The evil Dr. L is involved in a plot to de-spin the Earth using knowledge acquired from the Franklin Institute. HE plans to mount a series of surplus rockets tangentially all along the equator. Taking the planet to be a uniform sphere of radius 6.37E6 m and mass 5.98E24 kg, how much continuous thrust would the rockets need to apply to accomplish the deed in 12 hours

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Why are graphs useful when interpreting data

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.