An infinitely long straight wire lying in the 2 direction carries a current i in the frame a. let r be the radius of the wire and assume that the current i distributes uniformly inside the wire. (a)find the current density j inside the wire. what is the four current ju? (b)if the charge density of the charge carriers inside the wire is p, find the drift velocity v for charge carriers. (c)consider an observer b that moves with the velocity v in the z direction. find the four current in frame b. (d)find both the electric and magnetic field in frame b.

Now that the first three steps have been explained, identify the next three steps, in order. calculate the magnitude of r sum vector components calculate a and b magnitudes calculate the direction of r, calculate x, y components step 4 step 5 step 6

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds