Recent content by Granite

Okay. So, for part (c), I thought of integrating the change in radius function with respect to time, which can then be rearranged to a function that tells you time for a specific radius (treated it as integration of a constant). Can anyone tell me if this logic is flawed?

Homework Statement Imagine a planetesimal sweeping up small particles from a dust cloud. Suppose the planetesimal, of mass M and radius R, is moving through the cloud at a velocity v. There are nd dust particles per m3, each of mass md (a) Derive an expression for the number of collisions per...

Ah. Yeah. I don't know where my mind was at...but I determined the solution. Thanks. Consider this question SOLVED.

QUESTION: R1 = 2 ohm R2 = 5 ohm What value of R3 maximizes the dissipation rate in resistance 3? (battery is ideal -> no internal resistance) DIAGRAM: _______________ |...|...| R1...R2...R3 |...|...| _ +...|...| - -...|...| |...|...| _______________ Someone posed this question...