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QUESTION B1 (15 Marks)

(a) A pair of identical empty beakers are inserted into opposite ends of a scale. One beaker is

filled with one gallon of lead. The other beaker is filled with 10 gallons of water. A copper

sphere is suspended inside the water and supported by a string fixed outside the balance.

The scale is balanced. What is the volume of the copper cylinder?

(7 Marks)

H₂O

Balanced

Pb

Fig: 1