Asurface completely surrounds a 3.3 × 10-6 c charge. find the electric flux through this surface when the surface is (a) a sphere with a radius of 0.76 m, (b) a sphere with a radius of 0.18 m, and (c) a cube with edges that are 0.46 m long.

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

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.