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Did you complete the reading assignment? (Typically this means at least 20-30
minutes looking over the assigned sections of the book.)
Where is the pressure greater, one meter beneath the surface of Lake
Michigan or one meter beneath the surface of a swimming pool?
The buoyant force of a submerged object always equals:
the weight of the object
the net force on the object
the weight of the water that would otherwise
occupy the object's space
one requires some careful thinking.) A cannon sits in a boat on a lake. A person
now throws the cannon overboard and it sinks to the bottom. Compared to when the
cannon was in the boat, will the overall water level of the lake (as measured on
the shore) rise, fall or stay the same?
stay the same
Ralph measures the pressure in his flat tire with a standard automotive
pressure gauge. The gauge reads zero. Should Ralph really believe that the
pressure inside the tire is zero, or should he not? Explain.
The comments in the next next two boxes go into a big, mostly anonymous text
file that I skim through before the morning lecture, using the comments to help
me plan class discussion. ("Mostly anonymous", because I can track down who made
what comment, but it takes some effort on my part to do so.) Therefore, if you
really want to make sure I see your question/comment and answer it individually,
you should send it to me via email and not through this form.
Which part of today's assignment was particularly hard or confusing? What
would you like to spend extra time on in class?
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