Under what conditions would a rope remain in equilibrium during a tug of war? a) when there is no force acting on the rope. b) when the net force acting on the rope is zero. c) when the forces acing on the rope are unbalanced. d) when the forces are equal in magnitude and direction.

The rope is in equilibrium when either there is no force acting on the rope (A) or when the net force acting on the rope is zero (B).  

potential energy is directly proportional to height.

more height = more potential energy.

greatest increase in height = greatest increase in potential energy

where are the points with the greatest increase in height ?

has to be c-e or d-e .

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27