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- QUESTION 4 An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate. The plates are separated by a distance of 1.39 cm, and the electric field within the capacitor has a magnitude of 1743307 V/m. What is the kinetic energy of the electron just as it reaches the positive plate? (Give your answer in 2 d.p. with scientific notation(i.e. 1.23e-12)} 1 Electric field Electron F + + + + + + + + + +Suppose a swarm of bees flies through a thunderstorm and they become charged to –10.0 µC each. If there are 5,000 bees in the hive, what is the total electric flux through the walls of the hive? a. b. The Hatfields and McCoys have a historic feud, and now they have physics degrees. Using the figure below, if the bees fly straight up out of the hive and Mr. Hatfield would like to deflect the bees toward Mr. McCoy, in what direction should he apply a magnetic field (into the page or out of the page)? Vbees "leaving x-axis Om 100m 200m Mr. Hatfield hive Mr. McCoy If the bees fly straight up at 0.5 m/s, and a 50 µT magnetic field is applied in the direction you indicated in part (b), what is the magnetic force that the bees experience? (Both strength and direction.) d. When the bees return to the hive they fly straight down into it. If the magnetic field is still applied in the direction of your answer to part (b), in what direction are the bees deflected?A homemade capacitor is assembled by placing two 8-in. pie pans 6 cm apart and connecting them to the opposite terminals of a 9-V battery. Part A Estimate the capacitance. Express your answer using one significant figure. 国 C = 5.74 • 10 - 10 F Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining
- QUESTION 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 f22. How much charge in coulombs is stored by a 50-μF capacitor with 20 V across its plates? A. 100 μC B. 2.5 μC C. 1 mC D. 1 μC