Answer:
C
Explanation:
25% is two half lives.
Each half life requires 5730 years.
So two half lives requires
2
×
5730
Related questions
Answer:
0.64 m from the first charge
Explanation:
Force is given by
These forces are equal
The distance that charge should be placed is 0.64 m from the first charge
I think the answer is 3000 joules since work is force times distance.