As the pressure on a sample of gas increases, the volume of the sample _____. decreases stays the same increases
2 answers:
Answer : As the pressure on a sample of gas increases, the volume of the sample decreases.
Explanation :
According to the Boyle's, law, the pressure of the gas is inversely proportional to the volume of gas at constant temperature and moles of gas.
(At constant temperature and moles of gas)
From the we conclude that the higher the pressure of gas, lower will be the volume and lower the pressure of gas, higher will be the volume of gas.
Hence, as the pressure on a sample of gas increases, the volume of the sample decreases.
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Answer:
A. 3.3 m
Explanation:
Here, we have to use conservation of energy principle.
When the ball is at maximum height, the instantaneous velocity at that point is 0 m/s. So, the kinetic energy of the ball is also 0 at the maximum height. Thus, at maximum height, the energy possessed by the ball is gravitational potential energy only.
Now, when the ball reaches the ground, all the gravitational potential energy changes into kinetic energy because of the conservation of energy.
Therefore, the energy transformation can be given as:
Decrease in potential energy = Increase in Kinetic energy
Decrease in potential energy is given as:
Increase in kinetic energy is given as:
Therefore,
Now, plug in 8 for , 9.8 for
and solve for height
. This gives,
Therefore, the maximum height reached by the ball is 3.3 m.