ReviewA typical cell has a membrane potential of -70 mV,meaning that the potential inside the cell is 70 mVless than the potential outside due to a layer ofnegative charge on the inner surface of the cell walland a layer of positive charge on the outer surface.This effectively makesPart Athe cell wall a chargedcapacitor. Because a cell's diameter is much largerthan the wall thickness, it is reasonable to ignorethe curvature of the cell and think of it as a parallel-How much energy is stored in the electric field of a 50-um-diameter cell with a 7.0-nm-thick cell wall whose dielectricconstant is 9.0?Express your answer with the appropriate units.plate capacitor.HA15Uc = 54.733 • 10JSubmitPrevious Answers Request AnswerX Incorrect; Try Again; 4 attempts remaining

As given in question we can ignore the thickness of the wire since it is much less than the…

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Which of the following statements is true? O A capacitor is charged when connected to a load O Capacitors in series means: CT = C1 + C2 + ... + Cn After inserting the dielectric between the plates, the amount of charge remains the same O After inserting the dielectric between the plates, the amount of capacitance remains the same
6.A Three identical capacitors are connected as shown. You charge the capacitors by attaching batteries to points A, B and C (but not D). You then disconnect the batteries to find that the potential at point A is Va=100V, at point B is Vb=60V, and at point C is Vc=50V. The potential at point D is then: A bove D. a) (Va * Vb + Vc * Vb)'2 b) (Va + Vb + Vc)/3 c) (Va + Vc- Vb)/2 d) Va/100+Vb/60+Vc/50 e) Va*100+Vb*60+Vc*50 f) Va*Vb*Vc °.
A proton with an initial speed of 850,000 m/s is brought to rest by an electric field. ▾ Part A Did the proton move into a region of higher potential or lower potential? O Because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential. O Because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential. O Because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential. Because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential. Submit ✓ Correct Here we learn how to determine the distribution of the electric potential based on the movement of a charged particle. Part B Previous Answers What was the potential difference…
IP A parallel-plate capacitor has plates with an area of 1.1×10-2 m² and a separation of 0.83 mm. The space between the plates is filled with a dielectric whose dielectric constant is 1.9. ▾ Part A What is the potential difference between the plates when the charge on the capacitor plates is 4.0 μC ? Express your answer using two significant figures. 15. ΑΣΦ V= Submit ▾ Part B O Increase O Decrease Will your answer to part A increase, decrease, or stay the same if the dielectric constant is increased? O Stay the same Submit Request Answer Part D Part C Complete previous part(s) V= Request Answer Submit B ? Calculate the potential difference for the case where the dielectric constant is 4.1. Express your answer using two significant figures. VE| ΑΣΦ Request Answer V ? V
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Part A For the system of capacitors shown in the the figure below(Figure 1), a potential difference of 25.0 V is maintained across ab. What is the equivalent capacitance of this system between a and 6? ? C = nF Submit Request Answer Figure Part B 7.5 nF How much charge is stored by this system? 18.0 nF 30.0 nF 10.0 nF Q = nC 6.5 nF
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Particles A, B, C, and D in (Figure 1) each carry a charge of magnitude 1.0 nC. Express your answer with the appropriate units. U = 0 J Submit Previous Answers Part C Correct Calculate the electric potential energy for the charge distribution in this 3.0-m square if B and C are positive and A and D are negative. Express your answer with the appropriate units. ΜΑ ? U = Value Units Submit Request Answer <1 of 1 Part D Calculate the electric potential energy for the charge distribution in this 3.0-m square if A and C are positive and B and D are negative. Express your answer with the appropriate units. Figure A+ +B HA ? U = Value Units
A potential difference of 98 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell? J
Part A To what potential should you charge a 0.500 µF capacitor to store 1.60 J of energy? Express your answer with the appropriate units. HA |1914.9 V This unit is not recognized. See the list of acceptable units. No credit lost. Try again. Submit Previous Answers Request Answer
In (Figure 1), C1 = 6.00 pF, C2 = 3.00 μF, and C3 = 5.00 μF. The capacitor network is connected to an applied potential Vab After the charges on the capacitors have reached their final values, the charge on C2 is 30.0 μC. Figure b C₁ C3 d 1 of 1 Part A What is the charge on capacitor C1? Express your answer with the appropriate units. Q1 = Submit Part B Q3 = Submit Part C 123+ What is the charge on capacitor C3? Express your answer with the appropriate units. Vab= Value Submit 123+ Request Answer Value ( 3 ? 123+ Provide Feedback Units What is the applied voltage Vab? Express your answer with the appropriate units. Value Request Answer 3 CE? Units CE ? Units Request Answer G
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