Rates of Change Question (1 Viewer)

[Shuuya]

MX1 HSC 2013 Question 13 b) (ii)

Can't remember how to do these :/

Thanks!

 

[Shuuya]

^ I meant 13 a) (ii), can't seem to edit my post lmao

 

[trecex1]

I think you can just integrate dr/dt to find an expression for r in terms of t with initial conditions (find what r is initially given V initially is 10^-6) Then set r=0 for when it's completely evaporated and solve for t.

 

[KingOfActing]