No, you do no need to. 2.0 and 4.0 are independent versions.
Not necessarily. The net force being 0 means the object is in translational equilibrium, but the net torque can still be non-zero if there are unbalanced forces causing rotation.
No an electron does not have a net charge of 0, in fact it has a net charge of -1.
0; zero net force
The net force on an object at rest is 0.
0
Net force is 0
Net force is 0
The ISBN of Islands in the Net is 0-877-95952-8.
When an exception occurs in program execution. Such as 1/0 or divide by zero exception. The program must catch the exception or the program will crash. Although handling of the exception or solution is not necessary.
search it on net :0
EF=0 means when the net force on something is 0 (zero).
When forces are balanced, the net force is zero.