Explain why a golf ball and a basketball can have the same momentum when both of them are moving, and then why an x-ray photon and an infrared photon can't have the same momentum. be specific; no equations or math. b) x-ray photons hit the surface of a block of aluminum (work function 4.08 ev) and knock off electrons with a maximum speed of 2.87x106 m/s. calculate the photons' wavelength c) other photons now strike the aluminum block, but no electrons are ejected. how do these photons differ from the photons from part (b)? explain without equations or further calculation.

You and a friend (alex) are at a a tree-top adventure park .. . part of the course requires you to climb up a rope. you both climb the same rope in the same amount of time. however, the tension in the rope is greater when alex climbs. who did the most work? alex did - more tension means more force - more force means more work was done you did - less tension means less force - less force means more work was done to find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? when more work was done, the couch was moved less. when more work was done, the couch was moved further. when more work was done, the couch wasn't moved at all. when more work was done, the couch was moved the same distance.

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories