at 40 psia and 210F…

A: First we will do conversions

Q: Consider a hot boiled egg in a spacecraft that is filled with air at atmospheric pressure and…

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Q: Calculate the total thermal energy in a liter of helium at roomtemperature and atmospheric pressure.…

A: As helium is a monatomic gas, so the total thermal energy of a monatomic gas will be, Here, n, R…

Q: Is the state of the air in an isolated room completely specified by the temperature and the…

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Q: Atmospheric scientists studying clouds in theMarshall Islands have observed what they believe to be…

A: The radius of the raindrop is,

Q: What is the basic difference between a cloud and fog?

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Q: Both the pressure and volume of a given sample of an idea gas double. This means that in Kelvins it…

A: Ideal gas equation is given as

Q: For a specified fluid pair, inlet temperatures, and mass flow rates, what kind of heat exchanger…

A: Given: Hot and cold side fluids are same for all heat exchanger. Inlet temperatures are constant.…

Q: Puffy cumulus clouds, which are made of water droplets, occur at lower altitudes in the atmosphere.…

A: Given,For altitude less than 11 Km temperature is given as,

Q: Balloons used helium at atmospheric pressure 101.325kPa and temperature 25 °C. It is projected to…

A: When the balloon rises in the air, it displaces some mass of air which is equal to the mass of…

Q: 4.7. For a pure buoyant plume, it can be shown that the vertical velocity and the buoyancy factor of…

A: Buoyancy force is a upward force.

Q: What is an ideal gas?

A: It is a hypothetical gas. This gas follows ideal gas law.

Q: When is pressure altitude equal to density altitude? On a standard day. O On a non-standard day.…

A: When is pressure altitude equal to density altitude we have to find

Q: Estimate the average thermal energy of a room temperature (27°C), helium atom at

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Q: Explain why air temperature readings are always takenwith the thermometer in the shade

A: Air temperature is a measure of how hot or cold the air is.

Q: What Is the effect of temperature on most probable speed ?

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Q: Explain why are the rooms often provided with double windows in cold countries?

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Q: Explain the term temperature deviation?

A: The temperature deviation is the change in the temperature from the expected temperature. Suppose…

Q: If a thermometer is allowed to come to equilibrium with the air, and a glass of water is not in…

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Q: When an ordinary mercury thermometer is placed in hot water, its reading drops at first but quickly…

A: Given that, When an ordinary mercury thermometer is placed in hot water, its reading drops at first…

Q: When a mercury thermometer is warmed, the mercury level momentarily goes down before it rises. Can…

A: When heated not only does the mercury expand but so does its container which causes the inner…

Q: The force of air particles over an area is O temperature. O pressure. O volume. O kelvins.

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Q: If you launch a projectile upward with a high enough speed, its kinetic energy is sufficient to…

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Q: gz - Lvqi = 302525 J/kg and a total specific humidity qt = qv+qi= 16.2 g/kg. Determine its…

A: In this question we have to find the smallest air density. Please give positive feedback if the…

Q: Why is it difficult to make mercury enter a fine thermometer tube?

A: Since the cohesive forces between the molecules of mercury are very large as compared to adhesive…

Q: After filling your gas tank to the top and parking your car in direct hot sunlight, why does the…

A: The molecules are free and widely spreading an expanded gas. So, its density is less as compared to…

Q: A spherical air bubble originating from a scuba diver at a depth of 18.0 m has a diameter of 1.0 cm.…

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Q: A student calibrated their thermometer and obtained a reading or -2.0C in an ice water slush bath.…

A: Given: The calculated value of ice water=-2.0 oC=271 K. Required: error in the calculation.

Q: What are the assumptions of an air-standard analysis? Cold air-standard analysis?

A: The air standard assumptions are as follows: 1. The working fluid is air, which continuously…

Q: Why are thermometers that are used in weather stations shielded from the sunshine? What does a…

A: Given: Need to define the thermometers that are used in weather stations shielded from the sunshine.…

Q: Why does exhaled air appear as a little white cloud in the winter (Fig. 13–30)? FIGURE 13-30…

A: Exhaled air appears white

Q: At the same pressure, the ideal gas law is density xtemperature = constant. An old house has only…

A: Given data: The air temperature upstairs is T1=20°C. The density of air is ρ1=1.2 kg/m3.

Q: A woman plans to travel to Baguio. She checks the weather update and the average temperature for…

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Q: Why can we assume air is diatomic?

A: At room temperature or generally the major portion of air comprises of oxygen and nitrogen and both…

Q: Why are thermometers that are used in weather stations shielded from the sunshine? What does a…

A: When thermometer is exposed to sunshine, there will be an increase in the temperature reading due to…

Q: Why is it easier to piggyback someone when you’re in swimming pool or sea as compared when you do it…

A: Scenario: When you piggyback someone in swimming pool or sea it's easier if compared to the…

Q: In the carburetor of an aircraft or automobile engine, air flows through a relatively small aperture…

A: We know that in an adiabatic process, there is no heat exchange. ∆Q=0 According to first law of…