Waves Quiz

When two transverse waves traveling through a medium meet and exactly coincide, the resulting displacement of the medium

• is the sum of the displacements of each wave.

• is zero.

• is always greater than the displacement of either wave alone.

• is always destructive.

When two waves having displacements in opposite directions meet, _______________ occurs.

• complete cancellation

• no interference

• constructive interference

• destructive interference

Two waves meet and interfere constructively. Which one of the following factors increases?

• period

• amplitude

• frequency

• wavelength

The diagram above represents two pulse waves moving toward each other through a medium. The two waves will exactly coincide when they reach point A. At point A, the amplitude of the combined waves will be

• twice that of either wave alone.

• the same as either wave alone.

• half that of either wave alone.

• zero.

When a wave on a rope strikes a free boundary, the wave is a.

• reflected and inverted.

• not reflected.

• reflected but not inverted.

• absorbed.

A wave pattern on a stretched string appears to be stationary. This wave pattern is an example of a

• longitudinal wave.

• non-periodic wave.

• pulse wave.

• standing wave.

In a standing wave on a vibrating string, a point that appears to remain stationary is a(n)

• antinode.

• point of constructive interference.

• node.

• rarefaction

The diagram above represents a certain standing wave on a vibrating string. This standing wave has

• 4 nodes and 3 antinodes.

• 2 nodes and 3 antinodes.

• 3 nodes and 4 antinodes.

• 3 nodes and 2 antinodes.

A mass is attached to a spring and moves with simple harmonic motion on a frictionless horizontal surface, as shown above.

In what form is the energy in the system when the mass passes through the equilibrium position?

• elastic potential energy

• gravitational potential energy

• kinetic energy

• a combination of two or more of the above

A mass is attached to a spring and moves with simple harmonic motion on a frictionless horizontal surface, as shown above.

If the mass is displaced −0.35 m from its

equilibrium position, the restoring force is 7.0 N.

What is the spring constant?

• −5.0 × 10^-2 N/m

• −2.0 × 10¹ N/m

• 5.0 × 10^-2 N/m

• 2.0 × 10¹ N/m