Recent content by 123456

Homework Statement A logo is embedded in a block of glass (n=1.52), 3.2cm beneath the top surface of the glass. The block is put under water so that there is 1.5cm of water above the top surface of the glass. The logo is viewed from directly above by an observer in air. How far beneath the...

OK, I think I understand a little more. Thanks so much for helping me!

Oh! So, Vac = 25/65 = 0.38c and Vcb = 35/65 = 0.58c So, plugging in: 0.38c+0.54c / 1 + (0.38c)(0.54c)/c^2 = 0.71c, so truck is traveling 49m/s relative to the car? That makes more sense, because it would seem to be traveling faster than it actually is when viewed from the car's frame. Is that...

Homework Statement You are driving down a two-lane highway and a truck in the opposite lane travels toward you. Suppose the speed of light in a vacuum is 65 m/s. Determine the speed of the truck relative to you when a - your speed is 25 m/s and the truck's speed is 35 m/s and b - your...