@liezel,
liezel wrote:
A solid weighs 500 grams in air and 300 grams when totally immersed in water. What is the buoyant force on the solid?
F = mg = 200 gm * 9.8m/s^2. = 1.96N
Quote:What is the volume of the solid?
Assuming the density of water is 1 gm/ml then 200 gm / 1 gm/ml = 200 ml
Quote:An irregular solid weighs 7.5 N in air, 5.4 N when immersed in water and 5.2 N when fully immersed in another liquid. Find the specific gravity:
a. the solid
Compute specific gravity by comparing the weight of a volume of the material to that same volume of water.
The water volume contributes 7.5 - 5.4 = 2.1 N. The specific gravity of the solid is 7.5 N / 2.1 N
Quote:
b. the unknown liquid
The liquid contributes 7.5 - 5.2 = 2.3N. The specific gravity is 2.3N / 2.1N
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