Two large parallel metal plates are uniformly and oppositely charged and the electric field between them is 7.6 × 106 N/C
(a) What is the charge density on each plate?
(b) If the very large charged plates are moved 2 times farther apart, what is the electric field between the plates now?
(a) ± 67. ?C/m2
(b) 7.6 × 106 N/C, unchanged
You might also like to view...
The emf produced by an ac generator is given by 
NBA sin 
t. In the SI system, what is the value of 
for a frequency of 60.0 Hz?
A. 60.0 Hz
B. 120 rad/s
C. 2.00
rad/s
D. 377 rad/s
E. 377 Hz
What do we mean by accretion in the context of planet formation?
A) the growth of planetesimals from smaller solid particles that collided and stuck together B) the formation of moons around planets C) the solidification of ices, rocks, and metal from the gas of the solar nebula D) the growth of the Sun as the density of gas increased in the center of the solar nebula
Which of the following statements about Earth's troposphere is not generally true?
A) It is the layer of the atmosphere in which ozone absorbs dangerous ultraviolet light from the Sun. B) It is the lowest layer of the atmosphere. C) It is the layer of the atmosphere in which convection plays the most important role. D) It is a layer of the atmosphere in which temperature declines with increasing altitude.
Suppose the Sun were suddenly to shrink in size but that its mass remained the same. According to the law of conservation of angular momentum, what would happen?
A) The Sun would rotate faster than it does now. B) The Sun's rate of rotation would slow. C) The Sun's angular size in our sky would stay the same. D) This could never happen, because it is impossible for an object to shrink in size without an outside torque.