Harry jumps horizontally from the top of a building that is 20.0 m high and hopes to reach a swimming pool that is at the bottem of the bulding 10.0 m horizontally from the edge the building if he is to reach the pool what must his jump speed be?a. 2.01 m/s.
b. 4.08 m/s.
c. 4.95 m/s.
d. 7 m/s.

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?