A worker is holding a filled gas cylinder still. Which two sentences are true about the energy of the filled gas cylinder?
2 answers:
Answer:
B .It has gravitational potential energy because of its height.
C .Its atoms and molecules have thermal energy.
Explanation:
B. The cylinder has gravitational potential energy; in fact, this is given by
where m is the mass of the cylinder, g is the gravitational acceleration and h is the heigth of the cylinder above the ground. Since the height h is different from zero, it means that the GPE is different from zero.
C. The gas inside the cylinder has thermal energy, because its atoms and molecules constantly move (they have a random motion called Brownian motion), and this kind of energy due to the motion of molecules is called thermal energy.
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