According to the hubble law, a galaxy that is four times as far from earth will be moving away approximately
a. a quarter as fast
b. twice as fast
c. four times as fast
d. at the same speed

What are two different ways you could find the value of a? explain these methods.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate