__About the 1st exam__:

The exam will contain 10 multiple choice questions, and 6 problems requiring

calculation, explanation, and/or derivation. You may use a calculator and one

3"X5" card of handwritten equations.

__Topics to review for first exam__:

- CLASSICAL RELATIVITY

- vector addition of velocities

- def of inertial frame

- postulates

- good approx when v<<c

- EINSTEIN'S POSTULATES
- What are they?
- Why expect speed of light to be the same for all observers?

- LORENTZ TRANSFORMATIONS

- derived by assuming speed of light is same for both observers

- using eqns in calculations

- LENGTH CONTRACTION

- when one observer views proper length

- def of proper length

- using eqns (only contracted along dir of motion)

- TIME DILATION

- when one observer views proper time

- def of proper time

- using equations

- SIMULTANEITY

- is not absolute (unless two events also happen at same place)

- DOPPLER EFFECT

- derived by assuming speed of light is same for both observers

- using equations

- red shift/blue shift

- VELOCITY TRANSFORMATION

- using equations; along dir of v (x-axis) / perpendicular to v (y & z-axes)

- be careful of signs and distinguishing u, u', v

- RELATIVISTIC MOMENTUM, ENERGY, AND KINETIC ENERGY

- momentum and energy are conserved

- using equations

- why massive object cannot travel at speed c/ why light can
- PARADOXES
- TWIN PARADOX
- what is the paradox, how is it resolved?
- inertial vs non-inertial frame
- ORDER OF EVENTS
- cause and effect always separated by time-like interval (signal has time to get there)
- all observers observe cause 1st
- order of events may be different for different observers only if interval is space-like
- BARN PARADOX
- what is the paradox, how is it resolved?