The expression(s) indicating the mass number of a nucleus is
a. A.
b. N.
c. Z.
d. Z + N.
e. A – Z.
a, d
Physics & Space Science
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One of the harmonics of a column of air open at both ends has a frequency of 448 Hz and the next higher harmonic has a frequency of 576 Hz. What is the fundamental frequency of the air column?
A) 32 Hz B) 64 Hz C) 88 Hz D) 128 Hz E) 256 Hz
Physics & Space Science
During an isochoric process, the internal (thermal) energy of a gas decreases by 50 J. How much heat is added to the gas during this process?
A) 50 J B) 25 J C) -50 J D) -25 J E) 0 J
Physics & Space Science
Metals are relatively more abundant in
A) old stars. B) new stars. C) neither in particular
Physics & Space Science
Frost wedging is a form of
a) terminal erosion. b) physical weathering. c) chemical weathering. d) slow mass wasting.
Physics & Space Science