The pressure increases linearly with depth 54 a woman

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Unformatted text preview: uid at the surface is in mechanical equilibrium c. The fluid below the surface has a propensity toward the mechanical equilibrium d. The pressure increases linearly with depth 54. A woman floats comfortably in a sitting position in a body of water. Her entire torso (above the belly button) is above the surface of the water. What does this situation tell you about the water? a. It’s not possible b. The water has a dissolved additive (such as salt) which makes it much more dense than fresh water c. The temperature of the water is significantly higher than normal d. The woman is wearing a hat made of buoyant material Page 8 of 15 ©Prep101 55. A fish prepares a home for its young by taking gulps of air and blowing saliva coated bubbles which collect at the waters surface. The fertilized eggs are then deposited individually into the bubbles. The bubbles sink until the entire air pocket is immersed in water, then the entire nest remains floating just below the surface of the water. What can we say about the eggs of the fish. a. They have a large mass b. They are large in volume c. The have a density greater than water d. They have a density equal to water 58. Two pistons of a hydraulic lift have radii of 2.67 cm and 20.0 cm. The downward force on the 2.67 cm piston that is required to lift a mass of 2000 kg supported by the 20 cm piston is: a. b. c. d. Questions 56-57 refer to the figure below A) B) P P 270 N 350 N 36 N 1500 N Questions 59-61 refer to the figure below F W 0 d C) 0 D) P 0 d d d 0 P A hydrolic lift d Plots of pressure vs. depth 56. Which of the plots describes pressure (p) with depth below the surface (d)? a. b. c. d. A B C D 57. Which of the plots describes change in pressure change with depth below surface (d)? a. b. c. d. A B C D D 59. A hydrolic lift is shown. if the diameter of the smaller piston (d) is 4.0 cm. The diameter of the larger piston (D) is 40 cm. What weight can the larger piston support when a force of 250 N is applied to the smaller piston? a. 2.5 N b. 25 N c....
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This note was uploaded on 03/23/2011 for the course CHEM 100 taught by Professor Vallis during the Spring '11 term at Dalhousie.

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