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Question about Geometric and Physical Optics: Refraction, Reflection, and Absorption

Physics

Originais Teachy

Geometric and Physical Optics: Refraction, Reflection, and Absorption

Hard

(Originais Teachy 2023) - Question Hard of Physics

In addition, the General Theory of Relativity establishes that gravitation cannot be explained by the classical Newtonian law, as it directly depends on the curved space-time generated by the matter present in the Universe. Regarding gravitation, what is the basic concept highlighted by the Theory of Relativity?
a.
Local gravitation
b.
Universal gravitation
c.
Instantaneous gravitation
d.
Infinitesimal gravitation
e.
Measurable gravitation

Answer:

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Emoji eyes

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Emoji eyes
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Refraction is a physical phenomenon that occurs when a beam of light passes from one medium to another, undergoing a change in the direction of its movement. One of the main laws involved in the study of this phenomenon is known as Snell's Law of Angles - Descartes, which establishes a relationship between the angles formed between the directions of the light rays before and after passing through the interface between the material media involved in the process. What mathematical relationship is contained in this law?

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A thermal engine operating in cycles receives heat from a hot source and performs mechanical work, rejecting part of the heat to a cold source. Considering the cycle of a thermal engine that receives 1800 J of energy in the form of heat from the hot source, and knowing that its efficiency is 30%, calculate the work performed and the amount of heat rejected to the cold source, applying the first law of thermodynamics. Which alternative correctly presents the values of work performed and heat rejected (in Joules)?

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