Question

Priya drops a handful of
pebbles into 350 mL of water. The water level rises to 527 mL. What is the volume (in cm square) of
the pebbles? show your work.
b) What if the water level had risen
to 1 L?​

Answer 1

Answer:

I would expect the water level to fall.

Suppose you have a stone weighing 100g in a box also weighing 100g floating in a basin of water. The weight of water displaced will be equal to the weight of the box + stone, i.e. 200g which is 200ml. If the stone is now dropped into the water the volume displaced will equal to the volume displaced by the box, 100ml + the volume of the stone. Assume a typical density of stone as 2.5g per ml, it’s volume would be 40ml (V = W/D) so the stone will now only displace 40ml of water. The total volume displaced is now 140ml so the water level will fall by the amount equal to 60ml

Explanation:

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