Photons of energy 7.0 ev strike a metal whose work function is 2.3 ev. ke of the most energetic photoelectron is
5.2 ev
3.8 ev
4.7 ev
7.4 ev
9.3 ev

Atoms in a molecule are bonded together by sharing gaining or losing_

What difference are found in the propagation of sound in the media solid,liquid and gas

Which statement is an example of the law of conservation of energy? a soccer ball eventually stops because its energy disappears. when a light bulb is turned on, electrical energy is converted to light and heat. an automobile engine burns gasoline to converts its chemical energy to electrical energy.