Problem #1: You are rowing a boat downstream at 12 km/hr. If the velocity of the river is 10 km/hr downstream, then how fast are you actually going?

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

Most of the volume of an atom is occupied by the

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)