DP Physics (last assessment 2024)
Question 18M.3.SL.TZ1.b.i
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.SL.TZ1.b.i |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | Calculate | Question number | b.i | Adapted from | N/A |
b.i.
[Maximum mark: 1]
18M.3.SL.TZ1.b.i
The pressure–volume (pV) diagram shows a cycle ABCA of a heat engine. The working substance of the engine is 0.221 mol of ideal monatomic gas.
At A the temperature of the gas is 295 K and the pressure of the gas is 1.10 × 105 Pa. The process from A to B is adiabatic.
For the process BC, calculate, in J, the work done by the gas.
[1]
Markscheme
«W = pΔV»
«= 5.07 × 105 × (5 × 10–3 – 2 × 10–3)»
= 1.52 × 103 «J»
Award [0] if POT mistake.
[1 mark]
