Light and Fundamental Forces Astronomy Scale and History of the Universe Light and Fundamental Forces Questions Does gravitational force get weaker with distance? How strong is gravitational force? How does cosmic background radiation change the universe? How does gravity affect the universe? What does red shift mean? When looking at a spectrum of light from a star, how can we tell that the light has undergone red shift (or blue shift)? What is redshift and blueshift? What is the redshift of the CMB surface? What is the redshift of the Andromeda galaxy? How do scientists know that there is redshift from a star going away and EM waves have changed lengths? How does redshift differ from blueshift? What does redshift imply? What is redshift theory? How is redshift calculated? How does a gravitational redshift differ from a doppler shift? How does redshift depend on speed? How redshift is measured? What is meant by electromagnetic radiation? How does electromagnetic radiation affect bees? How does electromagnetic radiation affect our lives? How does electromagnetic radiation affect plants? How does electromagnetic radiation affect plants? How does electromagnetic radiation affect the body? How does electromagnetic radiation change atoms and molecules in the upper atmosphere? How does electromagnetic radiation change its wavelengths? How does the wavelength of electromagnetic radiation change as its frequency decreases? How does the wavelength of electromagnetic radiation differ from its frequency? How is electromagnetic radiation dangerous? Why is electromagnetic radiation important? How is electromagnetic radiation produced on the sun? How is electromagnetic radiation used? How is electromagnetic radiation used in communication? How is electromagnetic radiation used to provide information about the universe? What is electromagnetic radiation composed of? What is the electromagnetic radiation spectrum? What is electromagnetic radiation used for? How does gravity work in space? How does the sun have gravity? Is gravity a law or theory? What is difference between gravitational force and magnetic force? Why do objects with mass attract? Why would an object with mass dent space and time? What allows gravity to pull in on things without using energy? If a large mass puts a dent in the fabric of space and causes things to move toward it how do you explain the tilt in orbits? How did scientists invent artificial gravity? How does gravity work in toroidal masses? How does gravity affect the bottom side of earth? How does gravity differ from other fundamental forces? How does gravity work in our solar system? How does gravity work in water? How does gravity work on the moon? What direction does gravity pull? Why does the gravity model work? What are the four fundamental forces? What is the difference between fundamental and non-fundamental forces? Which is the strongest of the fundamental forces in the universe? Which two fundamental forces do we experience on earth? How do we know that the fundamental forces become unified as the energy of particle interactions increases? Why aren't friction and tension classified as fundamental forces? Did the four fundamental forces exist before the Big Bang? Or only after? Which of the four fundamental forces is responsible for astronomical phenomena? Which of the four fundamental forces holds the nucleus together? Which one of the four forces tend to push the nucleus apart? Why forces categorized fundamental or basic forces? Why has nobody unified the four fundamental forces? What are the key differences between them? Where are the fundamental forces found? Which of the four fundamental forces of nature is responsible for joining atoms together to form molecules? Which are the strongest and weakest fundamental forces? How do fundamental forces work in nature? How do fundamental forces affect matter? How do the fundamental forces work? How many fundamental forces are there? How many non-fundamental forces are there? How many fundamental forces are known in science? What are four fundamental forces of the universe? What are the fundamental forces in order from weakest to strongest? What causes the fundamental forces? What fundamental forces are at work inside the atom? What is a non-fundamental force? Why are fundamental forces important? Why is strong force important? Why is gravity a strong force? What is strong force? What does strong force mean? What does strong force do? How is strong force calculated? How does strong force work? What is strong fundamental force? How does strong force differ from weak force? How does strong fundamental force hold a nucleus? How do you know how strong interaction forces are? How does the strong interaction force differ from the electrical force? How strong is the force of gravity on earth? What causes strong interaction force? If gravity is intrinsically so weak compared to the strong force, why do we say that gravity rather than the strong force keeps the planets in orbit around the Sun? What is strong force and how is it related to other forces? What creates a weak or strong force? Is gravity a strong force? How much stronger is the strong force than the weak force? What would happen if the strong fundamental force suddenly ceased to exist? What about the weak fundamental force? Who discovered the fundamental forces? How strong is gravity compared to the other forces in nature? What does the weak force do? How are strong force and weak force related to the big bang? How are strong nuclear force and weak nuclear force alike? Is gravity a weak force? In astronomy, what is a weak force? What are the four fundamental forces and how are they related? How do they differ? What does weak force act upon? Can weak force be calculated? If yes, how so? How does weak force cause decay? How is weak force explained? Why is weak force important? How does weak force differ from the other fundamental forces? How does weak force cause beta decay? Why is gravity considered a weak force? Which