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lara31 [8.8K]
2 years ago
10

How long would it take a leopard, running at an average speed of 20 m/s to travel 500 m?

Physics
1 answer:
alexandr1967 [171]2 years ago
4 0

Answer:

25 seconds

Explanation:

500/20

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A young woman with normal distant vision has a 10.0% ability to accommodate (that is, increase) the lens strength (a.k.a, lens p
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Answer:

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Explanation:

Here is the complete question

The normal power for distant vision is 50.0 D. A young woman with normal distant vision has a 10.0% ability to accommodate (that is, increase) the power of her eyes. What is the closest object she can see clearly?

Solution

Now, the power of a lens, P = 1/f = 1/u + 1/v where f = focal length of lens, u = object distance from eye lens and v = image distance from eye lens.

Given that we require a 10 % increase in the power of the lens to accommodate the image she sees clearly, the new power P' = 50.0 D + 10/100 × 50 = 50.0 D + 5 D = 55.0 D.

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1/u = 55.0 m⁻¹ - 1/0.02 m

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u = 1/5.0 m⁻¹

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So, at 55.0 dioptres, the closet object she can see is 20 cm from her eye.

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