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DerKrebs [107]
2 years ago
15

A cube-shaped piece of copper has sides of 4cm each and it's density is

Physics
1 answer:
iris [78.8K]2 years ago
5 0

Answer:

64 cm^3

Explanation:

<u>Density </u>

The density of a substance is the mass per unit volume. The density varies with temperature and pressure.

The formula to calculate the density of a substance of mass (m) and volume (V) is:

\displaystyle \rho=\frac{m}{V}

We have a cube-shaped piece of copper of 4 cm of side length. The volume of the piece is:

V=(4\ cm)^3=64\ cm^3

Surprisingly, no other magnitude is required, thus the answer is:

\mathbf{64 cm^3}

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Correct Answer:

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Calculation:

We know that the work done to transport an electron from the positive to the negative terminal is given as:

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Therefore, the work done in bringing the charge from the positive terminal to the negative terminal is 1.92 × 10⁻¹⁹ J.

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