Recent content by stphillips

Homework Statement Hey guys, I've got a question regarding energy lost from sliding downa ramp. Here's the situation: The expected distance for the ball to travel I calculated to be 151 cm, it actually only traveled 105 cm after leaving the ramp. We were asked to calculate the energy...

Why can't I use the formula X/L = lambda/d I have 3 of those variables its just when i solve i don't get the right answer :S I shouldn't have to solve for theta to solve this question Also, this was homework due like a week ago, now I just want to know the right answer so I know if I'm...

Okay so what is the right answer then =/ I got an answer it's just different from the textbook and i don't know why

I don't know theta in that eq'n though =/ I have 3 variables and i have an eq'n i just don't know why I am getting the wrong answer

Homework Statement Monochromatic light from a point source illuminates two parallel, narrow slits. The centres of the slip openings are 0.8mm apart. An interference pattern forms on a screen placed parallel to the plane of the slits and 49 cm away. The distance between two adjacent dark...

Homework Statement Heres the question: Two towers of a radio station are 4.00 x 10^2 m apart along and east-west line. The towers act essentially as point sources, radiating in phase at a frequency of 1.00 x 10^6 Hz. Radio waves travel at 3.00 x 10^8 m/s. a) In which directions is the...

Homework Statement 1) A driver is traveling at 25m/s when she spots a sign that reads "Bridge Out Ahead". It takes her 1.0 s to react and begin breaking. The car slows down at a rate of 3.0 m/s2. Luckily, she stops 5.0m short of the washed-out bridge. (a) How much time was required to...