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I am Lyosha [343]
4 years ago
11

Two polarizers have their transmission axes at an angle of . Unpolarized light of intensity I is incient on the firsit polarizer

. What is the intensity of the light transmitted by the second polarizer? A. I cos o B. 0.5 I cos C. 0.25 I cos-o D. I cose E. 0.5 I cose
Physics
1 answer:
iris [78.8K]4 years ago
8 0

Answer:

0.5ICOS^2\Theta

Explanation:

When the light of the intensity I passes through the first polarizer then the intensity of the light will become I_1=\frac{I}{2}

When this light of intensity I_1 is passes through second polarizer then according to malus law of intensity intensity will become I_2=I_1COS^2\Theta

As I_1=\frac{I}{2}

So finally intensity will become I_2=0.5ICOS^2\Theta

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steposvetlana [31]

Answer:

The average velocity of the sled is vavg = s/t.

Explanation:

Hi there!

The average velocity is calculated as the traveled distance over time:

vavg = Δx/Δt

Where:

vavg = average velocity.

Δx = traveled distance.

Δt = elapsed time.

We already know the traveled distance (s) and also know the time it takes the sled to travel that distance (t). Then, the average velocity can be calculated as follows:

vavg = s/t

Have a nice day!

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Ksenya-84 [330]

Answer:

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Explanation:

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This means that if there are no forces acting on an object, the object stays at rest (if it was not moving previously) or it continues moving with same velocity (if it was already moving) in a straight line.

In this problem, the Earth is initially moving around the Sun, with a certain tangential velocity v. When the Sun disappears, the force of gravity that was keeping the Earth in circular motion disappears too: therefore, there are no more forces acting on the Earth, and so by the 1st law of Newton, the Earth will continue moving with same velocity v in a straight line.

6 0
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50 *15=750
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mojhsa [17]
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8 0
3 years ago
Read 2 more answers
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