Based on the diagram of a ball rolling down hill, what statement is true? a) the ball in box c has less kinetic energy than the ball in box b. b) the ball in box a has more kinetic energy than the ball in box b. c) the ball in box c has more potential energy than the ball in box b. d) the ball in box c has less potential energy than the ball in box b.

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

What happens in a global convection cell

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)