Chapter 18, Problem 36 GO The membrane surrounding a living cell consists of an

Question

Chapter 18, Problem 36 GO 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 6.9 × 10-6 C/m2. (a) What is the magnitude of the electric field within the cell membrane? (b) Find the magnitude of the electric force that would be exerted on a potassium ion (K+, charge = +e) placed inside the membrane. (a) Number Units (b) Number Units SHOW HINT GO TUTORIAL LINK TO TEXT LINK TO TEXT | | LINK TO TEXT y. By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor Question Attempts: 0 of 3 used SAVE FOR LATER SUBMIT ANSWE

Explanation / Answer

(A) field inbetween the membranes,

E = sigma / e0

E = (6.9 x 10^-6) / (8.854 x 10^-6)

E = 7.8 x 10^5 N/C .....Ans

(B) F = q E

{ q = 1e = 1.6 x 10^-19 C}

F = (1.6 x 10^-19) (7.8 x 10^5)

F = 1.25 x 10^-13 N .......Ans

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.