4. Look at this picture and answer the questions:
a. Air can still be pumped into the inflatable mattress even when is fully inflated. State a property of air which allow this to take place.
b. In that case, will the mass of the inflatable mattress increase o remain the same after more air is pumped into it? Give a reason.
c. When the inflatable mattress is left under the sun for a few hours, it becomes firmer. Why?
Answers
Answer:
inflatable mattress float on water
Answer:
A. air pressure
B. the mass will increase.
C. Because of thermal radiation produced by sun on the mattress.
Explanation:
The inflation of the mattress will increase with air pressure. The higher air density will result in an increase in mass. There is a possibility that the firmness of the mattress will increase due to thermal energy.
the mass of the inflatable mattress will increase because of increased air density inside the inflatable mattress.
This scenario takes place when the container gets filled with more units of gas particles despite remaining the same size. According to the diagram , this results in less "free space" between each unit of gas particles, which has the effect of COMPRESSION.
because of thermal radiation by the sun the mattress will in get firmer and it will absorb the sun energy and finally get firmer.
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