The coefficient of area expansion is
a. half the coefficient of volume expansion.
b. three halves the coefficient of volume expansion.
c. double the coefficient of linear expansion.
d. triple the coefficient of linear expansion.
c
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Energy Levels: If a hydrogen atom in the ground state absorbs a photon of energy 12.09 eV, to which state will the electron make a transition?
A. n = 2 B. n = 3 C. n = 4 D. n = 5
One 3.2-kg paint bucket is hanging by a massless cord from another 3.2-kg paint bucket, also hanging by a massless cord, as shown in the figure
a) If the buckets are at rest, what is the tension in each cord?
b) If the two buckets are pulled upward with an acceleration of 1.25 m/s by the upper cord, calculate the tension in each cord.
_____ was the first person to produce a detailed heliocentric model of the Universe with substantial justifying arguments
A) Aristotle B) Nicolaus Copernicus C) Claudius Ptolemy D) Galileo Galilei
The charge on a glass rod which has been rubbed with silk is called positive:
A) by arbitrary convention B) so that the proton charge will be positive C) to conform to the conventions adopted for G and m in Newton's law of gravitation D) because like charges repel E) because glass is an insulator