Answer:
v= 4 m/s
Explanation:
Momenutm is, by definition, the product of mass and velocity.
![p = mv](https://tex.z-dn.net/?f=p%20%3D%20mv)
Let's replace what we know and solve for whatever's left
![100 kg\cdot m/s = 25kg \cdot v \rightarrow v= 4 m/s](https://tex.z-dn.net/?f=100%20kg%5Ccdot%20m%2Fs%20%3D%2025kg%20%5Ccdot%20v%20%5Crightarrow%20v%3D%204%20m%2Fs)
Answer:
![E=29\times 10^{-5}eV](https://tex.z-dn.net/?f=E%3D29%5Ctimes%2010%5E%7B-5%7DeV)
Explanation:
For n-=1 state hydrogen energy level is split into three componets in the presence of external magnetic field. The energies are,
,
,
![E^{0}=E](https://tex.z-dn.net/?f=E%5E%7B0%7D%3DE)
Here, E is the energy in the absence of electric field.
And
are the highest and the lowest energies.
The difference of these energies
![\Delta E=2\mu B](https://tex.z-dn.net/?f=%5CDelta%20E%3D2%5Cmu%20B)
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](https://tex.z-dn.net/?f=%5CDelta%20E%3D2%289.3%5Ctimes%2010%5E%7B-24%7DJ%2FT%29%5Ctimes%202.5%20T%5C%5C%5CDelta%20E%3D46.5%5Ctimes%2010%5E%7B-24%7DJ)
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](https://tex.z-dn.net/?f=Delta%20E%3D46.5%5Ctimes%2010%5E%7B-24%7DJ%28%5Cfrac%7B1eV%7D%7B1.6%5Ctimes%2010%5E%7B-9%7DJ%20%7D%20%29%5C%5CDelta%20E%3D29.05%5Ctimes%2010%5E%7B-5%7DeV%5C%5CDelta%20E%5Csimeq29%5Ctimes%2010%5E%7B-5%7DeV)
Therefore, the energy difference between highest and lowest energy levels in presence of magnetic field is ![E=29\times 10^{-5}eV](https://tex.z-dn.net/?f=E%3D29%5Ctimes%2010%5E%7B-5%7DeV)
Answer:
the radius of the earth in himalayan region is greater than terai reagion. therefore, the value of 'g' at the poles is greater than the value of g at the equator. 12
Explanation:
plz mark as brainlist thx :)
Average velocity =
(displacement) / (time for the displacement)
and
(direction of the displacement) .
Displacement =
(distance from the start-point to the end-point)
and
(direction from the start-point to the end-point) .
When Ben is 200 meters from the corner store,
he is (500 - 200) = 300 meters from his house.
His displacement is
300 meters in the direction
from his house to the neighbor .
His average velocity is
(300/910) = 0.33 meters per second, in the
direction from his house to the neighbor .