Asmall rubber wheel is used to drive a large pottery wheel. the two wheels are mounted so that their circular edges touch. the small wheel has a radius of 2.8 cm and accelerates at the rate of 7.0 rad/s2 , and it is in contact with the pottery wheel (radius 30.0 cm ) without slipping. part a calculate the angular acceleration of the pottery wheel.

In a closed system, the total energy prior to an energy transformation is the total energy after. a. equal to b. unrelated to c. greater than d. less than

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.