problems_26 - PHY2061 R. D. Field Chapter 26 Problems...

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PHY2061 R. D. Field Problems Chapter 26 Page 1 of 6 Q1 L/3 L Q2 P Chapter 26 Problems Problem 1: What is the magnitude ( in milliN ) and direction of the electrostatic force on a -2.0 microC charge in a uniform electric field given by x C N E ) / 100 ( = r ? Problem 2: Two point charges, +8 nanoC and -2 nanoC lie on the x-axis and are separated by 6 meters as shown in the Figure . What is the magnitude of the electric field ( in N/C ) at a point P on the x-axis a distance of 6 meters to the right of the negative charge? Problem 3: Two charges Q 1 and Q 2 are separated by distance L and lie on the x-axis with Q 1 at the origin as shown in the figure . At a point P on the x-axis a distance L/3 from Q 1 the net electric field is zero. What is the ratio Q 1 /Q 2 ? Problem 4: A particle with a charge to mass ratio of 0.1 C/kg starts from rest in a uniform electric field with magnitude, E = 10 N/C . How far will the particle move ( in m ) in 2 seconds ? Problem 5: A large insulating sheet carries a uniform surface charge of density -1.2 microC/m 2 . A proton (with a mass of 1.67x10 -27 kg ) is released from rest at perpendicular distance of 1.0 m from the sheet. How much time ( in microsec ) elapses before the proton strikes the sheet? 6 m 6 m -2 nC P +8 nC
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PHY2061 R. D. Field Problems Chapter 26 Page 2 of 6 Problem 6: At a distance of 1 meter from an isolated point charge the electric field strength is 100 N/C . At what distance ( in m ) from the charge is the electric field strength equal to 50 N/C ? Problem 7: The magnitude of the electric field 300 m from a point charge Q is equal to 1,000 N/C . What is the charge Q ( in C )? Problem 8: A neon sign includes a long neon-filled glass tube with electrodes at each end across which an electric field of 20,000 N/C . is placed. This large field accelerates free electrons which collide with and ionize a portion of the
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This note was uploaded on 05/31/2011 for the course PHY 2061 taught by Professor Fry during the Spring '08 term at University of Florida.

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problems_26 - PHY2061 R. D. Field Chapter 26 Problems...

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