The Roche limit refers to a ________.
A. distance
B. speed
C. density
D. mass
E. force
Answer: A
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If iron with 4.26 weight percent carbon is cooled to room temperature in a normal manner from the melting temperature, it is called _________cast iron.
Fill in the blank(s) with the appropriate word(s).
A spring scale typically indicates the magnitude of the tension force exerted on its bottom hook. What will the scale read in each of the cases shown in the diagram?
A. 49 N
B. 98 N
C. 196 N
D. Other (specify)
Suppose the x-position of an oscillating object is given by 
. What is the object’s speed at time t = 0?
A. A
B. Zero
C. 
D. 
E. 
F. Something else (specify)
T. We are not given enough information to answer.
A building made with a steel structure is 650 m high on a winter day when the temperature is 0°F. How much taller (in cm) is the building when it is 100°F? (The linear expansion coefficient of steel is 11 × 10?6 (°C)?1.)
A. 71 B. 36 C. 40 D. 46 E. 65