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In what situation is it beneficial to combine cells a) in series b) in parallel?
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- Plot 1 in Figure (a) gives the charge q that can be stored on capacitor 1 versus the electric potential V set up across it. The vertical scale is set by q = 28 μC, and the horizontal scale is set by Vs = 10 V. Plots 2 and 3 are similar plots for capacitors 2 and 3, respectively. Figure (b) shows a circuit with those three capacitors and a 1.2 V battery. What is the charge stored on capacitor 2 in that circuit? Number i q (μC) 95 Units V (V) (a) 8 + V (b)In a typical mammalian cell, the net transport by the sodiumpotassium exchange pump that maintains the 70 mV membrane potential is 500 singly charged ions per second. How much work does the pump do each second?To recharge a 12 V battery, a battery charger must move 3.7 x 10° C of charge from the negative terminal to the positive terminal. How much work is done by the battery charger? Answer in units of J.
- Plot 1 in Figure (a) gives the charge q that can be stored on capacitor 1 versus the electric potential V set up across it. The vertical scale is set by qs = 12 μC, and the horizontal scale is set by Vs = 6.0 V. Plots 2 and 3 are similar plots for capacitors 2 and 3, respectively. Figure (b) shows a circuit with those three capacitors and a 7.5 V battery. What is the charge stored on capacitor 2 in that circuit? Number (r) b qs 0 Units V (V) (a) V C₁ C₂ (b)On a Saturday afternoon, a man was thankful he wasn’t in his car when the 20 000 mAh power bank he left inside the glove compartment burst into flames. The man parked his Proton Iswara at a nearby restaurant for lunch. About an hour later, the parking attendant rushed into the restaurant to inform the man that smoke was billowing from his car. He quickly grabbed an extinguisher and put out the fire. As the forensic scientist are requested to investigate the cause of the flames of the car. a)List all the things you know from the case/scenario & other information that you confidently about the problem. b)List all the questions you have & any information that would help you understand the problem better c)List further Physics information, theories, concepts and formulas you need to solve this problem successfully.Plot 1 in Figure (a) gives the charge q that can be stored on capacitor 1 versus the electric potential V set up across it. The vertical scale is set by qs = 20 μC, and the horizontal scale is set by Vs = 4.0 V. Plots 2 and 3 are similar plots for capacitors 2 and 3, respectively. Figure (b) shows a circuit with those three capacitors and a 5.5 V battery. What is the charge stored on capacitor 2 in that circuit? (1) b 95 0 ہے V (V) (a) V= C₁ Co (b) C
- Plot 1 in Figure (a) gives the charge q that can be stored on capacitor 1 versus the electric potential V set up across it. The vertical scale is set by q,- 12 μC, and the horizontal scale is set by V, 10 V. Plots 2 and 3 are similar plots for capacitors 2 and 3, respectively. Figure (b) shows a circuit with those three capacitors and a 5.8 V battery. What is the charge stored on capacitor 2 in that circuit? Number 5333333.33E-7 Units V (V) (a) UCA potential difference AV exists between the inner and outer surfaces of the membrane of a cell. The inner surface is negative relative to the outer surface. If 1.50 × 10-20 J of work is required to eject a positive potassium ion (K*) from the interior of the cell, what is the magnitude of the potential difference (in millivolts) between the inner and outer surfaces of the cell? |AV| = mVAt home I have a 350W motorized washing machine that I use to wash three times a week, 2 batches of clothes of 22 minutes each each time. Based on this problem, answer the following questions: a) How much energy in Joules do I "consume" in a year? (use 52 weeks for your calculation) b) based on the conditions of the previous question, what consumption would you have in kWh? c) How much do I pay, annually, in dollars, for the use of the washing machine, if the rate for energy from my electric company is 0.17443 / kWh?
- Assume a length of axon membrane of about 0.10 m is excited by an action potential (length excited = nerve speed pulse duration = 50.0 m/s 2.0 103 s = 0.10 m). In the resting state, the outer surface of the axon wall is charged positively with K+ ions and the inner wall has an equal and opposite charge of negative organic ions, as shown in Figure P18.43. Model the axon as a parallel-plate capacitor and take C = 0A/d and Q = C V to investigate the charge as follows. Use typical values for a cylindrical axon of cell wall thickness d = 1.0 108 m, axon radius r = 1.0 101 m, and cell-wall dielectric constant = 3.0. (a) Calculate the positive charge on the outside of a 0.10-m piece of axon when it is not conducting an electric pulse. How many K+ ions are on the outside of the axon assuming an initial potential difference of 7.0 102 V? Is this a large charge per unit area? Hint: Calculate the charge per unit area in terms of electronic charge e per squared (2). An atom has a cross section of about 1 2 (1 = 1010 m). (b) How much positive charge must flow through the cell membrane to reach the excited state of + 3.0 102 V from the resting state of 7.0 102 V? How many sodium ions (Na+) is this? (c) If it takes 2.0 ms for the Na+ ions to enter the axon, what is the average current in the axon wall in this process? (d) How much energy does it take to raise the potential of the inner axon wall to + 3.0 102 V, starting from the resting potential of 7.0 102 V? Figure P18.43 Problem 43 and 44.A pair of capacitors with capacitances CA = 3.70 F and CB = 6.40 F are connected in a network. What is the equivalent capacitance of the pair of capacitors if they are connected a. in parallel and b. in series?Consider the circuit shown in Figure P20.52, where C1 = 6.00 F, C2 = 3.00 F, and V = 20.0 V. Capacitor C1 is first charged by closing switch S1. Switch S1 is then opened, and the charged capacitor is connected to the uncharged capacitor by closing S2. Calculate (a) the initial charge acquired by C1 and (b) the final charge on each capacitor. Figure P20.52