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erastovalidia [21]
3 years ago
12

Thermal energy is added to four identical samples of water what increases in each sample

Physics
2 answers:
Setler [38]3 years ago
8 0
Thermal energy is added to four identical<span> 1.0 kg </span>samples of water<span> at room temperature. Which of the following </span>increases in each sample<span>? average charge of an electron; average density of </span>a<span> nucleus; average mass of </span>a<span> proton; average speed of </span>a<span> molecule. Your answer: -. Answer: D - average speed of </span>a<span>molecule.</span>
belka [17]3 years ago
8 0

Answer:

Average speed of a molecule

Explanation:

If thermal energy (heat) is added to a substance or sample, according to the first law of thermodynamics this will cause the internal energy in that sample to increase.

The increase in internal energy will be manifested in that the speed of the  molecules that make up the substance will increase, and therefore the average speed  of a molecule increases.

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A glass rod is rubbed briefly with silk and the rod becomes able to attract and lift a number of small pieces of paper. If the r
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it will have a stronger attraction force

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Two ropes are attached to a 40-kg object. The first rope applies a force of 25 N and the second, 40 N. If the two ropes are perp
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Answer:

1.2 m/s^2

Explanation:

I will ignore gravity and friction....and will choose 25 N as UP and 40 N to Left (see diagram)

Resultant force:   R^2 = 25^2 + 40^2        R = sqrt(2225)=47 N

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Whic of the following properties belongs to sound waves sound weves​
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3 years ago
The rotational inertia of a collapsing spinning star changes to 1/6 its initial value. What is the ratio of the new rotational k
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Explanation:

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initial rotational kinetic energy = 1/2 I x ω₁ ²

Final  rotational kinetic energy = 1/2 ( I / 6 ) x ω₂ ²

Final  rotational kinetic energy / initial rotational kinetic energy

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= 36 ω₁ ² / 6ω₁ ²

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