DP Physics (last assessment 2024)
Question 17N.3.SL.TZ0.1b.i
| Date | November 2017 | Marks available | [Maximum mark: 3] | Reference code | 17N.3.SL.TZ0.1b.i |
| Level | SL | Paper | 3 | Time zone | TZ0 |
| Command term | Determine | Question number | b.i | Adapted from | N/A |
b.i.
[Maximum mark: 3]
17N.3.SL.TZ0.1b.i
In an experiment, data were collected on the variation of specific heat capacity of water with temperature. The graph of the plotted data is shown.
(b.i)
Determine the gradient of the line at a temperature of 80 °C.
[3]
Markscheme
tangent drawn at 80 °C
gradient values separated by minimum of 20 °C
9.0 × 10–4 «kJ kg–1 K–2»
Do not accept tangent unless “ruler” straight.
Tangent line must be touching the curve drawn for MP1 to be awarded.
Accept values between 7.0 × 10–4 and 10 × 10–4.
Accept working in J, giving 0.7 to 1.0
