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Author Question: A 0.400-kg ball approaches a very massive wall at 20.0 m/s perpendicular to wall and rebounds with ... (Read 142 times)

fbq8i

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on: Jul 29, 2018
A 0.400-kg ball approaches a very massive wall at 20.0 m/s perpendicular to wall and rebounds with 70.0 of its initial kinetic energy. What is the magnitude of the change in momentum of the wall?
 
  A)
 
  14.7 kgm/s
 
  B)
 
  13.6 kgm/s
 
  C)
 
  2.40 kgm/s
 
  D)
 
  1.31 kgm/s
 
  E)
 
  0.00 kgm/s

Question 2

A 1 mF, a 2 mF, and a 3 mF capacitor are connected in series, the combination being connected across a 9 volt battery. (a) Which capacitor has the greates charge? (b) Which capacitor has the greatest voltage?
 
  What will be an ideal response?


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Benayers

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

A

Answer to Question 2

(a) They all have the same charge.
(b) 1 mF


fbq8i

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

duy1981999

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

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