Which form of energy is due to the movement of electrons?

O A. potential

O. B. electrical

O C. nuclear

O D. kinetic

In one hour, coal supplies 500 000 J of energy. The energy amounts to 380 000 J. How much useful energy is produced in one hour?

A truck accelerates uniformly from rest to 17.5 m/s in 6.1 s along a level stretch of road. Determine the average power (in W) required to accelerate the truck for the following values of the weight (ignore friction).

According to the theory of plate tectonics, the A. asthenosphere is divided into plates. B. lithosphere is divided into plates. C. asthenosphere moves over the lithosphere. D. asthenosphere is strong and rigid.

What is machine. what is mechanica advantage

A boat has a mass of 4040 kg. Its engines generate a drive force of 4660 N due west, while the wind exerts a force of 880 N due east and the water exerts a resistive force of 1400 N due east. Take west to be the positive direction.

Explain the formation of color in terms of reflection and absorption of light waves.

Stretched 1 cm beyond its natural length, a rubber band exerts a restoring force of magnitude 2 newtons.

Researcher measures the thickness of a layer of benzene (n = 1.50) floating on water by shining monochromatic light onto the film and varying the wavelength of the light.

How is mechanical energy calculated? A. by adding potential energy and kinetic energy B. Oby subtracting potential energy from kinetic energy C. by multiplying potential energy and kinetic energy D. by dividing potential energy by kinetic energy

The voltage (or electric potential) of battery determines a. how much net electric charge is in the battery b. how much work the battery can do on an electric charge c. how much electric field is around