4 years ago

What is the speed of a wave that has a frequency of 3100 Hz and a wavelength of 0.012 m?

Physics

1 answer:

babymother [125]4 years ago

4 0

Answer:

v = 37.2 m/s

Explanation:

Given,

The frequency of the wave, f = 3100 Hz

The wavelength of the wave, λ = 0.012 m

The velocity of the propagation of the wave, v = ?

The relationship between the frequency, wavelength, and velocity of a wave is given by the formula

v = f x λ m/s

Substituting the values in the above equation

v = 3100 Hz x 0.012 m

= 37.2 m/s

Hence, the speed of the wave is, v = 37.2 m/s

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Answer:

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3 years ago

A rock weighs 110 N in air and has a volume of 0.00337 m3 . What is its apparent weight when submerged in water? The acceleratio

pickupchik [31]

Explanation:

It is given that,

Weight of the rock in air, W = 110 N

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$m=\dfrac{W}{g}$

$m=\dfrac{110\ N}{9.8\ m/s^2}$

m = 11.22 kg

We need to find the apparent weight of the rock when it is submerged in water. Apparent weight is equal to the weight of liquid displaced i.e.

$M=d\times V$

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W = 76.93 N

So, the apparent weight of the rock is 76.93 N. Hence, this is the required solution.

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3 years ago