hurriquake nails help homes better withstand the damages of both earthquakes and hurricanes. the cause is largely because the la
1 answer:
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Answer:
The excess charge is
Explanation:
From the question we are told that
The diameter is
The potential of the surface is
The radius of the sphere is
substituting values
The potential on the surface is mathematically represented as
Where k is coulomb's constant with value
given from the question that there is no other charge the Q is the excess charge
Thus
substituting values
Answer:
Force, F = 500 N
Explanation:
Given that,
Power expanded, P = 1000 W
Distance moved by piano, d = 10 m
Time taken, t = 5 s
To find,
The force exerted by the person
Solution,
The rate at which the work is being done is called power delivered. Its formula is given by:
W is the work done, W = F × d
On rearranging the above formula to find F as :
F = 500 N
Therefore, the force exerted on the person is 500 N. Hence, this is the required solution.