What is thermal expansion?
a. The way materials almost always increase their volume as they get warmer.
b. The way materialsalmostalways increase their volume as they get warmer.
c. The universe getting larger as it gets older.
d. The way materials almost always get larger as they get colder.
e. The way almost all materials get larger as heat is exchanged between them and other objects.
b
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The quantity called the "enclosed mass" M( A) concentrated in the center
B) spread out over a large volume
C) distributed in the shape of a doughnut, with a hole in the center
D) impossible to say
What is the power output in an ac series circuit with 12.0 ? of resistance, 15.0 ? of inductive reactance, and 10.0 ? of capacitive reactance, when the circuit is connected to a 120-V rms power supply?
A) 3.21 kW B) 4.49 kW C) 1.02 kW D) 6.00 kW
Graphical Analysis: The figure shows a graph of the velocity of an object as a function of time. What is the displacement of the object from 0 s to 8.0 s?
A. 20 m B. 40 m C. 60 m D. 80 m E. 100 m
In design, ______ is the closeness of elements.
A. unity B. balance C. proximity D. contrast