Exam 10: Waves and Sound

What is the relationship between wave frequency and period? What is the period, in seconds, that corresponds to each of the following frequencies: (a)10 Hz, (b)0.2 Hz, (c)60 Hz?

A boat at anchor is rocked by waves whose crests are 40 m apart and with wave speed 10 m/s. These waves reach the boat once every

A weight suspended from a spring bobs up and down one complete cycle every 2 s. Its frequency is

The Doppler effect is characteristic of

A 60 vibration per second wave travels 30 m in 1 s. Its frequency is

Our ears are best at hearing

High pitched sound has a high

A wave is a vibration in

A child swings to and fro on a playground swing. If the child stands on the swing rather than sitting on it, the time for a to-and-fro swing is

Reverberation is a case of

Which of the following is a longitudinal wave?

A bow wave is produced in water when the speed of an object

Compressions and rarefactions normally travel

A wiggle in time is a

The frequency of the second hand on a clock is

The speed of a sound wave in air depends on

The vibrations of a longitudinal wave move in a direction

The quality of a musical note has to do with its

Resonance occurs when a 200-Hz tuning fork encounters a sound wave with a frequency of

A Doppler effect occurs when a source of sound moves