Would you expect the temperature of air to drop as it undergoes a steady-flow throttling process? Explain.

Q: Why does snow remain on mountain slopes even when daytime temperatures are higher than the freezing…

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Q: According to the principle of_______________________, if the Arctic were covered with soot instead…

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Q: Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat transfer…

A: The rate of heat transfer by radiation is calculated by using the given formula below. Here, ε,σ,…

Q: What makes heat rise? Explain.

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Q: Can the temperature ever rise with altitude in the real atmosphere?Wouldn’t this cause the air…

A: As the height increases distance from sun decreases due to which temperature increases.

Q: If cooling occurred at the bottom of a pond instead of at the surface, would the pond freeze from…

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Q: Explain Mechanisms of Heat Loss or Gain?

A: To determine: The mechanisms of heat loss or gain

Q: CO2 at one atmosphere pressure and temperature- 60 degree C is compressed isothermally. Does it go…

A: The P_T phase diagram for CO2 is drawn in the graph.

Q: What is the effect of temperature on surface tension?

A: Surface tension is the tension of the surface film of a liquid caused by the attraction of the…

Q: Why does warm, moist air form clouds when it rises?

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Q: The energy released from condensation in thunderstorms can be very large. Calculate the energy…

A: From the given information, we can say that, ρwater=1000 kg/m3R=1 km=1×103 mh=1 cm=1×10-2…

Q: What is the Effect Of Temperature On Surface Tension And Viscosity?

A: Viscosity and surface tension are the physical properties of the liquid. Viscosity is defined as the…

Q: What is a thermocouple?

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Q: When night falls, the temperature of the earth’s surface starts to drop. On a cool night, dew starts…

A: Dew are the condensed tiny water droplets of water vapors present in the earth’s atmosphere and can…

Q: You can determine wind direction by wetting your finger and holding it up in the air. Explain.

A: The sensation of feeling cold is due to the removal of the heat from the body. The transfer of heat…

Q: are supercritical liquid and supercritical fluid the same or different? Explain

A: supercritical liquid and supercritical fluid are same. A supercritical fluid (SCF) is any substance…

Q: The rate of evaporation of liquid does not depend upon -1) temperature2) its surface area exposed to…

A: Answer: Option (3) Evaporation is a process which liquid changes into vapor below its boiling point.…

Q: What is thermal stress? Give some examples?

A: Thermal stress is the stress created by a change in temperature of a material. They can lead to…

Q: Discuss how high specific heat capacity of water helps in formation of land and sea breeze.

A: Specific heat capacity of land is 5 times less as compared to water. Thus, air above land becomes…

Q: Birds are often seen to swell their feathers in winters. Why?

A: Birds swelling their feathers is a mechanism to keep themselves warm during winter.

Q: At 0 ⁰C and under 1 atm pressure, for 100 hours at 4 m/s wind speed and 12 m/s wind speed. Calculate…

A: The power of wind can be expressed as, Here ρ is the density of air, A is the area taken and v is…

Q: What happens to the volume of air as it rises? What happens to its temperature?

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Q: Why do clouds often form above mountain peaks?

A: At the mountain peak the atmospheric pressure is lower than the pressure at ground. The hot air…

Q: Why does cold mountain air become warm when it descends into valley?

A: When the air descends, it gets compressed due to the adiabatic process.

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: Describe the process of Calculating the Final Temperature in Calorimetry? Explain with an example?

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Q: Why do clouds often form above mountain peaks? (Hint: Consider the updrafts.)

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Q: How does adiabatic temperature change lead to a change in relative humidity?

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Q: Does water boil at higher temperatures at higher pressures? Explain.

A: Water boil at higher temperatures at higher pressures

Q: At what temperature does water vapor condense at the pressure of an atmosphere?

A: Condensation: Substance gaseous (vapour) state changes into its liquid condition (see states.…

Q: of a mountain is 3240 m higher than a point in the foothills. Assume that the atmospheric lapse rate…

A: Given:- The summit of a mountain is h=3240 m higher than a point in the foothills. the atmospheric…

Q: What actually is thermal pollution?

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Q: Explain, why does a wise farmer water his fields, if forecast is frost?

A: The frost can seriously damage the leaves and fruit of plants. When a farmer waters his fields,…

Q: Near a large body of water, the fluctuations in air temperature are usually less extreme than they…

A: Water has a very large specific heat constant. It takes long time to heat under sun or cool during…

Q: What is external forced convection? How does it differ from internal forced convection? Can a heat…

A: When the fluid is forced over a surface, it is called external forced convection. And when it is…

Q: Give examples of latent heat, fusion, evaporation, and condensation on a day to day basis.

A: Objective: To determine the examples of latent heat, fusion, evaporation, and condensation in the…

Q: In the winter, cold air is brought into homes and is heated. How does the relative humidity of that…

A: Relative humidity is the measure of amount of water vapor present in the air ( in percentage).  It…