An oil drop carrying a charge of 3e falls under gravity with a constant velocity of 4.6x10 m/s between two metal plates 5mm apart. When a p. d of 4600V is applied to the plates, the drop rises steadily. Calculate; (1) Radius of oil drop (2) Velocity with which the oil drop rises [density of oll 900kgm viscosity of air 18x10 "Nim] assume the effect of air buoyancy is negligible​

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.

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.