Chapter 25: Q. 5 (page 709)
What is the potential energy of the electron-proton interactions in FIGURE EX25.5? The electrons are fixed and cannot move.
Short Answer
The potential energy of electron proton interaction is
Chapter 25: Q. 5 (page 709)
What is the potential energy of the electron-proton interactions in FIGURE EX25.5? The electrons are fixed and cannot move.
The potential energy of electron proton interaction is
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Get started for freeThe electric field strength is inside a parallel-plate capacitor with a spacing. A proton is released from rest at the positive plate. What is the proton’s speed when it reaches the negative plate?
Two positive point charges q are located on the y-axis at.
a.Find an expression for the potential along the x-axis.
b.Draw a graph of V versus x for . For comparison, use a dotted line to show the potential of a point charge 2qlocated at the origin.
A 2.0-mm-diameter glass bead is positively charged. The potential difference between a point 2.0 mm from the bead and a point 4.0 mm from the bead is 500 V. What is the charge on the bead?
Living cells “pump” singly ionized sodium ions, Na+, from the inside of the cell to the outside to maintain a membrane potential ∆Vmembrane = Vin - Vout = - 70 mV. It is called pumping because work must be done to move a positive ion from the negative inside of the cell to the positive outside, and it must go on continuously because sodium ions “leak” back through the cell wall by diffusion. a. How much work must be done to move one sodium ion from the inside of the cell to the outside? b. At rest, the human body uses energy at the rate of approximately 100 W to maintain basic metabolic functions. It has been estimated that 20% of this energy is used to operate the sodium pumps of the body. Estimate—to one significant figure—the number of sodium ions pumped per second.
An arrangement of source charges produces the electric potential V = 5000x2 along the x-axis, where V is in volts and x is in meters. What is the maximum speed of a 1.0 g, 10 nC charged particle that moves in this potential with turning points at 8.0 cm?
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