Given that the electric field between the plates (inside the membrane) is about 107 N/C and...
Given that the electric field between the plates (inside the membrane) is about 107 N/C and the thickness of the membrane is about 7 nm, estimate the acceleration of the ion in nm/s2 if it were in the channel (and the channel were empty). The ion is an Na+.
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Given that the electric field between the plates (inside the
membrane) is about 107 N/C and...
Given that the electric field between the plates (inside the membrane) is about 107 N/C and...
Given that the electric field between the plates (inside the membrane) is about 107 N/C and the thickness of the membrane is about 7 nm, estimate the electric force on the ion in newtons when it is in the channel.
Rolling down the electric hill Distributions of electric charges in a cell play a role in...
Rolling down the electric hill Distributions of electric charges in a cell play a role in moving ions into and out of a cell. In this situation, the motion of the ion is affected by two forces: the electric force due to the non uniform charge distribution in the cell membrane, and the resistive force (viscosity) due to colliding with the fluid molecules. In order to begin our analysis of this, let's consider a toy model in which the ion...
The electric field across a cell membrane is 5.36 × 107 N/C directed into the cell....
The electric field across a cell membrane is 5.36 × 107 N/C directed into the cell. What is the magnitude of the electric force on the sodium ion? The charge on the sodium ion is +e.
7. The electric field in a cell membrane has a magnitude of 1.0 10 N/C. Calculate...
7. The electric field in a cell membrane has a magnitude of 1.0 10 N/C. Calculate the magnitude of the force exerted on a Na ion.
The electric field between two parallel plates is uniform, with magnitude 576 N/C. A proton is...
The electric field between two parallel plates is uniform, with magnitude 576 N/C. A proton is held stationary at the positive plate, and an electron is held stationary at the negative plate. The plate separation is 4.30 cm. At the same moment, both particles are released (a) Calculate the distance (in cm) from the positive plate at which the two pass each other. Ignore the electrical attraction between the proton and electron cm (b) Repeat part (a) for a sodium...
7. The electric field is zero: a. inside any conductor. inside any conductor with a static...
7. The electric field is zero: a. inside any conductor. inside any conductor with a static charge. inside any material, conductor or insulator, with a static charge. d. Never e. Always. I there is a force of 5.0 x 1012 N acting to the left on an electron, the electric field intensity at the location of this electron will be: a. zero. b. 8.0 x 103 N/C to the left c. 3.1 x 10" N/C to the left 3.1 x...
Question 3-6 points (a) Calculate the electric field in a cell membrane with a thickness of...
Question 3-6 points (a) Calculate the electric field in a cell membrane with a thickness of 8nm when the membrane potential is-70 mV. (2 points) (b) If a Sodium ion, Na, moves from inside the cell to outside the cell, calculate the change in the ion's electric potential energy. Does it increase or decrease? (2 Points) (e) In one cycle the sodium-potassium pump removes 3 sodium ions from the cell while importing 2 potassium ions, K. What is the total...
Two parallel metal plates have a uniform electric field between them of 3 N/C. There is...
Two parallel metal plates have a uniform electric field between them of 3 N/C. There is a uniform magnetic field of 0.18 T applied perpendicularly to the electric field. An electron in an electron beam is aimed between the plates as shown b. What is the magnitude of the electric force on the electron as it travels through the electric field? Answer in terms of "x"x10-19N ++++ +++++
(ex) The electric field is 1.20 times 10^6 N/C between plates 1 and 2, but is...
(ex) The electric field is 1.20 times 10^6 N/C between plates 1 and 2, but is zero everywhere else in the figure. The magnetic field is 0.600 T everywhere in the figure. After passing straight through the region between the plates, aluminum ions enter the region with only a magnetic field, move in a circular path of radius 0.899 m there, and finally hit the photographic plate. a) The region between plates 1 and 2 is a "velocity selector": Only...
The electric field between two square metal plates is 130 N/C. The plates are 1.3 m...
The electric field between two square metal plates is 130 N/C. The plates are 1.3 m on a side and are separated by 4.0 cm. What is the charge on each plate (assume equal and opposite)? Neglect edge effects.
Rolling down the electric hill Distributions of electric charges in a cell play a role in moving ions into and out of a cell. In this situation, the motion of the ion is affected by two forces: the electric force due to the non uniform charge distribution in the cell membrane, and the resistive force (viscosity) due to colliding with the fluid molecules. In order to begin our analysis of this, let's consider a toy model in which the ion...
7. The electric field in a cell membrane has a magnitude of 1.0 10 N/C. Calculate the magnitude of the force exerted on a Na ion.
The electric field between two parallel plates is uniform, with magnitude 576 N/C. A proton is held stationary at the positive plate, and an electron is held stationary at the negative plate. The plate separation is 4.30 cm. At the same moment, both particles are released (a) Calculate the distance (in cm) from the positive plate at which the two pass each other. Ignore the electrical attraction between the proton and electron cm (b) Repeat part (a) for a sodium...
7. The electric field is zero: a. inside any conductor. inside any conductor with a static charge. inside any material, conductor or insulator, with a static charge. d. Never e. Always. I there is a force of 5.0 x 1012 N acting to the left on an electron, the electric field intensity at the location of this electron will be: a. zero. b. 8.0 x 103 N/C to the left c. 3.1 x 10" N/C to the left 3.1 x...
Question 3-6 points (a) Calculate the electric field in a cell membrane with a thickness of 8nm when the membrane potential is-70 mV. (2 points) (b) If a Sodium ion, Na, moves from inside the cell to outside the cell, calculate the change in the ion's electric potential energy. Does it increase or decrease? (2 Points) (e) In one cycle the sodium-potassium pump removes 3 sodium ions from the cell while importing 2 potassium ions, K. What is the total...
Two parallel metal plates have a uniform electric field between them of 3 N/C. There is a uniform magnetic field of 0.18 T applied perpendicularly to the electric field. An electron in an electron beam is aimed between the plates as shown b. What is the magnitude of the electric force on the electron as it travels through the electric field? Answer in terms of "x"x10-19N ++++ +++++
(ex) The electric field is 1.20 times 10^6 N/C between plates 1 and 2, but is zero everywhere else in the figure. The magnetic field is 0.600 T everywhere in the figure. After passing straight through the region between the plates, aluminum ions enter the region with only a magnetic field, move in a circular path of radius 0.899 m there, and finally hit the photographic plate. a) The region between plates 1 and 2 is a "velocity selector": Only...
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