IB Physics · B.1 · structured
Vaporization time 6
The particulate nature of matter · Thermal energy transfers · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- routine
- Marks
- 4
- Topics
- 2
- Answer
- Complete
Question4 marks
A heater of power 940 W transfers 82% of its energy to 0.24 kg of water already at its boiling point. Use Lv = 2.26 × 106 J kg⁻¹. Find the time to vaporize the water.
Task interpretation
What a complete response should do
Build a visible chain from the information given to the quantity or statement requested.
Name the standard relationship first, keep units attached, and show the substitution before the result.
- Response type
- structured
- Allocation
- 4 marks
- Demand
- routine
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