Problem 4:

What is the buoyant force acting on small boat that displaces 90 m^3 volume of water? (1.0 m^3 of water weighs 9 800 N).

Problem 5:

A 40-cm tall glass is filled with water to a depth of 30 cm. a. What is the gauge pressure at the bottom of the glass? b. What is the absolute pressure at the bottom of the glass?

Problem 6:

A box has a weight of 150 lbs and the bottom of the box is 12 in^2. What is the pressure the box exerts on the floor in Pascal?