Thermal physics 1 a) A 50.0 g sample of copper is at 25 °C. If 1200 J of energy is added to the copper by heat, what is

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Thermal Physics 1 A A 50 0 G Sample Of Copper Is At 25 C If 1200 J Of Energy Is Added To The Copper By Heat What Is 1 (21.58 KiB) Viewed 12 times

Thermal physics 1 a) A 50.0 g sample of copper is at 25 °C. If 1200 J of energy is added to the copper by heat, what is its final temperature? Specific heat capacity for copper, ccu = 387 J kg-¹ K-¹ (2 marks) b) An aluminium rod is 20.0 cm long at 20 °C and has a mass of 350 g. If 10 000 J of energy is added to the rod by heat, what is the change in length of the rod? Specific heat capacity for aluminium, c = 900 J kg-¹ K-1, and coefficient of linear expansion for aluminium, a = 24 x 10-6 K-1. (3 marks) c) A 0.40 kg iron horseshoe that is initially at 500 °C is dropped into a bucket containing 20 kg of water at 22 °C. What is the final equilibrium temperature? Neglect any energy transfer to or from the surroundings. Specific heat capacity for iron, CFe = 448 J kg-¹ K-1, specific heat for water, cw = 4186 J kg-¹ K-1. (3 marks)