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NISA [10]
1 year ago
12

4.

Physics
1 answer:
galina1969 [7]1 year ago
8 0

Answer:

72%

Calculating Efficiency:

The amount of work obtained from a machine is always less than the amount of work put into it. Thisis because some of the work is lost due to friction. The efficiency of a machine can be calculated usingthe following formula:Percent Efficiency = (work output-Machine / work input-You) x 100%

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the potential at a point A is 30 V higher than at point B. How much work would you do moving 4.0 C charge from B to A?
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The average distance of the planet mercury from the sun is 0.39 times the average distance of the earth from the sun. How long i
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T_1=0.24y

Explanation:

Using Kepler's third law, we can relate the orbital periods of the planets and their average distances from the Sun, as follows:

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T_1^2=T_2^2(\frac{D_1}{D_2})^3\\T_1^2=(1y)^2(\frac{0.39D_2}{D_2})^3\\T_1^2=1y^2(0.39)^3\\T_1^2=0.059319y^2\\T_1=0.24y

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2 years ago
Slow break style requires this type of action​
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What make molecules​
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