Author Question: Two ice skaters, one with a mass of 45 kg and the other with a mass of 60 kg, push off against one ... (Read 66 times)

Frost2351 · **on:** Jul 29, 2018

Two ice skaters, one with a mass of 45 kg and the other with a mass of 60 kg, push off against one another starting from a stationary position. After they have pushed off, the relative speed at which they separate is 0.600 m/s.

What is the speed of the 60-kg skater? A) 0.343 m/s
B) 0.257 m/s
C) 0.375 m/s
D) 0.750 m/s
E) 0.225 m/s

Question 2

Which one of the following is the correct order of the electromagnetic spectrum from low to high frequencies?

A) radio waves, infrared, microwaves, UV, visible, X-rays, gamma rays
B) radio waves, UV, X-rays, microwaves, infrared, visible, gamma rays
C) radio waves, microwaves, infrared, visible, UV, X-rays, gamma rays
D) radio waves, microwaves, visible, X-rays, infrared, UV, gamma rays
E) radio waves, infrared, X-rays, microwaves, UV, visible, gamma rays