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VladimirAG [237]
3 years ago
6

Energy is transferred in solids by conduction, which means that?

Physics
2 answers:
Elza [17]3 years ago
6 0

Answer:

The answer is C

Explanation:

Conduction is the transfer of energy (in this case heat) from one substance to another substance through direct contact. This definition rules out the option D which suggests that heat does not travel between objects of different temperatures.

It is also impossible for heat to be transferred from a cooler object to a hotter object (as claimed in option B) because the atoms in hotter objects are more energized than cooler objects and are hence able to pass there energy to the cooler object whose atoms in less energized or in a relaxed state if cold. This reason also rules out option A because the hotter object contains more energized particles and hence energy (heat) cannot be passed from the cooler object nor can the heat travel in both directions.

From the explanation in the previous paragraphs, it is clear that energy transfer in solids occurs when heat travels from the hotter object to the cooler object via conduction.

Ivahew [28]3 years ago
5 0
The answer is C, also knows as balancing energy, the energy will eventually be the same.
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The box resting on the inclined plane above has a mass of 20kg. The incline sits at a 30o angle. Find the friction force between
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The friction force between the box and the incline if the box does not slide down the incline will be 0.577

The force preventing sliding against one another of solid surfaces, fluid layers, and material components is known as friction. There are several kinds of friction: Two solid surfaces in touch are opposed to one another's relative lateral motion by dry friction.

Given the box resting on the inclined plane above has a mass of 20kg and the The incline sits at a 30 degree angle

We have to find the friction force between the box and the incline if the box does not slide down the incline

Since the frictional force F₁ must equal or exceed gravitational force F₂ down the incline:

F₁ = F₂

μmgcosΘ = mgsinΘ

μ = (mgsinΘ)/(mgcosΘ)

μ = tanΘ

μ = 0.577

Hence the friction force between the box and the incline if the box does not slide down the incline will be 0.577

Learn more about friction force here:

brainly.com/question/24386803

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