Chapter 13: Q19P (page 540)
If the particle in Figure 13.62 is a proton, and the electric field has the value localid="1656913137210" , what is the force on the proton?

Short Answer
The force exerted on proton is .
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Chapter 13: Q19P (page 540)
If the particle in Figure 13.62 is a proton, and the electric field has the value localid="1656913137210" , what is the force on the proton?

The force exerted on proton is .
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A particle with charge +1nC (a nanocoulomb is 1X10-9C) is located at the origin. What is the electric field due to this particle at a location ?
2 In the region shown in Figure 13.64 there is an electric field due to charged objects not shown in the diagram. A tiny glass ball with a charge ofplaced at location A experiences a force of, as shown in the figure. (a) Which arrow in Figure 13.65 best indicates the direction of the electric field at location A? (b) What is the electric field at location A? (c) What is the magnitude of this electric field? (d) Now the glass ball is moved very far away. A tiny plastic ball with chargeis placed at location A. Which arrow in Figure 13.65 best indicates the direction of the electric force on the negatively charged plastic ball? (e) What is the force on the negative plastic ball? (f) You discover that the source of the electric field at location A is a negatively charged particle. Which of the numbered locations in Figure 13.64 shows the location of this negatively charged particle, relative to location A?


In Figure 13.66 a proton at location A makes an electric field at location B. A different proton, placed at location B, experiences a force . Now the proton at B is removed and replaced by a lithium nucleus, containing three protons and four neutrons. (a) Now what is the value of the electric field at location B due to the proton? (b) What is the force on the lithium nucleus? (c) The lithium nucleus is removed, and an electron is placed at location B. Now what is the value of the electric field at location B due to the proton? (d) What is the magnitude of the force on the electron? (e) Which arrow in Figure 13.65 best indicates the direction of the force on the electron due to the electric field?
4 A sphere with radius is placed at a location near a point charge. The sphere has a charge of spread uniformly over its surface. The electric field due to the point charge has a magnitude of at the center of the sphere. What is the magnitude of the force on the sphere due to the point charge?
If the uniform upward-pointing, electric field depicted in Figure 13.44 has a magnitude of , what is the magnitude of the force on the electron while it is in the box? If a different particle experiences a force of when passing through this region, what is the charge of the particle?

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