If the machine is working properly then that rules out 2, 3 and 4 as they are all technical problems and therefore it must be A there waves don't reflect of the stone properly and therefore no image is formed
Hope that helps
Total charge is zero as ratio of both are same so their charge will be cancel out and give zero
Just changed and transferred
Answer:
D
Explanation:
An oil boom helps contain the oil so that it is easier for them to skim it off of the water. They aren't meant to clean up oil, only to contain the oil since it does not sink or mix with water.
Answer:
D) 10.5
Explanation:
DNA which is known as Deoxyribonucleic acid have base pairs which are the building blocks of the DNA. The base pairs are known as Adenine-Thymine base pair and Guanine-Cytosine base pair.
DNA studies by scientist however have found that there are approximately 10.5 base pairs in two turns of a B-DNA double helix.