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Tems11 [23]
3 years ago
6

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a

balance and a marble.
Which statement best describes what Kendall can do?
A.She can measure the volume and mass of the marble, the volume and mass of the water, and the volume and mass of the graduated cylinder.
B.She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder.
C.She can measure the volume of the marble and water, and the mass of the graduated cylinder.
D.She can measure the mass of the marble and water, and the volume of the graduated cylinder.
Physics
2 answers:
gtnhenbr [62]3 years ago
6 0

Answer:

The answer is B

Explanation:

Elis [28]3 years ago
4 0
The answer is B.
She can measure the mass of the water, marble and the graduated cylinder with the balance.
The volume of the water can be shown on the marked graduated cylinder, the volume of the marble can be measured by the volume difference of the water before and after the marble is put in.
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Answer:

E=29\times 10^{-5}eV

Explanation:

For n-=1 state hydrogen energy level is split into three componets in the presence of external magnetic field. The energies are,

E^{+}=E+\mu B,

E^{-}=E-\mu B,

E^{0}=E

Here, E is the energy in the absence of electric field.

And

E^{+} and E^{-} are the highest and the lowest energies.

The difference of these energies

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\mu=9.3\times 10^{-24}J/T is known as Bohr's magneton.

B=2.5 T,

Therefore,

\Delta E=2(9.3\times 10^{-24}J/T)\times 2.5 T\\\Delta E=46.5\times 10^{-24}J

Now,

Delta E=46.5\times 10^{-24}J(\frac{1eV}{1.6\times 10^{-9}J } )\\Delta E=29.05\times 10^{-5}eV\\Delta E\simeq29\times 10^{-5}eV

Therefore, the energy difference between highest and lowest energy levels in presence of magnetic field is E=29\times 10^{-5}eV

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