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3 years ago

A wave with a wavelength of 125 meters is moving at a speed of 20 m/s. What is it’s frequency

Physics

1 answer:

IceJOKER [234]3 years ago

8 0

Answer:

0.16Hz

Explanation:

wavelength (λ) = 125 meters

speed (V) = 20 m/s

frequency (F) = ?

Recall that frequency is the number of cycles the wave complete in one

second. And its value depends on the wavelength and speed of the wave.

So, apply the formula V = F λ

Make F the subject formula

F = V / λ

F = 20 m/s / 125 meters

F = 0.16 Hz

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2 years ago

2. Two long parallel wires each carry a current of 5.0 A directed to the east. The two wires are separated by 8.0 cm. What is th

Gre4nikov [31]

Answer:

The magnitude of magnetic field at given point = $5.33$ × $10^{-5}$ T

Explanation:

Given :

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From biot savert law,

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⇒ $B = \frac{\mu_{0}i }{2\pi R}$

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so we write,

∴ $B = B_{1} + B_{2}$

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3 years ago

In which changes of state do atoms lose energy

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2 years ago

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Answer: