A17.6-kg object oscillates at the end of a horizontal spring that has a spring constant of 20.0 kn/m. the effect of air resistance is represented by the damping coefficient b = 6.69 kg/s. find the time for the amplitude of the oscillation to drop to 5.98% of its original value.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Why does lightning travel from clouds to the ground?

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.