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sammy [17]
3 years ago
11

Which of the following statements is true based on the law of conservation

Physics
1 answer:
ipn [44]3 years ago
7 0

Answer:

B

Explanation:

The mass of something before it's been processed is the same as it's mass after the process.

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31 seconds

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Numerical Problems:
dangina [55]
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\boxed{\sf Velocity=\dfrac{Displacement}{Time}}

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2 years ago
Read 2 more answers
If riding a lawnmower engine exerts 19 hp in one minute to move the lawnmower how much work is done
ioda

Answer:

the work done by the lawnmower is 236.14 J.

Explanation:

Given;

power exerted by the lawnmower engine, P = 19 hp

time in which the power was exerted, t = 1 minute = 60 s.

1 hp = 745.7 watts

The work done by the lawnmower is calculated as follows;

Work = Energy = \frac{Power}{time} \\\\Work = \frac{(19 \times 745.7)}{60} = 236.14 \ J

Therefore, the work done by the lawnmower is 236.14 J.

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3 years ago
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