CBSE Class 12-science Answered
14th sum plz
Asked by lovemaan5500 | 20 Aug, 2019, 05:10: PM
Expert Answer
Let r denotes the radius of the raindrop after t minutes.
radius is decreasing as the rate of change of r must be negative.
Let V be the volume of the raindropand S be its surface area.
Integrating we get
r = -kt + c
At time t = 0 and radius is r0
r0 = c
r = -kt + r0
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