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Maslowich
3 years ago
15

Plsssss I need te answer quick​

Physics
2 answers:
defon3 years ago
5 0

Answer:

I will tell in order of pictures ok

Explanation:

pic1 transmission

pic2 reflection

pic3 refraction

pic4 absorbtion

jok3333 [9.3K]3 years ago
3 0

Explanation:

reflection ... . .......

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The force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of
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Explanation:

It is given that, the force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of the car and the square of the car's speed such that,

F\propto \dfrac{mgv^2}{r}

F=\dfrac{kmgv^2}{r}

mg is the weight of the car

r is the radius of the curve

v is the speed of the car

Case 1.

F = 640 pounds

Weight of the car, W = mg = 2600 pound

Radius of the curve, r = 650 ft

Speed of the car, v = 40 mph

640=\dfrac{k(2600)(40)^2}{650}

k = 0.1

Case 2.

Radius of the curve, r = 750 ft

Speed of the car, v = 30 mph

F=\dfrac{0.1\times 2600\times (30)^2}{750}

F = 312 N

Hence, this is the required solution.

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3 years ago
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Tasya [4]
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A man applies a force of 100 N to a rock for 60 seconds, but the rock does not move what is the amount of work done by the man o
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Seriously I have no idea. I need help with my homework.

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