Flotation of objects — task. Physics CBSE Live product, Class 9.

1. Why does an iron nail sink in water?

It is too small
It is magnetic
Its density is lower than water
The gravitational force is greater than the upthrust

2. What is the correct formula for density?

\(\frac{Mass}{Volume}\)
\(Weight\ \times\ Volume\)
\(\frac{Volume}{Mass}\)
\(Mass\ \times\ Volume\)

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