Consider hitting a golf ball with a golf club. if we call the force applied to the ball by the club the action force, identify the reaction force.
a. the centrifugal force in the swing
b. the force applied to the club by the hands
c. the force applied to the club by the ball
d. the force the ball carries with it in flight

The excretory system,need answers for all: )

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

What is another way to determine mass times acceleration?