Answer:
Explanation:
The light from these little disks is also refracted by Earth's atmosphere, as it travels toward our eyes. That's because, in the direction of any horizon, you're looking through more atmosphere than when you look overhead. If you could see stars and planets from outer space, both would shine steadily.
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Gravity is a force because it pulls down on objects.
We use the Rydberg Equation for this which is expressed as:
<span>1/ lambda = R [ 1/(n2)^2 - 1/(n1)^2]
</span>
where lambda is the wavelength, where n represents the final and initial states. Brackett series means that the initial orbit that electron was there is 4 and R is equal to 1.0979x10^7m<span>. Thus,
</span>
1/ lambda = R [ 1/(n2)^2 - 1/(n1)^2]
1/1.0979x10^7m = 1.0979x10^7m [ 1/(n2)^2 - 1/(4)^2]
Solving for n2, we obtain n=1.
Answer:
![f_e = 1.51 cm](https://tex.z-dn.net/?f=f_e%20%3D%201.51%20cm%20)
Explanation:
given.
magnification(m) = 400 x
focal length (f_0)= 0.6 cm
distance between eyepiece and lens (L)= 16 cm
Near point (N) = 25 cm
focal length of the eyepiece (f_e)= ?
using equation
![m = -\dfrac{L-f_e}{f_o}.\dfrac{N}{f_e}](https://tex.z-dn.net/?f=m%20%3D%20-%5Cdfrac%7BL-f_e%7D%7Bf_o%7D.%5Cdfrac%7BN%7D%7Bf_e%7D)
![400 = \dfrac{16-f_e}{0.6}.\dfrac{25}{f_e}](https://tex.z-dn.net/?f=400%20%3D%20%5Cdfrac%7B16-f_e%7D%7B0.6%7D.%5Cdfrac%7B25%7D%7Bf_e%7D)
![9.6 = \dfrac{16-f_e}{f_e}](https://tex.z-dn.net/?f=9.6%20%3D%20%5Cdfrac%7B16-f_e%7D%7Bf_e%7D)
![9.6f_e = 16-f_e](https://tex.z-dn.net/?f=9.6f_e%20%3D%2016-f_e)
![f_e = 1.51 cm](https://tex.z-dn.net/?f=f_e%20%3D%201.51%20cm%20)