Abox is pushed 40 m by amover. the amount of work done was 2,240 j. how much force was exerted on the box?

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

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o