Water at 20°C enters section 1 at a rate of18 gal/min. The average velocity at section 2 is 3 m/s. A portion of the flow is diverted through the showerhead, which contains 200 holes of 1-mmdiameter. Assuming uniform shower flow, estimate the exit velocity from the showerhead jets.

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.