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kogti [31]
4 years ago
15

If the same pressure is exerted over a greater area will more of less force result? Group of answer choices :

Physics
1 answer:
Zigmanuir [339]4 years ago
8 0

Answer:

More force

Explanation:

Pressure and force are related by the equation:

p=\frac{F}{A}

where

p is the pressure

F is the force

A is the area

We can re-arrange the equation as

F=pA

In this problem, the pressure is kept the same (p' = p) while the area is increased. As we can see from the previous equation, the force applied is directly proportional to the area: therefore, a greater area means also a greater force.

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If something is 50% efficient, how many joules of wasted energy will there be if 750J of energy is put in?
evablogger [386]

Answer:

375J of wasted energy

Explanation:

Efficiency=work output/work input×100%

50=w.o/750×100

750×50=100w.o

w.o=750×50/100

w.o=75×5

w.o=375J

Wasted energy=750J-375J

=375J

Aliter

If the machine is 50% efficient then it is also 50% inefficient

50%×750J=375J

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Answer:

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Explanation:

The explanation is in the attachment.

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Answer:

2nd option

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3 years ago
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