DENSITY
AND FLOATING
1. What
is the formula for density?
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2. There
are two statues of exactly the same dog and both are the same size
but one is of bronze (density 6000 kg/m3)
and the other is of iron (density 7300 kg/m3)
(a) which one is the heavier?
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(b) if
the volume of the bronze statue is 0.1 m3
how heavy is it?
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3. What
is the density of a rock if 0.4 m3
has a mass of 1200 kg?
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4. If a
solid object floats in water what does this tell you about its
density?
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5. In
that case why will an iron ship float in water?
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6. A
block of copper is hung from a Newton meter and immersed first in
water (density 1000 kg/m3) and then in brine (salty water) (density
1100 kg/m3). In which liquid will the copper appear to weigh least?
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