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Alika [10]
3 years ago
11

If the sun is scaled down to 9.5 inches in diameter, the earth would be about _____ inches in diameter

Physics
1 answer:
vovangra [49]3 years ago
7 0

Answer: 0.087 inches

Explanation:

This problem can be solved applying the <u>Rule of three</u>, which is a  mathematical rule to find out an amount that is with another quantity given in the same relation as other two also known.

In this sense, the actual diameter of the Sun is 1,391,020 km and the actual diameter of the Earth is 12,742 km.

Now, applying the <u>Rule of three:</u>

<u />

Sun 1,391,020 km ------ 9.5 inches

Earth 12,742 km --------- ? inches

? inches=\frac{(12,742 km)(9.5 inches)}{1,391,020 km}

? inches=0.087 inches

Therefore:

If the sun is scaled down to 9.5 inches in diameter, the earth would be about <u>0.087 inches </u>in diameter.

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A 2000 kg car experiences a braking force of 10000N and skids to a 14 m stop. What was the speed of the car just before the brak
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Answer:

V = 11.83 m/s

Explanation:

Given the following data;

Mass = 2000 kg

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To find the final velocity of the car;

First of all, we would determine the acceleration of the car;

Acceleration = force/mass

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Acceleration = 5 m/s²

Next, we would use the third equation of motion to find the final velocity;

V^{2} = U^{2} + 2aS

Where;

V represents the final velocity measured in meter per seconds.

U represents the initial velocity measured in meter per seconds.

a represents acceleration measured in meters per seconds square.

S represents the displacement measured in meters.

Substituting into the equation, we have;

V² = 0² + 2*5*14

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V = √140

V = 11.83 m/s

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3 years ago
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Mashcka [7]

Answer:

for 4.567 I can't tell if it x 10^{3} or x 10^{5} so:

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2 years ago
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