Fundamental Forces: Inside the nucleus, the strongest of the four fundamental forces is
A. the weak nuclear force.
B. the electromagnetic force.
C. the gravitational force.
D. the strong nuclear force.
Answer: D
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A proton's rest mass is 1.67 × 10?27 kg. Calculate its kinetic energy when it is accelerated to a speed of 0.80c.
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All Cepheids are giants, but not all giant stars are Cepheid variables
Indicate whether the statement is true or false