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which statement best describes how the period and frequency of electromagnetic waves change between gamma rays and microwaves?
a) the period and the frequency stay the same.
b) the period increases and the frequency decreases.
c) the period decreases and the frequency increases.
d) the period increases and the frequency increases.

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.