Underline the correct words to complete the sentences: Figure 3 shows a gas inside a container fitted with a piston. When you press the piston inwards, the force of the gas on the piston points (towards/against) the direction of the piston's displacement. This means that the work done by the gas on the piston is (positive/negative). From Newton's third law, it follows that the work done by the piston on the gas is (positive/negative). From the work-kinetic energy theorem, it follows that the kinetic energy of the gas (increases/decreases), and the molecules on the gas (speed up/slow down). Since the internal energy of the gas includes the kinetic energy of its molecules, the internal energy of the gas (increases/decreases). Ubefore Motion of niston

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Underline the correct words to complete the sentences: Figure 3
shows a gas inside a container fitted with a piston. When you
press the piston inwards, the force of the gas on the piston
points (towards/against) the direction of the piston's
displacement. This means that the work done by the gas on the
piston is (positive/negative). From Newton's third law, it
follows that the work done by the piston on the gas is
(positive/negative). From the work-kinetic energy theorem, it
follows that the kinetic energy of the gas (increases/decreases),
and the molecules on the gas (speed up/slow down). Since the
internal energy of the gas includes the kinetic energy of its
molecules, the internal energy of the gas (increases/decreases).
Ubefore
Motion of
piston
Vafter
Figure 3. A gas inside a container fitted with a piston.
The piston is pressed inwards. (taken from Young &
Freedman, 2012)
Transcribed Image Text:Underline the correct words to complete the sentences: Figure 3 shows a gas inside a container fitted with a piston. When you press the piston inwards, the force of the gas on the piston points (towards/against) the direction of the piston's displacement. This means that the work done by the gas on the piston is (positive/negative). From Newton's third law, it follows that the work done by the piston on the gas is (positive/negative). From the work-kinetic energy theorem, it follows that the kinetic energy of the gas (increases/decreases), and the molecules on the gas (speed up/slow down). Since the internal energy of the gas includes the kinetic energy of its molecules, the internal energy of the gas (increases/decreases). Ubefore Motion of piston Vafter Figure 3. A gas inside a container fitted with a piston. The piston is pressed inwards. (taken from Young & Freedman, 2012)
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