What substance is the most abundant in earths atmosphere

True or false: the revolution of the earth creates day and night as it rotates around the sun

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

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