Physics, 12.07.2019 23:30 jordanrini
An amplifier is tested for total harmonic distortion (thd) by using a single-tone test. the output is observed on a spectrum analyzer. it is found that the peak values of the measured harmonics decrease acordingto an eponetial recursiooehen-.4. 5. a) assuming that vi-2, plot the single-sided harmonic spectrum vi for n-1, b) compute the corresponding total harmonic distortion (thd)?
Answers: 1
Physics, 22.06.2019 19:40
Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.
Answers: 3
Physics, 22.06.2019 23:20
Consider each of the electric- and magnetic-field orientations given next. in each case, what is the direction of propagation of the wave? a)\vec ein the +xdirection,\vec bin the +ydirection. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction b)\vec ein the -y direction,\vec bin the +x choose+ x direction- x direction+ y direction- y direction+ z direction- z direction c)\vec ein the +z direction,\vec bin the -x direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction d)\vec ein the +y direction,\vec bin the -z direction. choose+ x direction- x direction+ y direction- y direction+ z direction- z direction
Answers: 3
Physics, 23.06.2019 03:40
Anumber of conditions are required for a population to be in hardy-weinberg equilibrium. which of the following are correct descriptions of the conditions that must be met? check all that apply. a. no mutations b. random mating c. small population d. migration or gene flow e. occurrence of mutations f. no natural selection
Answers: 1
An amplifier is tested for total harmonic distortion (thd) by using a single-tone test. the output i...
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