1. Explain why some people experience nose bleeding and some others
experience shortness of breath at high elevations.
2. Someone claims that the absolute pressure in a liquid of constant
density doubles when the depth is doubled. Do you agree? Explain.
3. A tiny steel cube is suspended in water by a string. If the lengths of
the sides of the cube are very small, how would you compare the
magnitudes of the pressures on the top, bottom, and sides of the
cube?
4. Express Pascal’s law, and give a real world example of it.
5. Consider two identical fans, one at sea level and the other on top of
a high mountain, running at identical speeds. How would you
compare (a) the volume flow rates and (b) the mass flow rates of
these two fans?
6. The diameters of ram and plunger of an hydraulic jack press 200
mm and 30 mm respectively. Find the weight lifted by the hydraulic
press when the force of applied at the plunger is 400 N?
