Two long straight parallel wires are separated by a distance 2a. If the wirescarry an equal currentIin opposite directions, what is the magnetic fieldin the plane of the wires at a point i) midway between them and
ii) at adistanceafrom one and 3a from the other?
a. μ0i/2 πa
b. (μ0i/2 πa)+(μ0i/4 πa)
c. (μ0i/2 πa)--(μ0i/4 πa)
d. μ0i/3 πa

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?