Large electric fields in cell membranes cause ions to move through the cell wall. The field...
Large electric fields in cell membranes cause ions to move through the cell wall. The field strength in a typical membrane is 1.0 times 107 N/C. What is the magnitude of the force on a calcium ion with charge +e? Express your answer using two significant figures.
Large electric fields in cell membranes cause ions to move through the cell wall. The field strength in a typical membrane is 1.0 x 10 7 N/C. What is the magnitude of the force on a calcium ion with charge +e? What is its acceleration? Is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? What would change the acceleration: mass of the particle? diameter of the...
Cell Membranes and Dielectrics Many cells in the body have a cell membrane whose inner and outer surfaces carry opposite charges, just like the plates of a parallel-plate capacitor. Suppose a typical cell membrane has a thickness of 8.2×10−9 m , and its inner and outer surfaces carry charge densities of -5.3×10−4 C/m2 and +5.3×10−4 C/m2 , respectively. In addition, assume that the material in the cell membrane has a dielectric constant of 5.5. Part A . Find the direction...
the electric field across a cell membrane is 1.0x10^7N/C directed into the cell. if a pores opens which way do sodium ions flow into the cell or out of the cell. what is the magnitude of the electric force on the sodium ion? the charge on the sodium ion is + e
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.
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. Assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.1 10-6 C/m2. (a) What is the magnitude of the electric field within the cell membrane? N/C (b) Find the magnitude of the electric force that would be exerted on a potassium ion...
A cell membrane consists of an inner and outer wall separated by a distance of approximately 10nm. Assume that the walls act like a parallel plate capacitor, each with a charge density of 10-5C/m2, and the outer wall is positively charged. Although unrealistic, assume that the space between cell walls is filled with air. part A: What is the magnitude of the electric field between the membranes? Part B: What is the magnitude of the force on a Mg++ ion...
Some cell membranes in the human body have a layer of negative charge on the inside surface and a layer of positive charge of equal magnitude on the outside surface. Suppose that the charge density on either surface is ± 0.50×10−3 C/m2, the cell membrane is 5.00 nm thick, and the cell membrane is made up of tissue with a dielectric constant of 5.40. A) Find the magnitude of E in the membrane between the two layers of charge. E=?...
Under certain circumstances, potassium ions K++ move across the
8.0-nm-thick cell membrane from the inside to the outside. The
potential inside the cell is -80.0 mV, and the potential outside is
zero. Assume that a potassium ion carries a charge of
1.602××10−19−19 C.
Unit 3: Prelecture Problems Problems: Electric Potential & Capacitor Deadline: 100% until Sunday, January 27 at 11:59 PM ▼ Cumulative Problem 6 Under certain circumstances, potassium ions K+ move across the 8.0-nm-thick cell membrane from the inside...
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.