definitions 2

Question 1

Coherence?

Answer 1

Two sources which emit waves with the same phase difference and have the same frequency. They also have a constant phase difference as they pass a point.

Question 2

Commutator?

Answer 2

A switching mechanism which reverses the connections to the coil of an electric motor to maintain its direction of rotation.

Question 3

Component of a vector?

Answer 3

One of the two vectors (in a perpendicular direction) into which a vector may be split.

Question 4

Compression?

Answer 4

Squashing forces where two forces act in opposing directions towards each other to make an object compress along the line of action of the forces.

Question 5

Conductor (electrical)

Answer 5

A material which conducts electricity well due to having many free charge carriers.

Question 6

Conservation of energy

Answer 6

During any interaction, the total energy before and total energy after are always equal.