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3 years ago

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Why hasn't a perpetual motion machine been created?

1 answer:

masha68 [24]3 years ago

5 0

Thus, machines that extract energy from finite sources will not operate indefinitely, because they are driven by the energy stored in the source, which will eventually be exhausted. A common example is devices powered by ocean currents, whose energy is ultimately derived from the Sun, which itself will eventually burn out<span>. Machines powered by more obscure sources have been proposed, but are subject to the same inescapable laws, and will eventually wind down.</span>

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GarryVolchara [31]

Resultant displacement is 29.2 km at $83.1^{\circ}$ north of west

Explanation:

To solve the problem, we have to use the rules of vector addition, resolving first each vector along the x- and y- direction.

Taking east as positive x direction and north as positive y- direction, we have:

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And so, the magnitude is calculated using Pythagorean's theorem:

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