A boat is rowed perpendicular to the shore of a river that flows at 3.0 m/s as shown in the figure. The velocity of the boat is 4.0 m/s relative to the water. What is the magnitude of the
velocity of your boat relative to the shore?

A-5 m/s
B-10 m/s
C-15 m/s
D-20 m/s

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.

What is part of a line has one endpoint and continues in one direction?