Answer:
The fastest thing in the whole universe is the speed of light in a vacuum (like outer space!), clocking in at a great 2.99 x 108 m/s. Light travels in waves, and we call this traveling propagation. Propagation of waves has both a speed and a direction, called the velocity. The velocity of light changes depends on the material it travels through.
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Answer:
the thickness of the film for destructive interference is 1 cm
Explanation:
We can assume that the radar wave penetrates the layer and is reflected in the inner part of it, giving rise to an interference phenomenon of the two reflected rays, we must be careful that the ray has a phase change when
* the wave passes from the air to the film with a higher refractive index
* the wavelength inside the film changes by the refractive index
λ = λ₀ / n
so the ratio for destructive interference is
2 n t = m λ
t = m λ / 2n
indicate that the wavelength λ = 2 cm, suppose that the interference occurs for m = 1, therefore it is thickness
t = 1 2/2 n
t = 1 / n
where n is the index of refraction of the anti-reflective layer. As they tell us not to take into account the change in wavelength when penetrating the film n = 1
t = 1 cm
So the thickness of the film for destructive interference is 1 cm
Metaphysics is the systematic inquiry into the nature of reality. This is a True statement.
<h3>What is metaphysics?</h3>
Metaphysics is defined as the branch of philosophy that deals with the nature of reality and how life started on earth.
The concept of metaphysics believes that what cannot be reached through objective studies of material reality can be studied.
There are three major categories of metaphysic that is being studied which include the following:
- Ontology or general metaphysics,
- Psychical or religious metaphysics, and
In conclusion, metaphysics is the systematic inquiry into the nature of reality because it questions reality outside of human sense of perception.
Learn more about philosophy here:
brainly.com/question/16999698
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Answer:
Single replacement
Explanation:
A reaction in which one element replaces a similar element is called single replacement. In this case, C is replacing A.
