Asquare nonconducting plate, 2a on a side, has a total charge q uniformly spread over its surface. calculate the electric field vector e at distance z above the plate's center. use the electric field at a distance z above the midpoint of a line of charge of length 2l as a shortcut when solving.

positive reinforcement? ?

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

ok

explanation: