What is the electromagnetic spectrum? Choose the best answer. A. The way that electricity travels into space.
B. The waves generated by electromagnets.
C. All of the different types of electromagnetic waves.
D. The spectrum of different colors of visible light.

C . All of the different types of electromagnetic waves

C

Explanation:

B, D,E,F

Explanation:

Situations from the list in which mechanical energy is conserved.

Whenever there is friction there is always some loss of energy in the process and hence energy cannot be conserved.

- The Moon orbiting the Earth  (Total energy is remains the same)

- An ice skater gliding along the ice ( smooth surface no friction loss)

- A ball sliding down a friction less hill  ( again friction less process)

- A child swinging on a friction less swing, ignoring air resistance