The vector sum of three co-planar forces
a. must be zero.
b. must be perpendicular to one of the three.
c. must be parallel to one of the three.
d. must be perpendicular to the plane.
e. may have any direction in the plane.
e
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Determine a relationship for the volume element in spherical coordinates.
What will be an ideal response?
The graph shows 
versus t for an object moving along straight line. What is the acceleration at t = 11 s?
A. -10 
B. 10
C. 22
D. -22
If the voltage applied to a parallel-plate capacitor is doubled, the electric field between the plates
A) is halved. B) quadruples. C) is tripled. D) remains the same. E) is doubled.
The ____________________ of the Sun is composed of ionized gas and produces a continuous spectrum with a superimposed emission spectrum
Fill in the blank(s) with correct word