1. In the figure if h 1 = 0.18 cm and h 2 = 4.37 cm and the blue liquid in the U

Question

1. In the figure if h1 = 0.18 cm and h2 = 4.37 cm and the blue liquid in the U-tube is water (1000 kg/m3), what is the density of the green liquid?

2. In the hydraulic lift at the left the red piston has a cross-sectional area of 0.92 m2 and the green piston a cross-sectional area of 0.06 m2 and the force F1 = 171 N. What weight to the nearest newton can this configuration lift?

3. In the previous problem if the green piston is depressed 0.62 meters, how far up would the red piston move to the nearest thousandth of a meter?

4. Water is in the big beaker in the figure on the left. Scale 1 reads 72 newtons, scale 2 reads 898 newtons, and scale 3 reads 0 newtons. The hanging block has a density of 10 × 103 kg/m3. To the nearest tenth of a newton what does scale 1 read after the block is fully lowered into the beaker of water?

5. In Problem 4 to the nearest tenth of a newton what is the new reading on scale 2

6. The experiment in Problem 4 is repeated with the valve opened. What is the new reading on scale 3?

7. In the previous problem, what is the new reading on scale 2?

8. The figure shows a nozzle on a hose carrying water. If the pressure at Point 1 is 337 × 103 Pa, the velocity 0.61 m/s, and the diameter 10 cm, given that the diameter at point 2 is 2.5 cm what is the velocity to the nearest tenth of a m/s at point 2?

9. In Problem 8 what is the pressure to the nearest kPa at point 2?

10. If for the pipe carrying water in a building, h = 181 meters, v1 = 3.87 m/s, and the cross-sectional area at 1 is twice that at 2, what must P1 be, to the nearest KPa, in order that P2 = 101000 Pa?

Explanation / Answer

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