Positive charge Q=5 nC is placed on a conducting spherical shell with inner radius R1=20 cm and outer radius R2=30 cm . A particle with charge q=4 nC is placed at the center of the cavity. What is the magnitude of the electric field at a point in the cavity, a distance r=12 cm from the center? (Take Coulomb's constant k=9x10 9 N m2 /C2)
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Physics, 21.06.2019 21:00
Amarble, a bowling ball, a basketball, and a baseball are rolling across the floor at 10 m/s. which one has the greatest kinetic energy? the marble the bowling ball the basketball the baseball
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Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy
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Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.
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Astudent weighing 700 n climbs at constant speed to the top of an 8 m vertical rope in 10 s. the average power expended by the student to overcome gravity is most nearly
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Positive charge Q=5 nC is placed on a conducting spherical shell with inner radius R1=20 cm and oute...
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