Asapif earth was like a hard boiled egg, which part of earth would the egg shell represent and why? a crust, as its depth is up to 3000 kilometersb mantle, as its depth is up to 3000 kilometers c mantle, as its depth is less than 100 kilometers d crust, as its depth is less than 100 kilometers

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

In what direction does the medium move relative to the direction of the wave? explain.

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.