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Question #4: Tiny droplets of oil acquire a small negative charge while dropping through a vacuum (pressure = 0) in an experiment. An electric field...
Question #4:
Tiny droplets of oil acquire a small negative charge while dropping through a vacuum (pressure = 0) in an experiment. An electric field of magnitude 6.00 104 N/C points straight down.
(a) One particular droplet is observed to remain suspended against gravity. If the mass of the droplet is 3.75 10-12 kg, find the charge carried by the droplet.
_____________C
(b) Another droplet of the same mass falls 8.4 cm from rest in 0.250 s, again moving through a vacuum. Find the charge carried by the droplet.
_____________ C
EXERCISE
Suppose a droplet of unknown mass remains suspended against gravity when Ey = -3.00 105 N/C. What is the minimum mass of the droplet? (Take the +y direction to be upward.)
____________ kg
