(3 points) ultraviolet light with wavelength λ 300 nm falls on a cesium surface. the kinetic energy of emitted photoelectrons is 2.1 ev. what is the work function of cesium? what is the maximum wavelength of light for the photoelectric effect to occur for cesium?

The differences between  a compression wave and a transverse wave?

Could someone . i have tried to solve myself but my calculation is off

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.