actually official solution doesnt exist
i think its like dr/dt = K
use
dV/dt = C .r2 as change in volume is prop to surface area
An effervescent tablet is dropped in water. Determine its size as a function of time.
source:ORTVAY RUDOLF
PROBLEM SOLVING COMPETITION IN PHYSICS
1997
sorry posted in wrong secction...but plz tell me how to start this...
i m not quite sure of this, but this may be related to rate of change of Surface area...also, since s.a. goes on decreasing with time, the rate of dissapearance will keep on decreasing
is this of ny help?
actually official solution doesnt exist
i think its like dr/dt = K
use
dV/dt = C .r2 as change in volume is prop to surface area
yeah cele i know that official soln dont exist for this competition and they would never be available in future toooooo.........
but i cant understand ur statement.. dr/dt = K [7][7]