select all the correct answers. a worker is holding a filled gas cylinder still. which two sentences are…

select all the correct answers. a worker is holding a filled gas cylinder still. which two sentences are true about the energy of the filled gas cylinder? it has no energy because its being held still. it has gravitational potential energy because of its height. its atoms and molecules have thermal energy. it has motion energy because it will fall if let go. its kinetic energy is being converted to potential energy.

select all the correct answers. a worker is holding a filled gas cylinder still. which two sentences are true about the energy of the filled gas cylinder? it has no energy because its being held still. it has gravitational potential energy because of its height. its atoms and molecules have thermal energy. it has motion energy because it will fall if let go. its kinetic energy is being converted to potential energy.

Answer

Explanation:

Step1: Analyze gravitational - potential energy

The gas cylinder is at a certain height above the ground while being held. Gravitational potential energy is given by $U = mgh$ (where $m$ is mass, $g$ is acceleration due to gravity, and $h$ is height). So, it has gravitational potential energy because of its height.

Step2: Analyze thermal energy

The atoms and molecules in the gas inside the cylinder are in constant random motion. Thermal energy is related to the kinetic - energy of these atoms and molecules. So, its atoms and molecules have thermal energy.

Step3: Analyze kinetic and motion energy

Since the cylinder is held still, it has no motion energy (kinetic energy $K=\frac{1}{2}mv^{2}$, and $v = 0$ as it is stationary). Just the fact that it will fall if let - go does not mean it has motion energy currently. Also, there is no conversion of kinetic energy to potential energy as it is not in motion. And it definitely has energy in the form of potential and thermal energy, so it is not correct to say it has no energy.

Answer:

It has gravitational potential energy because of its height. Its atoms and molecules have thermal energy.