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Vikki [24]
3 years ago
9

What is the mass of a falling rock if it produces a force of 147 N?

Physics
1 answer:
SIZIF [17.4K]3 years ago
6 0
Hello there!

The formula for Force is F = MA, or 
Force = Mass x Acceleration

Well, since we have a rock falling in free fall, we can use the magical number 9.8 m/s^2 (also known as gravity). We have our value for force, 147N (Newtons).

So now, we have the value of our acceleration, A, and our value of the force, F, in our formula.

147 = 9.8M

To solve for M, we need to divide 147 by 9.8.

147/9.8 = 15

This means our Mass is 15 kg (remember your units!)

I hope this helps!
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The object will sink in the liquid in beaker 1.

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The density of an object relative to the density of a fluid determines if the object floats or sink in a fluid. The density of a material is the measure of the amount of mass of that material packed into a unit volume of that material.

For the beaker 1, the liquid in this beaker has a density of 0.5 g/cc, which is lesser than the density of the object (0.85 g/cc). This means that the object will add more mass than there should be to the volume of the space it displaces within the field. This results in the object sinking in the fluid.

For beaker 2, the liquid in this beaker has a density of 1 g/cc, which is more than the density of the object (0.85 g/cc). This means that the object will add less mass than there should be to the volume of the space it displaces within the field. This results in the object floating in the fluid.

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4 years ago
An Argon laser (λ = 5.0×102nm) shines down a silica glass fiber-optic cable with index of refraction 1.46. What is the speed of
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Answer:

The speed of the laser light in the cable, c_f=2.1\times 10^8\ m/s

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c_f=\dfrac{c}{n}

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c_f=2.05\times 10^8\ m/s

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c_f=2.1\times 10^8\ m/s

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Answer:

Explanation:

Using Snell's law

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where n₁ = 1.00 ( refractive index of air) and θ₁ = 30° n₂ = 1.660

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