A sphere has a charge of q=9.55μC.q=9.55μC. How many electrons need to be added to/removed from the initially neutral sphere to give this charg

Sunday, 12 August 2018

6:07 PM

Untitled picture.png Machine generated alternative text:
Question: 
part 1) 
A sphere nas a charge of q 
-5.96e13 
9.55gC. How many electrons need to be added to/removed trom the initially neutral sphere to give this charge? 
electrons added (give a negative number it removed) 
Your last answer was interpreted as follows: —5.96e + 13 
part 2) 
When üo materials are rubbed together the friction will otten cause one to lose electrons while the other gains electrons. The tribo electric series describes which materials tend to lose (positive 
rank) and gain (negative) electrons. It can be written as: 
TRIBO ELECTRIC SERIES 
MOST POSITIVE 
MOST NEGATIVE 
Hair 
Glass 
Silk 
Wool 
Wood 
Silicon 
Ebonite 
It hair is rubbed against silicon, which material gains electrons? 
Silicon 
part 3) 
Hair is quickly rubbed against wood gaining a charge of +2.77"C. What is the charge on the wood immediately atter the rub? 
-2.77 
q 
Your last answer was interpreted as follows: 
Check 
—2.77 

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Correct answer, well done. 
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Feedback tor Part 2) 
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Feedback tor Part 3) 
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Ink Drawings
Ink Drawings


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Correct answer, well done. 
Feedback tor Part 1) 
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Feedback tor Part 2) 
You have correctly answered this part 
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Feedback tor Part 3) 
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