Sarah walks to school. 1.5 miles in 30 minutes

Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors

Cathy is pedaling down a steep hill on her bicycle and wants to be able to coast up the next hill, which is 25 meters high, without pedaling. cathy and her bicycle have a mass of 75 kg. assuming her bicycle is 100% efficient, what would her speed have to be?

With physics question #5? for any !