Consider the steady, two-dimensional, incompressible velocity field for cylindrical coordinates ug -where k is a constant and ur-0. this represents a line vortex whose axis lies along the z- coordinate. calculate the pressure as a function of r and e

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius

The amount of heat required to change liquid water to vapor at its boiling temperature is 2256 kj/kg. the amount of heat required to change liquid mercury to its vapor state at its boiling temperature is 295 kj/kg. one kg of each substance is currently at its boiling point. how will the amount of thermal energy required to change each substance from a liquid to a gas differ?