20. A student carries out an experiment to determine the specific heat capacity c of a solid. The relationship used to calculate cis
E
CE
maT
The recorded measurements and their percentage uncertainties are shown.
energy supplied, E = 5000 J + 1%
mass of solid, m=0-20 kg + 2%
change in temperature, AT = 4-5 °C -5%
A good estimate of the percentage uncertainty in the calculated value of cis
A 8%
B 7%
5%
C
D3%
E1%.