An atomic nucleus has a charge of +40e. An electron is 10-9 m ...

[strangeaffliction]

An atomic nucleus has a charge of +40e. An electron is 10-9 m from the nucleus. What is the force on the electron?
 
  A)
 
  2.9 nN
  B)
 
  1000 C
  C)
 
  3.7 nN
  D)
 
  6.8 nN
  E)
 
  9.2 nN

Question 2

State how to draw the three rays for finding the image position due to a curved mirror.
 
  What will be an ideal response?

[elizabethrperez]

Answer to Question 1

E

Answer to Question 2

Ray 1 leaves the top of the object and is drawn such that it is parallel to the axis; therefore after reflection it must pass along a line through the focal point.
Ray 2 leaves the top of the object and is made to pass through the focal point; therefore it must reflect so it is parallel to the axis.
Ray 3 leaves the top of the object and is made to pass through the center of curvature; therefore it must reflect back on itself.

[strangeaffliction]

Excellent

[T4T]

Gracias!