trinrox trinrox

11-10-2017
Chemistry

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A cube measuring 2cm on each side weights 5g will it sink or float in water

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ngjeffreyoxl4qi ngjeffreyoxl4qi

11-10-2017

The force of buoyancy is: F= ρVg. The density of water is 1000kg/m^3 and the V is 8x10^-6m³. Therefore: F = 1000 x (8x10⁻⁶) x 9.8m/s² = 0.0784N.
Compared to the force of gravity(F = mg = 0.005kg x 9.8m/s² = 0.049N), since the force of buoyancy is greater, it will float.

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