A sphere is charged with electrons to -7 x 10-6C.
How many electrons make up this charge?
The elemental charge is 1.6 × 10-19 C.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Auniform crate c with mass mc is being transported to the left by a forklift with a constant speed v1. what is the magnitude of the angular momentum of the crate about point a, that is, the point of contact between the front tire of the forklift and the ground

What is the volume of 2400kg of gasoline (petrol) if the density of petrol is 0.7g/km3