The difference between visible light and X rays is that a. the speed of X rays is greater.
b. they travel through a different medium.
c. the amplitude of visible light is greater.
d. the frequency of X rays is greater.

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

Observations show that interstellar clouds can have almost any shape and

Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?