How many kilograms are there in a 2.00 L bottle of drinking water?
2 answers:
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Answer:
0.614 nm
Explanation:
Energy of the nth state of one dimensional infinite wall is,
Given the energy to excite an electron from ground state to first excited state is,
And the Plank's constant is,
Mass of electron,
Now the energy will of a 1 dimensional infinite wall which excite an electron from ground state to first excited state will be,
Put all the variables in above equation and rearrange it for L.
Therefore the width of the box is 0.614 nm.
Answer:
36.3 kgm2
Explanation:
According to the conservation of angular momentum, the angular momentum is preserved before and after the child grab. Since the moments of inertia increase, the angular velocity decreases.
Let I be the moment of inertia of the merry-go-round and treat the child as a point particle, his moment of inertia would be
Hence the moment inertia of the child-merry-go-round system is:
I + 55.5
From here we can apply the conservation theory