The illustration shows a rollercoaster add indicates four different positions the car might be at as it moves along the track. If friction weren’t a factor and no energy was lost, at which point in the rollercoaster journey is its potential energy the greatest? Choices:

A: W
B: X
C: Y
D: Z

Please help!

The potential in a region between x = 0 and x = 6.00 m is v = a + bx, where a = 14.0 v and b = -7.30 v/m.

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?