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Delicious77 [7]

3 years ago

6

A boy pulls a sled 46 m across a flat field with a force of 120 N. The force acts on the sled through a rope at a 23° angle with

the horizontal. What is the work the boy does on the sled? (Round your answer to two significant figures.)

1 answer:

ivann1987 [24]3 years ago

8 0

Answer:

5520

Explanation:

w=f×d

w=120×46

w=5.52×10^3

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Answer:

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Since the charge is at the centre of two concentric spheres, we use the formula for electric potential due to a point charge. V = kq/r. Let r₁ be the radius of the sphere with potential, V₁ = 200 V and r₂ be the radius of the sphere with potential, V₂ = 82.0 V. From V = kq/r, r = kq/V. So that r₁ = kq/V₁ and r₂ = kq/V₂. The magnitude of the difference r₁ - r₂ is the distance between the two surfaces. q the charge equals 1.63 × 10⁻⁸ C

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The distance between them is 1.06 m

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