Moving an electron within an electric field would change the

b) 10 minutes

girls stopped for 10 minutes.

where’s the list ? the question is incomplete

because if the tool that you are using is not balanced it there would be false mass.

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