Homework Statement
A light ray strikes the surface between two transparent materials as shown. Each angle is labeled with a letter. Give the letters for the angle of incidence, angle of refraction and angle of reflection, in that order
Homework Equations...
Homework Statement
A square loop of wire with a small resistance is moved with constant speed from a field free region into a region of uniform B field (B is constant in time) and then back into a field free region to the right. The self inductance of the loop is negligible...
ok well i don't remember how to find B with what is given to me. sorry. if you can just give me some equations i can do the work. not asking for u to do the work for me
Homework Statement
A 1000-turn loop (radius = 0.037m) of wire is connected to a (20 Ohm) resistor as shown in the figure. A magnetic field is directed perpendicular to the plane of the loop. The field points into the paper and has a magnitude that varies in time as B=gt, where g=0.25 T/s...
Homework Statement
Calculate the current i3 in the following configuration:
http://capa-new.colorado.edu/msuphysicslib/Graphics/Gtype57/prob06_kirch.gif
EMF_1 = 6 V
EMF_2 = 3 V
R_1 = 70 Ohm
R_3 = 20 Ohm
Homework Equations
I know that V=IR so I=V/R
but because there are 2...
Homework Statement
What is the resistance between terminals AC? What is the resistance between AD?
An underground telephone cable, consisting of a pair of wires, has suffered a short
somewhere along its length (at point P in the Figure). The telephone cable is L long,
and to determine...
Homework Statement
A number 16 copper wire has a diameter of 1.291mm. Calculate the resistance of a 43m long piece of such wire. Use rho=1.72x10-8 Ohm-m for the resistivity of copper. Use units of "ohm".
Homework Equations
R=pl/A
rho is the same thing as the p
The Attempt at a...
um...ya. so i just divided the r by 2. but u still have to make sure you are squaring it? post up ur numbers and stuff and what you get if you are still having trouble and ill see if i can help you out
In the previous problem, what is the magnitude of the charge on each particle?
the previous problem was
Two point-like particles are placed 14.8 cm apart and are given equal and opposite charge. The first particle, of mass 41.0 g, has an initial acceleration of 1.40 m/s2 towards the second...
Never mind I got it. i was using the right equation, lol i guess i did just enter a number in wrong. funny cause i did it like 10 times. thanks though tiny-tim