Lecture 33
Summary
- Archimedes' principle
- Fluid flow and continuity
- Bernoulli equation
 
A metal box is 4 cm wide, 8 cm long, and 3 cm high.  If it has a mass of 64 g, how much of it will float 
above the water?
A. 0.67 cm
B. 1.00 cm
C. 1.50 cm
D. 2.00 cm
Answer
Walker4e
Reading quiz A bimetallic strip is made of two different materials and responds to heat and cold 
as depicted below.  From this we can conclude that the coefficient of thermal expansion for material A 
is _____ the coefficient of thermal expansion for material B.

A. smaller than 
B. larger than 
C. the same as 
Answer
sj6 19.4
 
Convert the normal human body temperature of 98.6°F to the Kelvin scale.
A. 393 K
B. 328 K
C. 240 K
D. 310 K
Answer
sj6 19.8
 
A bridge in WV is a steel arch bridge 518 m in length. How much does its length change between 
extremes of −20.0°C and 35.0°C?  
A. 5.70 mm
B. 34.2 cm
C. 60.5 cm
D. 2.59 m
Answer
sj6 19.17
 
A 50.0-gal steel container is completely filled with CCl4 
(β = 1.18×10−3C°−1 ) at 10.0°C.  
How much will spill out at 30.0°C?
A. 1.14 gal
B. 1.18 gal
C. 0.0236 gal
D. 0.0590 gal
Answer
  
B.  1.00 cm
 
  
A. smaller than 
A material with a higher coefficient of thermal expansion will 
respond more to temperature changes than will a material with a small coefficient of thermal 
expansion.  In the figure we see that material A shrinks less when cooled and expands less when heated 
than does material B.

  
D. 310 K
 
	
  
B. 34.2 cm
 
	
  
A.  1.14 gal  
	
