[Solved] Find a vector that is perpendicular to the plane passing through the three given points. \(P ( 3,0,1 ) , Q ( 0,2 , - 5 ) , R ( - 2,0,5 )\) Labile Surface: An unstable or changeable surface used in training and rehabilitation to improve balance and muscle strength. Body-Weight Exercise: Exercises that use the weight of the body as resistance. Isokinetic Training: A form of strength training using machines that ensure muscle contraction at a constant speed regardless of the force exertion. Muscle Contraction: The process of muscle fibers shortening or tensing, leading to movement or the exertion of force.