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kherson [118]
3 years ago
7

You do 45.0 joules of work and 3.00 seconds how much power do you use​

Physics
1 answer:
Arada [10]3 years ago
8 0

Answer:

15 watt

Explanation:

Power is the rate at which work is done.

This means you divide the work done with the amount of time used to perform the work.

The formula for Power is : P = W/t  where;

W= work done in J = 45

t= time in seconds = 3 sec

P= 45/ 3 = 15 watt

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Unpolarized light with intensity 300 W/m^2 passes first through a polarizing filter with its axis vertical, then through a secon
SOVA2 [1]

Answer:

The angle from vertical of the axis of the second polarizing filter is 50.57⁰.

Explanation:

Given;

intensity of the unpolarized light, I₀ = 300 W/m²

intensity of emergent polarized light, I = 121 W/m²

let the angle from vertical of the axis of the second polarizing filter = θ

Apply Malus's law, intensity of emergent polarized light is given as;

I = I₀Cos²θ

Cos^2 \theta = \frac{I}{I_o} \\\\Cos^2 \theta =\frac{121}{300} \\\\Cos^2 \theta =0.4033\\\\Cos \theta = \sqrt{0.4033} \\\\Cos \theta = 0.6351\\\\\theta  = Cos^{-1} (0.6351)\\\\\theta  = 50.57 ^0

Therefore, the angle from vertical of the axis of the second polarizing filter is 50.57⁰.

8 0
2 years ago
A bus starts from rest. If it's velocity becomes 60 km/hr in 5 minutes, find
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Answer:

5 miles

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3 years ago
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