force is most responsible for the formation of a star? What are examples of how we use electromagnetic force in research or daily life? What does the electromagnetic force do? Which is the superior power: Gravity or Electromagnetic force? What is the differences of electrostatic and electromagnetic force? What is a difference between electromagnetic and magnetic force? What are two ways that electromagnetic forces and strong nuclear forces are alike and two ways that they are different? Can gravity be an electromagnetic force? What causes electromagnetic force? Why is electromagnetic force greater then gravitational force? What is the difference between gravitational and magnetic forces? How do you find the magnitude and direction of the electric field and magnetic field? What is the difference between gravitational force and electromagnetic force? What force is the strongest out of the four forces? How does the electromagnetic force work? How can it both attract and repel? Is electrostatic force just one example of the electromagnetic force? What is electromagnetic force? How are electromagnetic forces and gravity alike? How do electromagnetic forces work? How do neutrons help with the electromagnetic forces in the nucleus? How do photons carry electromagnetic force? How do we know electromagnetic force exists? How does electromagnetic force affect matter? How does electromagnetic force contribute to the radioactivity of an atom? How does electromagnetic force keeps atoms together? How does the electromagnetic force differ from the other three forces? How many electromagnetic forces are there? How do scientists create electromagnetic force? Can electromagnetic force be decreased? What are divergent and convergent beams of light? What is the difference between nuclear force and electrostatic force? What phenomena is the weak force responsible for? What are some examples of strong nuclear force? How does the gamma function explain the strong nuclear force? What is the difference between the strong and weak nuclear forces of the universe? What are the nuclear forces made up of? What is the strongest force in the universe? How is force described? What n are the properties of nuclear forces? How does the definition of strong nuclear force differ between astronomy and physics? What creates gravity? What is an example of gravitational interaction? How does gravity differ on earth compared to other places in the universe? What is electromagnetic energy? What are common sources of concentrated electromagnetic radiation? How does electromagnetic energy travel? What causes electromagnetic energy? Where does it occur? Is sunlight is a form of electromagnetic energy? What is the difference between electromagnetic radiation and an electromagnetic field? What are some uses of electromagnetic energy? Two sources produce electromagnetic waves. Source A produces a wavelength that is three times the wavelength produced by source B. Each photon from source B has an energy of 2.1*10^-18 J. What is the energy of a photon from source A? What can cause electromagnetic energy to degrade as it travels through the air? Which is the longest wave and highest frequency from electromagnetic waves? How is light electromagnetic energy? What are electromagnetic waves composed of? How does electromagnetic energy generated from the center of the sun reach the Earth? The intensity of sunlight under the clear sky is 836 W/m2. The speed of light is 2.99792 × 108 m/s. How much electromagnetic energy is contained per cubic meter near the Earth’s surface? What is electromagnetic energy that reaches Earth from the sun called? How does electromagnetic energy differ from other energy sources? How can electromagnetic energy be used? How do electromagnetic waves emit energy? How do electromagnetic waves transfer energy to matter? How do humans use electromagnetic energy? How do plants use electromagnetic energy? How do stars make electromagnetic energy? How do you calculate the energy of a photon of electromagnetic radiation? How does electrical energy differ from electromagnetic energy? How does electromagnetic energy affect the medical profession? How does electromagnetic energy change? How does the energy of a photon of electromagnetic energy change as the frequency increases? How does the frequency of electromagnetic radiation relate to its energy? How is electromagnetic energy produced? How fast do electromagnetic energy waves travel? How is electromagnetic energy measured? How much electromagnetic energy can humans sense? What is the wavelength of light? What is the wavelength of white light? What wavelengths of the light spectrum are absorbed by red pigment? Wavelengths of light from a distant galaxy are found to be 0.5% longer than the corresponding wavelengths measured in a terrestrial laboratory. At what speed is the galaxy receding? Wavelengths of light from a distant galaxy are found to be 0.44% longer than the corresponding wavelengths measured in a terrestrial laboratory. What is the speed that the wave is approaching? Why do we see different wavelengths of light as different colors? Do different colors of light travel at different speeds? Can you change the wavelength of light by putting a filter on it? What is the size of the wavelength of light in the visible range? How does red light have a larger wavelength than blue light? What wavelengths of the electromagnetic spectrum are utilized by plants for the purpose of photosynthesis? Of visible light, which color has the most energy? Which color has the least energy? What is the wavelength of an electron with a mass of 9.11 x 10^-31 kg and a speed of 2.5 x 10^6 m.s^-1.? How do you calculate the energy of light that has a wavelength of 10 cm? Why do atoms emit or absorb light of specific wavelengths? What determines the wavelength of light that can be absorbed by a pigment? How does wavelengths of light differ from other waves? Can the wavelength of light change? Does wavelength of light change during