Which are characteristics of electromagnetic waves? Check all that apply.
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Waves with a higher frequency have a shorter wavelength.
They all move at the same speed.
They can travel through space.
If it starts at rest the initial velocity is 0.
For an acceleration, a, and time, t, the velocity is v=at. Since at t=4, v=7, then a=7/4=1.75m/s^2