On second thought, no actually. Truthfully I doodled that after looking at some the book's pictures of light bouncing off a droplet.
Is this better? It looks like it makes more sense this time around.
Homework Statement
Light consisting of a mixture of red and blue light enters a 40°, 70°, 70° prism along a line parallel to the side opposite the 40° vertex. The index of refraction of the prism material for blue light is 1.530, and for red light it is 1.525. What is the angle between the two...
I imagined the speaker on the ground, and then imagine the 'sphere' of sound in all directions. I didn't see it as a full sphere, so I thought the first equation wasn't right. Then I guessed it might just be a circle.
Homework Statement
A speaker emits sound waves in all directions, and at a distance of 28 m from it the intensity level is 73 db. What is the total power put out by the speaker, in watts? ( reference intensity I_{0} is 1.0 × 10-12 W/m2.)
Homework Equations
P= I*A
I = I_{0}*10^{B/10}
SA =...
I think I got it now after doing some thinkingAt the bottom, only the weight matters, right? so T = m1*g
At the middle, we have the weight and half(?) the cord so T = g*(m1 + 0.5m2)
At the top, we have the weight and full-cord so T = g*(m1 + m2)
Then I can solve for the respective wave...
Homework Statement
A hanging cord is attached to a fixed support at the top and is 78.0m long. It is stretched taut by a weight with mass 21.0kg attached at the lower end. The mass of the cord is 2.20kg . A device at the bottom oscillates the cord by tapping it sideways (Do not neglect the...