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Varvara68 [4.7K]
3 years ago
13

Q1: Using the known values of the mass of the earth and the radius of the earth, calculate the

Physics
1 answer:
kupik [55]3 years ago
3 0

Answer:

m g = G * m * M / R^2      force of attraction

g = G * M / R^2

g = 6.67E-11 * 5.96E24 / (6.37E6)^2

g = 6.67 * 5.96 / 6.37^2 * 10^1

g = .98 * 10 = 9.8 m/s^2

Q2.

d g = G M * (-2 R^-3 dR ) = -2 G M / R^3       (very small where dR = 1)

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Two electric charges, held a distance, d, apart experience an electric force of magnitude, F, between them. If one of the charge
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Answer:

When one of charge is doubled, the magnitude of the force between them gets doubled.

Explanation:

The electric force between two electric charges is given by :

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If one of the charges is doubled in magnitude while maintaining the same separation between the charges, q_1'=2q_1

New force becomes,

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When one of charge is doubled, the magnitude of the force between them gets doubled. Hence, this is the required solution.

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A car manufacturer claims an enginerring breakthrough, since it successfully reduced its interior noise level from 65dB to 55 dB
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Yes, that is truly amazing.

They significantly reduced the noise's intensity by 90%, that might be proper reaction.

<h3>What is noise?</h3>
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Tire or false
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A starter pistol is fired 150m away from the spectators who hear the gun 0.5s after they see it fired. How fast does sound trave
Natali [406]

Answer:

300m/s

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