DP Physics (last assessment 2024)
Question 19M.3.SL.TZ2.bii
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.SL.TZ2.bii |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | Calculate | Question number | bii | Adapted from | N/A |
bii.
[Maximum mark: 1]
19M.3.SL.TZ2.bii
A heat pump is modelled by the cycle A→B→C→A.
The heat pump transfers thermal energy to the interior of a building during processes C→A and A→B and absorbs thermal energy from the environment during process B→C. The working substance is an ideal gas.
Calculate the temperature at A if the temperature at B is −40°C.
[1]
Markscheme
TA = 816«K» OR 543«°C»✔
Examiners report
The temperature at A was found correctly by most candidates.
