Answer:
Energy is conducted from atom to atom along the length of the iron bar.
Explanation:
Answer:
Explanation:
Given
mass of boat
mass of Person
Length of boat
Center of mass of boat and child
when child reaches another end of boat, boat is shifted by x cm
Center of mass of the system will remain the same
Equating 1 and 2 we get
Answer:
Explanation:
We are given that
Initial kinetic energy of an electron=K
Distance=d
Final velocity=v=0
Charge,q=-1e
We have to find the magnitude of electric field.
Work done=
Using the formula
Work done=
Using work energy theorem
Work done=Final K.E-Initial K.E=0-K
Work done=-K
Substitute the values
-K=-eEd
K=eEd
Hence, the magnitude of the electric field=
Because it spin so slow over the course of a whole day.