It used to take Andy 4 minutes a day to blow dry his hair in the morning using a 1,875W hair dryer. How much money will he save in one 30-day month now that he no longer has to blow
dry his hair? Use the rate of electricity is $0.0783/kwh.
Question 8 (2 points)
A resistance of 79 ohms has a current of 0.13 A through it. What is the voltage of the battery in volts?
a) 10.27 volts
b) 607.7 volts

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.