PHYSICS
JAMB 2018 - Question 12
Physics 2018 JAMB Past Questions - Question 12: The amount of heat needed to raise the temperature of 10kg of copper by 1K is its
Choose the correct answers from the options given.
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Correct Answer
A
Explanation
The amount of heat needed to raise the temperature of a substance by 1 Kelvin is called its specific heat capacity. For copper, the specific heat capacity is approximately 0.39 J/g·K. To calculate the amount of heat needed to raise the temperature of 10 kg of copper by 1 K, we can use the formula:
Heat = mass × specific heat capacity × temperature change
In this case, the mass is 10 kg, the specific heat capacity is 0.39 J/g·K, and the temperature change is 1 K. Converting the mass to grams, we have:
Heat = 10,000 g × 0.39 J/g·K × 1 K
Heat = 3,900 J
Therefore, the amount of heat needed to raise the temperature of 10 kg of copper by 1 K is 3,900 Joules.