Answer:
https://www.google.com/search?q=A+metal+sphere+is+neutral+because+it+has+an+equal+number+of+protons+and+electrons.+Draw+how+the+charges+in+the+sphere+are+redistributed+when+a+negatively+charged+rod+is+brought+near+it.&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiixouw2IDiAhUIbawKHaYzBaMQ_AUIDigB&biw=1455&bih=688#imgrc=3YSBhnGs0Hz80M:
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Answer:
The electromagnetic field propagates at the speed of light (in fact, this field can be identified as light) and interacts with charges and currents.
Explanation:The electric field is produced by stationary charges, and the magnetic field by moving charges (currents); these two are often described as the sources of the field.
Answer:
Time will be 2.13 sec
Explanation:
We have given that distance r = 14.3 cm =
Coefficient of static friction 
Angular acceleration is given by 
We know that frictional force is given by 
And centrifugal force is given by 
When coin just starts moving

We know that
, here
is angular velocity
According to first equation of motion we know that

As 
so 




Answer:
Sand!
Explanation:
Water has very high specific heat, which means that it needs to absorb quite a bit of energy before its temperature starts to change. Sand has a much lower specific heat, so it needs to absorb less energy.
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The answer would be no. Both will have same charge, in both caes charge will reside on surface. In case of solid sphere it will be distributed evenly throughout. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.