PLS HELP ILL MARK YOU BRAINIEST 3. A 57.0 kg diver dives from a height of 15.0 m. She reaches a speed of 14.0 m/s just
before entering the water. What was the average force of air resistance (e. g., friction)
acting on the diver?
Bonus: What is the force of friction underwater if she reaches a depth of 2.5 m before
stopping? Do not neglect the buoyant force of 500 N acting on the diver once underwater.

What’s #16 asking and how do i solve it?

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

Vi. on another planet, a spring with constant 4.7 n/m is set up and allowed to expand verticaly freely. 8.4kg mass is placed on the spring and the spring extends 5.28m. calculate the exected extension on earth.