# 1.calculate the speed of waves in water that are 0.4m apart and have a frequency of 2hz? 2....

## Question:

1.calculate the speed of waves in water that are 0.4m apart and have a frequency of 2hz?

2. sound waves travel at approximately 340m/s,

a. what is the wavelength of a sound with a frequency of 20Hz?

b. what is the wavelength of a sound with a frequency of 20 kHz?

3. A bat flying in a cave emits a sound pulse and receives its echo in one second. how far away is the cave wall?

## Waves:

Waves have two types, longitudinal and transform, both types follow the same mathematics. All waves carry energy as they move through their perspective mediums.

## Answer and Explanation: 1

Become a Study.com member to unlock this answer!

#### Speed

The speed of a wave is defined as:

{eq}v = \lambda \times f \\ \lambda = wavelength \\ f = frequency {/eq}

{eq}v = 0.4(2) = 0.8...

See full answer below.