Multiple Choice
A particle is moving with a certain speed. Its speed and energy are being measured with respect to Earth. When the particle's speed doubles, the energy increases by a factor of 4. What was the original speed of the particle?
A) 0.447c
B) 0.488c
C) 0.523c
D) 0.648c
E) 0.800c
Correct Answer:

Verified
Correct Answer:
Verified
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