Constants Many chemical reactions release energy. Suppose that at the beginning of a reaction, an electron and proton are separated by 0.110 nm, and their final separation is 0.101 nm. Part A How much electric potential energy was lost in this reaction (in units of eV)? Express your answer using two significant figures. ΑΣφ PE eV
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- Part A What is the electric potential at this point? At one point in space, the electric potential energy of a 15 nC charge is 51 µJ. Express your answer with the appropriate units. НА V = Value Units 9 This unit is not recognized. See the list of acceptable units. No credit lost. Try again. Submit Previous Ansswers Request Answer Part B If a 25 nC charge were placed at this point, what would its electric potential energy b Express your answer with the appropriate units. U = Value Units Submit Request AnswerPlease don't provide handwritten solution ...PART B ONLY PLEASE
- Part A A 5.1x10 V/m electric field creates a 3.5x1017 electrons/s current in a 2.0-mm-diameter aluminum wire. What is the drift speed? Express your answer using two significant figures. m/s = Pa Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the mean time between collisions for electrons in this wire? Express your answer using two significant figures.A hollow cylindrical shell of length L and radius R has charge Q uniformly distributed along its length. Part A What is the electric potential at the center of the cylinder? Express your answer in terms of Q, L, R and appropriate constants. ΑΣΦ ?Part A How strong is the electric field between the plates of a 0.89 µF air-gap capacitor if they are 2.3 mm apart and each has a charge of 67 µC ? Express your answer using two significant figures. Hνα ΑΣφ ? E = V/m Submit Request Answer
- Part A Capacitors C, = 10µF and C2 = 20µF are each charged to 22 V, then disconnected from the battery without changing the charge on the capacitor plates. The two capacitors are then connected in parallel, with the positive plate of C connected to the negative plate of C2 and vice versa. Afterward, what is the charge on each capacitor? Express your answer using two significant figures. Enter your answers numerically separated by a comma. ? Q1, Q2 = µC Submit Request Answer Part B What is the potential difference across each capacitor? Express your answer using two significant figures. Enter your answers numerically separated by a comma. nν ΑΣφ ? AVi, AV2 = V Submit Request AnswerNeeds Complete typed solution with 100 % accuracy.To recharge a 10 V battery, a battery charger must move 3.0 105 C of charge from the negative terminal to the positive terminal. How much work is done by the charger? Express your answer in joules. J
- Living cells "pump" singly ionized sodium ions, Na", from the inside of the cell to the outside to maintain a membrane potential AV membrane = Vin - Vout - 70 mV. It is called pumping because work must be done to move a positive ion from the negative inside of the cell to the positive outside, and it must go on continuously because sodium ions "leak" back through the cell wall by diffusion. a. How much work must be done to move one sodium ion from the inside of the cell to the outside? b. At rest, the human body uses energy at the rate of approxi- mately 100 W to maintain basic metabolic functions. It has been estimated that 20% of this energy is used to operate the sodium pumps of the body. Estimate-to one significant figure the number of sodium ions pumped per second.Part A An electron moves between two plates and experiences an increase in kinetic energy of 3.8x10-15 J. Calculate AV = VA - VB of the plates. AV = Express your answer with the appropriate units. Value A A Submit Request Answer VA Units ? VB BElectric Potential Energy (An lonic Crystal) 3. Four positive and four negative charges of equal magnitudes +Q are arranged alternately on the corners of a cube of side length d, +Q as drawn. This is a model of one cell of an ionic crystal such as -Q +Q salt, NaCl. a. Calculate the potential energy of this configuration. As d usual, take the energy to be zero infinitely far away from the charges. Express the energy in terms of k, Q, and d. d Hints: -Q +Q There are 12 pairs of opposite charges along the edges There are 12 pairs of like charges along the diagonals of each face There are 4 pairs of opposite charges along the cube's long diagonals b. In part (a), you should have determined that U < 0. Explain the relationship between this result and the observation that such crystals freely form in nature.