Ap Physics 2002 Answers
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AP® Physics C
2002 Free response Questions
The materials included in these files are intended for use by AP teachers for course and exam preparation in the classroom; permission for any other use must be sought from the Advanced Placement Program®. Teachers may reproduce them, in whole or in part, in limited quantities, for face-to-face teaching purposes but may not mass distribute the materials, electronically or otherwise. These materials and any copies made of them may not be resold, and the copyright notices must be retained as they appear here. This permission does not apply to any third-party copyrights contained herein.
These materials were produced by Educational Testing Service® (ETS®), …show more content…
A rod of uniform linear charge density ( = +1.5 x 10-5 C/m is bent into an arc of radius R = 0.10 m. The arc is placed with its center at the origin of the axes shown above. a. Determine the total charge on the rod. b. Determine the magnitude and direction of the electric field at the center O of the arc. c. Determine the electric potential at point O.
A proton is now placed at point O and held in place. Ignore the effects of gravity in the rest of this problem.
d. Determine the magnitude and direction of the force that must be applied in order to keep the proton at rest.
e. The proton is now released. Describe in words its motion for a long time after its release.
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2002E2. Your engineering firm has built the RC circuit shown above. The current is measured for the time t after the switch is closed at t = 0 and the best-fit curve is represented by the equation I(t) = 5.20 e-t/10, where I is in milliamperes and t is in seconds.
a. Determine the value of the charging voltage Vo predicted by the equation.
b. Determine the value of the capacitance C predicted by the equation.
c. The charging voltage is measured in the laboratory and found to be greater than predicted in part
AP® Physics C
2002 Free response Questions
The materials included in these files are intended for use by AP teachers for course and exam preparation in the classroom; permission for any other use must be sought from the Advanced Placement Program®. Teachers may reproduce them, in whole or in part, in limited quantities, for face-to-face teaching purposes but may not mass distribute the materials, electronically or otherwise. These materials and any copies made of them may not be resold, and the copyright notices must be retained as they appear here. This permission does not apply to any third-party copyrights contained herein.
These materials were produced by Educational Testing Service® (ETS®), …show more content…
A rod of uniform linear charge density ( = +1.5 x 10-5 C/m is bent into an arc of radius R = 0.10 m. The arc is placed with its center at the origin of the axes shown above. a. Determine the total charge on the rod. b. Determine the magnitude and direction of the electric field at the center O of the arc. c. Determine the electric potential at point O.
A proton is now placed at point O and held in place. Ignore the effects of gravity in the rest of this problem.
d. Determine the magnitude and direction of the force that must be applied in order to keep the proton at rest.
e. The proton is now released. Describe in words its motion for a long time after its release.
[pic]
2002E2. Your engineering firm has built the RC circuit shown above. The current is measured for the time t after the switch is closed at t = 0 and the best-fit curve is represented by the equation I(t) = 5.20 e-t/10, where I is in milliamperes and t is in seconds.
a. Determine the value of the charging voltage Vo predicted by the equation.
b. Determine the value of the capacitance C predicted by the equation.
c. The charging voltage is measured in the laboratory and found to be greater than predicted in part