19. Fluid Mechanics
Intro to Pressure
06:59
Practice this topic
- Multiple Choice
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?1858views14rank2comments - Multiple Choice
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.)
1587views4rank2comments - Multiple Choice
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.)
1841views14rank5comments - Multiple ChoiceAt point A, a hose ejects water at a speed of . Point B is upstream from, and 30.0cm above, the outlet. If the water is moving at at point B, what is the internal pressure of the water at B? Use for atmospheric pressure and for the density of water.1547views