Physics

In the attached figure, ABCD is a conducting wire. A conducting bar EF is laid on top of the wire and slid toward BC with a speed of .030 m/sec. A constant magnetic field B of 2.0*10^(-5)Tesla points out of the paper. The length of BC is 1.5m and the distance of the bar from EF is initially 2.0m. 1)what is the initial magnetic flux through the rectangle formed by the conducting wire and the bar? 2) what is the magnetic flux after 2.0 seconds? 3) what is the induced emf in the conducting wire and bar? 4) if the resistance of the wire and the bar together is 2.5 ohms, what current flows through the wire and bar?

Electric dipole of two opposite point charges

An electric dipole is constructed out of two point charges of equal magnitude q and opposite signs, separated by a distance d, as shown in the attached diagram. Find the electric field at the point P. (the two charges are each a distance r from point P).

Old exam for physics

please complete the attached physics exam. This exam will be used for study purposes so FULL explanations will be greatly appreciated.

review problems

These are some review problems posted by our instructor. I would like to know if my results are correct. please solve with short explanation if possible. The first part of the first problem states that each wire is at a distance r = 72.4 cm from the other two, and each wire carries a current of magnitude i = 5.76 A in the directions shown.

magnetic field problem

would like to know how to solve it. The magnetic field problem includes #'s 7,8,9,10,11