5.2 Harder Questions

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Collins p.106 Q.1-3. (Table of densities below)

1. Objects that will sink. 

 wood in oil (depends on type of wood)

silver in air

gold in mercury

2. dimensions = 0.065 x 0.2 x 0.09 = 0.00117 

mass = 2.22 kg

Density = m/V = 2.22/0.00117 = 1897 kg/m^3

3. If the crown is pure gold, the new volume of the water would be 800+100 = 900cm^3. (Density = m/V, 19.3 = 1930/V, V=100cm^3.) The water level would be greater than 900cm^3 since iron has lesser density (therefore greater volume with the same mass) than gold.