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
D
You might also like to view...
A _____ is a telescope designed to capture images of faint objects such as the corona of the Sun that are near relatively bright objects
A) compound telescope B) coronagraph C) corona loop D) filler telescope
The Sun is gradually increasing in brightness as it ages. Why isn't this considered to be an explanation for global warming?
A) A change in the Sun's brightness would not be expected to have any effect on Earth's average temperature. B) The scientists are covering up this potentially valid explanation. C) The amount of energy the Earth receives from the Sun remains constant regardless of what the Sun does. D) The Sun is increasing in brightness much too slowly to be causing the current warming.
Optical SETI is useful for
A) focused communication over short distances and in particular directions B) communication over wide areas and large distances C) communication over large distances in directions where interstellar dust is not present D) communication with civilizations which surround similar stars to our Sun and hence have evolved to see visible radiation
The same object in different inertial reference systems:
a. will always have the same kinetic energy, regardless of the reference system. b. can have different amounts of kinetic energy viewed from each inertial reference system. c. cannot be studied from two different reference systems. d. can have different amounts of gravitational potential energy in different reference systems, but will always have the same amount of kinetic energy. e. sometimes conserves energy and sometimes does not, depending on inertial reference system.