Recent content by Raquel Aduriz

  1. R

    Spherical raindrop, mass, radius, and time

    I got it! Can't believe I forgot about the chain rule. Thank you so much for your help!
  2. R

    Spherical raindrop, mass, radius, and time

    Yes, but a few years ago so maybe I've forgotten something key. So I have C*r*dt=ρ*4*π*dr. Is that correct?
  3. R

    Spherical raindrop, mass, radius, and time

    Alright, so I have M=ρ(4/3)πr3. What exactly do I do with this? Take the derivative and set it equal to the other? Sorry, I'm sure I'm missing something really obvious.
  4. R

    Spherical raindrop, mass, radius, and time

    Ok... I guess I don't really understand how to do that. Can I do that using just the M equation, or do I need something else?
  5. R

    Spherical raindrop, mass, radius, and time

    Homework Statement Separate variables and integrate to find an expression for r(t), given r0 at t=0 Homework Equations M=ρ(4/3)πr3, thus V=(4/3)πr3 dM/dt=Cr3 where C is a constant The Attempt at a Solution ∫dM=∫Cr3dt M+constant=?? I have no idea how to integrate r because it's a...