Consider a uniform horizontal electric field of 50 N/C directed toward the east. If the electric potential at a given point in the field is 80 V, what is the potential at a point 1.0 m directly south of that point?
A) 50 V B) 30 V C) 0 V D) 80 V
D
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Physical Pendulum: A simple pendulum that consists of a small ball of mass m and a massless wire of length L swings with a period T. Suppose now that the mass is rearranged so that mass of the ball was reduced but the mass of the wire was increased, with the total mass remaining m and the length being L. What is true about the new period of swing? (There could be more than one correct choice.)
A. The new period is T because the total mass m has not changed. B. The new period is T because the length L has not changed. C. The new period is greater than T. D. The new period is less than T. E. The new period is T because neither L nor m have changed.
Much settlement in early American history was near rivers and streams so people could take advantage of water power to run factories
What will be an ideal response?
What kind of time can be read directly from a sundial?
A) apparent solar time B) mean solar time C) standard time D) universal time
In the radiation field from an antenna, the electric and magnetic fields are
A) perpendicular to one another. B) anti-parallel to one another. C) anti-perpendicular to one another. D) parallel to one another. E) never in any geometric arrangement with respect to one another.