The work function of cesium is 1.96 ev. if radiation of wavelength 4.00 × 10^2 nm is incident on the surface, find the kinetic energy of the ejected photoelectrons in ev and the speed of the ejected electrons.

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

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d