The wavelength of the h-alpha absorption line that you would detect in the star's spectrum will be 54.67 * 
nm
If the object is moving towards or away from us with some radial velocity, shifts can be observed in the location of the absorption
since, material is moving towards us a shift to shorter wavelength will be observed
shift = rest wavelength * ( radial velocity / speed of light )
= 656 * 
* (250 * 
/ 3 * 
)
= 54.67 * nm
The wavelength of the h-alpha absorption line that you would detect in the star's spectrum will be 54.67 * nm
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Answer:
162.8 K
Explanation:
initial current = io
final current, i = io/8
Let the potential difference is V.
coefficient of resistivity, α = 43 x 10^-3 /K
Let the resistance is R and the final resistance is Ro.
The resistance varies with temperature
R = Ro ( 1 + α ΔT)
V/i = V/io (1 + α ΔT )
8 = 1 + 43 x 10^-3 x ΔT
7 = 43 x 10^-3 x ΔT
ΔT = 162.8 K
Thus, the rise in temperature is 162.8 K.
Answer:
Explanation:
For circuit in resonance , inductive and capacitive reactance should be equal. Since in the given circuit , these two are not equal, the circuit is not in resonance. It does not depend upon voltage provided.
option b is correct.
With this load, the fraction of the average power, put out by the source of emf, delivered to the load can be calculated as follows
Power delivered to resistor will be 2/3 rd of total power delivered by source because resistance has value twice that of reactance of capacitor. So the correct option is .7
option D ) is correct.
Answer:
1 solar masses
Explanation:
-Sirius has to maintain equilibrium with it's companion.
-Let x be the mass of Sirius and y be the mass of it's companion.
-From the question, we know that Sirius is 2.35 times heavier than it's companion:
Hence, the mass of it's companion is 1 solar masses
