Physics · May / June 2023 · Paper 61 · Question 2
0625
As printed in the paper
The question as text
A student investigates the cooling of water under different conditions. Fig. 2.1 shows the set-up. bench thermometer beaker Fig. 2.1
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2(a)[1]
21 (°C)
2(b)(i)[1]
s, °C
2(b)(ii)[1]
0, 30, 60, 90, 120, 150, 180
2(c)(i)[1]
Δθ = 25
2(c)(ii)[2]
R = 0.14 or 0.139 to 2 or 3 significant figures ONLY
unit °C / s
2(d)(i)[1]
continue taking temperatures / continue for a longer time (until close to room temperature)
OR use lower / higher starting temperature (of water)
2(d)(ii)[2]
plot a graph
of temperature against time OR cooling rate against time / temperature
2(e)[1]
to avoid parallax error owtte
2(f)[1]
read at bottom of meniscus OR ensure measuring cylinder is on horizontal surface
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