Agate with a circular cross section is held closed by a lever 1 m long attached to a buoyant cylinder. the cylinder is 25 cm in diameter and weighs 200 n. the gate is attached to a horizontal shaft so it can pivot about its center. the liquid is water. the chain and lever attached to the gate have negligible weight. find the length of the chain such that the gate is just on the verge of opening when the water depth above the gate hinge is 10 m.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?