Two uniform rods, each of length 2.0 m, are bent to form semicircles. One rod has a charger per unit lent of 1.5 nC/m, and the other has a charge per unit length of -1.5 nC/m. The semicircles are joined to make a circle. What is the magnitude of the electric field at the center of the circle?
A. 42 N/C
B. 84 N/C
C. 34 N/C
D. 68 N/C
E. 0
Answer: B
You might also like to view...
What is an asterism?
a. A legend or folklore association to a grouping of stars b. Less formally defined group of stars outside the official 88 constellations c. The council of astronomers who defined the 88 constellations d. The northern pivot point of the celestial sphere e. Constellations close enough to a celestial pole that they do not appear to rise from the east and set in the west
Process of Science: Our theory of solar system formation suggests that larger planets cool more slowly than small ones
What does this suggest regarding geologic activity on Venus? Do we expect Venus to be geologically active? How did scientists test this hypothesis?
If the resultant force acting on a 2.0-kg object is equal to 
N, what is the change in kinetic energy as the object moves from 
m to
src="https://sciemce.com/media/2/ppg__cognero__Chapter_9_Energy_in_Nonisolated_Systems.__media__e45505c6-cd94-4a7d-9369-dadf59e7a269.PNG" data-wiris-created="true" class="Wirisformula" align="middle" />m? A. +36 J B. +28 J C. +32 J D. +24 J E. +60 J
In straight-line motion, if a moving object slows down, the direction of the acceleration is ______________ the direction of the velocity
Fill in the blank(s) with correct word