sheena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?
a) v=1/3*pi*24^2(12)
b) v=1/3*pi*12^2(24)
c) v=4/3*pi*24^3
d) v=4/3*pi*12^3

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.

What is the major limitation to the light microscope?