The light collected by a telescope is proportional to the area of the telescope.
The area of a telescope is π * (Diameter / 2) ^2 = π * (Diameter)^2 / 4.
So, for the 20.0 cm telescope, area = π * (20.0cm)^2 / 4.
And for the 5.0 cm telescope, area = π * (5.0 cm)^2 / 4
So, divide both expressions to find the ratio of collection of light of one telescope to the other:=> (20.0)^2 / (5.0)^2 = (20.0 / 5.0)^2 = 4^2 = 16
Then, the 20.0 cm telescope collects 16 times the ligth that the 5.0 cm telescope collect. <--- answer
Answer:
Atoms of elements with the same electons in the outer most shell they are put in the same group on the periodic table
Relatively hot objects emit visible light.
Some examples:
==> the wire coils in the toaster;
==> the spoon that you stuck in the flame on the stove;
==> the fine wire in the lightbulb when current goes through it.
VERY radioactive objects also do that. But if you're actually
standing there watching an object that's THAT radioactive,
then you're in big trouble.
The three main parts of an atom are protons, neutrons<span>, and </span>electrons<span>. </span>Protons<span> - have a positive charge, located in the </span>nucleus<span>, </span>Protons<span> and </span>neutrons<span> have nearly the same mass while </span>electrons<span> are much less massive. </span>Neutrons<span>- Have a negative charge, located in the </span><span>nucleus</span>
The answer would be D hope it helps and sorry if it is wrong. :)
