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3 years ago

The law of harmonies is referred to as _____.

Physics

1 answer:

AnnZ [28]3 years ago

3 0

Answer:

Kepler's third law

Explanation:

As per Kepler's third law all planets revolve around the Sun in such a way that their square of time period of revolution around the Sun is proportional to the cube of the mean radius.

It is given as

$T^2 = cR^3$

here

c = proportionality constant

R = mean radius

T = time period around the sun

So here all celestial body and all planets revolve as per the Kepler's third law which is also known as law of harmonies

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Answer:

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Explanation:

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Answer:

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Explanation:

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2 years ago

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3 years ago

A rectangular loop of area A is placed in a region where the magnetic field is perpendicular to the plane of the loop. The magni

mina [271]

Answer:

Induced emf, $\epsilon=-A\dfrac{B_{max}e^{-t/\tau}}{\tau}$

Explanation:

The varying magnetic field with time t is given by according to equation as :

$B=B_{max}e^{-t/\tau}$

Where

$B_{max}\ and\ t$ are constant

Let $\epsilon$ is the emf induced in the loop as a function of time. We know that the rate of change of magnetic flux is equal to the induced emf as:

$\epsilon=-\dfrac{d\phi}{dt}$

$\epsilon=-\dfrac{d(BA)}{dt}$

$\epsilon=-A\dfrac{d(B)}{dt}$

$\epsilon=-A\dfrac{d(B_{max}e^{-t/\tau})}{dt}$

$\epsilon=A\dfrac{B_{max}e^{-t/\tau}}{\tau}$

So, the induced emf in the loop as a function of time is $A\dfrac{B_{max}e^{-t/\tau}}{\tau}$ . Hence, this is the required solution.

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2 years ago

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Anna35 [415]

Answer:

Explanation:

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3 years ago