1. A small dust particle with a mass of 4.3 x 10-9 kg is suspended in a uniform electric field of 920 N/C [up]. a) Is the charge on the particle positive or negative? Explain. b) Determine the number of elementary charges involved with the charge on the particle.
1. A small dust particle with a mass of 4.3 x 10-9 kg is suspended in a uniform electric field of 920 N/C [up]. a) Is the charge on the particle positive or negative? Explain. b) Determine the number of elementary charges involved with the charge on the particle.
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![1. A small dust particle with a mass of 4.3 x 10-⁹ kg is suspended in a uniform electric field of 920 N/C
[up].
a) Is the charge on the particle positive or negative? Explain.
b) Determine the number of elementary charges involved with the charge on the particle.
2. An oil drop of mass 4.7 x 10-15 kg is suspended between two parallel plates with a potential
difference of 120 V and a separation of 5.0 mm between the plates.
a) What is the charge on the oil drop?
b) What number of elementary charges is required to get this charge?
3. When Millikan first performed the experiment, he used water droplets instead of oil. He found that he
could not suspend the droplets for any length of time. In fact, they would start to move up a short time
after they had been suspended. Why did the water droplets start to move up? Hint: Consider changes
of state.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6ee2be89-d0be-4696-8a18-a36a42075af4%2F3a1d8d22-fb82-4a69-9717-18dba8e61bac%2F7tvkp2_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. A small dust particle with a mass of 4.3 x 10-⁹ kg is suspended in a uniform electric field of 920 N/C
[up].
a) Is the charge on the particle positive or negative? Explain.
b) Determine the number of elementary charges involved with the charge on the particle.
2. An oil drop of mass 4.7 x 10-15 kg is suspended between two parallel plates with a potential
difference of 120 V and a separation of 5.0 mm between the plates.
a) What is the charge on the oil drop?
b) What number of elementary charges is required to get this charge?
3. When Millikan first performed the experiment, he used water droplets instead of oil. He found that he
could not suspend the droplets for any length of time. In fact, they would start to move up a short time
after they had been suspended. Why did the water droplets start to move up? Hint: Consider changes
of state.
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