Question

what is the small ripples on water is 0.5s and their wavelength is 10cm,then what is the speed of the waves​

Answer 1

Answer:

QUESTION:

If the time period of small ripples on water is 0.5s and their wavelength is 10cm,then what is the speed of the waves?

ANSWER:

Given:

Time period = 0.5s

Wavelength = 10cm

To Find:

Speed of waves.

Solution:

⇒ No. of ripples made in 0.5 sec = 1

⇒ No. of ripples made in 1 sec = 1 * 2 = 2

We know that, frequency is the number of occurences per unit time, i.e., per second.

So,

Frequency of ripples = 2 ————(1)

We are given that,

⇒ Wavelength = 10cm = ¹⁰/₁₀₀ m = ¹/₁₀ m = 0.1m————(2)

We know that,

⇒ Speed = Frequency * Wavelength

⇒ Speed = 2 * 0.1

⇒ Speed = 0.2m/sec

Formula Used:

Speed = Frequency * Wavelength

Imp. Definitions:

Frequency = number of occurences per unit time

Wavelength = distance between 2 crests or 2 troughs in a wave.

Speed = distance traveled by a given point on the wave (such as a crest) in a given interval of time

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Answer 2

Answer:

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