A lapping disk travels at 30 m/s over a surface to be lapped and polished. The lapping compound acts like water with the same properties as water. Determine the maximum lapping compound temperature.
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Three equal positive charges are placed on the x-axis, one at the origin, one at x = 4 m, and the third at x = 7 m. Of the following points, which has the greatest magnitude electric field?
a. x = 3 m b. x = 5.5 m c. x = 8 m d. The electric field has the same magnitude at all three positions. e. x = 0 m
What is this a picture of?
A) a total solar eclipse B) a total lunar eclipse C) the saros cycle D) a full moon
Instructions: On occasion, the notation 
will be a shorthand notation for 
.
When three vectors, 
, 
, and 
are placed head to tail, the vector sum + + = 0. If the vectors all have the same magnitude, the angle between the directions of any two adjacent vectors is
A. 30°
B. 60°
C. 90°
D. 120°
E. 150°
The higher the frequency of a wave, the
A) shorter the wavelength. B) longer the wavelength. C) neither of these