The first device Faraday invented based on Ørsted’s observation was the motor. What did this device do?

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.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?