What device consists of coils with many turns and is used in speakers, motors, and other electronic equipment?

magnet

solenoid

generator

turbine

A person running in place on an exercise machine for 10 min uses up 17 kcal (food calories). Another person exercises by repeatedly lifting two 2.5-kg weights a distance of 50 cm.

Is natural gas inexhaustable

10. Provide the time dilation equation found in Section 15.4 of the text. Explain each step of the derivation.

An element like silicone is not usually used to make wires or pains because it

A car of mass 1400 kg travelling at 15 m/s goes over a circular arc-shaped bump in the road. if the radius of the arc is 40 m, what is the normal force on the car as it is passing the top of the arc?

Which one of the following statements concerning emf is true? A) Emf is the work done in moving the current from one terminal to the other of an emf device.

A fan is a complex machine? True or false?

Which force does not operate at a distance of 1 m? A. Weak nuclear O B. Electric C. Gravitational D. Magnetic

The deflection of alpha particles in rutherford's gold foil experiments resulted in what change to the atomic model?

What happens during evaporation? A liquid changes to a gas. A liquid changes to a solid. A gas changes to a liquid. A solid changes to a liquid.