shows an oil tank that has a rectangular base of dimensions 2.4 m by 1.5 m. oil depth of oil 2.4 m 1.5 m
The tank is filled with oil of density 850 kg / m3 to a depth of 1.5 m.
a)calculate the weight of the oil
b) when he is checking the level of oil in the tank, the man drops a brass key into the oil and it sinks to the bottom of the oil.
i) state what this shows about the density of brass
ii) explain how attaching the key to a piece of wood could prevent the key from sinking