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in Physics by (67.7k points)
A particle of mass m, moving in a circle of radius R, has a velocity `v=v_(0)(1-e^(-gamma t))` The power delivered to tha particle by the force at `t=0` is
A. `mv_(0)^(2)gamma`
B. `2mv_(0)^(2)gamma`
C. `-2mv_(0)^(2)gamma`
D. `-mv_(0)^(2)gamma`

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