Which of these do you think follows this step? Turn the bottles over so the one on top holds the water. Quickly swirl the bottles in a big circle several times and place the bottom bottle on a flat surface. a. Next, repeat this step and then set the bottle down again. c. Flip the bottle upside down and swirl it several times b. When you stop, the water should start swirling down in a tornado-shaped funnel. d. none of these

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j

The answer is  the potential energy of the bob at position b is 1.47 joules.if the maximum height of the bob is 0.45 meters when it swings back,1.323   joules of energy was transformed to thermal energy.hope this