Unformatted text preview: ical pipe of changing diameter with an
ideal dynamic fluid. The vertical tubes are
connected to the main tube.
64. Which of the four choices in the figure shows
the proper fluid heights if the fluid is flowing
from right to left?
d. D Page 10 of 15 ©Prep101
68. An artery is partially stenosed (blocked) by an
atherosclerotic plaque. Which of the following
statements best describes the system of blood
flowing past the constriction?
a. Blood will rush faster through the
constriction due to the equation of
continuity, causing additional damage to
the vessel wall
b. Bernoulli’s law and the equation of
continuity predict a variation of the
blood pressure in the constricted zone.
The thickened vessel wall prevents any
additional damage due to the increase in
pressure in the region of the lesion.
c. The blood pressure in the constricted
region is lower than the adjacent
vessel, causing the blood vessel to
temporarily collapse at the
d. The blood pressure in the constricted
region is higher than in the adjacent
vessel, causing ballooning of the vessel
in the constriction.
69. The volume flow rate in a blood vessel of
fixed cross-sectional area is halved. By how
much must the blood flow speed change?
Treat blood as an incompressible fluid. a.
d. The speed remains unchanged
The speed doubles
The speed increases four fold
The speed is cut in half 70. When a beam of light enters a glass block,
it ordinarily undergoes a change in:
a. Amplitude only
b. Effective speed only
c. Wavelength only
d. Speed and wavelength Questions 71-75 refer to the figure below
ΙΙΙ 10 – ΙV ΙΙ
-20 –| |
| -2.0 ε[%] -1.0 |
0 The stress-strain relation of compact bone.
Positive values of strain correspond to tension,
negative values corresponds to a compression
of the bone. In an adult male the femur has a
cross-sectional area of 6.2 cm2.
71. Find the maximum tensile force that can be
withstood by the bone.
a. 1.05 × 105 N
b. 1.05 × 105 Pa
View Full Document