Water at a gauge pressure of p = 5.8 atm at street level flows into an office building at a speed of 0.68 m/s through a pipe 5.0 cm in diameter. the pipe tapers down to 2.6 cm in diameter by the top floor, 16 m above, where the faucet has been left open. assume no branch pipes and ignore viscosity.
a. calculate the flow velocity. express your answer to two significant figures and include the appropriate units.
b. calculate the gauge pressure in the pipe on the top floor.

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)