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The maximum and minimum distances of a c...

The maximum and minimum distances of a comet from the sun are `1.4 xx 10^(12) m and 7 xx 10^(10)` m. If is velocity nearest to the sun is `6 xx 10^(4) ms^(-1)`, what is the velocity in the fartest position ? Assume that path of the comet in both the instantaneous positions is circular.

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