Atrain travelling at a speed of 108km/h. how much distance is it traveling every second ?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.

The particles that are found in the nucleus of an atom are