What will happen to the 0.1 N force if one charges is increased by a factor of 3?

The electric force between two charged objects is 0.10 N what will be the new force if the charge on one of the objects us made one fourth as large?

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!