Supplemental Instruction
Iowa State University / Leader: / Song
Course: / PHYS 111
Instructor: / Furukawa
Date: / November 9, 2016
Important equations: TC = (TF - 32) 59；TK = TC + 273.15；DL = aL0DT；DV = bV0DT；Q = mcDT；Qfusion = mLf；Qvaporization = mLv；Qt = kADTL；Qt = esAT4；s = 5.67 ´ 10-8 W(m2×K4).
1. (T/F) SI unit of heat is joule (J).
2. (T/F) One calorie (cal) is the amount of heat required to raise the temperature of one gram of water by one degree Celsius.
3. (T/F) A property that changes with temperature is called a thermometric property.
4. Two drinking glasses are stuck, one inside the other. How would you get them unstuck?
A) run hot water over them both
B) put hot water in the inner one
C) run hot water over the outer one
D) run cold water over them both
E) break the glasses
5. Metals such as brass expand when heated. The thin brass plate in the movie has a circular hole in its center. When the plate is heated, what will happen to the hole?
A) gets larger
B) gets smaller
C) stays the same
D) vanishes
6. Refer to the figure above. A bimetallic strip, consisting of metal G on the top and metal H on the bottom, is rigidly attached to a wall at the left. The coefficient of linear thermal expansion for metal G is greater than that of metal H. If the strip is uniformly heated, it will
A) curve upward.
B) remain horizontal, but get longer.
C) remain horizontal, but get shorter.
D) bend in the middle.
E) curve downward.
7. A steel bridge is 1000 m long at -20°C in winter. What is the change in length when the temperature rises to 40°C in summer? The average coefficient of linear expansion of this steel is 11 × 10-6 K-1.
8. Express a body temperature 98.6°F in Celsius degrees.