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nevsk [136]
2 years ago
7

How far from the surface of Earth is the magnitude of Earth's gravitational field equal to 7.86 N/kg?

Physics
1 answer:
AfilCa [17]2 years ago
4 0

Answer:

7.48 x 10⁵ m

Explanation:

g = 7.86 N/kg

M = 5.97 x 10²⁴ kg, R = 6.37 x 10⁶ m.

Find height h

g = GM/(R + h)²

(R + h)² = GM/g = 6.67 x 10⁺¹¹ x 5.97 x 10²⁴ /7.86 = 5.066 x 10¹³

R + h = 7.12 x 10⁶ m

so

h =  7.12 x 10⁶ - 6.37 x 10⁶ = 7.48 x 10⁵ m

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Answer:

The answer to your question is: total energy = 30100.4 J

Explanation:

Kinetic energy (KE) is the energy due to the movement of and object, its units are joules (J)

Data

mass = 1280 kg

speed = 4.92 m/s

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Formula

KE = \frac{1}{2} mv^{2}

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Process

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KE = \frac{1}{2} (1280)(4.92)^{2}

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Total = 15492.1 + 14608.3

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