When light shines on a metal surface, the maximum energies of emitted electrons:

1. vary with the intensity of the light
2. vary with the frequency of the light
3. vary with the speed of the light
4. are random

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

a. are

i believe the answer is a hope it and is correct

b. a lightning bug, plug of grass, and a worm