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Author Question: Three capacitors have capacitances C1 < C2 < C3 . If these capacitors are connected in series, ... (Read 55 times)

bobbie

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Three capacitors have capacitances C1 < C2 < C3 . If these capacitors are connected in series, which of the following is true for the resulting equivalent capacitance?
 a. Ceq < C1
  c. Ceq = (C1 + C2 + C3)/3
  b. Ceq > C3
  d. None of the above is always correct.

Question 2

A 3.0-m rod is pivoted about its left end. A force of 10 N is applied perpendicular to the rod at a distance of 1.2 m from the pivot causing a ccw torque, and a force of 5.2 N is applied at the end of the rod 3.0 m from the pivot. The 5.2-N force is at an angle of 30o to the rod and causes a cw torque. What is the net torque about the pivot? (Take ccw as positive.)
 a. 18 Nm
  c. 4.2 Nm
  b. -18 Nm
  d. -4.2 Nm



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Viet Thy

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Answer to Question 1

A

Answer to Question 2

C




bobbie

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)


Perkypinki

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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