What will be evidence of a galaxy moving toward earth?
a. the galaxy has a loose, disorganized appearance
b. the stars in the galaxy appear to twinkle .
c. the galaxy appers to be acceleratin.
d. the light wavelenghths coming from the galaxy are becoming shorter

Drag each item into the proper state of matter category.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.