for the first one, do we just get the magnetic field total? This is what i did.
Btotal = B1 + B2
B1 = MoI/2IIr ---> [(1.26X10^-6)(5)/(6.28)(15)
B2 = MoI/2IIr ---> [(1.26x10^-6)(5)/(6.28)(0.05)
Is that right?
for the second one, I calculated magnetic field first. Then, used this equation...
1. Two parallel wires 0.200 m apart carry currents in opposite directions of 5.00 A. Find the
magnetic field between the wires 0.0500 m from one of them and 0.150 m from the other.
2. A long straight wire carries a current of 100. A.
a. What is the force on an electron traveling parallel to...
i really have no clue how to do these. they seem more conceptual. any hints would be welcome! thanks!
1. Prove that when n identical resistors of resistance R are connected in parallel the equivalent resistance is R/n.
2. A piece of copper wire of resistance R is cut into 3 equal parts...
1) A 1.0-kg object moving in a certain direction has a kinetic energy of 2.0 J. It hits a wall and comes
back with half its original speed. What is the kinetic energy of this object at this point?
Attempt at solution: 1/2mv^2 = 1/2m(0.5)v^2
2)
An object of mass 10.0 kg is released from the...
1)
A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together. What is the speed of the wreckage just after the collision?
Relevant equations: m1v1 - m2v2 = (m1+ m2) vfinal
My attempt: This is an inelastic collision because the...