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Chapter 25: Q. 39 (page 711)
A +3.0 nC charge is at x = 0 cm and a -1.0 nC charge is at x = 4 cm. At what point or points on the x-axis is the electric potential zero?
The points are 3 cm and 6 cm
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An electron moves along the trajectory of from to.
Does the electric potential energy increase, decrease, or stay the same? Explain.
Is the electron's speed at greater than, less than, or equal to its speed at ? Explain.
Physicists often use a different unit of energy, the electron volt, when dealing with energies at the atomic level. One electron volt, abbreviated eV, is defined as the amount of kinetic energy gained by an electron upon accelerating through a 1.0 V potential difference. a. What is 1 electron volt in joules? b. What is the speed of a proton with 5000 eV of kinetic energy?
Reproduceon your paper. Then draw a dot (or dots) on the figure to show the position (or positions) at which the electric potential is zero.
An electric dipole consists of spheres charged to at the ends of a -long massless rod. The dipole rotates on a frictionless pivot at its center. The dipole is held perpendicular to a uniform electric field with field strength , then released. What is the dipole鈥檚 angular velocity at the instant it is aligned with the electric field?
shows three points near two point charges. The charges have equal magnitudes. For each part, rank in order, from most positive to most negative, the potentials to .
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