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ludmilkaskok [199]

3 years ago

10

What would we see looking across a flat land of the earth was curved?

1 answer:

Scrat [10]3 years ago

7 0

You would see mountains off in the distance as if the earth was actually flat. but it seems flat because its so big

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What would we need to do to make an electromagnet strong enough to move cars and trains

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3 years ago

Welding, cutting, or heating in any enclosed spaces involving which of the following metals should be performed with local exhau

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4 years ago

g a stone with mass m=1.60 kg IS thrown vertically upward into the air with an initial kinetic energy of 470 J. the drag force a

otez555 [7]

Answer:

Height reached will be 28.35 m

Explanation:

Here we can use the work energy theorem to find the maximum height

As we know by work energy theorem

Work done by gravity + work done by friction = change in kinetic energy

$-mgh - F_f h = 0 - \frac{1}{2}mv_i^2$

now we will have

$-1.60(9.8)(h) - 0.900(h) = - 470$

$-16.58 h = -470$

$h = 28.35 m$

so here the height raised by the stone will be 28.35 m from the ground after projection in upward direction

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