Reviewing Mechanics & EM for Modern Physics: Priority Topics

[diligence]

I'm taking Modern Physics in the spring semester (starts Jan 10). It's been over 5 years since I took Mechanics and EM. Which topics from these courses should I review in preparation for Modern Physics? I plan to review everything, however this will take me longer than the time available before next semester starts. So which topics should be my priority?

 

[Jack21222]

Waves will be important. If your Modern Physics class is anything like mine was this past semester, that's probably the biggest thing.