(a) What is the magnitude of the tangential acceleration of a bug on the rim of a 12.5-in.-diameter disk if the disk accelerates uniformly from rest to an angular speed of 75.0 rev/min in 3.80 s
Answers
Answer:
Explanation:
Given:
d=12.5in=0.3175m
r=d/2=0.3175/2=0.15875m
ωf=75rev/min=7.85rad/s
t=3.80s
The angular acceleration
Tangential acceleration
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The answer is B, Gamma rays.
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You don't need tools (graph paper, protractor etc)
Also, if you are using computers, it easy to programmme.
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!!!!!!!!!!!!!!!
A. They are summaries of many scientists' work.
B. They include the opinions of many scientists.
C. They contain more details about the experiment.
D.They are always easier to read.
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One advantage of using primary sources when doing research on an
experiment is they contain more details about the experiment. The correct option is C.
What are primary sources?
Primary sources are the one which are first hand sources. They are more reliable, so they are more reliable and detailed about the experiment.
Primary sources are the sources which produce their own energy to let other objects emit the same. Just like, Sun, it has has its own light and heat energy. It is reliable and can be experimented with more details.
Thus, the correct option is C.
Learn more about primary sources.
#SPJ2
Answer:
C
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"Geo ..." . . . has something to do with the Earth.
"... thermal" . . . has something to do with heat.
"Geothermal" . . . "Earth heat".
You know that the Earth's core is liquid metals, at high temperature.
You may also know that when people go down into a deep mine, it's
always warm down there.
Some of the heat from the Earth's core soaks up through the Earth,
and there's actually a lot of it available without going too deep below
the surface.
You may have read about "hot springs" ... pools of water that are always
hot, because they extend down deep and get heated by the Earth's heat.
And you may have seen pictures or videos of "geysers" ... deep holes in
rock where there's water down at the bottom, which gets heated by the
Earth's heat, and when it gets to boiling temperature, this stream of hot
water and steam comes shooting up out of the hole. There are a lot of
those geysers in Yellowstone National Park in Wyoming.
Well, if there's enough of this hot water close enough to the surface,
then you can actually install pipes to bring it up to the surface, use the
hot water to heat houses and buildings, and even use the steam to spin
turbines and generate electric power ! Then you're using "Geothermal"
energy . . . "Earth heat".
The country of Iceland is almost completely based on geothermal
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This is a test answer.