This shifts the star’s spectral lines toward the blue end of the spectrum. If the star is moving away from us, it’s waves are effectively stretched out when they reach earth, increasing their wavelength. This shifts the star’s spectral lines toward the red end of the spectrum.
Answer:
The current when the filament at room temperature is 11.84 A.
Explanation:
Given that,
Thermal coefficient of resistivity 
Initial temperature = 293 K
Voltage = 140 Volt
Final temperature = 2900 K
Current = 0.95 A
Suppose we find the numerical value of the current when the filament is at room temperature
So, We use the equation of resistance of a material changes with temperature
....(I)
Using ohm's law for value of resistance


Put the value of resistance in the equation (I)


Put the value into the formula


Hence, The current when the filament at room temperature is 11.84 A.
Hydrosphere - all the waters on the earth’s surface.
Answer:
Since in summer, the eastern side do not face the sunlight and hence the water in eastern pot remain cool in summer.