Answer:
c
Explanation:
without force motion won't take place
Answer:
Part a)
Part b)
Part c)
Explanation:
Part a)
As we know that there is no external torque on the system of two twins
so here we will use
Part b)
Since angular momentum is conserved here as there is no external torque
so we will have
Part c)
Work done by both of them = change in kinetic energy
so we have
If iron were used to make coins then it would rust easily,because of its exposure to water, air etc..
Answer:
Explanation:
We can assume this problem as two concentric spherical metals with opposite charges.
We have also to take into account the formulas for the electric field and the capacitance. Hence we have
Where k is the Coulomb's constant. Furthermore, by taking into account the expression for the potential and by integrating
Hence, the capacitance is
but R1=a and R2=b
HOPE THIS HELPS!!
Answer:
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Explanation:
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