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The change in mass of fuel during a nuclear reaction is 2.0 x 10-27 kg....

Physics
WAEC 2011
The change in mass of fuel during a nuclear reaction is 2.0 x 10-27 kg. Calculate the amount of energy released. (Speed of light = 2.0 x 108ms-1)
  • A. 1.8 x 10-10J
  • B. 9.0 x 10-11J
  • C. 6.0 x 10-19J
  • D. 1.2 x 10-45J
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Correct Answer: Option A
Explanation
Q = \(\Delta MC^2\)

= 2 x 10-27(3 x 10)2

= 1.8 x 10-10J
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