Pressure and volume of a gas are inversely related. As one goes up, the other goes down, and vice-versa.
I’m pretty sure one increases just straight up velocity and the other is kind of a deceleration
Electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire. One way to explore the direction of a magnetic field is with a compass, as shown by a long straight current-carrying wire in.
No the speed does not depend on its mass, yes to the second question and yes to the third
