College Physics Chapter 28

P'Cast 28-8 Measuring the Distance to a Galazy from Its Redshift

Balloon Art Concept Check Energy of a photon (22-26)
Balloon Art Concept Check Heisenberg uncertainty principle (28-7)
Balloon Art Concept Check The Hubble law (28-9)

Math Tutorial-1 Significant Figures
Math Tutorial-2 Equations
Math Tutorial-3 Direct and Inverse Proportions
Math Tutorial-4 Linear Equations
Math Tutorial-5 Quadratic Equations and Factoring
Math Tutorial-6 Exponents and Logarithms
Math Tutorial-7 Geometry
Math Tutorial-8 Trigonometry
Math Tutorial-9 The Dot Product
Math Tutorial-10 The Cross Product