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...
30 degrees <Hwk 6.1 - 6.3 - Attempt 2 Problem 6.6 < 4 of 10 > A Review Express your answer to three significant figures and include the appropriate units. Assume positive scalars for members in tension and negative scalars for members in compression. Value FAS Fes- Units Submit Request Answer Part B Determine the force in member AD of the truss, and use the correct sign to state if the member is in tension or compression Express your answer...
Two nonconducting spheres 1 and 2 carry the same charge, and the magnitude of the electric force exerted by each sphere on the other is 0.2 Nwhen they are 90 mm apart. Assignment 7 (Ch22 and Ch23) Question 9 of 13 ▼PartA Two nonconducting spheres 1 and 2 carry the same charge, and the magnitude of the electric force exerted by each sphere on the other is 0.2 N when they are 90 uapart What is the magnitude of the...
A red blood cell may carry an excess charge of about -2.5××10−12−12 C distributed uniformly over its surface. The cells, modeled as spheres, are approximately 6.6 μμm in diameter and have a mass of 9.0××10−14−14 kg. What is the surface charge density σσ on the red blood cell? Express your answer in C/m22. (Express your answer to two significant figures.) Cumulative Problem 4 A red blood cell may carry an excess charge of about-2.5×10-12 C distributed uniformly over its surface....
PHYS ANSWER 1: 1.56*10^7, ANSWER 2: 1.579*10^-10, NEED 3 & 4 A red blood cell typically carries an excess charge of about -2.5 times 10-12 C distributed uniformly over its surface. The red blood cells can be modeled as spheres approximately 7.0 mu m in diameter and with a mass of 9.0 times 10-14 kg. How many excess electrons does a typical red blood cell have? Does the mass of the extra electrons appreciably affect the mass of the cell?...
Part A Carry out the following calculation and report the answer in the correct number of significant figures. (525.63 - 433.621) x 12.900 1.1868 x 103 1.186799 x 103 1.18680 x 103 1.187 x 103 1.19 x 103 Submit Request Answer
Part A Choose the reagents that would be required to carry out the following synthesis: CH 2 OH он H20, H+ O 1 . BH3; 2. HO, H202, H2O 03 followed by (CH3) 2S KMnO4, HO (warm, concd.) KMnO4, HO (cold, dilute) Submit Request Answer
Week 2 Problem 20.32 Constants 1 Periodic Table Part A IP Point charges 3.8 C and-2.4 A C are placed on the x axis at (16 m, 0) and (-16 m, 0), respectively. Find the point to the left of the negative charge where the electric potential vanishes. Express your answer using two significant figures. Submit Request Answer
Chem Question 2 of 4 Determine Eº for a galvanic (voltaic) cell if AG = -6.3 kJ/mol and n = 3. (F = 96,500 J/(V.mol)) 1 2 3 4 5 6 8 7 +/ 9 0 x 100
3. Planes at x-2 and y--3 carry charges of 10 nC/m2 and 15 nC/m2, respectively. If a charged line at x=0, and 2 carries 10π nC/m, calculat the electric field at point A(1, 1, 1) due to three charge distributions: Hint: E-E1+E2+E3