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)

Assessment: WAEC SSCE - Physics - 2011 (Objective) Subject: Physics

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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)
Answer Details
The equation that relates mass and energy is E=mc2. Here, the change in mass is given as 2.0 x 10-27 kg. The speed of light is given as 2.0 x 108 ms-1. Substituting these values in the equation, we get: E = (2.0 x 10-27 kg) x (2.0 x 108 ms-1)2 E = 1.8 x 10-10 J Therefore, the amount of energy released is 1.8 x 10-10 J.
Read lesson note on Structure Of The Atom (Nigeria Only) (WAEC)
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