﻿ 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

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

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

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

sj6 19.17
A 50.0-gal steel container is completely filled with CCl4 (β = 1.18×10−3−1 ) 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

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