Charge is distributed uniformly along a long straight wire. The electric field 2.00 cm from the wire is 20.0 NC/ directed radially inward towards the axis of symmetry. The linear charge density on the wire is

So what is the question

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.

Idont understand the question

It indicates no change in temperature and the process of matter changing its state