A particle with charge -40.0 nC is on the x axis at the point with coordinate x = 0. A second panicle, with charge -20.0 nC, is on the x axis at x = 0.500 in. (i) Is the point at a finite distance where the electric field is zero (a) to the left of .v = 0, (b) between x = 0 and x = 0.500 in, or (c) to the right of x m 0.500 in? (ii) Is the electric potential zero at this point? (a) No; it is positive, (b) Yes. (c) No; it is negative. (iii) Is there a point at a finite distance where the electric potential is zero? (a) Yes; it is to the left of x = 0. (b) Yes; it is between x = 0 and x = 0.500 in. (c) Yes; it is to the right of x = 0.500 in. (d) No.
A particle with charge -40.0 nC is on the x axis at the point with coordinate x = 0. A second panicle, with charge -20.0 nC, is on the x axis at x = 0.500 in. (i) Is the point at a finite distance where the electric field is zero (a) to the left of .v = 0, (b) between x = 0 and x = 0.500 in, or (c) to the right of x m 0.500 in? (ii) Is the electric potential zero at this point? (a) No; it is positive, (b) Yes. (c) No; it is negative. (iii) Is there a point at a finite distance where the electric potential is zero? (a) Yes; it is to the left of x = 0. (b) Yes; it is between x = 0 and x = 0.500 in. (c) Yes; it is to the right of x = 0.500 in. (d) No.
Solution Summary: The author explains that the electric field is zero between x=0 and
A particle with charge -40.0 nC is on the x axis at the point with coordinate x = 0. A second panicle, with charge -20.0 nC, is on the x axis at x = 0.500 in. (i) Is the point at a finite distance where the electric field is zero (a) to the left of .v = 0, (b) between x = 0 and x = 0.500 in, or (c) to the right of x m 0.500 in? (ii) Is the electric potential zero at this point? (a) No; it is positive, (b) Yes. (c) No; it is negative. (iii) Is there a point at a finite distance where the electric potential is zero? (a) Yes; it is to the left of x = 0. (b) Yes; it is between x = 0 and x = 0.500 in. (c) Yes; it is to the right of x = 0.500 in. (d) No.
(a) A small Styrofoam bead with a charge of -60.0 nc is at the center of an
insulating plastic spherical shell with an inner radius of 20.0 cm and an
outer radius of 34.0 cm. The plastic material of the spherical shell is
charged, with a uniform volume charge density of -1.50 pC/m³. A proton
moves in a circular orbit just outside the spherical shell. What is the
speed of the proton (in m/s)?
m/s
(b) What If? Suppose the spherical shell carries a positive charge density
instead. What is the maximum value the charge density (in µC/m³) the
spherical shell can have below which a proton can orbit the spherical
shell?
µC/m3
(c)
d) 2R
R.
R.
R.
Two uniform line charges of = 4n C/m each are parallel to the z-axis at (0, 4)m and (0,
-4)m. Magnitude of electric field at points (+4, 0, 0) is
(a) 9 V/m
(b) 18 V/m
C4.5 V/m
(d) 9/2 V/m
(a) A small polystyrene bead with a charge of -60.0 nC is at the center of an insulating glass spherical shell with an inner radius of 20.0 cm and an outer radius of 34.0 cm. The glass material of the spherical
shell is charged, with a uniform volume charge density of -1.70 µC/m3. A proton moves in a circular orbit just outside the spherical shell. What is the speed of the proton (in m/s)?
m/s
(b) What If? Suppose the spherical shell carries a positive charge density instead. What is the maximum value the charge density (in µC/m3) the spherical shell can have below which a proton can orbit the
spherical shell?
HC/m3
Chapter 25 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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