Related InterviewSolutions

• A fluid is undergoing steady flow. Therefore: A. the velocity of any given molecule of fluid does not change B. the pressure does not vary from point to point C. the velocity at any given point does not vary with time D. the density does not vary from point to point E. the flow is not uphill or downhill
• Water is pumped through the hose shown below, from a lower level to an upper level. Compared to the water at point 1, the water at point 2A. has greater speed and greater pressure B. has greater speed and less pressure C. has less speed and less pressure D. has less speed and greater pressure E. has greater speed and the same pressure
• A non-viscous incompressible liquid is flowing through a horizontal pipe of constant cross section. Bernoulli’s equation and the equation of continuity predict that the drop in pressure along the pipe: A. is zero B. depends on the length of the pipe C. depends on the fluid velocity D. depends on the cross-sectional area of the pipe E. depends on the height of the pipe
• Barometers and open-tube manometers are two instruments that are used to measure pressure. A. Both measure gauge pressure B. Both measure absolute pressure C. Barometers measure gauge pressure and manometers measure absolute pressure D. Barometers measure absolute pressure and manometers measure gauge pressure E. Both measure an average of the absolute and gauge pressures
• Which of the following statements about Pascal’s principle is true? A. It is valid only for incompressible fluids B. It explains why light objects float C. It explains why the pressure is greater at the bottom of a lake than at the surface D. It is valid only for objects that are less dense than water E. None of the above are true
• The hydraulic automobile jack illustrates: A. Archimedes’ principle B. Pascal’s principle C. Hooke’s law D. Newton’s third law E. Newton’s second law
• Consider a pipe containing a fluid, with the fluid being at rest. To apply Bernoulli’s equation to this situation: A. set v equal to zero because there is no motion B. set g equal to zero because there is no acceleration C. set v and g both equal to zero D. set p equal to the atmospheric pressure E. cannot be done, Bernoulli’s equation applies only to fluids in motion
• A blast of wind tips a sailboat in the clockwise direction when viewed from the stern. When the wind ceases the boat rotates back toward the upright position if, when it is tilted, the center of buoyancy: A. is above the center of gravity B. is below the center of gravity C. is to the right of the center of gravity D. is to the left of the center of gravity E. coincides with the center of gravity
• A bucket of water is pushed from left to right with increasing speed across a horizontal surface. Consider the pressure at two points at the same level in the water. A. It is the same B. It is higher at the point on the leftC. It is higher at the point on the right D. At first it is higher at the point on the left but as the bucket speeds up it is lower there E. At first it is higher at the point on the right but as the bucket speeds up it is lower there 
• Which of the following five statements, concerning the upper surface pressure of a liquid, is FALSE? A. It is independent of the surface area B. It is the same for all points on that surface C. It would not increase if the liquid depth were increased D. It would increase if the liquid density were increased E. It would increase if the atmospheric pressure increased