3 years ago

Why is the rock cycle really a cycle?

1 answer:

6 0

The rock cycle is a group of changes that describes the formation, breakdown, and reformation of a rock as a result of sedimentary, igneous, and metamorphic processes. All rocks are made up of minerals. Volcanic processes form extrusive igneous rocks. Extrusive rocks cool quickly on or very near the surface of the earth.

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What happens to a wave if its frequency decreases?

iragen [17]

Answer:hen frequency increases more wave crests pass a fixed point each second. That means the wavelength shortens. So, as frequency increases, wavelength decreases. The opposite is also true—as frequency decreases, wavelength increases.

Explanation:brainliest please

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3 years ago

g Determine the magnetic field midway between two long straight wires 2.0 cm apart in terms of the current I in one when the oth

MrMuchimi

Answer:

$B_{net}$ = $(2\times 10^{-5}T/A).(I-25A)$

Explanation:

Given :

the distance between the two wires is = 2 cm

= 0.02 m

Current in one of the wire, I = 25 A

Now we know that, when the direction of the current is same that is in one direction , the magnetic field at the mid point in between the two wires will oppose each other.

Therefore we know that

$B_{net}$ = $\frac{\mu _{o}\times I_{1}}{2\pi r_{1}}-\frac{\mu _{o}\times I_{2}}{2\pi r_{2}}$