Answer:
The observed wavelength is
(color - Red)
Explanation:
From the question we are told that
The wavelength of the emitter is ![\lambda_ e = 500 nm = 500 *10^{-9} \ m](https://tex.z-dn.net/?f=%5Clambda_%20e%20%20%3D%20500%20nm%20%20%3D%20%20500%20%2A10%5E%7B-9%7D%20%5C%20%20m)
The redshift is R = 0.4
Generally red shift is mathematically represented as
![R = \frac{ \lambda - \lambda_e }{\lambda_e}](https://tex.z-dn.net/?f=R%20%3D%20%20%5Cfrac%7B%20%5Clambda%20-%20%20%5Clambda_e%20%7D%7B%5Clambda_e%7D)
=> ![0.4 = \frac{ \lambda - 500 *10^{-9} }{500 *10^{-9} }](https://tex.z-dn.net/?f=0.4%20%20%3D%20%20%5Cfrac%7B%20%5Clambda%20-%20%20%20500%20%2A10%5E%7B-9%7D%20%7D%7B500%20%2A10%5E%7B-9%7D%20%7D)
=> ![\lambda - 500*10^{-9} = 200*10^{-9}](https://tex.z-dn.net/?f=%20%5Clambda%20-%20500%2A10%5E%7B-9%7D%20%3D%20200%2A10%5E%7B-9%7D%20%20)
=> ![\lambda = 700 *10^{-9}](https://tex.z-dn.net/?f=%20%5Clambda%20%3D%20700%20%2A10%5E%7B-9%7D)
=> ![\lambda = 700nm](https://tex.z-dn.net/?f=%20%5Clambda%20%3D%20700nm)
Answer:
255 [m].
Explanation:
1) the formula is (d - requred distance, V₀ - initial velocity, t - elapsed time, a - deceleration):
![d=V_0t+\frac{at^2}{2};](https://tex.z-dn.net/?f=d%3DV_0t%2B%5Cfrac%7Bat%5E2%7D%7B2%7D%3B)
2) according to the formula above the required distance is:
d=10*30-0.5*0.1*900=300-45=255 [m].
Answer:
Explanation:H2 which is mean 2 atoms of hydrogen
A. Radioactive decay does not result in heat. Gravity also does not result in heat. In the Earth's mantle, it is highly unlikely that the radiation from the sun would reach that deep into the earth.