The gravitational force exerted on a particle outside a sphere ...

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The gravitational force exerted on a particle outside a sphere with a spherically symmetric mass distribution is the same as if the entire mass of the sphere was concentrated at its center.
 
  Indicate whether the statement is true or false

Question 2

An inductor has a current I = 0.5A cos( 275 s-1 ) t . The maximum emf across the inductor is equal to 0.5 V. What is the self-inductance of the inductor?
 
  A)
 
  4.37 mH
  B)
 
  3.64 mH
  C)
 
  2.75 mH
  D)
 
  0.73 mH
  E)
 
  1.43 mH

[C.mcnichol98]

Answer to Question 1

TRUE

Answer to Question 2

B

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TYSM

[DylanD1323]

Gracias!