3 years ago

30 points please answer asap!

2 answers:

6 0

Answer:

The ball is at its max Potential energy because if it falls and hits the ground it will be at its max kinetic energy so since sitting high up it is equal to max potential energy. PE=784 J Trust ME that guy is wrong.

Explanation:

tino4ka555 [31]3 years ago

5 0

Answer:

False, if its not moving there is no potential energy.

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A ladder is balanced against a wall without moving. What<br> must be true about this ladder?

Mandarinka [93]

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3 years ago

An 81.5-kg man stands on a horizontal surface.

Elza [17]

Answer:

a)V= 0.0827 m³

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Explanation:

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81.5 = V x 985

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3 years ago

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Sloan [31]

Answer:

The force exerted is 318.86 N

Explanation:

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3 years ago

Read 2 more answers

An electric motor rotating a workshop grinding wheel at 1.06 102 rev/min is switched off. Assume the wheel has a constant negati

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Answer:

t = 106π / 30*2.1

Explanation:

$w_{i} = 1.06*10^{2}$ => 106

=> 106 x 2π/60

=> 106/30π

∝ = -2.1 rad/sec²

$w_{f}$ => 0

$w_{f}$ = $w_{i}$ + ∝t

∴ ( $w_{f}$ - $w_{i}$ ) / ∝ = t

t = 106π / 30*2.1

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3 years ago