04 A 100 g steel ball falls from a height of 1.8 m on to a metal plate and rebounds to a height of
1.25 m. Find:
a. The pe. of the ball before the fall (g = 10 m/s2).
b. Its ke. as it hits the plate,
C. Its velocity on hitting the plate,
d. Its ke. as it leaves the plate on the rebound,
e. Its velocity of rebound.
f. What happens to the rest of the energy

Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?

Acar jack with a mechanical advantage of 6 needs to produce an output force of 600 n to raise a car. what input force is required? 6 n 100 n 600 n 3,600 n

The two metal spheres in the figure are connected by a metal wire with w switch in the middle. initially the switch is open. sphere 1, with the larger radius, i'd given a positive charge. sphere 2, with the smaller radius, is neutral. then the switch is closed. afterward, sphere 1 has charge q1, is at potential v1 and the electric field strength at its surface is e1. the values for sphere 2 are q2, v2, and e2. a. is v1 < ,> , or = to v2? explain. b. is q2 < , > , or = explain? c. is e1 < ,> ,or = to e2? explain?