Somewhere between the earth and the moon, gravity from these two bodies on a space pod would cancel. Is this location nearer the earth or the moon?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

What is friction? how does it affect the motion of an object?

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?