A metal sphere of radius 2.0 cm carries an excess charge of 3.0 ...

[Haya94]

A metal sphere of radius 2.0 cm carries an excess charge of 3.0 C. What is the electric field 6.0 cm from the center of the sphere? (k = 1/40 = 9.0  109 N  m2/C2 )
 
  A) 6.4  106 N/C
  B) 5.7  106 N/C
  C) 4.2  106 N/C
  D) 7.5  106 N/C
  E) 9.3  106 N/C

Question 2

A triatomic molecule is oriented as follows along the x-axis: mass m is at the origin, mass 2m is at x = a, and, mass 3m is at x = 2a. What is the moment of inertia of this molecule about the y-axis?
 
  A) 2ma2
  B) 3ma2
  C) 12ma2
  D) 14ma2

[ynlevi]

Answer to Question 1

D

Answer to Question 2

D

[Haya94]

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[ynlevi]

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