Mass vaporised from latent heat
A electric bike circuit check supplies \(51000\,\text{J}\) to boiling water. Use \(L_v=2.26\times10^{6}\,\text{J kg}^{-1}\). Calculate the mass vaporised. Enter the numerical result and choose the interpretation that matches the physics meaning.
Worked practice: physics data and result
Read the physical quantities first, then calculate the result and state what it means.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.