Question detail
A 2 kg block of metal is heated, causing its temperature to increase by 25 °C. Calculate the change in thermal energy if the specific heat capacity of the metal is 500 J/kg°C.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Energy changes in a system, and the ways energy is stored before and after such changes
Question
A 2 kg block of metal is heated, causing its temperature to increase by 25 °C. Calculate the change in thermal energy if the specific heat capacity of the metal is 500 J/kg°C.
Answer
The change in thermal energy is 25000 J.
Explanation
This question tests the ability to apply the specific heat capacity formula to calculate thermal energy changes. The answer is strong as it demonstrates understanding of the relationship between mass, specific heat capacity, and temperature change. This answer is linked to Energy stores and systems because it applies the learning objective: Calculate changes in energy when a system is changed by heating.. It shows the Physics relationship clearly and keeps energy, power, work done and efficiency terms distinct where they appear.
Common mistake
Common Mistake in Energy Calculation
Students often forget to convert units when calculating changes in energy, leading to incorrect answers.
Always check that mass is in kilograms and energy is in joules before performing calculations.
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