Consider the astronaut on the surface of Mars. They release a 0.06 kg tennis ball from rest and the tennis
ball accelerates down toward the surface of Mars. What
is the acceleration due to gravity that this tennis ball
would experience as it falls to the surface? Consider air
resistance to be negligible.

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.

1. how to locate the image in converging(concave) mirror and diverging (convex) mirror with salt. 2. how to locate the image in a converging (convex) lens and diverging (concave) lens with salt.

What is the major limitation to the light microscope?