Answer:
I don't know what do u. mean
Answer:
The act of using senses or tools to gather information is called <em>Obser</em><em>vation</em><em>.</em>
The railroad tracks will expand because the heat waves make them bigger
since centripetal acceleration is always towards the center of the circle
so at the given position where speed and acceleration is given the center coordinate will be towards the center of circle
also we know that



so the coordinates of the center will be


so the coordinate is (3.20 m, 4.04 m)
The answer is D using the work formula
W= F•d but if it was against gravity, it would be 0 if gravity is exerting the same amount, I would pick D using the formula, but I'm not so sure sorry