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Nady [450]
3 years ago
14

Friction acts in a direction blank to the direction of the object's motion?

Chemistry
2 answers:
katen-ka-za [31]3 years ago
6 0
The answer would be opposite.
Friction acts in a direction opposite to the direction of the objects motion.
olya-2409 [2.1K]3 years ago
5 0
<span>The direction of the frictional force on a moving object is opposite the direction of motion.</span>
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Answer:

1.21 times

Explanation:

The energy of a wave is proportional to the square of the amplitude of the wave.

Mathematically:

E\propto A^2

where

E is the energy of the wave

A is its amplitude

In this problem, the amplitude of the wave increases by a factor of 1.1; it means that the new amplitude can be written as

A'=1.1 A

Therefore, this means that the energy of the wave increases by a factor:

E'\propto A'^2=(1.1 A)^2 = 1.1^2 A^2 =1.21 A^2 = 1.21 E

Therefore, the energy of the wave increases by a factor 1.21.

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3 years ago
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Answer:

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nirvana33 [79]

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