If the ratio of the rest mass to the relativistic mass of an electron is 0.8,then the velocity of the electron must be
A)0.2c
B)0.4c
C)0.6c
D)0.8c
E)c

Name: If the ratio of the rest mass to the relativistic mass of an electron is 0.8,then the velocity of the electron must be A)0.2c B)0.4c C)0.6c D)0.8c E)c
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Quizplus · Accepted Answer

The relativistic mass is given by m = m₀/√(1-v²/c²), where m₀ is the rest mass. If the ratio m₀/m = 0.8, then √(1-v²/c²) = 0.8. Solving for v, we find v = 0.6c.

If the Ratio of the Rest Mass to the Relativistic