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DENIUS [597]
2 years ago
13

Please help, I need help with this test question

Physics
1 answer:
Arturiano [62]2 years ago
4 0

I believe this is right-

for the first question, it should be fluffy

and for the second it should be spot

potential energy is unused

kinetic energy is being used

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What happens when the thermal energy of a substance increases?
Sonja [21]

When thermal energy of a substance increases, it's entropy(randomness) & Kinetic energy increases.

For more appropriate answer, you should put the options 'cause there could be more than one answer for this question.

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3 years ago
When a golf club hits a 0.0459 kg ball at rest, it exerts a 2380 N force for 0.00100 s. What is the speed of the ball afterwards
aksik [14]

Answer:

51.85m/s

Explanation:

Given parameters:

Mass of ball  = 0.0459kg

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Time taken  = 0.001s

Unknown:

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Solution:

To solve this problem, we use Newton's second law of motion:

   F = m x \frac{v - u}{t}  

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m is the mass

v is the final velocity

u is the initial velocity

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        2380  = 0.0459 x \frac{v- 0}{0.001}  

        0.0459v  = 2.38

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8 0
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Oksanka [162]
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Every single thing in the world falls at the same acceleration, this is because of gravity. The difference is the speed of which it falls. In space, there is not any gravity, and so, the objects are able to fall at the same speed regardless of their mass.
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