Someone help please 1 You are cycling along a flat road. a Are you moving up or down? b What is the force that is pulling you
1 answer:
Answer:
Explanation:
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Answer:
The capillary rise of the glycerin is most nearly
Explanation:
From the question we are told that
The diameter of the glass tube is
The density of glycerin is
The surface tension of the glycerin is
The capillary rise of the glycerin is mathematically represented as
substituting value
Therefore the height of the glass tube the glycerin was able to cover is
We can solve the problem by using the first law of thermodynamics:
where
is the change in internal energy of the system
is the heat absorbed by the system
is the work done by the system on the surrounding
In this problem, the work done by the system is
with a negative sign because the work is done by the surrounding on the system, while the heat absorbed is
with a negative sign as well because it is released by the system.
Therefore, by using the initial equation, we find