Points Calculate the capacitance of a system that stores 4.0 x 10-10 C of charge at
250.0 V. Use C =
AV
A. 1.0 x 107 F
B. 1.0 x 10-7F
C. 1.6 x 10-12 F
D. 6.2 x 1011 F

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

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.