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Physics 2011 WAEC Past Questions

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46
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
View Answer & Discuss (6) WAEC 2011
47
Nuclear fusion is not used as a source of enegy because
  • A. very high temperature is needed for the reaction
  • B. the fuel for the reaction is not easy to obtain
  • C. less energy is released
  • D. the reaction is too slow
View Answer & Discuss WAEC 2011
48
Using the circuit diagram above. Calculate the total charge in the circuit
  • A. 80\(\mu C\)
  • B. 35\(\mu C\)
  • C. 20\(\mu C\)
  • D. 16\(\mu C\)
View Answer & Discuss WAEC 2011
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49
Using the circuit diagram above. Calculate the potential difference across the capacitors in parallel
  • A. 10.0V
  • B. 8.0V
  • C. 6.7V
  • D. 2.0V
View Answer & Discuss (7) WAEC 2011
50

A stone projected horizontally from the top of a tower with a speed of 4 ms\(^{-1}\) lands on the level ground at a horizontal distance of 25 m from the foot of the tower. Calculate the height of the tower. = 10 ms\(^{-2}\)]

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