Question

(please help me)

If a wave has a wavelength of 13 meters and a period of 0.005, what's the velocity of the wave?
A. 260 m/s
B. 1,300 m/s
C. 2,600 m/s
D. 1,560 m/s
(please dont type any wrong answer on porpuse)

Answer 1

Answer:2,600 m/s

Explanation:13/ 0.005=2,600.

Answer 2

The velocity of the wavelength is
`2600 \mathrm{m} / \mathrm{s}`

Step-by-step explanation:

Given:

The wavelength of the wave= 13 meters

Time period of the wave=0.005seconds

To find:

velocity of the wave=?

Solution:

The velocity of the wave is defined as the product of frequency and wavelength.

Mathematically,

`v=f \lambda`

Where f is the frequency and λis the wavelength of the wave.

Finding the frequency using time period,

`f=(1)/(T)`

Substituting the value of time period we have,

`f=(1)/(0.005)`

`f=200 \mathrm{Hz}`

Now,

`v=f \lambda`

`v=200 * 13`

`v=2600 \mathrm{m} / \mathrm{s}`

Result:

The velocity of the wave with wavelength 13 meters and time period 0.005seconds is
`2600 \mathrm{m} / \mathrm{s}`.