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Author Question: Two 100-W light bulbs of fixed resistance are to be connected to an ideal 120-V source. What are the ... (Read 12 times)

colton

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on: Jul 29, 2018
Two 100-W light bulbs of fixed resistance are to be connected to an ideal 120-V source. What are the current, potential difference, and dissipated power for each bulb when they are connected
 
  (a) in parallel (the normal arrangement)?
  (b) in series?

Question 2

A small 175-g ball on the end of a light string is revolving uniformly on a frictionless surface in a horizontal circle of diameter 1.0 m.
 
  The ball makes 2.0 revolutions every 1.0 s.
  (a) What are the magnitude and direction of the acceleration of the ball?
  (b) Find the tension in the string.


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batool

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Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 0.83 A in each; 120 V for each; 100 W in each (200 W total)
(b) 0.42 A in each; 60 V for each; 25 W in each (50 W total)

Answer to Question 2

(a) 79.0 m/s2 toward the center of the circle (b) 13.8 N


colton

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Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

shailee

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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