Monday, 8 September 2014

DENSITY AND FLOATING


1. What is the formula for density?

…………………………………………………………………………………………………

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?

…………………………………………………………………………………………………

(b) if the volume of the bronze statue is 0.1 m3 how heavy is it?

…………………………………………………………………………………………………

3. What is the density of a rock if 0.4 m3 has a mass of 1200 kg?

………………………………………………………………………………………………………………………………


4. If a solid object floats in water what does this tell you about its density?

………………………………………………………………………………………………………………………………

5. In that case why will an iron ship float in water?

…………………………………………………………………………………………………
…………………………………………………………………………………………………

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?

…………………………………………………………………………………………………