A drop of liquid of diameter 2.8 mm breaks up into 126 ident... — Physics | Mockzy

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A drop of liquid of diameter 2.8 mm breaks up into 126 identical drops. The increase in energy is nearly equal to (If surface tension = 75 dynes/cm):

Zero

19 erg

46 erg

74 erg

An object of mass 5 kg falls from rest through a vertical distance of 20 m and r

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