A force of 800 N is used to stop an object with a mass of 50 kg moving with a velocity of 35 m/s. How long will it take to stop this object? Variables:
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Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

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