Which statements about observations and inferences are correct? Select all that apply. A. Inferences can never be proven.
B. Inferences are always based on observations.
C. Something that is commonly known is always an observation.
D. Information obtained using a tool is not an observation.
E. Inferences may be true or false.
F. Observations are always made using the five senses.
G. Scientists use observations to explain how things work.

For me a person with a phd and who knows what there talking about.i know the chances of a radiation leak is low but if it does the area within a 96.3 mile radius would be unusable because of contamination

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