Physics 112 Quiz 1 Ch 16

Lambda becomes longer.

Lambda becomes shorter.

Lambda stays the same if f is unchanged.

No. the speed of sound is a "constant" so f must change along with lambda.

No. the speed of sound, wavelength and frequency will all be unchanged.

At progressively longer lambda and lower frequency

At progressively shorter lambda and lower frequency

At progressively longer lambda and higher frequency

At progressively shorter lambda and higher frequency.

At progressively higher frequencies but constant wavespeed and wavelength.

Lower than for their normal speech in air

The same as for their normal speech in air.

Greater than for their normal speech in air

Unable to be heard by stationary observers

More than one of these is correct

3.2E-7 W

1.0E-2 W

3.1E2 W

1.3E3 W

None of these

Nodes at both ends

Loops or antinodes at both ends

A loop or antinode at one end and a node at the other end.

Nodes but no loops or antinodes since this motion would destroy the standing wave.

None of these

The lower the pitch of the resulting sound

The higher the pitch of the resulting sound

The pitch stays the same the stand waves just get longer

The pitch stays the same the standing waves just get shorter

None of these

High intensities

High frequencies

Long wavelengths

All of these

None of these

Marine environment in which the shell was formed

Shell blocking all other sound from reaching you.

Action of this shellular telephone that transmits sounds from distant shores to you.

Sounds whose intensities are too small to be audible under normal conditions are enhanced by reflection within the shell producing noise like the ocean.

Sounds whose intensities are too small to be audible under normal conditions are enhanced by transmission through the solid walls of the shell, producing noise like the ocean.

0.027 m

Less than 10 hz

3.2E3 hz

6.4E3 hz

1.3E4 hz