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guajiro [1.7K]
3 years ago
15

Help pls it’s urgent

Physics
1 answer:
ycow [4]3 years ago
8 0
The result wave Will have a greater amplitude than both waves
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Explanation:

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What happens to the density of a substance as its temperature increases?
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In longitude waves, the medium moves parallel to the direction of energy transport
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A pulley system has an efficiency of 74.2%. If you perform 200 J of work, how much useful work does the pulley perform?
kirill115 [55]

<span>Efficiency is the measure of how efficient a process is. It is used to assess the ability of a process in avoiding waste energy, materials, money and time in doing a desirable output. It is calculated as;

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7 0
3 years ago
HELP PLS !!!!!!!!!!!!!!!!!!!!]
irina [24]

Answer:

<em>0.25</em>

Explanation:

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\sum F_x = ma

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a = 2.42m/s²

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Substitute into the formula;

n = 2.42/9.8

n = 0.25

<em>Hence the coefficient of kinetic friction is 0.25</em>

<em></em>

6 0
3 years ago
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