A 12.0 kg ball is placed on a catapult. When the catapult releases it applies a pressure of 1598 N, what is the acceleration of the ball as it moves through the air?

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

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.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant