Three square metal plates A, B, and C, each 12.0 cm on a side and 1.50 mm thick, are arranged as in Fig. P24.67. The plates are separated by sheets of paper 0.45 mm thick and with dielectric constant 4.2. The outer plates are connected together and connected to point b. The inner plate is connected to point a. (a) Copy the diagram and show by plus and minus signs the charge distribution on the plates when point a is maintained at a positive potential relative to point b. (b) What is the capacitance between points a and b ? Figure P24.67
Three square metal plates A, B, and C, each 12.0 cm on a side and 1.50 mm thick, are arranged as in Fig. P24.67. The plates are separated by sheets of paper 0.45 mm thick and with dielectric constant 4.2. The outer plates are connected together and connected to point b. The inner plate is connected to point a. (a) Copy the diagram and show by plus and minus signs the charge distribution on the plates when point a is maintained at a positive potential relative to point b. (b) What is the capacitance between points a and b ? Figure P24.67
Three square metal plates A, B, and C, each 12.0 cm on a side and 1.50 mm thick, are arranged as in Fig. P24.67. The plates are separated by sheets of paper 0.45 mm thick and with dielectric constant 4.2. The outer plates are connected together and connected to point b. The inner plate is connected to point a. (a) Copy the diagram and show by plus and minus signs the charge distribution on the plates when point a is maintained at a positive potential relative to point b. (b) What is the capacitance between points a and b?
An electron is traveling through a uniform electric field. The field is constant and given by E=(2.00×10−11N/C) i^− (1.20×10−11N/C) j^. At t=0 , the electron is at the origin and traveling in the x direction with a speed of 2.20 m/s.
Part A) What is its position 2.50 s later? x= ? (in m)
Part B) y=?
A very long straight wire has charge per unit length 1.55×10−10 C/mC/m .
At what distance from the wire is the magnitude of the electric field equal to 2.46 N/CN/C ?
Use 8.85×10−12 C2/(N⋅m2)C2/(N⋅m2) for the permittivity of free space, and use π=3.14159π=3.14159.
A small, charged particle of mass 9.42 x 10-7g and charge +4.50 x 10-12C is sent toward a fixed metal sphere of radius 4.00cm and net charge of 8.50 x 10-8C.
(a) If the particle is moving with a speed of 12m/s when it is 32.0cm away from the center of the sphere, does the particle strike the sphere?
(b) If so, what is the particle’s speed just before hitting the sphere?
(c) If the particle does not strike the sphere, what is its closest distance to the sphere?
Chapter 24 Solutions
University Physics with Modern Physics (14th Edition)
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