Imagine a tennis ball with a mass of 0.065kg falling toward the ground, if when the ball bounces back up it reaches a height of 0.45m, what is the ball’s new potential energy? J

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above