Testing: Select one of your ramp designs for further testing. Set friction to none for all of your trials. During the testing process, you will determine the lowest starting height from which the skater can start to successfully complete the ramp from start to finish. Record the results for all three trials in the data chart below. I chose ramp design # for further testing. Test Starting Height of Skater (meters) Height of Highest Potential Energy (meters) Height of Highest Kinetic Energy (meters) Outcome: Successful or Unsuccessful Run? 1 2 3

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.