One mole of aluminum consists of ______________ aluminum atoms
Fill in the blank(s) with correct word
6.02 × 10^23
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Ohm's Law: For the graph shown in the figure, what physical quantity does the slope of the graph represent for ohmic material?
A. power B. resistivity C. 1/(resistivity) D. resistance E. 1/(resistance)
When a guitar is tuned to adjust it pitch, what is it that is changed?
A) The wavelength of the fundamental. B) The amplitude of the fundamental. C) The frequency of the fundamental.
Which of the following is true of poor galaxy clusters?
A) They contain about 1500 to 2500 galaxies. B) They primarily contain elliptical galaxies. C) They are densely crowded toward the center. D) They are irregularly shaped.
An object is moving with constant non-zero acceleration in the +x direction. The velocity versus time graph of this object is
A) a horizontal straight line. B) a vertical straight line. C) a straight line making an angle with the time axis. D) a parabolic curve.