Question detail
In a specific heat capacity investigation, if 500 J of energy is supplied to a 0.5 kg sample of water and the temperature increases from 20°C to 30°C, what is the specific heat capacity of the water?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
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exam_style
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Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
In a specific heat capacity investigation, if 500 J of energy is supplied to a 0.5 kg sample of water and the temperature increases from 20°C to 30°C, what is the specific heat capacity of the water?
Answer
The specific heat capacity of the water is 1000 J/kg°C.
Explanation
This question tests the ability to apply the specific heat capacity formula. The specific heat capacity is calculated by rearranging the equation to find c = change in thermal energy / (mass x temperature change). Here, c = 500 J / (0.5 kg x 10°C) = 1000 J/kg°C. This answer is linked to Energy changes in systems because it applies the learning objective: Interpret data from a specific heat capacity investigation, including temperature change and energy supplied.. It shows the Physics relationship clearly and keeps energy, power, work done and efficiency terms distinct where they appear.
Common mistake
Misunderstanding Temperature Change
Students often confuse the temperature change with the total energy supplied during a specific heat capacity investigation.
Emphasize that temperature change is the difference between the initial and final temperatures, and it is essential to relate this to the energy supplied using the specific heat capacity equation.
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