In terms of kg, m, and s, what is the unit for power

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

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?