Given
The speed of light through a medium is
To find
The type of material
Explanation
The velocity through a medium is given by
where c is the speed of light in .
n is the refractive index of the material
Thus,
Thus the refractive index is 2.419
We know diamond has a refractive index of 2.417-2.419
Conclusion
The material is diamond
Answer:
See below:
Explanation:
What you have done seems to be correct, what we can do is just add a box into the center. For the 3rd question, we can just draw a box as nothing is happening. That is all!
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Answer:
Explanation:
Given
de Broglie wavelength = 0.20nm
Required
Determine the speed (v)
The speed is calculated using the following formula;
Where
Substitute these values in the above formula
-----------------------------------------------------
Convert 0.2nm to metre (m)
-----------------------------------------------------
Multiply both sides by v
Apply law of indices
Divide both sides by
Apply law of indices
Hence;
The velocity is
Answer:
D. An alloy of iron and carbon
Explanation:
Because iron and carbon are both pure substance.
Electric current is the movement of electrons through a wire. Electric current is measured in amperes (amps) and refers to the number of charges that move through the wire per second.