Aspark plug in an automobile engine consists of two metal conductors that are separated by a distance of 0.75 mm. when an electric spark jumps between them, the magnitude of the electric field is 4.7 x 107 v/m. what is the magnitude of the potential difference δv between the conductors?

What is the angular momentum of the bar about the axle?

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c