A story that ends "had I know"​

When she was about five years old, her mother started to have a relationship with a man - a man she refers to as "Dan" in this story. Rosavella enjoyed spending time with Dan. He would play with her and her sister, buy them gifts and join them on vacations. At first, Dan treated Rosavella and her sister as if they were his own children, and Rosavella's mother was so happy to have found a father figure for them - a perfect family.

Overtime, Rosavella's relationship with Dan dramatically changed. He would come into her room late at night, and he would do inappropriate things to her. He would stare at her, touch her arms and waist, and make her feel incredibly uncomfortable. But because Rosavella was so young, she believed Dan when he told her he was just tucking her in and saying goodnight.  

One specific time, Dan took Rosavella into his room. He put her on the bed and began touching her inappropriately. She screamed out and squealed so loudly that her sister ran in, but by the time she entered the room, Dan began tickling her to cover up his horrendous actions.  

Eventually, Rosavella's sister found out what Dan was really doing. Her mom was completely devastated and took Rosavella to the police station, and they soon realized that what Dan was doing was illegal. They went to trial, but because there wasn't enough evidence, Dan was able to go free.  

Rosavella's experience with abuse deeply affected her. She received counselling, but it caused her to have panic attacks and nightmares. She wishes that she had been more aware of what Dan was doing to her when she was younger. When she looks back on the past, she could say to herself, "I was hurt by someone I thought I could trust." However, she is taking a positive approach by vowing to help other people who may be going through a similar situation. She is strong and resilient, and she wants to share her story with the world to educate others.Now she wishes that she hadn't trusted him.

Explanation:

pure substance: iron,copper

impure substance: water,charcoal

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current