Electric Circuits Answers

a particle p travels in a straight line from A to D passing through the point B and C .for the section AB, the velocity of the particle is (0.5t-0.01t^2), where tsecs is the time after living A. given that the ACCELAration of P at B is 0.1ms^-2. find the time taken for P to travel from A to B

A 0.20 kg stone is held 1.3m above the top edge of a water well and then dropped into it. The well has a depth of 5.0m. Relative to the configuration with the stone at the top edge of the well, what is the gravitational potential energy of the stone-Earth system (a) before the stone is released and (b) when it reaches the bottom of the well? (c) What is the change in gravational potential energy of the system from release to reaching the bottom of the well?

when a rifle is fired, the rifle "kicks" backwards, but why doesn't the rifle recoil with the same acceleration as the bullet?

Two resistors, having resistances of 30 and 60 ohms are connected in parallel, and in series with them is a resistor having a resistance of 5 ohms. What p.d. must be applied to the whole circuit to cause a current of 4.8 Amps through the 5 ohm resistor?

A file cabinet weighing 1500 N is at rest on the floor. The coefficient of static friction between the floor and the cabinet is 0.5. What is the minimum force required to make the file cabinet move horizontally

A crate with a mass of 40 kg is being dragged along a horizontal floor at a constant velocity by an applied force of 180 N. What is the coefficient of kinetic friction? (g = 10 m/s2

An object with a mass of 50 kg is being dragged along a horizontal floor by a horizontal force of 30 N. If the friction force opposing the motion is a steady 20 N, what is the acceleration of the body

Does electric current flowing in a moving wire affect its motion?