2 years ago

Water that soaks into Earth may become _____ under the surface.

Physics

1 answer:

larisa [96]2 years ago

5 0

If it soaks into the earths surface it becomes ground water

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Explanation:

Answer A: A surface wave is a wave that travels along the surface of a medium.

Answer B, C: Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission.

Answer D: The sentence in the answer D does not fit to the blank in the definition ( of the question )

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3 years ago

4. A metal fork has a density of 7.8 g/cm ³. Is this fork made up of aluminum?

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3 years ago

What will the pressure of gas be if the temperature rises to 87°C

weeeeeb [17]

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2 years ago

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2 years ago

A grating that has 3900 slits per cm produces a third- order fringe at a 28.0° angle. What wavelength of light is being used? Ex

Zolol [24]

Explanation:

Given that,

Number of slits per cm, $N=3900\ lines/cm=390000\lines/m$

The third fringe is obtained at an angle of, $\theta=28$

We need to find the wavelength of light used. The grating equation is given by :

$d\ sin\theta=n\lambda$

$d=\dfrac{1}{N}=\dfrac{1}{390000}$

$d=2.56\times 10^{-6}\ m$

$\lambda=\dfrac{d\ sin\theta}{n}$ , n = 3

$\lambda=\dfrac{2.56\times 10^{-6}\times \ sin(28)}{3}$

$\lambda=4.006\times 10^{-7}\ m$

$\lambda=400\ nm$

So, the wavelength of the light is 400 nm. Hence, this is the required solution.

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3 years ago