Exam 5: Wave Motions and Sound

The fundamental frequency of a vibrating string has a length that is 1/2 the wavelength.

Piano tuners listen to the beat frequency between their tuning fork and the wire they are tuning.

When you are moving toward a stationary source of a sound, its frequency will appear lower than it actually is.

Longitudinal waves with a frequency above 20,000 Hz are

Through which medium will sound travel most rapidly?

Reflected sound waves that are heard within 0.1 s

A noise level of 65 decibels is measured for

Sound travels faster through cold, denser air than through warm, less dense air.

A sound of 20 dB intensity is twice as loud as one of 10 dB.

The amplitude of a wave is the distance from the crest to the equilibrium position.

Transverse mechanical waves can pass through

The restoring force of a spring is proportional to the displacement of the object at the end.

If v = $\lambda$ f, then how are $\lambda$ and f related?

The time that is required for a vibrating object to complete one full cycle is called

You are able to hear sounds from farther away on a cool night because sound waves are refracted toward

The frequency is the time required for one complete cycle.

The bending of a wave at the boundary between two media is called

Waves that move through air are transverse.

Resonance occurs at a (an)

The lowest frequency possible in a vibrating string undergoing resonance is