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Lectures
Lecture: 28 (iq25)
1. Power: Energy/time
o Power=F½v. Example: Vehicle engine
o Powerinput =dKinput/dt. Example:
Niagara fall
2. Dissipative force:
o Terminal velocity
o Air resistance: Falling of
coffee filters
o Irreversible work and
non-conservative force
3. Photon:
o M=0, v=c
o em spectrum
4. H-atom
o Energy levels
o Electron excitations
o Emission
o Absorption (dark lines)
Announcement:
o Reminder: Office hours WF
3-4, other time by appointment.