If a light bulb uses 0.4 amperes of current at a voltage of 1.8 volts, the formula to find R is, and the resistance of the bulb is ohms. NextReset

The switch on some accumulaters is usually used to

when a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

A current of 9 a flows through an electric device with a resistance of 43. what must be the applied voltage in this particular circuit? a. 387 v b. 4.8 v c. 387 a d. 4.8 a

A 2 kg ball rolls off a 27 m high cliff, and lands 25 m from the base of the cliff. Express the displacement and the gravitational force in terms of vectors and calculate the work done by the gravitational force.

Which equation best describes the law of conservation of momentum? pi = pf pi > pf pi < pf pi + pf = 0

For a machine, the input force is 30 N, and the input distance is 2 m. Factoring in the effect of friction, what must be true about the work output? A. It must be greater than 60 J B. It equals 60 J. C. It must be less than 60 J

6. When a positive charge is released and moves along an electric field line, it moves to a position of A) lower potential and lower potential energy. B) lower potential and higher potential energy. C) higher potential and lower potential energy.

a young child standing in the aisle of a parked bus tosses a ball straight up in the air and lets it drop at her feet.

Why do corpse (dead body) of an individual floats easily in the fluid than the individual himself

How can you give a baloon an electric charge