Answer:
D. mass to see how it affected stretch length of a rubber band
Answer:
Sagittarius A
Explanation:
The center of the milky way has a big giant hole known as "Sagittarius A". The size is 4 million times bigger than the sun.
To determine the energy equivalent of an object, we use the famous equation of Einstein which is E=mc^2 where m is the mass of the object and c is the speed of light (3x10^8 m/s). We calculate as follows:
E = mc^2
E = 4.1 kg (3x10^8 m/s)^2
E = 3.69x10^17 J
