Answer:
A simple machine consisting of an axle to which a wheel is fastened so that torque applied to the wheel winds a rope or chain onto the axle, yielding a mechanical advantage equal to the ratio of the diameter of the wheel to that of the axle.
The right answer would be
-20t+ 80
I believe it’s B. Electrons
From the diagram we have that
Therefore the direction is 30° from east of south