Molecular Physics | Thermodynamics Answers

For a ballistics study, a 2.2 gm bullet is fired into soft wood. Thebullet strikes the wood surface with a velocity of 370 m/s andpenetrates 0.17 m. Find (a) the constant retarding force, N, (b)the deceleration, m/s^2, (c) the time required to stop the bullet. 

In a reversible adiabatic manner, 17.6 m3 /min of air are compressed from 277K and 101 kPa to 700 kPa. Determine the power required.

W =

One kilogram per second of air initially at 101 kPa and 300K is compressed polytropically according to the process PV^1.3 = C. Calculate the power necessary to compress the air to 1380 kPa.

W =

Air at a pressure of 100 kPa has a volume of 0.32 m³. The air is compressed in a reversible adiabatic manner until the temperature is 190 ^oC. The reversible work is -63 kJ/kg. Determine the initial temperature.

t =

An ideal compressor compresses 12 kg/min of air isothermically from 99 kPa and a specific volume of 0.81 m3 /kg to a final pressure of 600 kPa. Determine the work in kW

While the pressure remains constant at 689.5 kPa the volume of a system of air changes from 0.567 m3 to 0.283 m³. Determine the heat added/rejected

A 2 kg mass oxygen expands at constant pressure of 172 kPa in piston-cylinder system from a temperature of 32 ^oC to a final temperature if 182 ^oC

A closed rigid container has a volume of 1 m³ and holds air at 344.8 kPa and 273 K. Heat is added until the temperature is 600 K. Determine the change of internal energy