** 44. A square insulating plate, 2 meters by 2 meters, lies flat on the floor. A total charge Q = 8 x 10-8 C is distributed uniformly on the sheet. A pith ball (a small non-conducting ball made of a light spongy plant material called "pith"), also with charge Q = 8 × 10-8 C, is fixed 50 cm directly above the center of the plate. Point A is located 5 cm from the plate, directly below the pith ball, as shown. Pith ball 0.50 m ХА 0.050 m↑ ++++ ++++ a) What is the electric field at A due to the plate (magnitude and direction)? b) What is the electric field at A due to the pith ball (magnitude and direction)? c) What is the net electric field at A (magnitude and direction)? d) What force (magnitude and direction) would an electron experience if it were located at point A?

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** 44. A square insulating plate, 2 meters by 2 meters, lies flat on the floor. A total charge
Q = 8 x 10-8 C is distributed uniformly on the sheet. A pith ball (a small non-conducting ball
made of a light spongy plant material called "pith"), also with charge Q = 8 × 10-8 C, is fixed
50 cm directly above the center of the plate. Point A is located 5 cm from the plate, directly
below the pith ball, as shown.
Pith ball
0.50 m
X A
0.050 m↑
+++
+++
-++++
a) What is the electric field at A due to the plate (magnitude and direction)?
b) What is the electric field at A due to the pith ball (magnitude and direction)?
c) What is the net electric field at A (magnitude and direction)?
d) What force (magnitude and direction) would an electron experience if it were located
at point A?
1
Transcribed Image Text:** 44. A square insulating plate, 2 meters by 2 meters, lies flat on the floor. A total charge Q = 8 x 10-8 C is distributed uniformly on the sheet. A pith ball (a small non-conducting ball made of a light spongy plant material called "pith"), also with charge Q = 8 × 10-8 C, is fixed 50 cm directly above the center of the plate. Point A is located 5 cm from the plate, directly below the pith ball, as shown. Pith ball 0.50 m X A 0.050 m↑ +++ +++ -++++ a) What is the electric field at A due to the plate (magnitude and direction)? b) What is the electric field at A due to the pith ball (magnitude and direction)? c) What is the net electric field at A (magnitude and direction)? d) What force (magnitude and direction) would an electron experience if it were located at point A? 1
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