In the determination of the distance of the Moon from the Earth, the time delay between the transmissions and reception of a radio wave signal is 2.5 s, Given that the speed and frequency of the radio waves are 3.0 x 10 m s-1 and 10 8 MHz respectively , calculate the a)distance of the moon to earth
b) wavelenth of the radio waves used.

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.