A titanium alloy component of mass 0.75 kg is quenched in an industrial oil bath to harden it. Its initial temperature is 430 ∘C430\text{ }^\circ\text{C}430 ∘C, and it cools to 80 ∘C80\text{ }^\circ\text{C}80 ∘C over a time period of 3.5 minutes3.5\text{ minutes}3.5 minutes.
The specific heat capacity of the titanium alloy is 520 J kg-1 K-1.
What is the average thermal power transferred from the component to the oil bath during this process?
150 W150\text{ W}150 W
650 W650\text{ W}650 W
950 W950\text{ W}950 W
39 kW39\text{ kW}39 kW
56 exam-style questions on OCR A A Level Physics Thermal physics, covering Temperature, Solid, liquid and gas, Thermal properties of materials, and Ideal gases. Each one has a worked solution and a mark scheme showing where the marks go.