A crown has a mass of 386 g and a volume of 20 cm³. Calculate its density in g/cm³ and decide whether it would float in water.

Fluids Challenge #1 — Density & Buoyancy

Does the crown
float?

Fluids Easy

Problem

A jeweller hands you a small crown with a mass of 386 g and a volume of 20 cm³. Calculate its density — and decide for yourself: would it float in water?

Mass\( m = 386\ \mathrm{g} \)
Volume\( V = 20\ \mathrm{cm^3} \)
Water density\( 1\ \mathrm{g/cm^3} \)
Answer ing/cm³

Submit the density as a number — the float-or-sink verdict is in the mark scheme.

Hint: density is how much mass fits into each unit of volume. With grams and cm³ you get g/cm³ directly — then compare your number with water’s 1 g/cm³.

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g/cm³

Numeric answers allow ±1% tolerance for rounding.

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Does the crownfloat?

Problem

Submit your answer

Does the crown
float?