La luz pasa del agua al aire. El haz sale al aire formando un ángulo de 32 grados con la superficie horizontal del agua, ¿Cual es el ángulo de incidencia dentro del agua?

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

What occurs during a combustion reaction

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.