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