Explanation:
(a) Formula to calculate the density is as follows.

= 
= 
Now, calculate the charge as follows.

= 
=
C
or, = 101.06 nC
(b) For r = 6.50 cm, the value of charge will be calculated as follows.

= 
= 7.454 
Both believe that an atom contains negative charges and positive charges.
But both were different in the placement of charges
The object that goes through chemical change, changes completely to where you can not change it back to its original form. Physical change you can undo
Answer:
?Tension in string 2, T2 (in Newton) =
Answer for part 2
Hhgeppp plzzz
Answer:
a luminous ball of plasma