why is clock oil used in millikan's experiment? can we use water in place of clock oil?
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4
Answer:
The experiment requires precise knowledge of the mass of the drop, which is calculated by measuring the terminal velocity of the drop and using Stokes’ equation for drag force. It should be obvious that it’s very important that the mass does not change during the experiment!
Other oils, with higher vapour pressures, evaporated too quickly in the heat of the lights used to illuminate the drops. Water would certainly have this problem.
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3
Answer:
no, we can't use water in it.
Explanation:
Because the intermolecular forces of water molecules is less than the oil.
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