Janus

For a ballistics study a 1.9 gram bullet is fired into soft wood at 380 meters/sec and penetrates 15 cm. a.) find the retarding force (resistance) in N. b.) the time needed to stop the bullet in sec. c. acceleration of the bullet in meters/sec.

A centrifugal pump compresses 3000 liters/min of water from 98 KPa to 300KPa. the inlet and outlet temp are 25°C. The inlet and discharge pipe are on the same level but the diameter of the inlet piping is 15cm whereas that of the discharge piping is 10cm....

An automobile tire contains a certain volume of air at 30 psig and 70 °F. The barometric pressure is 29.50 Hg. If due to running conditions, the temperature of air in the tire rises to 160 °F. What will be the gauge pressure? Assume that air is an ideal g...

A 12 cu.ft tank contains hydrogen sulfide gas at 150psia & 80°F after 5 pounds of the gas have been drawn out. Before any gas left the tank the temperature was 70°F. What mass of gas was in the tank originally and what pressure? just to check: R=45.2 V=12...

5 pounds of an ideal gas with R=38.7 and K=1.668 have 300Btu of heat added during a reversible constant pressure change of state, initial temperature=80°F. Determine: a.)the final temperature b.)change of internal energy change of enthalpy change of entro...

Thank you very much

My mistake I forgot to add the units Unit of R = (ft lb(force)) / lb(mass) °R P = lb x (ft lb(force)) / lb(mass) °R) / (cu in x (1ft/12in) the (1ft/12in) is suppose to make the P into lb / sq in.

Edit: P = lb x (ft lb(force)) / lb(mass) °R) °R / (cu in x (1ft/12in)