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4 years ago

Select the correct answer. Which electromagnetic waves have the highest frequencies in the electromagnetic spectrum?

Physics

1 answer:

Law Incorporation [45]4 years ago

4 0

Answer:

Your answer would be C, Radio waves.

Explanation:

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Unpolarized light is incident upon two polarization filters that do not have their transmission axes aligned. If 21% of the ligh

Debora [2.8K]

Answer:

49.6°

Explanation:

$I_0$ = Unpolarized light

$I_2$ = Light after passing though second filter = $0.21I_0$

Polarized light passing through first filter

$I_1=\frac{I_0}{2}$

Polarized light passing through second filter

$I_2=\frac{I_0}{2}cos^2\theta\\\Rightarrow 0.21I_0=\frac{I_0}{2}cos^2\theta\\\Rightarrow cos^2\theta=\frac{0.21I_0}{\frac{I_0}{2}}\\\Rightarrow cos\theta=\sqrt{\frac{0.21I_0}{\frac{I_0}{2}}}\\\Rightarrow \theta=cos^{-1}\sqrt{\frac{0.21I_0}{\frac{I_0}{2}}}\\\Rightarrow \theta=cos^{-1}\sqrt{0.21\times 2}\\\Rightarrow \theta=cos^{-1}\sqrt{0.42}\\\Rightarrow \theta=49.6^{\circ}$

The angle between the two filters is 49.6°

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4 years ago

The size of a quantity is called:

Dmitry [639]

Answer:

Magnitude

Explanation:

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3 years ago

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What is an element?

xeze [42]

Answer:

Hey Friend...

Explanation:

This is ur answer.....

<h2>4. A substance made of only one type of atom.</h2>

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2 years ago

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Describe and give an example of the doppler effect

Alexxandr [17]

The Doppler effect is when the frequency of a sound changes as the position of you and the sound changes. For example, if a fire truck comes at you, the siren sound will increase, then, after it passes you, then the sound will decrease. The thing that just happened is the Doppler effect!

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Why would a dewar flask not need a lid?

snow_tiger [21]

Answer:

because it does ent

Explanation:

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3 years ago