Convert the following: 52 miles/hour to meters/second

Physics

1 answer:

Komok [63]3 years ago

5 0

Answer:

23.246 metres per second

Explanation:

divide the speed value by 2.237

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Suppose you are in an elevator. As the elevator starts upward, its speed will increase. During this time when the elevator is mo

vova2212 [387]

Answer: The answer is A.

Explanation:

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3 years ago

lasers 1 and 2 emit light of the same color, and the electric field in the beam of laser 1 is twice as strong as the e-field of

bonufazy [111]

Answer:

The intensity of laser 2 is 4 times of the intensity of laser 1.

Explanation:

The intensity in terms of electric field is given by :

$U=\dfrac{1}{2}\epsilon_o E^2$

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It means, $U\propto E^2$

In this problem, lasers 1 and 2 emit light of the same color, and the electric field in the beam of laser 1 is twice as strong as the e-field of laser 2.

Let E is electric field in the beam of laser 1 and E' is the electric field in the beam of laser 2. So,

$\dfrac{U}{U'}=(\dfrac{E}{E'})^2$