Homework Statement
A conducting bar slides down without friction on a pair of conducting rails separated by distance d. Connected to resistor R and there magnetic field B directed upward, perpendicular to the ground over the entire region through which the bar moves.
1) find the current
2)...
Homework Statement
Since i only know the field direction, increasing go into page. Why the answer is C?
Why the answer "a" ?
The R and r on the pic is respected to what?
Homework Equations
The Attempt at a Solution
Right hand rule : finger tip = current
Thumbs = force
Palm = B
Or...
Homework Statement
A point particle of mass m and charge q(>0) approaches to a point particle Q(>0) at a fixed position. When the distance between the two particles is L, the speed of the moving particle is v. The permittivity of the vacuum is denoted as Epsilon0. Find the minimum distance...
Homework Statement
1. Homework Statement [/B]
The displacement y of standing wave that is obtained by a superposition of waves :
Y1 = 3 sin (2##\pi##(0.5t - 0 25 x))
Y2 = 3 sin (2##\pi##(0.5t + 0 25 x))
Homework Equations
Formula for standing waves
Y = 2Asinkx coswt
The Attempt at a Solution...