25 n object requires a 5. 0 n to start moving over a horizontal surface. What is the coefficient of static friction?.

In a system, when potential energy decreases, then entropy also decreases. true false

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic