Answer:
Step-by-step explanation:
When A and B are brought together then they repel i.e. A and B have same charge, either negative or positive
When B and C are brought together then they also repel. This implies that nature of charge on B and C is same
Answer:
for number 7
Step-by-step explanation:
a²+b²=c²
3²+8²=c²
9+64=c²

Answer:
7.8
Step-by-step explanation:
Answer:
the sinθ is 4√17 / 53.6
Step-by-step explanation:
All the steps are on the image :)