You are trying to move a chair of mass 29.0 kg by pushing it 30* below horizontal, but it is not sliding very easily. the coefficient of kinetic friction between the chair and the floor is 0.625 and the resistive force is 283.6n. (a) what is the normal force? (b) what is the value of the angled force that will keep the chair moving at a constant velocity?

Could someone me find the answer to this problem.

What is a good example of instantaneous speed

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