The forces F1, F2, F3.-..., F, acting on an object are in the zero vector.
F1+F2 + F3+ ... + Fn = 0
The forces F1 = 71 - 4j and F2 = 31+ 2j are acting on an object.
a. Find the resultant force.
b. What additional force is required for the given forces to be in equilibrium?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.a city water tank holds 20 gallons of water. a technician empties 25% of the tank. how many more gallons of water must be removed from thetank so that it has 5 of the water that it started with: the technician must removemore gallons of water for the tank to have 5 of the water that it started with.