Which component is found only in electric generators and not in electric motors?

a commutator

brushes

an armature

slip rings

A block initially at rest is allowed to slide down a frictionless ramp and attains a speed v at the bottom. to achieve a speed of 1.8v at the bottom, how many times as high must a new ramp be?

The most describe alternative given up a result of a decision is the

How much relativistic energy is in a 0.3 kg object?

A horizontal force of at least 150N is required to start moving a 750N crate initialy at rest on a horizontal fioor the coefficient of static friction between the crate and the floor is?

How does earth's magnetic field behave through long periods of geologic time?

A gas in a piston is compressed doing - 439 j of work, and its internal energy increases by 318 j. how much heat flows? (be careful with + and -. + w = expansion. + q = added, + u = temp goes up) (unit = j)

A loop of wire is placed in a uniform magnetic field. (a) For what orientation of the loop is the magnetic flux a maximum? The plane of the loop is perpendicular to the magnetic field. The plane of the loop is parallel to the magnetic field.

Dr. Arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode.

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started

The elements with the largest atomic radii are found in the