The graph below shows time versus temperature for water in a tank after the heater has been switched on. The heater is switched off at point A on the graph.
a. The mass of water in the tank is 60 kg. What is the amount of heat supplied by the heating coil in the first
30 minutes?
b. If the mass was 50 kg, what would be the power of the heater assuming there is no loss of heat?
c. What is the rate at which the temperature of the water in the tank increases over the first 30 minutes?
Answers: 2
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The graph below shows time versus temperature for water in a tank after the heater has been switched...
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