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Author Question: The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is ... (Read 90 times)

lb_gilbert

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on: Jul 29, 2018
The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the mirror. If the height of the car is 1.6 m, how tall is its image?
 
  A) 2.0 cm B) 5.0 cm C) 3.0 cm D) 4.0 cm E) 0.99 cm

Question 2

A 50- resistor is placed in series with a 40-mH inductor. At what frequency will the current in this circuit lag the applied voltage by exactly 45?
 
  What will be an ideal response?


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zenzy

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

E

Answer to Question 2

0.20 kHz


lb_gilbert

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

jackie

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Reply 3 on: Yesterday
Wow, this really help

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