Answer:
The speed of the star is 
Explanation:
Spectral lines will be shifted to the blue part of the spectrum if the source of the observed light is moving toward the observer, or to the red part of the spectrum when it is moving away from the observer (that is known as the Doppler effect).
The wavelength at rest is 121.6 nm (
)
Due to that shift the velocity of the star can be determined by means of Doppler velocity.
(1)
Where 
is the wavelength shift, 
is the wavelength at rest, v is the velocity of the source and c is the speed of light.
In this case 
is equal to 120.2 nm.
Hence, the speed of the star is .
Notice that the negative velocity means that the star is moving toward the observer.
The chip, during the collision, has a change in momentum:
Δp = m · (v₂ - v₁)
The final speed is equal to zero, since it sticks to the spacecraft, therefore:
Δp = m · v
= 1.6×10⁻⁷ · 3×10³
= 4.8×10⁻⁴ kg·m/s
where we transformed the mass into the proper units of measurement (kg).
This change in momentum is equal to the impulse J:
Δp = J = F · t
We can solve for F
F = J / t = <span>Δp / t
= </span>4.8×10⁻⁴ / 6×10⁻⁸
= 8.0×10³ N
Hence, <span>the force exerted by the chip on the spacecraft is F = 8000N.</span>
Cacu. H2SO.chemical properties related to the used in chemical property
