Conceptual Physics Chapter 25: Vibrations of Waves

The source of all wave motion is a

• vibrating object.

• harmonic object.

• wave pattern.

• region of variable high and low pressure.

Which of the following is not a transverse wave?

• light

• radio

• sound

• all of these

The vibrations of a transverse wave move in a direction

• at right angles to the direction of wave travel.

• along the direction of wave travel.

The vibrations of a longitudinal wave move in a direction

• along the direction of wave travel.

• at right angles to the direction of wave travel.

How many vibrations per second are associated with a 101-MHz radio wave?

• 101,000,000

• less than 101,000,000

• more than 101,000,000

Radio waves travel at the speed of light, 300,000 km/s. The wavelength of a radio wave received at 100 megahertz is

• 0.3 m.

• 3.0 m.

• 30 m.

• 300 m.

The frequency of a simple pendulum does not depend on

• its length.

• the acceleration due to gravity.

• its mass.

If the frequency of a certain wave is 10 hertz, its period is

• 0.1 seconds.

• 10 seconds.

• 100 seconds.

• none of these.

A weight or mass on the end of a spring bobs up and down one complete cycle every two seconds. Its frequency is

• 0.5 hertz.

• 2 hertz.

• neither of these.

A weight or mass on the end of a spring bobs up and down one complete cycle every two seconds. Its period is

• 0.5 seconds.

• 1 second.

• 2 seconds.

• none of these.