The index of refraction for water is about 4/3. What happens to light when it travels from air into water?
1 answer:
Answer:
The light slows down to a speed equal to 3/4 of its original value
Explanation:
The speed of light in a medium is given by:
where
is the speed of light in a vacuum
n is the index of refraction of the medium
For light entering air, we have that the light enters a medium with index of refraction of
Therefore, its speed changes as follows
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Answer:
Total charge provided by the battery could be 900000 C.
Maximum current provided by the battery for 37 minutes could be 405.405 A
Explanation:
Rating= 250 A-h
a. Total charge:
Suppose t=1h
We konw that , replacing:
Total charge provided by the battery could be 900000 C.
b. Maximum current for 37 minutes
Maximum current provided by the battery for 37 minutes could be 405.405 A
is the time interval elapses before the back end of the rod receives the message that it should stop.
Given:
Length of the rod, L = 80 cm = 0.800 m
Young's modulus, Y =
steel density,
The speed of the wave in the rod is,
Consequently, the length of the rod's end is traveled by the wave in at
Hence, is the time interval elapses before the back end of the rod receives the message that it should stop.
The three fundamental laws of classical mechanics known as Newton's laws of motion describe how an object's motion and the forces acting on it interact. The following paraphrase of these statutes is available
Unless a force acts upon a body, it remains at rest or in continual straight-line motion.
When a force acts on a body, the force is equal to the time rate at which the body's momentum changes.
When two bodies exert force on one another, the direction and amount of the force are opposed.
Isaac Newton first identified the three laws of motion in his 1687 book Philosophize Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy).
They served as the cornerstone for classical mechanics as Newton used them to examine and explain the motion of numerous physical objects and systems. The conceptual foundations of classical physics have been reconstructed in several ways since Newton, utilizing various mathematical techniques that have revealed insights that were hidden in the original, Newtonian formulation.
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