10. The graph below shows temperature vs time for water in a tank after the heater has been switched on. The heater is switched off at point A on the graph. Specific heat capacity of water is 4800JK 9¬1°C-1. Mass of water in the tank is 20Kg. Temperature versus Time Graph 8아 60 40 20 20 30 40 50 60 70 80 10 Time (minutes) i. What is the amount of heat Energy supplied by the heating coil in the first 30 minutes? Energy ii. What would be the power of the heater assuming there is no loss of heat? P = Atime Temperature °C
10. The graph below shows temperature vs time for water in a tank after the heater has been switched on. The heater is switched off at point A on the graph. Specific heat capacity of water is 4800JK 9¬1°C-1. Mass of water in the tank is 20Kg. Temperature versus Time Graph 8아 60 40 20 20 30 40 50 60 70 80 10 Time (minutes) i. What is the amount of heat Energy supplied by the heating coil in the first 30 minutes? Energy ii. What would be the power of the heater assuming there is no loss of heat? P = Atime Temperature °C
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Transcribed Image Text:10. The graph below shows temperature vs time for water in a tank after the heater has been
switched on. The heater is switched off at point A on the graph. Specific heat capacity of water is
4800JK g-1°C-1. Mass of water in the tank is 20Kg.
Temperature versus Time Graph
8아
60
40
20
10
20
30
40
50
60
70
80
Time (minutes)
i.
What is the amount of heat Energy supplied by the heating coil in the first 30 minutes?
Energy
ii.
What would be the power of the heater assuming there is no loss of heat? P =
Atime
Temperature °C
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