Which science deals most with energy and
forces? sc.912.n.1.2
a. biology
c. botany
b. physics
d. agriculture

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

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