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kari74 [83]
2 years ago
10

How much force is required to keep 780 n box moving at constant velocity across the floor of the friction force between the box

and the floor is 160 n
Physics
1 answer:
Vladimir [108]2 years ago
7 0

Answer:

160N force requred

Explanation:

160N force required to move the block with constant velocity.

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Unpolarized light of intensity I=10 falls on two successive polarizer wheels with the angle between the polarizer wheels e-60°.
yan [13]

Answer:

I=\frac{10}{4}

Explanation:

A polarizer changes the orientation of the oscillations of a light wave.

I₀ = Intensity of unpolarized light = 10

θ = Angle given to the polarizer = 60°

Intensity of light

I = I₀cos²θ

⇒I = 10cos²60

\\\Rightarrow I=10\times \frac{1}{2}\times \frac{1}{2}\\\Rightarrow I=\frac{10}{4}

So, the after passing through the second polarizer is \mathbf{\frac{10}{4}}

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Find the Acceleration of a car with the mass of 1200kg and a force of 11x10^3 N
larisa86 [58]

Answer:

<h2>9.17 m/s²</h2>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

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m is the mass

From the question we have

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We have the final answer as

<h3>9.17 m/s²</h3>

Hope this helps you

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