5. Classify the following as elastic or inelastic collisions: (2 pts) a. A pool ball collides with the 8 ball sending it into the corner pocket:
b. A bullet collides with the target lodging itself in the wood:
C. A bowling ball strikes the pin and knocks it backward into another pin:
d. Fred jumps on Eric's back and they fall to the ground:

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Which transition by an electron will release the greatest amount of energy? oa ob oc od