Heating the gas in an air balloon makes the balloon rise<span> because the </span>gas<span> in the</span>balloon<span> becomes lighter than natural </span>air<span>. The </span>heated gas<span> has less mass per unit of volume than that of the cool </span>air<span> surrounding the </span>balloon<span>. Hope this answers the question.</span>
Answer: I think its called the "photosphere"
Explanation: Its very unsafe to look at but when you look up at the sun, visible lights radiates the sun so we can see it. Hope this helps!
<em><u>Given</u></em><em> </em> :
- <em>O</em><em>bject </em><em>position</em><em> </em>( u ) = - 36 cm
- <em>focal</em><em> </em><em>length</em><em> </em>( f ) = - 16 cm
- <em>image position</em><em> </em>( v ) = ?
now, we know
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So<em><u>, image position</u></em> = 28.8 cm, at same side of object .
Yes it is an ion as it has a positive charge (i.e more protons than electrons, in this case there is no electrons). It's also an ion of an isotope of a hydrogen atom.
Hope this helps :).