What does it mean for a system to be in dynamic equilibrium? (2 points) Select one:
a. The rate of the forward reaction equals the rate of the backward reaction.
b. The concentration of products decreases.
c. The overall rate of the reaction slows down.
d. The temperature of the system is stable.

An investigator needs a uniform 30 mt field, which she intends to produce with a solenoid. she takes a long 10-cm-diameter tube and wraps wire along the length of it, wrapping 1200 turns of wire along a 75-cm length of the tube. how much current must she pass through the wire to produce the desired field?