Exam 11: Fluids

A small sculpture made of brass (rbᵣₐss = 8470 kg/m³)is believed to have a secret central cavity.The weight of the sculpture in air is 15.76 N.When it is submerged in water,the weight is 13.86 N.What is the volume of the secret cavity?

After a moving van drives onto a river ferry,the ferry sinks 0.0367 m.The length and width of the ferry are 15.24 m and 6.10 m,respectfully.Determine the weight of the moving van.

A large vat is continually filled with a viscous liquid that flows from two equally long,cylindrical pipes,labeled A and B,onto a conveyer belt as shown in the drawing.The diameter of pipe B is 1.75 times larger than that of pipe A.What is the ratio of the average volume flow rate of the liquid exiting pipe B to that of the liquid exiting pipe A?

A glass tube has several different cross-sectional areas with the values indicated in the figure.A piston at the left end of the tube exerts pressure so that mercury within the tube flows from the right end with a speed of 8.0 m/s.Three points within the tube are labeled A,B,and C. Notes: The drawing is not drawn to scale. Atmospheric pressure is 1.01 × 10⁵ N/m²;and the density of mercury is 13 600 kg/m³. -What is the total pressure at point A?

A glass tube has several different cross-sectional areas with the values indicated in the figure.A piston at the left end of the tube exerts pressure so that mercury within the tube flows from the right end with a speed of 8.0 m/s.Three points within the tube are labeled A,B,and C. Notes: The drawing is not drawn to scale. Atmospheric pressure is 1.01 × 10⁵ N/m²;and the density of mercury is 13 600 kg/m³. -What is the total pressure at point C?