Calculate the period of a ball tied to a string of length 1.52 m making 2.5 revolutions every

second. Answer in units of s. Your answer must be within ± 2.0%

Calculate the speed of the ball.
Answer in units of m/s. Your answer must
be within ± 2.0%

You get 6 for mechanical

One splits the atoms and molecules  the other combines them

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

  bv hb ouj bv gv gtrxr