Answer:
A) Light is made up of waves.
Explanation:
Light is a form of electromagnetic waves.
Electromagnetic waves consist of electric and magnetic fields that oscillate periodically in a plane perpendicular to the direction of motion of the wave, therefore they are transverse in nature.
All electromagnetic waves travel in a vacuum at the speed of light:

Moreover, electromagnetic waves are classified into 7 different types depending on their frequency and wavelength. From lowest to highest frequency (and so, from longest to shortest wavelength), we have:
Radio waves
Microwaves
Ultraviolet
Visible light
Infrared
X-rays
Gamma rays
Visible light is part of this electromagnetic spectrum, and corresponds to the part of the electromagnetic waves that our eye is able to see. In particular, we perceive waves of different wavelength and frequency as different colors: for instance, violet/blue light corresponds to the shortest wavelength that we can see, while red light corresponds to the longest wavelength that we are able to see.
Also, for visible light wave we can describe their brightness, which corresponds to the intensity of the wave, which is a property of all waves.
So the correct answer is
A) Light is made up of waves
The impact of feudalism on American exploration is that Feudalism was said to be a system that brought about local administrative control and the also the sharing of land into units.
<h3>What was the impact of the feudal system?</h3>
The effect of the feudal system was that It brought about the formation of a well localized groups of communities that is said to be owed loyalty to a given local lord who is known to often exercised total authority in his domain.
The Age of Exploration is known to be due to the effect of ideas, technology, plants, and also that of animals that are said to be exchanged all over the world. The Age of Exploration is known to be a factor that lead to the origins of modern capitalism.
Hence, The impact of feudalism on American exploration is that Feudalism was said to be a system that brought about local administrative control and the also the sharing of land into units.
Learn more about feudalism from
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Answer:
a = 132 m/s^2
Explanation:
f(t) = t^4 − 2t^3 − 6t^2 + 9t
v = f'(t) = 4t^3 - 6t^2 - 12t + 9
a = f''(t) = 12t^2 - 12t -12
Substitute t = 4 seconds into the equation for a:
a = 12(16) -12(4) -12 = 132 m/s^2