I recently got a new physics teacher and not only does she hate me, she cannot teach to save her life. I have a webassign due in a few hours and i know i'll fail it because I don't understand any of it. Please help with these and explain how you got the answer? THANK YOU
1) A piece of scotch tape is smoothed over a table surface and then pulled off. 4.1x104 are removed from the piece of tape. What is the charge produced on the tape in Coulombs?
Is this charge positive or negative? Explain how you know.
2)A light ball painted with metal paint is attached to a long string. The ball is normally neutral. The ball as all matter is made up of atoms containing a nucleus (protons and neutrons) and electrons. In terms of these component particles, what does "neutral" mean?
The neutral ball is brought close to a Van de Graaff generator without touching the dome. The neutral ball is attracted to the dome of the generator and moves toward the dome until it touches the dome. After touching the dome briefly, the ball is repelled from the generator.
Explain why the neutral ball is attracted to the negatively charged dome.
Explain why the ball is repelled from the dome after touching it.
Now let the ball acquire a charge of -4.7x10-6 Coulombs.
How many electrons are needed to make up this charge?
Were these electrons transferred from the generator to the ball or from the ball to the generator? Explain.
3) On a dry day, just after washing your hair to remove natural oils and drying it thoroughly, run a plastic comb through it. Small bits of paper will be attracted to the comb. Explain why.
4)Each of three objects carries a charge. As the drawing shows, objects A and B attract each other, and objects C and A also attract each other. Which one of the following statements concerning objects B and C is true?
They attract each other.
They repel each other.
They neither attract nor repel each other.
1) A piece of scotch tape is smoothed over a table surface and then pulled off. 4.1x104 are removed from the piece of tape. What is the charge produced on the tape in Coulombs?
Is this charge positive or negative? Explain how you know.
2)A light ball painted with metal paint is attached to a long string. The ball is normally neutral. The ball as all matter is made up of atoms containing a nucleus (protons and neutrons) and electrons. In terms of these component particles, what does "neutral" mean?
The neutral ball is brought close to a Van de Graaff generator without touching the dome. The neutral ball is attracted to the dome of the generator and moves toward the dome until it touches the dome. After touching the dome briefly, the ball is repelled from the generator.
Explain why the neutral ball is attracted to the negatively charged dome.
Explain why the ball is repelled from the dome after touching it.
Now let the ball acquire a charge of -4.7x10-6 Coulombs.
How many electrons are needed to make up this charge?
Were these electrons transferred from the generator to the ball or from the ball to the generator? Explain.
3) On a dry day, just after washing your hair to remove natural oils and drying it thoroughly, run a plastic comb through it. Small bits of paper will be attracted to the comb. Explain why.
4)Each of three objects carries a charge. As the drawing shows, objects A and B attract each other, and objects C and A also attract each other. Which one of the following statements concerning objects B and C is true?
They attract each other.
They repel each other.
They neither attract nor repel each other.
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