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What direction does the angular velocity vector of the Earth's rotation point toward?
The Earth's angular velocity vector due to its axial rotation points towards the north pole.
When the wavelength of a spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object and motion relative to Earth?
When the wavelength of a spectral line emitted from an object decreases, it moves toward the blue end of the visible light spectrum. This phenomenon indicates that the object is moving toward Earth, a scenario known as blue shift. Common examples include distant galaxies or stars that are moving closer to us.
What is the color of spectrograph as objects move forward or away from the objects?
As objects move away from an observer, their light is redshifted, meaning the spectral lines shift toward the red end of the spectrum, indicating longer wavelengths. Conversely, when objects move closer, their light is blueshifted, with spectral lines shifting toward the blue end of the spectrum, indicating shorter wavelengths. This phenomenon is primarily due to the Doppler effect, which affects how we perceive the wavelength of light from moving objects.
Which force pulls objects in toward the center of a circle?
The centripetal force is responsible for pulling objects toward the center of a circle as they move in a curved path. This force acts perpendicular to the velocity of the object, keeping it on a circular trajectory.
Using the Doppler effect astronomers can determine a stars what?
How close and far something is from you.
When the wavelengths of spectral lines emitted from an object decreases with end of the visible light spectrum as it moves toward?
When the wavelengths of spectral lines emitted from an object decrease toward the end of the visible light spectrum, it indicates that the object is moving toward the observer, a phenomenon known as the blue shift. This occurs due to the Doppler effect, where the frequency of light waves increases as the source approaches the observer. Consequently, the emitted light shifts toward shorter wavelengths, which can provide information about the object's velocity and motion in space.
What can astronomers learn about the stars motion based on wavelength shifts?
They can determine how fast the star is moving toward or away from us. The chemical spectral signature is used to determine the Doppler shift of the visible light reaching us. This is then used to calculate how fast we and the star in question are moving toward or away from each other.
What does it mean when a spectral line shifts?
When a spectral line shifts, it means that the light emitted or absorbed by an object is either moving toward or away from us. This shift is called a Doppler shift and can provide information about the velocity of the object relative to the observer.
Why would the star Sirius find that its spectral lines are blue shifted?
The spectral lines of Sirius are blueshifted because the star is moving more or less toward us.
How do astronomers determine the speed at which a galaxy is moving?
By examining its spectrum, and identifying absorption lines in it. Lines are shifted toward shorter wavelength if the object is moving towards us. They're shifted toward longer wavelength if the object is moving away from us.
Observation of the shift of a stars spectrum toward the red or blue enables us to determine the stars?
Observation of the shift of a star's spectrum toward red indicates it is moving away from us (redshift), while blue indicates it's moving closer (blueshift). By studying this shift in the star's spectrum, we can determine its velocity and distance from Earth, providing valuable information about its motion and location in space.
When will an object falling toward earth accelerating?
at terminal velocity
What direction does the angular velocity vector of the Earth's rotation point toward?
The Earth's angular velocity vector due to its axial rotation points towards the north pole.
When a light wave bends toward the normal what does that tell you about the velocity?
It decreases.
When gravitational forces and air resistance equalize on an object that is falling toward earth and the objects stop accelerating its velocity is called the?
terminal velocity
When the wavelength of a spectral line emitted from an object decreases which end of the visible light spectrum does it move toward and what is the object and motion relative to Earth?
When the wavelength of a spectral line emitted from an object decreases, it moves toward the blue end of the visible light spectrum. This phenomenon indicates that the object is moving toward Earth, a scenario known as blue shift. Common examples include distant galaxies or stars that are moving closer to us.
What can velocity be compared with?
'Velocity' should be compared with 'speed', and it should be understood that they're different. "30 miles per hour" is a speed. "30 miles per hour toward the south" is a velocity.
