Physics · Oct / Nov 2021 · Paper 62 · Question 1
0625
As printed in the paper
The question as text
A student determines the density of a block of wood.
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1(a)(i)[1]
l = 5.1 (cm) and w = 4.7 (cm)
1(a)(ii)[1]
V = 95.88 (cm3)
1(a)(iii)[1]
64 (g)
1(a)(iv)[2]
ρ to 2 or 3 significant figures
unit g / cm3
1(b)(i)[1]
estimate of V1 given to the nearest cm3 and > ½V < V
1(b)(ii)[1]
mW numerically equal to V1
1(c)(i)[1]
d = candidate’s (a)(iii) − (b)(ii) correct
1(c)(ii)[1]
YES/NO and suitable comparison of d with m or mW
1(d)[2]
(float wood and) mark water level / remove and mark the water level
measure submerged depth and multiply by the cross-sectional area
OR
measure height of block that is not submerged
multiply by the cross-sectional area then subtract from total volume of block.
OR
use of a measuring cylinder / displacement can
measure the volume of water displaced (by the floating block)
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