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3 years ago

11

Jack has a weight of 300 N and sits 2.0 m from the pivot of see - saw. Jill has a weight of 450 N and sits 1.5 m from pivot. Who

will move down?

1 answer:

coldgirl [10]3 years ago

3 0

Answer:

Jill will move down first

Explanation:

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a student in your class says "electromagnetic waves can travel through outer space but mechanical waves can’t.” is it this stude

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Answer:

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Explanation:

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Again applying the formula in the new situation, comes:

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3 years ago

A particle performing uniform circular motion has angular momentum L. What will be the new angular momentum, if its angular freq

GaryK [48]

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Explanation:

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3 years ago

The Kelly family and the Garcia family each used their sprinklers last summer. The water output rate for the Kelly family's spri

elena55 [62]

Answer:

30 hours

15 hours.

Explanation:

Let the Kelly used sprinkler for t hours and Gracia used the sprinkler for the rest ie (45 - t) hours .

Water output by Kelly = (35 x t) L

Water output by Gracia = 20 ( 45 - t ) L

Total output = 35t + 20(45 - t)

So, 35 t + 20 (45 - t ) = 1350

35 t + 900 - 20 t = 1350

15 t = 450

t = 30 hours

So Kelly used sprinkler for 30 hours and Gracia used it for 45 - 30 = 15 hours.

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3 years ago