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iogann1982 [59]
3 years ago
15

Which is an si metric unit of measurement that is used to record the heat transfer of a solution in a classroom investigation?

Physics
1 answer:
kumpel [21]3 years ago
4 0
The SI unit for heat energy is joule
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1. A force acting on an object in the upward direction is 3 N. The force that would
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Answer:

See the explanation below

Explanation:

We must perform a sum of forces on the body, that sum of forces is equal to zero. That is, the body is in balance and does not move.

ΣF = 0

3 - 3 = 0

This force is negative and acts by pointing downwards.

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Which has a greater force: a semi-truck at rest or a moving bicycle?
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A spring with a rest length of 0.7 m has a spring constant of 70 N/m. It is stretched and now has a length of 2.5 m. What is the
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Answer:

<em>113.4 J</em>

Explanation:

<u>Elastic Potential Energy</u>

Is the energy stored in an elastic material like a spring of constant k, in which case the energy is proportional to the square of the change of length Δx and the constant k.

\displaystyle PE = \frac{1}{2}k(\Delta x)^2

The spring has a natural length of 0.7 m and a spring constant of k=70 N/m. When the spring is stretched to a length of 2.5 m, the change of length is

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The energy stored in the spring is:

\displaystyle PE = \frac{1}{2}70(1.8)^2

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Answer:

rate of change

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