Im not 100% on these but i can try
1. A compound is made up of elements and their different atoms
2.
A. salt- compound (NaCl) is two elements Na (sodium) and Cl (chloride?)
B. Nitrogen- element its on the periodic table
C. Helium- element its on the periodic table
D. Water- compound (H2O) two elements hydrogen and oxygen
3. element, compound, compound, element
Hope this helps
acceleration is considered to describe an increase or positive change of speed or velocity But deceleation is considered to describe a decrease or negative change of speed or velocity
Answer:
a) 0
Explanation:
A) since he is going around a race track, his initial position is 0m, and his ending position is also 0m, so his displacement is 0. Yes, his distance is 500m, but his displacement is 0, and he did not end up going anywhere for his final position.
B) Distance is total amount traveled, which in this case is 500m, but displacement is 0 as he did not change his position.
Answer:
Furthermore, the AEC said that the Joint Committee has made its position clear that it would no longer authorize any such subsidies. Yet, Mr. Chairman, we find.
Answer:
14 billion years
Explanation:
The distance of the edge of the universe = 14 billion light years
Light year is used to measure the distance which is equal to the distance traveled by the light at the speed of approx 
in one year.
It means that to reach the edge of the universe which is 14 billion light years apart , if one is travelling at the speed of light which is , it will take 14 billion years to reach there.
