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!

Um vetor representa um deslocamento cujo módulo é 20 m. se v faz um ângulo de 60 graus com a horizontal, qual é o valor das componentes horizontal e vertical deste vetor?

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)

Astate of matter all that has define volume and can flow is a(n)