Answers: 2
Physics, 22.06.2019 18:00
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.
Answers: 1
Physics, 22.06.2019 19:30
Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
Answers: 1
Physics, 23.06.2019 00:30
Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable:
Answers: 1
Physics, 23.06.2019 06:00
If we decrease the amount of force and keep all other factors the same what will happen to the amount of work
Answers: 1
Un muchacho tira una pelota hacia abajo a -25,0 m/s desde la azotea de un edificio de 30,0 m. ¿Qué t...
Mathematics, 22.12.2019 16:31
Social Studies, 22.12.2019 16:31
English, 22.12.2019 16:31
Spanish, 22.12.2019 16:31
Computers and Technology, 22.12.2019 16:31
Mathematics, 22.12.2019 16:31
English, 22.12.2019 16:31
Social Studies, 22.12.2019 16:31
English, 22.12.2019 16:31
Health, 22.12.2019 16:31