Assessment: Effects and Characteristics of Sound

Find the speed of sound in air at 0°C.

A sound wave travels at 1500 m/s (in water) with a frequency of 500 Hz. Find its wavelength.

A sailor sends a sonar pulse and hears its echo 2 s later (v=1500 m/s in water). Find the ocean depth.

A source emits sound at 600 Hz while moving away from a stationary observer at 30 m/s (v=340 m/s). Find the frequency heard.

In air (v=340 m/s), find the minimum distance for a person to hear a distinct echo.

An observer moves away from a stationary source at 10 m/s (v=340 m/s, f=450 Hz). Find the frequency heard.

A bat uses echolocation, emitting ultrasonic clicks and listening for their echoes to navigate in the dark. What does the TIME DELAY of the echo directly tell the bat?

Astronauts standing outside on the Moon cannot talk to each other directly through the air and must use radio instead. Why?

A source emits sound at 1000 Hz and moves toward a listener who is also moving toward the source, both at 20 m/s (v=340 m/s). Find the frequency heard.

Sound wave A travels at 340 m/s with wavelength 0.85 m. Find its frequency.