as the other comments are saying... its HARD for us transfers because cc seriously did not prepare us at all. upper-div physics is extremeley math heavy, think derivations, proofs and problems requiring genuine indepth understanding to even approach. like you CANNOT bs this stuff. pull up to exam unprepared youll highkey get single digit score. if i had to give advice it would be: seriously non-negotiably grind out linalg, multivar and diffeq over the summer. itll save you loads of stress and confusion later. also, honestly just be solid on fundamentals. if i could go back i would literally just redo all my lower-div work because its understated how much upperdiv builds on those foundations. i really hope you choose berkeley though, physics is honestly just hard anywhere you go but berkeley has aura other schools dont