Clear the circuit diagram and make a new circuit. Set the voltage of the battery to 9 V, set up a series circuit with three resistors. Set one resistor to 10 Ohms, the second resistor to 21 Ohms, and the third resistor to 13 Ohms. What is the equivalent resistance? What is the average current across the circuit?

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.

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging

Ionic compounds can be readily dissolved in water because the high dielectric constant of water screens and decreases the force between the oppositely charged ions.