3 years ago

Can someone please help me with science.

Physics

1 answer:

vichka [17]3 years ago

5 0

1 is b because a runs 20 and b rus 102 is c

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The displacements are not equal. While their direction is the same, their length (i.e., distance or magnitude) is not. A is longer than B.

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The element niobium, which is a metal, is a superconductor (i.e., no electrical resistance) at temperatures below 9 K. However,

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3 years ago

An isotropic point source emits light at wavelength 510 nm, at the rate of 170 W. A light detector is positioned 410 m from the

Wewaii [24]

Answer:

$\frac{dB}{dt} = 3.03 \times 10^6 T/s$

Explanation:

As we know that the power emitted by the source is given as

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now we know that

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now we know that energy density is given as

$u = \frac{B^2}{2\mu_0} + \frac{\epsilon_0 E^2}{2}$

now we have

$E = B c$

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intensity is defined as

$I = \frac{P}{A}$

now we have

$\frac{I}{c} = u = \frac{B^2}{2\mu_0}$ [/tex]

now we have

$\frac{dB}{dt} = \omega B$

$\frac{dB}{dt} = \frac{2\pi c B}{\lambda}$

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here we have

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$I = 8.05 \times 10^{-5}$

now we have

$\frac{dB}{dt} = \frac{2\pi\sqrt{2\mu_0 c (8.05 \times 10^{-5})}}{(510 nm)}$

$\frac{dB}{dt} = 3.03 \times 10^6 T/s$

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3 years ago

How long does it take to fall 500 meters?

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