3 years ago

When does a bouncing ball have the least amount of kinetic energy?

Physics

2 answers:

Tasya [4]3 years ago

8 0

When it stops bouncing

Nuetrik [128]3 years ago

3 0

Answer: win it no bouncing

Explanation:

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3 years ago

Which of the following is true about this lever?

zysi [14]

As we can see here the lever has two forces at two ends

1. 300 N

2. 200 N

now we need to find the Torque on the lever about the fulcrum

so we will have

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2. counterclockwise torque due to force at left end

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3 years ago

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Metal sphere A has a charge of -2 units and an identical sphere B has a charge of -4 units. If the spheres are brought into cont

shusha [124]

Answer:

q1 = q₂= -3

therefore each sphere has the same charge of -3 untis

Explanation:

The metallic spheres have mobile charge, so when the two spheres come into contact the total charge

Q_total = q₁ + q₂

Q_total = -2 -4

Q_total = -6 units

it is distributed in between the two spheres evenly since the charges of the same sign repel each other.

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3 years ago

It takes 8 seconds for a pulley system to lift a load that weights 400N to a height of 10 m. How much power is required?.

mariarad [96]

Answer:

C. 500 watts

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power is defined as the rate of work done

$power=\frac{work.done}{time}$

When a force causes a object to move, work is being done on the object by the force.

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$power=\frac{4000J}{8s}\\=500 W$

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4 years ago