Which of the following is an example of a vector quantity?
a. velocity
c. volume
b. temperature
d. mass
A
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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. current B. resistivity C. 1/(current) D. power E. 1/(resistivity)
In high-strength OUHMWPE, the LCMs are oriented ______________to the fiber axis
Fill in the blank(s) with the appropriate word(s).
A top is set spinning so that the rotation is counterclockwise around its axis when viewed from above. When the top is placed on a level surface it happens that its axis of rotation is not quite vertical. Viewed from above, which way does the rotational axis of the top precess?
a. clockwise b. counterclockwise c. It's random, if it starts clockwise it will continue clockwise, and vice versa, i.e., a 50% chance either way. d. The direction depends on the little shove given to the axis when the top is placed on the surface. e. In the northern hemisphere it will be clockwise, in the southern hemisphere it will be counterclockwise.
The tension in each of two strings is adjusted so that both vibrate at exactly 666 Hz. The tension in one of the strings is then increased slightly. As a result, six beats per second are heard when both strings vibrate
What is the new frequency of the string that was tightened? A) 672 Hz B) 660 Hz C) 669 Hz D) 663 Hz