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3 years ago

Please help! :(

Physics

1 answer:

Alona [7]3 years ago

5 0

Ep = F * d
F = 20 N
d = 5 m
Ep = 20 N * 5 m
Ep = 100 J

So pick B. A Newton Meter is a joule.

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Which shows a decrease in fluid pressure? A. A fan is turned from high speed to low speed. B. Oxygen is compressed as it is put

Volgvan

Answer:

Option A.

A fan is turned from high speed to low speed.

Explanation:

It is important to note that air is also a fluid.

In a system, static pressure of air increases with the speed of rotation of the fan. This is because when the speed of the fan is increased, the force with which it is pushing the air molecules is increased. Since pressure is a relationship between force and area, the pressure of the air molecules will be increased.

Conversely, when the speed of the fan is reduced, the priming force on the air molecules will be reduced, hence the pressure of the air will drop.

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3 years ago

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How is the electrostatic force affected when the magnitude of a charge is doubled?

BaLLatris [955]

The magnitude of the electrostatic force between two charges is given by:
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where
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q1 and q2 are the two charges
r is the separation between the two charges

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A) The magnitude of the electrostatic force doubles

4 0

4 years ago

Which of the following Illustrates 2 resistors in a series circult? A, B, C, D.

Kaylis [27]

Answer:

It's either B or D, I'm not positive which it is

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2 years ago

Avi, a gymnast, weighs 40 kg. She is jumping on a trampoline that has a spring constant value of 176,400 . If she compresses the

viva [34]

Answer

9 m

Explanation

The energy stored in a spring is given by:

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Where e is the compression and k is the spring constant.

Energy = 1/2 × 176,400 × 0.2²

= 3,528 N

The same energy will then be converted to potential energy given by:

Energy = mgh

Where m is the mass, g is the gravity and h is the height above the ground.

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3 years ago

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POSSIE

kotegsom [21]

Answer:

please find attached pdf

Explanation:

Download pdf

3 0

3 years ago