At point A, a hose ejects water at a speed of $5.10\text{ m/s}$. Point B is upstream from, and 30.0cm above, the outlet. If the water is moving at $2.40\text{ m/s}$at point B, what is the internal pressure of the water at B? Use $101.3\text{kPa}$ for atmospheric pressure and $1000{\text{kg/m}}^3$ for the density of water.

Suppose a 65-kg person jumps from a height of 3.0 m down to the ground.

(e) Estimate the stress and determine if the tibia will break in a stiff-legged landing ( d = 1.0 cm).

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A large warehouse is 100 m wide, 100 m deep, 10 m high:
a) What is the total weight of the air inside the warehouse?
b) How much pressure does the weight of the air apply on the floor?

A tall cylindrical beaker 10 cm in radius is placed on a picnic table outside. You pour 5 L of an 8,000 kg/m³ liquid and 10 L of a 6,000 kg/m³ liquid into. Calculate the total pressure at the bottom of the beaker. (Use g=10 m/s².)

A wooden cube, 1 m on all sides and having density 800 kg/m³ , is held under water in a large container by a string, as shown below. The top of the cube is exactly 2 m below the water line. Calculate the difference between the force applied by water to the top and to the bottom faces of the cube (Hint:calculate the two forces, then subtract. Use g=10 m/s².)

The deepest known point on Earth is called the Mariana Trench, at ~11,000 m (~36,000 ft). If the surface area of the average human ear is 20 cm2, how much average force would be exerted on your ear at that depth?