Technician a says that a simple planetary gear set operates in neutral if there is no input member. technician b says that it will operate in neutral if there is no reaction member. who is correct?

This chart shows the number of soldiers killed according to two different sources. source a is a book written by university professors. source b is from a well-known historical website. in a paragraph, explain why the data presented is different, and evaluate the reliability of each source. which should be used in a school research project, and why?

How did the growth of railroads american businesses expand

What nitrogenous bases are found in rna