Answer:
Black holes are so dense that light cannot escape from them, and they are difficult to detect. Satellites above the Earth's atmosphere can detect bursts of high energy radiation given off by black holes. Dozens of stellar black holes have already been detected in the Milky Way, where there may be tens of millions more.
Explanation:
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Answer:
Humus, which ranges in colour from brown to black, consists of about 60 percent carbon, 6 percent nitrogen, and smaller amounts of phosphorus and sulfur. As humus decomposes, its components are changed into forms usable by plants.
samira-
Answer 1)
a=1° = 0.01745329252 radiansExplanation : According to the conversion chart, to convert 1° this formula is used;
<span>radians = degrees × π / 180°
</span>
while solving for, One degree which is equal 0.01745329252 radians:
1° = π/180° = 0.005555556π = 0.01745329252 rad
Answer 2) b = 1' = = 0.0002907 radians
Explanation : A minute of arc is π/10800 of radian; which is a measurement unit of angular which is equal to 1/60 of 1° degree.
So substituting the value of 1° as and on solving we get,
0.01745/60 = 0.0002907 radians.
A minute of arc is <span>π/<span>10800</span></span><span> of a </span>radian.
Answer 3) C= 1'' = 4.8481
Explanation - When calculating second of arc which is considered to be 1/60 of an arc minute, and 1/3600 of a degree;
So all these are inter-related units which can be calculated if any one value is given;
<span>on solving we get, </span>π/648000 (about 1/206265) of a radian =
4.8481 X
10 moles because for every one mile of oxygen, O2 , you produce 2 miles of water , H20 and therefore if you have 5 moles of oxygen.. you produce moles of water