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Sonja [21]
3 years ago
14

Kenya has a pile of salt on the counter. She uses a pinch of it for a meal. Which of the following physical properties of the sa

lt changes? 1.)Density 2.) Shape 3,) Solubility 4.)Thermal conductivity
Physics
1 answer:
Elodia [21]3 years ago
8 0

Answer:

The answer is shape.

Explanation: It says physical so it means the physical shape taking some of the salt would not change the density solubility or the Thermal conductivity

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Explanation:

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Answer:

3.2\times 10^{-7}\ m or 0.32 μm.

Explanation:

Given:

The radiations are UV radiation.

The frequency of the radiations absorbed (f) = 9.38\times 10^{14}\ Hz

The wavelength of the radiations absorbed (λ) = ?

We know that, the speed of ultraviolet radiations is same as speed of light.

So, speed of UV radiation (v) = 3\times 10^8\ m/s

Now, we also know that, the speed of the electromagnetic radiation is related to its frequency and wavelength and is given as:

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Now, expressing the above equation in terms of wavelength 'λ', we have:

\lambda=\frac{v}{f}

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