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3 years ago

Uece 2015) Considere uma garrafa de refrigerante posta verticalmente sobre uma mesa horizontal.

Physics

1 answer:

Mekhanik [1.2K]3 years ago

3 0

Answer: b) Pressure and internal energy increases.

Explanation: According to the temperature and pressure law, also known as Gay-Lussac's Law, pressure and temperature are directly proportional, which means that when temperature increases so does pressure and vice-versa, so, since temperature increased, pressure will also increase.

Internal Energy (Thermal Energy) is the total amount of energy associated with the motion of the atoms or molecules in the system. Temperature and Internal Energy are also directly proportional, because, as temperature increases, the movement of the particles increases and so do its internal energy. So, as temperature rises internal energy also rises.

For this bottle, as temperature rises, both pressure and internal energy also rises, so the right alternative is "Pressure and internal energy increases."

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Answer:

The ratio of the diameter of iron to Cu is;

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Explanation:

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from the question the two materials have the same resistance per unit length.

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re-arranging the equation we have,

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$\frac{A_{Fe}}{A_{Cu} } =\frac{d^{2}{Fe} }{ d^{2}{Cu} }$

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$\frac{d{Fe} }{ d{Cu} } =\sqrt{\frac{p_{Fe} }{ p_{Cu} }}$

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