This preview shows page 1. Sign up to view the full content.
Unformatted text preview: uid at the surface is in
c. The fluid below the surface has a
propensity toward the mechanical
d. The pressure increases linearly with
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.
d. Questions 56-57 refer to the figure below A) B) P P 270 N
1500 N Questions 59-61 refer to the figure below
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.
D 57. Which of the plots describes change in
pressure change with depth below surface (d)? a.
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
View Full Document
This note was uploaded on 03/23/2011 for the course CHEM 100 taught by Professor Vallis during the Spring '11 term at Dalhousie.
- Spring '11