What was the name of nasa's first venture into manned spaceflight?
a. apollo
b. discovery
c. mercury
d. voyager

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

0 = 0.40 / 0 = 0

= 0.20 = 9.80 ⁄2 =?

=0 , = = 0.20 =0.50 0 0.40 ⁄

=0−122 =0−12(9.80 ⁄2)(0.50)2 =1.2