Question
A student uses a 2400 W electric kettle to obtain a value for the specific heat capacity of sunflower oil. The student uses a measuring
A student uses a 2400 W electric kettle to obtain a value for the specific heat capacity of sunflower oil.
The student uses a measuring jug and pours 1.50kg of sunflower oil into the empty kettle. He uses a thermometer to measure the temperature of the oil.
The kettle is switched on and left on for 50 s. The temperature of oil increases by 32C.
The student assumes that all the electrical energy is transferred to the oil.
(a) Calculate the energy supplied by the kettle for 50 s.
2400*50 = 120kJ
(b) Calculate the heat capacity of sunflower oil.
(c) Calculate the specific capacity of sunflower oil.
How to calculate parts b and c?
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Physics by Example
Authors: W. G. Rees
1st edition
521449758, 521445140, 9780521449755, 978-0521445146
