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An iron rod of mass 2kg and at a temperature of 280oC is dropped into...

Physics
WAEC 1995
An iron rod of mass 2kg and at a temperature of 280oC is dropped into some quantity of water initially at a temperature of 30oC. lf the temperature of the mixture is 70oC, calculate the mass of the water. (Neglect heat losses to the surroundings). Specific heat capacity of iron = 460 J kgK) (Specific heat capacity of water = 4200 Jkg K)
  • A. 0.58kg
  • B. 0.77kg
  • C. 1.15kg
  • D. 1.50kg
  • E. 2.04kg
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Correct Answer: Option C
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