Physics · Oct / Nov 2019 · Paper 21 · Question 5

An electronic balance is calibrated to display the weight of an object that is placed on its top plate. Fig. 5.1 shows the balance with an empty measuring cylinder on the top plate. 90 100 cm3 0 10 20 30 40 50 60 70 80 1.203 N measuring cylinder balance top plate Fig. 5.1 A student pours a small quantity of oil into the measuring cylinder and records the volume and the new reading on the balance. Fig. 5.2 shows how the reading on the balance varies with the volume of oil in the measuring cylinder. 2.4 2.0 1.6 1.2 0.8 0.4 00 20 40 60 volume / cm3 weight / N 80 100 Fig. 5.2 7 The gravitational field strength g is equal to 10 N / kg. Using Fig. 5.2, determine the density of the oil. density = [4]

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