Neco 2024 Physics Question 28
Practice objective / multiple choice question 28 from the 2024 Neco Physics examination.
A 0.100 kg sample of a metal alloy has a specific heat capacity that varies linearly with temperature according to \( c(T) = a + bT \) (J·kg\( ^{-1}\)·°C\( ^{-1} \)). When 12.0 kJ of heat is supplied, its temperature rises from \( 20^{\circ}\text{C} \) to \( 30^{\circ}\text{C} \). A further 13.5 kJ raises the temperature from \( 30^{\circ}\text{C} \) to \( 40^{\circ}\text{C} \).\n\nDetermine the values of \( a \) and \( b \), and then calculate the specific heat capacity of the alloy at \( 35^{\circ}\text{C} \). Give your final answer for \( c(35^{\circ}\text{C}) \) in kJ·kg\( ^{-1}\)·°C\( ^{-1} \) to three significant figures.
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About This Question
This is Neco 2024 Physics Question 28. It is one of the objective questions from the 2024 Neco Physics examination.
Difficulty level: Medium .
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