3 years ago

In 1781 with a reflecting telescope, Sir William Herschel discovered the planet WHAT

2 answers:

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Uranus was supposedly discovered by Sir William Herschel, but some records prove that John Flamsteed viewed it more than once in 1690

3 0

He discovered the planet<span> Uranus.</span>

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monitta

Ans is <span>I. Flowing groundwater that dissolves rock , such as limestone</span>

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2 years ago

Elden [556K]

Answer:

Efficiency = 80%

Explanation:

Given the following data;

Work output = 240 N

Work Input = 300 N

To find the mechanical efficiency of a machine;

$Efficiency = \frac {Out-put \; work}{In-put \; work} * 100$

Substituting into the equation, we have;

$Efficiency = \frac {240}{300} * 100$

$Efficiency = 0.8 * 100$

Efficiency = 80%

Therefore, the mechanical efficiency of the machine is 80 percent.

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2 years ago

LenaWriter [7]

The correct answer to this question is 15

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aleksley [76]

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oksano4ka [1.4K]

Answer:

Explanation:

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2 years ago