Aboy is running with kinetic energy of 810j if the boy has a mass of 80kg what is his peed

Aregular polygon has angkes of size 150° each.how many side has the polygon

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

What is the equation for electrical work?