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Bird bones have air pockets in them to reduce their
Chapter 11, Problem 40(choose chapter or problem)
Problem 40PE
Bird bones have air pockets in them to reduce their weight—this also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 45.0 g and its apparent mass when submerged is 3.60 g (the bone is watertight). (a) What mass of water is displaced? (b) What is the volume of the bone? (c) What is its average density?
Questions & Answers
QUESTION:
Problem 40PE
Bird bones have air pockets in them to reduce their weight—this also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 45.0 g and its apparent mass when submerged is 3.60 g (the bone is watertight). (a) What mass of water is displaced? (b) What is the volume of the bone? (c) What is its average density?
ANSWER:
a.)
Step 1 of 5
The mass of water displaced can be determined by Archimedes principle which states that “ the buoyant force on an object equals the weight of the fluid it displaces”. So, mass of the water displaced equals the apparent mass loss of the bone.