Author Question: An atomic nucleus has a charge of +40e. An electron is 10-9 m from the nucleus. What is the force on ... (Read 132 times)

strangeaffliction · **on:** Jul 29, 2018

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 · **Reply #1 on:** Jul 29, 2018

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.