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3 years ago

Question in picture.

Physics

2 answers:

Ber [7]3 years ago

4 0

The answers are to small to see.

Agata [3.3K]3 years ago

4 0

<h2>Answer:</h2>

<u>The correct choice is </u><u>C) 17.78 m/s</u>

<h2>Explanation:</h2>

According to the addition of vectors we add the magnitudes of vectors and the direction is seen in accordance to the resultanat vector. If the direction is same fro both vectors then simply the magnitude is added and direction remains the same. If the direction is opposite then the magnitude is subtracted. In the given two vectors the direction o f both the vectors is same so we simply add them as 12.57 + 5.21 = 17.78

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Complete Question

The complete question is shown on the first uploaded image

Answer:

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Explanation:

From the question we are told that

The refractive index of water is $n_w = 1.33$

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$v_e = \frac{ c}{n_e }$

=> $v_e = \frac{3.0 *10^{8}}{1.36 }$

=> $v_e = 2.21 *10^{8} \ m/s$

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