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patriot [66]
3 years ago
9

Which statement best describes the relationship between temperature and thermal energy?

Physics
2 answers:
choli [55]3 years ago
7 0
 <span>When temperature increases, particles in an object speed up, which means an increase in thermal energy. Since the particles are moving more now, the potential energy decreases, therefore kinetic energy increases. 

Overall, when temp goes up, thermal energy goes up, which leads to an increase in kinetic energy.</span>
Aleks [24]3 years ago
7 0
When temperature will increase, particles in an object speed up, which implies a rise in thermal energy. Since the particles ar<span>moving </span>additional now, the potential energy decreases, so kinetic energy will increase. 

Overall, once worker goes up, thermal energy goes up, that ends up in a rise in <span>kinetic energy

Explanation:

</span>
Often we expect<span> that heat and temperature </span>are a constant issue<span>. However, </span>this can be<span> not the case. Heat and temperature </span>are associated with one another<span>, </span>however, are totally different ideas<span>.

Heat </span>is that the<span> total energy of molecular motion </span>during a substance<span> </span>whereas<span> temperature </span>may be a live<span> of </span>the common<span> energy of molecular motion </span>during a<span> substance</span>

<span>When </span>heat<span> is transferred from one substance </span>to a different<span>, </span>the warmth<span> energy moves from </span>the warmer<span> substance to the colder substance.

The temperature </span>may be a measure<span> of </span>however<span> hot or cold a substance is. </span>the upper<span> the temperature of </span>an<span> object, </span>the warmer is that the<span> object</span>
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A thin uniform rod of mass M and length L is bent at its center so that the two segments are now perpendicular to each other. Fi
Tatiana [17]

Answer:

(a) I_A=1/12ML²

(b) I_B=1/3ML²

Explanation:

We know that the moment of inertia of a rod of mass M and lenght L about its center is 1/12ML².

(a) If the rod is bent exactly at its center, the distance from every point of the rod to the axis doesn't change. Since the moment of inertia depends on the distance of every mass to this axis, the moment of inertia remains the same. In other words, I_A=1/12ML².

(b) The two ends and the point where the two segments meet form an isorrectangle triangle. So the distance between the ends d can be calculated using the Pythagorean Theorem:

d=\sqrt{(\frac{1}{2}L) ^{2}+(\frac{1}{2}L) ^{2} } =\sqrt{\frac{1}{2}L^{2} } =\frac{1}{\sqrt{2} } L=\frac{\sqrt{2} }{2} L

Next, the point where the two segments meet, the midpoint of the line connecting the two ends of the rod, and an end of the rod form another rectangle triangle, so we can calculate the distance between the two axis x using Pythagorean Theorem again:

x=\sqrt{(\frac{1}{2}L)^{2}-(\frac{\sqrt{2}}{4}L)  ^{2} } =\sqrt{\frac{1}{8} L^{2} } =\frac{1}{2\sqrt{2}} L=\frac{\sqrt{2}}{4} L

Finally, using the Parallel Axis Theorem, we calculate I_B:

I_B=I_A+Mx^{2} \\\\I_B=\frac{1}{12} ML^{2} +\frac{1}{4}  ML^{2} =\frac{1}{3} ML^{2}

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3 years ago
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