How specifically does a solar collector system produce electricity?

Which of the features on this diagram is a point bar?

Find the product AB, if possible.A = [-8 2 -9], B =

Find the term indicated in the expansion.(2x + 3y)10; 7th term

On the diagram, which layer is the lower mantle? (note: layers not to scale)

9).                                    is the product of transcription, and                    is the product of translation.  

Write the first four terms of the sequence whose general term is given.an = (-1)n(n + 6)

On the diagram, which layer is the crust? (note: layers not to scale)

If a rock cooled at the Earth’s surface over the course of hours or days, it will most likely have a _______ texture.

What is the name of the mission that arrived at Mercury in 2011?