Set 9: Linear Equations (Advanced)

Explanation

Answer: C

Solve for $m$ : $E = mc^2$

m = E - c^2

m = c^2 / E

m = E / c^2

✓ Correct

m = Ec^2

Detailed Explanation

Choice C is correct. Choice A is the correct answer. 1. Start: $E = mc^2$ 2. Divide by $c^2$ : $m = \frac{E}{c^2}$ Choice D is incorrect because subtracted. Choice C is incorrect because inverted. Choice B is incorrect because multiplied.

Key Steps:

•

The correct answer is m = E / c^2

Why others are wrong:

A: Choice A is incorrect and may result from a calculation error.

B: Choice B is incorrect and may result from a calculation error.

D: Choice D is incorrect and may result from a calculation error.

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