A system of 8 electrons, 18 protons, and 4 neutrons has a net charge of
a. 16.0 10-19 C.
b. 16.0 10-19 C.
c. 22.4 10-19 C.
d. 10.0 10-19 C.
e. 22.4 10-19 C.
Question 2
A laser beam ( = 694 nm) is incident on two slits 0.100 mm apart. Approximately how far apart (in m) will the bright interference fringes be on the screen 5.00 m from the double slits?
a. 3.47 103
b. 3.47 102
c. 3.47 104
d. 3.47 106
e. 3.47 105
