15 SSM ILW A spherical drop of water carrying a charge of 30 PC has a potential of 500 V at its surface (with V = 0 at infinity). (a) What is the radius of the drop? (b) If two such drops of the same charge and radius combine to form a single spherical drop, +291 what is the potential at the surface of the new drop? -341 +492

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**15 SSM ILW A spherical drop of water carrying a charge of 30
PC has a potential of 500 V at its surface (with V = 0 at infinity).
(a) What is the radius of the drop? (b) If two such drops of the
same charge and radius combine to form a single spherical drop,
what is the potential at the surface
of the new drop?
-341
+291
16 Go Figure 24-37 shows a rec-
tangular array of charged particles
fixed in place, with distance a = 39.0
cm and the charges shown as integer
multiples of q₁ = 3.40 pC and q2 =
q1
6.00 pC. With V = 0 at infinity, what
la
1
+492
+291
-91
+492
Figure 24-37 Problem 16.
Transcribed Image Text:**15 SSM ILW A spherical drop of water carrying a charge of 30 PC has a potential of 500 V at its surface (with V = 0 at infinity). (a) What is the radius of the drop? (b) If two such drops of the same charge and radius combine to form a single spherical drop, what is the potential at the surface of the new drop? -341 +291 16 Go Figure 24-37 shows a rec- tangular array of charged particles fixed in place, with distance a = 39.0 cm and the charges shown as integer multiples of q₁ = 3.40 pC and q2 = q1 6.00 pC. With V = 0 at infinity, what la 1 +492 +291 -91 +492 Figure 24-37 Problem 16.
16b. Starting with all the charges at ∞o, what is the potential at the upper left corner,
and how much work is done to put the charge at the upper left corner?
V₁ 2206
1501srlo rub
W₁ =
rank
Joules
Pun
Volts
16c. What is the potential at the location
work is done to bring in the 2nd charge?
V2 = V12 =
Volts
Istins.00 =
V3 = V13 + V23 =
of 2, due to the previous charges? How much
Make sure you use the correct distance.
W₂ =
16d. What is the potential at the location of 3, due to the previous charges? How much
work is done to bring in the 3rd charge? Make sure you use the correct distance.
V23 =
Volts
V13 =
Yespierto
V
Joules
W3 =
Volts
16107 91 216W
Joules
U-WE
Transcribed Image Text:16b. Starting with all the charges at ∞o, what is the potential at the upper left corner, and how much work is done to put the charge at the upper left corner? V₁ 2206 1501srlo rub W₁ = rank Joules Pun Volts 16c. What is the potential at the location work is done to bring in the 2nd charge? V2 = V12 = Volts Istins.00 = V3 = V13 + V23 = of 2, due to the previous charges? How much Make sure you use the correct distance. W₂ = 16d. What is the potential at the location of 3, due to the previous charges? How much work is done to bring in the 3rd charge? Make sure you use the correct distance. V23 = Volts V13 = Yespierto V Joules W3 = Volts 16107 91 216W Joules U-WE
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