A piece of polystyrene weighs 5.0 N in air, and has density of 400kg/m3.If the piece is floats completely over the surface of water, what is the magnitude of its apparent weight in water?

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is

Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.