3 years ago

WHICH IS THE HARDEST SUBSTANCE IN EARTH?

Physics

2 answers:

PIT_PIT [208]3 years ago

8 0

Diamond is the hardest naturally occurring substance found on Earth.

wlad13 [49]3 years ago

3 0

Diamond is the hardest substance in Earth.

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At what height is an object that weighs 490 newtons if its gravitational potential energy is 4900 J?

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Answer:

The height at which the object is moved is 10 meters.

Explanation:

Given that,

Force acting on the object, W = F = 490 N

The gravitational potential energy, P = 4900 J

We need to find the height at which the object is moved. We know that the gravitational potential energy is possessed due to its position. It is given by :

$P=mgh\\\\h=\dfrac{P}{mg}\\\\h=\dfrac{4900\ J}{490\ N}\\\\h=10\ m$

So, the height at which the object is moved is 10 meters. Hence, this is the required solution.

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