A cargo ship travels from the Atlantic Ocean (salt water) to Lake Ontario (freshwater) via the St. Lawrence River. The ship rides several centimeters lower in the water in Lake Ontario than it did in the ocean. Explain.

Suppose you spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.461×10−3 m3/sand the diameter of the nozzle you hold is 5.67×10−3 m. At what speed ? does the water exit the nozzle?

Water entering a house flows with a speed of  0.2000 m/s through a pipe of  2.000 cm inside radius. What is the speed of the water at a point where the pipe tapers to a radius of  5.000 mm? in M/s

A large pipe with a radius of 50 cm has oil flowing through in at 1.5 m/s. The pipe narrows into a narrower tube with a raduis of 10 cm. what is the speed of the oil flowing through the smaller pipe? 1. 0.375 m/s 2. 3.75 m/s 3. 37.5m/s 4. 0.25 m/s 5. none

Bird bones have air pockets in them to reduce their weight—this also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 42.3 g and its apparent mass when submerged is 2.61 g (the bone is watertight). (a) What mass (in g) of water is displaced? g (b) What is the volume (in cm3) of the bone? cm3 (c) What is its average density (in g/cm3)? g/cm3

A wooden raft has a mass of 50 kg. When empty it floats in water (density 1000 kg/m3) with 69% of its volume submerged. What mass of sand can be put on the raft without it sinking?

An ideal incompressible fluid flows through a pipe of diameter 5.9 cm at a speed of 4.0 m/s. What volume of water passes any single location in the pipe over 3.9 s? Give your answer in m³.

A flat-bottomed aluminum fishing boat has a mass of 60 kg and an area of 4.0 m2. When it is launched into the water (density 1,000 kg/m3), how far (in m) below the surface of the water does the bottom of the boat sink?

4. A garden hose having an internal diameter of 3.5 cm is connected to a lawn sprinkler that consist merely of an enclosure with 12 holes, each 0.5 cm in diameter. If the water in the hose has a speed of 3 m/s, at what speed does it leaves the sprinkler holes?

Blood in a carotid artery carrying blood to the head is moving at 0.15 m/s when it reaches a section where plaque has narrowed the artery to 75% of its diameter. What is the speed of the blood in the narrow section? Ignore the blood viscosity. Density of blood is 1060 kg/m^3.