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Why is it necessary to change the balloon diameter to liters when find lung capacity?
Wiki User
∙ 12y ago
Lung capacity is a volume; you need the volume of the balloon which is measured in cubic centimetres (cm³).
If the balloon is a sphere with a diameter d which can be measured, then its volume can be calculated as:
volume = 1/6 × π × diameter³
Wiki User
∙ 8y ago
Wiki User
∙ 7y agoYou can find many copies of this experiment on Google in DOC, DOCX, and PDF formats. Here is one such site: classroom.misd.org/users/0211/Lung%20Capacity%20Lab.pdf(The classroom website will open a download box so you can save the file to your hard drive.)
This experiment uses a metric ruler to measure the expanded balloon, in centimeters (cm). However, lungs hold a volume of air. Lungs are not flat or one dimensional. So you use a graph to convert the measurement to liters.
Another way to think of this is to take a ZipLock Baggie and lay it on a table. Use the metric ruler to measure the flat baggie at its widest point. Write that number in cm. Now, put 1/2 of a peanut butter sandwich into the baggie and close it but leave the air inside the baggie. Lay it on the table again. You can see how the baggie has depth; it is no longer one dimensional. It is the same when you use your lungs to push air into a balloon in the longest breath you can muster. You need to change it the measurement to liters to show the amount of air you put into your balloon.
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Consider a balloon that is being inflated As the balloon increases in size the area of its surface increases Each time the balloon's diameter doubles what do you expect for the change in the area?
For any geometric figure, surface area is proportional to (linear dimensions)2 .As the balloon's diameter doubles, its area increases by the factor of (2)2 = 4 .
Why does the pressure outside the balloon decrease as it rises?
The pressure outside the balloon doesn't change when the balloon rises. By a balloon rising, I assume that air is being placed into the balloon. As the balloon fills with air, the pressure inside the balloon will increase. Since the balloon can stretch, the increasing pressure against its inner walls will cause it to rise, or more correctly put, expand. Eventually, the balloon will be stretched to its fullest capacity if more air is placed inside it. When it pops, the bang you hear is the high pressure of the atmosphere inside the balloon equalizing with the lower pressure of the atmosphere outside the balloon.
Is breaking a balloon a physical change?
Yes, it is a physical change. Nothing chemically changed about the balloon.
Is a broken balloon a physical or chemical change?
Physical, because the balloon did not have a change in its chemical composition when it broke.
What happens to the current carrying capacity of a conductor when you change the frequency from 50hz to 60hz?
The current caring capacity of a wire is based on the physical size of the wire. The larger the diameter of the wire the more amperage the wire is allowed to carry.
Is a bursting balloon a physical change?
no, bursting of balloons is a physical change as the only change that occurs that that the shape of the balloon changes . Coming out of air is not a chemical change.
Is breaking a balloon chemical change or physcial change?
It is a physical change.
Does the volume of something change if you change its shape?
No. (Squeeze a balloon.)
Is breaking a balloon a physical or chemical change?
physical change
Is a balloon breaking a physical or chemical change?
physical change
If you push on the sides of a filled balloon how does the gas pressure inside the balloon change?
Calucus
Is bursting a balloon a physical or a chemical change?
When thinking of a balloon, it's best to think of two different chemical compounds that do not mix, the balloon itself and air. What makes the balloon pop is that the pressure of the air exceeds the force of the chemical bonds of the balloon. In order for a chemical reaction to take place, you need to start off with one set of chemicals that become a new set of chemicals.However, when a balloon pops, no new chemicals are created. All that happens is that the electron bonds of the compound we know of as the balloon break.
