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AURORKA [14]
3 years ago
10

I need help with #4 and #5?

Physics
1 answer:
algol [13]3 years ago
3 0

A

Explanation:

just  pick a

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If  a capacitor's dielectric constant is vacuum its dielectric constant is k will be equal to 1.

<u>Explanation:</u>

Relative permittivity of  a dielectric substance is referred to as its dielectric constant. Relative permittivity/dielectric constant k is a dimensionless quantity that is the ratio of absolute permittivity and vacuum permittivity.

It is given by the expression

k=k=ε /ε0

where ε denotes absolute permittivity and  ε0 denotes permittivity of vacuuum.

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dielectric constant of vacuum is 1 .

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An astronaut is traveling in a space vehicle moving at 0.490c relative to the Earth. The astronaut measures her pulse rate at 66
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To solve the exercise it is necessary to use the reciprocal Lorenz factor of the special theory of relativity with the pulse rate.

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Here v is the velocity and c the light speed.

PART A) For the given values we can replace it at the previous equation,

\Xi = Pulse_{astronaut} *\sqrt{1-\frac{v^2}{c^2}}

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PART B ) If the speed of vehicle is 0.94c:

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Setler79 [48]
The awnser is tranverse wave
hope that helps

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