Sandy takes a glass jar filled with clear paint and adds a few pinches of sand into it. She then uses a paint mixer to vigorously shake the jar, mixing the sand uniformly in it. When the jar is held to the light, the sand is evenly distributed throughout. What is this an illustration of?
A.
Hubble's Law
OB
a singularity
the Big Bang theory
O c.
OD
the cosmological principle
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The answer is  a.first and third quarters 

If its history of, then b) because a) implies only present day (now)

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