What is the exact time of a full earth rotation?
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23h 56m 4.0906s is closer, but stillnot exact. You'll never see an 'exact'
number written anywhere. Firstbecause it doesn't work out to an exact
decimal of anything, and secondbecause it changes ! The Good Friday
earthquake in Alaska changed it,the Fukushima earthquake changed it,
the Nepal earthquake changed it,and the daily drag of the tides changes
it by something like 0.001second every century.
One thing's for sure: It is definitely not 24 hours.
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Nothing happens to the mirror.
However, if the ray is within some suitable range of
wavelengths, the ray is reflected from the mirror's surface.
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A black hole is a object with a gravitational pull so strong, you have to reach the speed of light to escape. Since nobody can, when it happens, we are gone.
b. trough.
c. crest.
d. wavelength
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The highest point of a wave is called the "crest." A wave is a disturbance that travels through a medium or space, transferring energy without transporting matter. Therefore, the correct answer is option c.
As a wave propagates, it undergoes cycles of oscillation with alternating high and low points. The highest point of a wave, where the displacement or amplitude is at its maximum, is referred to as the "crest." On the other hand, the term "trough" refers to the lowest point of a wave, where the displacement or amplitude is at its minimum in the negative direction. The trough is the opposite of the crest, representing the bottommost part of a wave.
Learn more about Crest here.
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the answer is c , crest
B.6.25 times heavier than on Earth
C.2.5 times heavier than on Earth
D.6.25 times lighter than on Earth
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Answer: The correct answer is option C.
Explanation:
Weight = Mass × Acceleration
Let the mass of the space probe be m
Acceleration due to gravity on the earth = g
Weight of the space probe on earth = W
Acceleration due to gravity on the Jupiter = g' = 2.5g
Weight of the space probe on earth = W'
The weight of the space probe on the Jupiter will be 2.5 times the weight of the space probe on earth.
Hence, the correct answer is option C.
Answer:
2.5 times heavier than on Earth
Explanation:
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The word originates from Greek 'chion' meaning snow and 'phobos'
meaning fear, aversion or dread. People with Chionophobia often
understand that their fear is unfounded and weird. However, they
are unable to control it.
Another contributor was the first to answer the question correctly, and in fact,
I learned the answer from that earlier post. If I could only remember who it was,
I would give them a big shout-out. Their answer was deleted by a moderator
because it didn't have an explanation with it.