The law of reflection states that the angle of reflection is equal to the angle of

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

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.