Visit this PhET density simulation (http://openstaxcollege.org/l/16phetmasvolden
ID: 985506 • Letter: V
Question
Visit this PhET density simulation (http://openstaxcollege.org/l/16phetmasvolden) and select Custom Blocks and then My Block. (a) Enter mass and volume values for the block such that the mass in kg is less than the volume in L. What does the block do? Why? Is this always the case when mass < volume? (b) Enter mass and volume values for the block such that the mass in kg is more than the volume in L. What does the block do? Why? Is this always the case when mass > volume? (c) How would (a) and (b) be different if the liquid in the tank were ethanol instead of water? (d) How would (a) and (b) be different if the liquid in the tank were mercury instead of water?
Explanation / Answer
a) Since the mass in Kg is less than the volume in L, hence the density of block will be less than the density of the water, hence the block will be going to float on thw water
b) The mass and volume of the block will depend on the density of the compound, if the density of solvent is less than the density of the brick, then the brick will dip in the solvent
c) The density of ethanol is 0.789 gm/cm^3 and the density of mercury is 5.49 gm/cm^3, hence the block will be easliy floating on the mercury as compared to ethanol and water
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