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stiks02 [169]
3 years ago
10

When a metal is heated, the free electrons gain _____________.

Physics
1 answer:
evablogger [386]3 years ago
5 0
<h2>Answer: C. Kinetic energy</h2>

Explanation:

Heat is energy in transit, in fact it is a transfer of thermal energy from one body to another.  

So, when a metal is heated is because we have two bodies with different temperatures and thermal energy is transferred from one body to another, implying a high speed and kinetic energy in the particles involved (electrons in this case).

This is because the kinetic energy of a particle is that energy it possesses due to its movement, and according to the first principle of thermodynamics, there is a relationship between heat and movement, since the metal is composed of particles that are in motion (to a certain extent).

In this way, with the increase of the temperature of the metal, there is an increase of the kinetic energy of its free electrons with a gain of velocity (movement), therefore a gain in kinetic energy.

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BlackZzzverrR [31]
The gravitation acceleration on the moon is different than on Earth. It is 1.6 m/s^2. If you weigh 120 lbs, then you would multiply 120 pounds by the gravitational acceleration on the moon and then divide by the acceleration on Earth.

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4 0
2 years ago
What is the mechanical advantage of a nail puller where you exert a force 45 cm from the pivot and the nail is 1.8 cm on the oth
Mandarinka [93]

Answer:

Explanation:

Mechanical Advantage is the ratio of the distance of the input load (Li)from the pivot to the output load applied to the pivot(Lo)

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Given;

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MA = 45/1.8

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Hence the mechanical advantage is 25

Also MA is expressed in terms of the force ratio which is the ratio of the Load to the effort applied.

MA = Load/Effort

Given

Load = 1250N

MA = 25

Effort = ?

Substitute

25 = 1250/Effort

Effort = 1250/25

Effort = 50N

Hence the minimum force exerted on the load is 50N

3 0
2 years ago
What is one benefit of lifelong physical activity?
kvasek [131]
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5 0
3 years ago
What is 18 m/s north an example of?
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Answer:

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8 0
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What factors that affect magnetic force
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Answer:

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3 years ago
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