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Oliga [24]
3 years ago
5

1. Which of the following is a direct cause of a substance’s temperature increase? (1 point). Energy is removed from the particl

es of the substance.. Kinetic energy is added to the particles of the substance.. The number of atoms and molecules in a substance changes.. The volume of the substance decreases.. 2. As the temperature of a substance increases, its volume tends to increase due to (1 point). . thermal equilibrium.. thermal energy.. thermal expansion.. thermal contraction..
Physics
2 answers:
Alexeev081 [22]3 years ago
8 0

Answer:

1. option b

2. option c

Explanation:

1. When temperature of a substance is increased, it is actually caused by the increase in the kinetic energy of the particles of the substance. The particles vibrate more rigorously. Average kinetic energy of a gas is proportional to temperature:

K.E. =0.5 kT²

thus, option b is correct.

2. As the temperature increases, the substance undergoes thermal expansion. Thus, the volume increases.

Option c is correct

Arlecino [84]3 years ago
3 0
If I read this right then its the adding of kinetic energy to the substance. Friction=Heat
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Answer:

(a) 12 × 10⁻³ C = 12 mC (b) The lower plate

Explanation:

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The force on the oil drop due to the electric field between the plates is given by F = qE = qQ/ε₀πr².

Since the oil drop is suspended between the plates, it means that the electric force due to the field on the oil drop balances the weight of the oil drop. So, since weight of oil drop W = mg where g = 9.8 m/s². F =W (for oil drop suspension).

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So, Q=mgε₀πr²/q

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<h3>What is a magnetic field?</h3>

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