•13 O Figure 22-40 shows a proton (p) on the central axis through a disk with a uniform charge density due to excess electrons. The disk is seen from e, an edge-on view. Three of those elec- trons are shown: electron e, at the disk center and electrons e, at oppo- Figure 22-40 Problem 13. -R- site sides of the disk, at radius R from the center. The proton is initially at distance z = R = 2.00 cm from the disk. At that location, what are the magnitudes of (a) the electric field E̟ due to electron e and (b) the net electric field Enet due to electrons e,? The proton is then moved to z = R/10.0. What then are the magnitudes of (c) E, and (d) E,net at the proton's location? (e) From (a) and (c) we see that as the proton gets nearer to the disk, the magnitude of E, increases, as expected. Why does the magnitude of E, net from the two side electrons decrease, as we see from (b) and (d)?

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•13 O Figure 22-40 shows a proton
(p) on the central axis through a disk
with a uniform charge density due to
excess electrons. The disk is seen from e,
an edge-on view. Three of those elec-
trons are shown: electron e, at the
disk center and electrons e, at oppo- Figure 22-40 Problem 13.
-R-
site sides of the disk, at radius R from
the center. The proton is initially at
distance z = R = 2.00 cm from the disk. At that location, what are
the magnitudes of (a) the electric field E̟ due to electron e and (b)
the net electric field Enet due to electrons e,? The proton is then
moved to z = R/10.0. What then are the magnitudes of
(c) E, and (d) E,net at the proton's location? (e) From (a) and (c)
we see that as the proton gets nearer to the disk, the magnitude of
E, increases, as expected. Why does the
magnitude of E, net from the two side
electrons decrease, as we see from
(b) and (d)?
Transcribed Image Text:•13 O Figure 22-40 shows a proton (p) on the central axis through a disk with a uniform charge density due to excess electrons. The disk is seen from e, an edge-on view. Three of those elec- trons are shown: electron e, at the disk center and electrons e, at oppo- Figure 22-40 Problem 13. -R- site sides of the disk, at radius R from the center. The proton is initially at distance z = R = 2.00 cm from the disk. At that location, what are the magnitudes of (a) the electric field E̟ due to electron e and (b) the net electric field Enet due to electrons e,? The proton is then moved to z = R/10.0. What then are the magnitudes of (c) E, and (d) E,net at the proton's location? (e) From (a) and (c) we see that as the proton gets nearer to the disk, the magnitude of E, increases, as expected. Why does the magnitude of E, net from the two side electrons decrease, as we see from (b) and (d)?
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