The electric potential of a charge distribution is given by the equation V(x) = 3 x2 y2 + y z3 - 2 z3x, where x, y, z are measured in meters and V is measured in volts
Calculate the magnitude of the electric field vector at the position (x,y,z) = (1.0, 1.0, 1.0). A)
4.3 V/m
B)
2.0 V/m
C)
-8.1 V/m
D)
8.6 V/m
E)
74 V/m
D
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A. 0.910 mJ B. 1.83 mJ C. 3.65 mJ D. 7.31 mJ E. 5.48 mJ
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In the above H-R diagram sketch, which star is a blue giant?
A. A B. B C. C D. D E. E
When two strings of equal length on a guitar are played, two different pitches are heard. Comparing the waves on the lower pitch string to the higher, the waves on the higher pitch string have
A. a shorter wavelength. B. a larger period. C. a larger amplitude. D. a higher speed.