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Chapter 13: Q17P (page 540)
The electric field at a particular location is measured to be . What force would a positron experience if placed at this particular location?
The electric force experienced by positron is .
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The dipole moment of the HF (hydrogen fluoride) molecule has been measured to . If we model the dipole as having charges of +eand -e separated by a distance s, what is s ? Is this plausible?
You make repeated measurements of the electric fielddue to a distant charge, and you find it is constant in magnitude and direction. At timerole="math" localid="1656916621351" your partner moves the charge. The electric field doesn鈥檛 change for a while, but at timeyou observe a sudden change. How far away was the charge originally?
Consider Figure 13.59. Assume that the dipole is fixed in position. (a) What is the direction of the electric field at location A due to the dipole? (b) At location B? (c) If an electron were placed at location A, in which direction would it begin to move? (d) If a proton were placed at location B, in which direction would it begin to move? (e) Now suppose that an electron is placed at location A and held there, while the dipole is free to move. When the dipole is released, in what direction will it begin to move?
A dipole is located at the origin, and is composed of charged particles with charge +e and -e, separated by a distance 2x10-10 along the axis. (a) Calculate the magnitude of the electric field due to this dipole at location . (b) Calculate the magnitude of the electric field due to this dipole at location .
Two identical permanent dipoles, each consisting of charges +qand -qseparated by a distance s, are aligned along the xaxis, a distance rfrom each other, where(Figure 13.75). Show all of the steps in your work, and briefly explain each step. (a) Draw a diagram showing all individual forces acting on each particle, and draw heavier vectors showing the net force on each dipole. (b) Show that the magnitude of the net force exerted on one dipole by the other dipole is this:
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