Heat and Thermodynamics

Problems

1. A given volume of helium is at 0°C and is expanded suddenly to twice its volume. Find the temperature after expansion, assume γ = 1.67.

    

   Ans. 172 K

2. Dry air is compressed at 27°C to one third its volume. Find the resulting rise of temperature.

    

   Ans. 165.6°C

3. Calculate the final temperature when a given mass of a gas at 0°C is suddenly compressed to a pressure 20 times the initial pressure (γ = 1.42).

    

   Ans. 662 K

4. Dry air enclosed at 25°C and atmospheric pressure is suddenly compressed to half its volume. Find the resulting temperature and pressure (γ = 1.4).

    

   Ans. 2.638 atm, 393 K

5. A quantity of air at normal temperature is compressed (a) slowly, (b) suddenly to 1/10 of its volume. Find the rise in temperature if any in each case. ...