In a hockey match, a hockey player notices a 1.5 kilogram puck coming in at a velocity of 11 meters per second to the right. The hockey player then applies a 17. Newton force to the right on the puck in
0.20 second. What is the speed of this puck now?

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?

Asmall grinding wheel has a moment of inertia of 4.0×10−5 kg⋅m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?