Air is forced through the water to remove gases is called?

What is the magnitude of the resultant vector round your answer to the nearest tenth

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)