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What else can I help you with?
How do scientists determine the chemical makeup of the stars?
Different chemicals emit and absorb light at various wavelengths. Astronomers can look at the wavelength of light coming from stars and determine which chemicals must be present.
What must a nebula contain for the materials in it combine and form a new star?
Lots of hydrogen
What 3 things must happen to be able to see something?
1. there mush be a source of light 2.the light must strike an object 3.the light must be reflected from the object to your eye
Why does a collapsing nebula spin faster?
A collapsing nebula spins faster due to the conservation of angular momentum. As the gas and dust within the nebula contract under gravitational forces, the material moves closer to the center, reducing its radius. Since angular momentum must be conserved, this decrease in radius leads to an increase in rotational speed, similar to how a figure skater spins faster when bringing their arms closer to their body.
Stars moving away from the earth show a red shift Why?
The star is moving away from us. Therefore, the Doppler effect must be considered. The Doppler effect is waves (in this case light) will be compressed in front of a moving object and stretched behind the object. This stretching creates a long wavelength. Red light has a long wavelength (the longest of visible light), so we call this stretching red shift.
The wavelength of light used to observe an object must be ... than the object itself?
The wavelength of light used to observe an object must be shorter than the size of the object itself.
For a substance to appear white what must happen to all wavelength of light?
must be reflected
Which characteristic of a light wave must increase as the light wave passes from glass into air?
The wavelength of the light wave must increase as it passes from glass into air. This is because light travels faster in air than in glass, causing the wavelength to stretch out as the wave exits the denser medium.
Does the wavelength decrease as the frequency of wave increases?
No, the wavelength is inversely proportional to the frequency of a wave. As the frequency increases, the wavelength decreases. This relationship is described by the equation λ = c/f, where λ is the wavelength, c is the speed of light, and f is the frequency.
The wavelength of a beam of light passing through a vacuum is 420 nanometers. What is the frequency of the light beam?
You need to divide the speed of light by the wavelength. (To have consistent units, you must first either convert the speed of light to nm/second, or convert the wavelength to meters.)
How does frequency change when wavelength shortens?
As wavelength shortens, frequency increases. This is because frequency and wavelength are inversely proportional to each other according to the formula f = c/λ, where f is frequency, c is the speed of light, and λ is wavelength. When wavelength decreases, frequency must increase to maintain the constant speed of light.
Why does wavelength change during refraction?
Wavelength changes during refraction because the speed of light changes when it passes through different mediums, causing the frequency to remain constant. According to the equation c = fλ (where c is the speed of light, f is the frequency, and λ is the wavelength), when the speed of light changes, the wavelength must also change to keep the frequency constant.
Why does a light of low wavelength have high frequency?
We must keep in memory the following formula connecting wave velocity, wave frequency and wavelength. Namely, c = v l v is nu - frequency and l - lambda the wavelength Since for a constant value of wave velocity, v and l are inversely related. So as wavelength is low, then its frequency goes higher.
At what wavelength value does potassium stop emitting electrons when it is flashed with light?
The work function of potassium is 2.26 eV. Therefore a light wavelength must be at least 2.26 times 1.6 times 10 to the negative 19th power J to remove electrons.
What is the frequency of Ne if wavelength 14.160 angstrom?
I assume you are talking about an electromagnetic wave; in this case, divide the speed of light (300,000,000 meters per second) by the wavelength. You must first convert the wavelength to meters (divide Angstrom by 1010).
Why is it difficult to demonstrate diffraction of light waves?
It is difficult to demonstrate diffraction of light waves because the wavelength of visible light is very small compared to everyday objects, making the effects less noticeable. Additionally, light waves diffract more prominently when encountering obstacles or slits that are comparable in size to their wavelength, which is not easily achieved with visible light. Finally, the precise conditions required for a clear demonstration of light diffraction, such as a coherent light source and appropriate diffraction grating, can be challenging to set up.
What is the frequency of a light wave with a wavelength of 650?
To calculate the frequency of a light wave, you can use the formula: Frequency = Speed of light / Wavelength. The speed of light is approximately 3 x 10^8 meters per second. If the wavelength is 650 nm (nanometers, which is 650 x 10^-9 meters), you can calculate the frequency using the formula.
