A ringing alarm clock is put under a glass jar. The air is slowly removed from the space around it. What will happen as the air is removed?
As the air is removed from the space around the ringing alarm clock, several things will happen:
1. The sound produced by the ringing alarm clock will gradually become fainter. This is because sound waves require a medium, such as air, to travel through. As the air is removed, there are fewer particles for the sound waves to propagate through, resulting in a decrease in volume.
2. The ringing alarm clock may eventually stop making any sound. As the air is further removed, reaching a near-vacuum state, the sound waves would have no medium to propagate through, leading to complete silence.
3. The pitch of the ringing alarm clock may change. While the volume decreases, the pitch might become higher or lower due to the change in the speed of sound in a reduced-density environment. However, the change in pitch may not be easily perceivable without sensitive equipment.
It's important to note that achieving a perfect vacuum is virtually impossible, as some residual air particles will always remain, but the effects described above would become more pronounced as the air is progressively removed.