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→Calculating Thermal Energy
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| style="height:20px; width:200px; text-align:center;" |A 2 kg [[object]] made from a [[material]] with [[Specific Heat Capacity|specific heat capacity]] 5 J/kg/°C is [[heated ]] by 10°C. Calculate the '''Thermal Energy''' transferred to the [[object]].
| style="height:20px; width:200px; text-align:center;" |A sealed metal can containing 5.5 kg of [[water]] is heated over a fire from 27°C to 100°C to sterilise the [[water]]. Calculate the increase in '''thermal energy''' of the [[water]].
(Give your answer correct to 2 [[Significant Figures|significant figures]].)
| style="height:20px; width:200px; text-align:center;" |QA 0.5kg [[Iron]] baking tray is [[heated]] from 20°C to 80°C in an oven. Calculate the work done by the oven in [[heating]] the tray. The [[Specific Heat Capacity]] of [[Iron]] is 450 J/kg/°C. (Give your answer correct to 2 [[Significant Figures|significant figures]].)
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| style="height:20px; width:200px; text-align:left;" |'''State the known quantities'''
Δθ = θ<sub>2</sub> - θ<sub>1</sub> = 100 - 27 = 73°C
| style="height:20px; width:200px; text-align:left;" |Step n'''State the known quantities''' m = 0.5 kg c = 450 J/kg/°C θ<sub>1</sub> = 20°C θ<sub>2</sub> = 80°C '''Find the [[temperature]] change.''' Δθ = θ<sub>2</sub> - θ<sub>1</sub> = 80 - 20 = 60°C
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| style="height:20px; width:200px; text-align:left;" |'''[[Substitute (Maths)|Substitute]] the numbers into the [[equation]].'''
<math>E_t = 1686300</math>
<math>E_t \approx 17000001700000J</math>| style="height:20px; width:200px; text-align:left;" |Step n'''[[Substitute (Maths)|Substitute]] the numbers into the [[equation]].''' <math>E_t = m c \Delta \theta</math> <math>E_t = 0.5 /times 450 /times 60</math> <math>E_t = 13500</math> <math>E_t \approx 14000J</math>
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