For a conductor in electrostatic equilibrium, which of the following statements is NOT true?
A. the electric field inside the conductor is zero
B. the charge distributes itself uniformly throughout the conductor
C. the electric field at the surface of the conductor is perpendicular to the surface of the conductor
D. the greatest concentrations of charge on the surface are in the regions of highest curvature
E. more than one of these statements about a conductor in electrostatic equilibrium is false
B. the charge distributes itself uniformly throughout the conductor
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Some stars vary in brightness. What observing technique is best for observing the details of the changes in brightness?
A) Time-monitoring because we want to track how the brightness changes with time. B) Imaging because an image will show the star getting brighter and dimmer. C) Spectroscopy because changing brightness means changing temperature. D) All of the above are equally useful in detecting variation in brightness.
Daisy raises 10.Kg to a height of 2.5 meters in 2.0 seconds. (a) How much work did she do? (b) How much power was expended? (c) If she raises it in 1.0 s rather than 2.0 s, how do the work and power change?
What will be an ideal response?
To get to her physics class, Alice walks 0.25 mi to the bus stop. She takes the bus 1.2 mi to the train station. She takes the train 13 mi and walks the remaining 0.17 mi to her class
How far is her commute expressed to the correct number of significant figures? A) 14.6 mi B) 10 mi C) 15 mi D) 14.62 mi E) 14.620 mi
What is the molarity of a solution that contains 2 mol of solute in 4 L of solution?