ure 3.0 cm / -2.0 nC 1.0 nC 3.0 cm 3.0 cm -2.0 DC 1 of 1 What is the electric potential energy of the group of charges in the figure? (Figure 1) Express your answer with the appropriate units. μA 15.59 V Provide Feedback ? Submit Previous Answers Request Answer X Incorrect; Try Again; 6 attempts remaining
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- The plates of a parallel-plate capacitor are 3.22 mm apart, and each has an area of 9.92 cm². Each plate carries a charge of magnitude 4.50x10-8 C. The plates are in vacuum. ▼ What is the capacitance? Express your answer with the appropriate units. C = Submit Part B PHÅ V = Value Request Answer What is the potential difference between the plates? Express your answer with the appropriate units. 98 Value C μᾶ Units Units ? ?I Review A 13.0 nC charge is at x = Ocm and a -1.4 nC charge is at = 3.0 cm Part A At what point or points on the a-axis is the electric potential zero? Express your answer in centimeters. If there is more than one answer, give each answer separated by a comma. Vα ΑΣφ ? x0 = cm Submit Request AnswerA 5.15 nF parallel-plate capacitor contains 26.0 µJ of stored energy. ▼ Part A What is the potential difference across the capacitor? Express your answer in volts. V = Submit Part B V = ΑΣΦ Submit Request Answer By how many volts would you have to increase this potential difference in order for the capacitor to store 52.0 μJ of potential energy? Express your answer in volts. VG ΑΣΦ ? Request Answer ?
- A molecule of DNA (deoxyribonucleic acid) is 2.27 μm long. The ends of the molecule become singly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 1.20% upon becoming charged. Determine the effective spring constant of the molecule. Need Help? N/m Read It Submit AnswerYou measure the voltage across two parallel capacitors to be 38 V. If they have a separation distance 0f 3.5 mm, what is the strength of the electric field in N/C? a. 1.09 x 10^4 N/C b. 1.33 x 10^4 N/C c. 9.21 x 10^-5 N/C d. 722 N/C e. None of the aboveIn the figure below given that Q =39 nC, find the electric potential in units of V at the point p. 3Q 3 m 4 m 2 m Select one: A. 132 В. 93 C. 289 X D. 54
- Which of these expressions gives the magnitude of the work done in moving a 4.00 nC charge through a potential difference of 15.0 volts in SI units? a. 0.004 x 15 b. 15.0 eV c. 4.00 eV d. 4 x 15 e. 4.00 x 10-9 x 15QUESTION 3 Which of the following statements is the correct equation for conservation of mechanical energy for a point charge, q, and mass, m, moving with a speed, v, through a potential difference, V - V in an electric field? f 1 mv? + qV,=-mv² + qV, а. b. 1 ,2 2 2 O c. 1 mv¸+qV +qV i f d. 1 1 mv?+ V 2 * V,=-mv² + V f 2 f Imv?+ V = -mv? +V, е. 2 f(Figure 1) shows the potential energy of an electric dipole. Consider a dipole that oscillates between ±60°. Figure -180° U (μJ) 2- -0 0° -2 1 of 1 180° Part A What is the dipole's mechanical energy? Express your answer to two significant figures and include the appropriate units. Emech= Submit Part B K = Submit Value Provide Feedback µА Request Answer What is the dipole's kinetic energy when it is aligned with the electric field? Express your answer to two significant figures and include the appropriate units. μÅ Value Units Request Answer Units Bw ? ?
- 21. Two metal plates are charged and are measured to have a potential difference of 15.0 V. An electron is placed near the negative plate and released. What is the kinetic energy of the electron when it reaches the positive plate? a. 24.0 x 10¹ b. 9.9 x 10-¹9 1.0 x 10-¹9 J 13.4 x 10-19 j c. d.2. A +4.0µC charge starts at a distance of 45cm from a -7.5µC charge. By how much does the potential energy of this system change when the +4.0μC charge moves closer, until this is 23cm away? Include the right sign (positive for an increase, or negative for a decrease). energy as it is the s +4.0pC ㅏㅏ -7.5µC 23cm 45cmCalculate the electrical potential energy of a charge with 5000 C if a battery has 12 V? a. 60 kJ b. 6 kJ c. 416 kJ d. 4.16 kJ