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  3. 1. an oil drop with a mass of 2.48 x10^-15kg is ba

1. An oil drop with a mass of 2.48 x10^-15kg is balanced between two parallel, horizontal...

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Physics

1. An oil drop with a mass of 2.48 x10^-15kg is balanced betweentwo parallel, horizontal plates 1.7cm apart, maintained at apotential difference of 260 V. The upper plate is positive.Calculate the charge on the drop in coulombs and as a multiple ofthe elementary charge. Determine whether there is an excess or adeficit of electrons.

2. Two waves with equal speeds have frequencies of this wave is40 Hz. What is the ratio of their wavelengths?

3. A wave on a string has a frequency of 0.83Hz and a wavelengthof 0.56m. Determine the wavelength when a new wave of frequency0.45Hz is established on this string and the wave speed does notchange.

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