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Arisa [49]
3 years ago
6

A screw is a type of simple machine. If we look closely at a screw, we see that it is really a _________ wrapped around a centra

l core.
Physics
2 answers:
nordsb [41]3 years ago
6 0

D. Inclined Plane

" Try this! Take a piece of paper and fold it into a right triangle. Wrap it around a pencil. That is a screw - an inclined plane wrapped around a central core."

-usatestprep

Andrej [43]3 years ago
4 0
Is is really an inclined plane 
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125.83672 seconds

Explanation:

P = Power of the horse = 1 hp = 746 W (as it is not given we have assumed the horse has the power of 1 hp)

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Work done would be equal to the potential energy

W=mgh\\\Rightarrow W=103\times 9.8\times 93\\\Rightarrow W=93874.2\ J

Power is given by

P=\frac{W}{t}\\\Rightarrow t=\frac{W}{P}\\\Rightarrow t=\frac{93874.2}{746}\\\Rightarrow t=125.83672\ seconds

The time taken by the horse to pull the professor is 125.83672 seconds

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