1. If a 250 kg rock is sitting on the ledge of Ls cliff 295 meters high, then what is the potential energy of the rock?

Explanation:

P.E=M*G*H

P.E=250*10*295

P.E=737,500J

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.