2 years ago

Will UPVOTE ALL answers!

2 answers:

5 0

The best and most correct answer among the choices provided by the question is the second choice. The temperature of the substance is directly proportional to the average kinetic energy of the molecules. I hope my answer has come to your help. God bless and have a nice day ahead!

JulijaS [17]2 years ago

3 0

For e 2020, it is the second one

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A box sliding on a horizontal frictionless surface runs into a fixed spring, compressing it a distance x1 from its relaxed posit

inn [45]

Answer:twice of initial value

Explanation:

Given

spring compresses $x_1$ distance for some initial speed

Suppose v is the initial speed and k be the spring constant

Applying conservation of energy

kinetic energy converted into spring Elastic potential energy

$\dfrac{1}{2}mv^2=\dfrac{1}{2}kx_1^2----1$

When speed doubles

$\dfrac{1}{2}m(2v)^2=\dfrac{1}{2}kx_2^2----2$

divide 1 and 2

$\dfrac{1}{4}=\dfrac{x_1^2}{x_2^2}$

$x_2=2x_1$

Therefore spring compresses twice the initial value

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2 years ago

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Margarita [4]

Answer:

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2 years ago

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RSB [31]

Answer:

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3 0

2 years ago

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sladkih [1.3K]

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3 years ago

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creativ13 [48]

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So
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