A ball is equipped with a speedometer and launched straight upward. The
speedometer reading two seconds after
launch is shown at the right; the ball is
moving upward. At what approximate
times would the ball be moving
downward and display the following
speedometer readings?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little