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2 years ago

Explain 4 factors affecting centripetal acceleration

Physics

1 answer:

Anna11 [10]2 years ago

4 0

Answer:

it's speed

mass of the object

and the radius of the circle

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It follows that as the temperature decreases toward absolute zero, random molecular motion decreases.

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Unpolarized light of intensity 0.0288 W/m2 is incident on a single polarizing sheet. What is the rms value of the electric field

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the rms value of the electric field component transmitted is 3.295 V/m

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$E_{rms} = \frac{E_0}{\sqrt{2} } =\frac{E_{max}}{\sqrt{2} } \\\\E_{rms} = \frac{4.66}{\sqrt{2} }\\\\E_{rms} = 3.295 \ V/m$

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3 years ago

The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.724 W/m^2. What is the maximum v

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Answer:

a. 77.9 nT

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Given;

average value of the electromagnetic wave, E = 0.724 W/m^2

The average value of a Poynting vector is given by;

$S = \frac{1}{2\mu_o} *E_oB_o\\\\But, E_o = cB_o\\\\S = \frac{1}{2\mu_o} *cB_o^2\\\\cB_o ^2= 2\mu_o S\\\\B_o^2 = \frac{2\mu_o S}{c}\\\\B_o = \sqrt{ \frac{2\mu_o S}{c}} \\\\B_o = \sqrt{ \frac{2(4\pi*10^{-7}) (0.724)}{3*10^8}}\\\\B_o = 7.79*10^{-8} \ T\\\\B_o = 77.9*10^{-9} \ T\\\\B_o = 77.9 \ nT$

Therefore, the maximum value of the magnetic field in the wave is 77.9 nT.

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3 years ago

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Explain 4 factors affecting centripetal acceleration​

Explain 4 factors affecting centripetal acceleration