3. Two neutral metal spheres on wood stands are touching. A negatively charged rod is held directly above the top of the left sphere, not quite touching it. While the rod is there, the right sphere is moved so that the spheres no longer touch. Then the rod is withdrawn. Afterward, what is the charge state of each sphere? Use charge diagrams to explain your answer.
3. Two neutral metal spheres on wood stands are touching. A negatively charged rod is held directly above the top of the left sphere, not quite touching it. While the rod is there, the right sphere is moved so that the spheres no longer touch. Then the rod is withdrawn. Afterward, what is the charge state of each sphere? Use charge diagrams to explain your answer.
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![1. When a nearby charged object causes a change in the distribution of charge on a neutral object, this is
called an induced charge separation. Is it possible to create an induced charge separation on an
insulator? On a conductor? Explain your answers.
2. The leaves of an electroscope will repel each other if you touch the electroscope with a positively
charged glass rod. Use a series of charge diagrams to explain what happens and why the leaves repel
each other.
3. Two neutral metal spheres on wood stands are touching.. A negatively charged rod is held directly
above the top of the left sphere, not quite touching it. While the rod is there, the right sphere is moved
so that the spheres no longer touch. Then the rod is withdrawn. Afterward, what is the charge state of
each sphere? Use charge diagrams to explain your answer.
4. Two identical metal spheres have different charges. One has a charge of +10 C and the other has a
charge of -20 C. If the spheres are allowed to touch each other for a time and then are moved away
from each other, what is the final charge on each sphere? Explain
5. A 1.8 g (0.0018 kg) pith ball is suspended from a thread and placed in an
electric field. When placed in the electric field, the pith ball is deflected to
the left so that the thread makes a 9.5° angle with the vertical. Calculate the
electrostatic force on the pith ball. (0.003 N)
Charged rod
Coulomb's Law and Electric forces
6. In a hydrogen atom, an electron is 5.29 x 1011m from a proton. An electron has a charge of -1.60 x 10
C, and the proton's charge is +1.60 x 1019 C. Calculate the electrostatic force of attraction acting on
the two charges. (8.22 x 10-8 N [attraction])
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Transcribed Image Text:1. When a nearby charged object causes a change in the distribution of charge on a neutral object, this is
called an induced charge separation. Is it possible to create an induced charge separation on an
insulator? On a conductor? Explain your answers.
2. The leaves of an electroscope will repel each other if you touch the electroscope with a positively
charged glass rod. Use a series of charge diagrams to explain what happens and why the leaves repel
each other.
3. Two neutral metal spheres on wood stands are touching.. A negatively charged rod is held directly
above the top of the left sphere, not quite touching it. While the rod is there, the right sphere is moved
so that the spheres no longer touch. Then the rod is withdrawn. Afterward, what is the charge state of
each sphere? Use charge diagrams to explain your answer.
4. Two identical metal spheres have different charges. One has a charge of +10 C and the other has a
charge of -20 C. If the spheres are allowed to touch each other for a time and then are moved away
from each other, what is the final charge on each sphere? Explain
5. A 1.8 g (0.0018 kg) pith ball is suspended from a thread and placed in an
electric field. When placed in the electric field, the pith ball is deflected to
the left so that the thread makes a 9.5° angle with the vertical. Calculate the
electrostatic force on the pith ball. (0.003 N)
Charged rod
Coulomb's Law and Electric forces
6. In a hydrogen atom, an electron is 5.29 x 1011m from a proton. An electron has a charge of -1.60 x 10
C, and the proton's charge is +1.60 x 1019 C. Calculate the electrostatic force of attraction acting on
the two charges. (8.22 x 10-8 N [attraction])
19
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