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4 years ago

The diagra shows molecules in a fluid. Explain the

Physics

1 answer:

ankoles [38]4 years ago

7 0

Answer:

Check below for the answers and explanations.

Explanation:

Note: You did not provide the diagram you mentioned but I will explain to you the sequence of events that take place as a fluid cools. I believe you can apply this to the particular diagram that you have.

Sequence of events that take place as a fluid cools down:

There is a reduction in the temperature of the fluid

The speed of movement of the molecules will reduce

Since there is a reduction in speed, the Kinetic Energy also reduces. KE = 1/2 mv²
The density of the fluid will increase as the temperature decreases
The molecules will be closer to each other as opposed to in a gas where there is collision of molecules

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Answer:

The possible thickness of the soap bubble = $1.034\times 10^{-7}\ m.$

Explanation:

Given:

Refractive index of the soap bubble, $\mu=1.33.$
Wavelength of the light taken, $\lambda = 550.0\ nm = 550.0\times 10^{-9}\ m.$

Let the thickness of the soap bubble be $t$ .

It is given that the soap bubble appears very bright, it means, there is a constructive interference takes place.

For the constructive interference of light through a thin film ( soap bubble), the condition of constructive interference is given as:

$2\mu t=\left ( m+\dfrac 12 \right )\lambda.$

where $m$ is the order of constructive interference.

Since the soap bubble is appearing very bright, the order should be 0, as $0^{th}$ order interference has maximum intensity.

Thus,

$2\mu t=\left (0+\dfrac 12\right )\lambda\\t=\dfrac{\lambda}{4\mu}\\\ \ = \dfrac{550\times 10^{-9}}{4\times 1.33}\\\ \ = 1.034\times 10^{-7}\ m.$

It is the possible thickness of the soap bubble.

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