2 Points
Which of the following is an example of revolution?
A. The Sun spinning on its axis
B. The Moon spinning on its axis
O C. Earth orbiting the Sun
O D. A ballet dancer spinning in place

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.)

An architect plans to use solar energy to heat the next house he designs. what principle of absorption and infrared energy can be applied to the design of the new house? how could she apply to those principals?

Photons with the highest energy have the longest period