The water level in a metric measuring cup is 0.75 L before the addition of a pebble weighing 150 g. The water level after submerging the pebble is 0.82 L

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#1

The water level in a metric measuring cup is 0.75 L before the addition of a pebble weighing 150 g. The water level after submerging the pebble is 0.82 L.
Determime the density of the pebble.


#2

The volume displaced by the pebble
= 0.82 - 0.75
= 0.07 L = 70 ml.
Mass of the pebble = 150 g.
Therefore, density of the pebble is,
Density = Mass/ Volume=150/70=2.14 gm${{L}^{-1}}$