3 years ago

A box is pushed horizontally with constant speed across a rough horizontal surface.

Physics

1 answer:

Natasha_Volkova [10]3 years ago

6 0

Answer:

what is the answers? so i can't answer.

Explanation:

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A 1.0 kg ball falls from rest a distance of 19.6 m.

Nimfa-mama [501]

Answer:

192.08J

19.6m/s

Explanation:

Since there will be no potential energy when the ball is on the ground, the change in potential energy is equal to the potential energy at the start when the ball is 19.6m above the ground.

PE=mgh

=(1)(9.8)(19.6)

=192.08J

v²=u²+2as, where v is the final velocity, u is initial velocity, a is acceleration and s is distance. Initial velocity is 0 since it starts at rest.

v²=u²+2as

v²=0²+2(9.8)(19.6)

v=√384.16

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Answer:

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Explanation:

63 x 120 = 7,560 m

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If you act without reason or sound judgement, people will describe you as __________.

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irrational

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The traditional view of mangrove forests as wastelands and unhealthy environments helped promote their degradation because _____

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Raditionally mangrove forests were viewed as wastelands and unhealthy environments. People therefore reasoned that their removal would improve the health ...

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When Earth and the Moon are separated by a

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Using the Universal Gratitation Law, we have:

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Again applying the formula in the new situation, comes:

$F= \frac{MmG}{d^2} \\ F= \frac{29.4912*10^36}{(1.92*10^8)^2} \\ \boxed {F=8*10^{20}}$

Number 4

If you notice any mistake in my english, please let me know, because i am not native.

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