DP Physics (last assessment 2024)
Question 18M.3.SL.TZ1.7b.iii
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.SL.TZ1.7b.iii |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | Calculate | Question number | b.iii | Adapted from | N/A |
b.iii.
[Maximum mark: 1]
18M.3.SL.TZ1.7b.iii
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.
(b.iii)
For the process BC, calculate, in J, the thermal energy transferred to the gas.
[1]
Markscheme
Q «= (1.5 + 2.28) × 103 =» 3.80 × 103 «J»
Watch for ECF from (b)(i) and (b)(ii).
[1 mark]
