Melissa uses bags of mulch that weigh 40 pounds each. she needs to carry 10 bags to her truck. she usually carries one bag at a time. would she do less work if she carried 2 bags at a time?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Which of the following are appropriate acceleration units?

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.