what are the pros and cons of using A radio telescope, 300 meters in diameter, located in Puerto Rico for observing matter around a black hole; assume that the matter is emitting photons at all wavelengths.

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.