Friction or drag from immersion in a fluid damps the motion of an object attached to a spring, eventually bringing the object to rest. QUESTION In the case of friction, what percent of the mechanical energy was lost by the time the mass first reached the equilibrium point

Can anybody me with this? ? (picture included.)

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative