A spectroscope is a device used to distribute white light into a spectrum of many different colors. A little prism inside the device divides the light into different colors of light. You look into it, and there will be numbers. The numbers you see will show you the wavelengths of light.
Answer:
Explanation:
The kinematic equation
gives the final velocity of the object given the initial velocity , the acceleration , and the distance traveled .
For our case, the object is dropped; therefore,
I.e. the initial velocity is zero. The acceleration due to gravity is
,
and the distance traveled is .
Putting the values into the equation we get:
The final velocity of the object is 44.27 m/s.
Answer:
Explanation:
It is given that,
Wavelength of hydrogen line,
Shift in wavelength,
According to Relativistic Doppler Effect, the shift in wavelength is given by :
v is the speed of star
c is the speed of light
or
v = 91.43 km/s
So, the star is moving with a speed of about 100 km/s. Hence, this is the required solution.
A is the answer: A resistor, which converts some electrical energy to thermal.
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