The world has a total of 7 layers
A table can be made from minerals but other kinds of solids as well
Answer:
D) The objects have the same acceleration. With no air resistance and the same gravity, the acceleration due to gravity should be the same for both objects.
Answer: 630 V
Explanation: In order to solve this problem we have to consider the potential given by:
In the region 0<a<b
V(r)= -∫E*dr where E can be calculated by Gaussian law then E= k*qa/r^2
where qa=-3 nC
then
The V(r)=k*qa/r+C C is zero since V(r=∞)=0
Finally we have
V(r)= k*qa (1/r)-(1/b)
thus V(a)= k*qa (1/a)-(1/b)
Replacing the values V(a) = 630 V, as the solid metal sphere is a equipotential object thus at the center have the same value of V that in r=a ( 630 V).
