Quick questions on Specific heat capacity and latent heat (QCE Physics Unit 1)

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

Show answer

State the specific heat capacity equation and the specific latent heat equation, defining each symbol. [2 marks]

What is q2?

Show answer

Calculate the energy needed to heat

0.50 \text{ kg}

of water from

20^\circ \text{C}

100^\circ \text{C}

(

c = 4186 \text{ J kg}^{-1} \text{ K}^{-1}

) and then boil it all to steam (

L_v = 2.26 \times 10^6 \text{ J kg}^{-1}

). [3 marks]

What is q3?

Show answer

A Bundaberg mill needs to raise

2000 \text{ kg}

of juice (

c = 3850 \text{ J kg}^{-1} \text{ K}^{-1}

) from

30^\circ \text{C}

95^\circ \text{C}

. (a) Calculate the heat required. (b) The boiler delivers

750 \text{ kW}

Have a question we have not covered?

This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.

All PhysicsQ&A pages