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

An automobile tire is inflated to 35 psig at 54 ^oF. After being driven, the temperature rise to 80 ^oF. Determine the final gage pressure assuming volume remains constant

A pipeline 250 mm diameter and 1580 m long has upward slopes of 1 in 200 for the first 1 km length and 1 in 100 for the remaining length. The pressures at the upper end and lower end of the pipeline are 107.91 kPa and 53.95 kPa, respectively. Determine the discharge through the pipe. Given, friction factor = 0.032.