The magnetic field at the center of a 1.40-cm-diameter loop is 2.50 mt . part a) what is the current in the loop?
part b) a long straight wire carries the same current you found in part a. at what distance from the wire is the magnetic field 2.50 mt ?

The car hoist allows the car to be driven onto the platform, after which the rear wheels are raised. if the loading from both rear wheels is 1380 lb, determine the force in the hydraulic cylinder ab. neglect the weight of the platform itself. member bcd is a right-angle bell crank pinned to the ramp at c. the force is positive if in tension, negative if in compression.

Determine the maximum r-value of the polar equation r =3+3 cos 0

You can decrease the resistance of a length of wire by