refraction? Does wavelength of light change in different mediums? How are different wavelengths of light seen? How are wavelengths of light measured? How can we measure the wavelength of light? How can you change the wavelength of light? How do wavelength of ultraviolet light affect the DNA? How do wavelengths define light? How do wavelengths of light and sound compare? Why does light refract when it passes through two different mediums having different densities? How do lenses refract light? Does a ray of light refract at the same angle as it passes through two sheets of glass of different widths? What causes light to refract? Why do light waves refract? What are two mediums that refract light? What does refraction mean in science? Why does light refract when it goes through a prism? How does the glass bend the light rays? Why does blue light refract at greater angles than red light in transparent materials? What objects refract light? What is the difference between light refraction and diffraction? Why do longer wavelengths of light refract less? Why does light refracting from water to air not follow Snell's law? How does refraction affect light? How can light refraction be used? How can refraction be used to gather light? How does refraction of light cause a rainbow to form? How can you refract light? The mass of the moon is 7.36×1022kg and its distance to the Earth is 3.84×108m. What is the gravitational force of the moon on the earth? The moon's force is what percent of the sun's force? A solid sphere of uniform density has a mass of 4.0×104 kg and a radius of 2.5 m. What is the gravitational force due to the sphere on a particle of mass 1.0 kg located at a distance of 3.00 m from the center of the sphere? How did astronomers determine the time it takes for light to travel from the sun to the earth? What is the refractive index? As a wave enters a different medium with no change in velocity what will happen to the wave? What is the difference between reflection, refraction, and diffraction? When a light wave is refracted, what happens to the light wave? The phenomena of reflection and refraction of light are explained by which nature of light? If refraction is the bending of light, what is reflection? What does light refraction refer to? How does reflection differ from refraction and diffraction? What causes refraction? If a wave hits a surface at an angle of 55 degrees, will the angle of refraction be the same as the angle of incidence or will it be perpendicular to the angle of incidence? Where are waves found in nature? What is the angle of incidence of a light wave? Why does wave refraction occur? How is wave refraction different from wave reflection? What does gravity mean? What does defying gravity mean? What does it mean to say that the gravity of the Earth is 9.8 m/s2? What does gravity look like? What does specific gravity meansand how does specific gravity related to solid materials? What does it mean when something has a high or a low center of gravity? Does gravity affect the speed of a car moving in a straight line? What does the gravity unit #m/s^2# stand for? How are the effects of gravity beneficial to human beings? What does g-force mean? What does increased specific gravity mean? What does gravity mean in flight? What does gravity mean in space? How do you calculate the frequency of light if the given wavelength of light is #400nm#? The speed of light is #c= 3 xx 10^8 m/s#? What has a higher frequency or red light or a blue light? What is calculated by speed of light/wavelength? Why doesn't the frequency of light change? A beam of light has a wavelength of 506 nanometers. What is the frequency of the light? What color is the light? What happens to the wavelength of light as the frequency increases? Are frequency and wavelength constants in terms of light? What is the frequency of light (s-1) that has a wavelength of #1.23 xx 10^-6# cm? What is the wavelength and frequency of light? Does light have a short or long wavelength compared with radio? Light with a frequency of #6.97 × 10^14 Hz# lies in the violet region of the visible spectrum. What is the wavelength of this frequency of light? Does light frequency change? Does light frequency change in water? Does light frequency change with distance? How do you calculate frequency of light? How do you calculate light frequency? How do you calculate the frequency of light if you know its wavelength? How do you calculate the frequency of red light? How do you measure frequency of light? How does frequency affect light waves? How does frequency affect visible light? How does frequency of light affect electrons? How does frequency of light affect its color? How does light have frequency? How does the frequency of light change as wavelength increases? How is wavelength related to light frequency? Can gravity bend light? If so, how? What is the difference in strength between the four fundamental forces? How were the strong and weak fundamental forces discovered? What are the four fundamental forces of nature and how can we use them in everyday life? Of the four fundamental forces in nature, which does not depend on electric charge? What is an example of each of the fundamental forces of nature? Which of the four fundamental forces allows wax to stick to a car? What are the major differences between the four fundamental forces? Which fundamental force acts over the longest distance? How is the theory of relativity related to the four fundamental forces? What is faster than the speed of gravity? Why are gravitational, electromagnetic, and nuclear forces often called fundamental or basic forces? How are the four fundamental forces related? How are the four fundamental forces similar? What are the four fundamental forces in order of strength? What are the four fundamental forces that govern the universe? Why are there only four fundamental forces? Are the strong and weak nuclear forces realistic? With an isolated hydrogen atom as an example, what would happen if the strong force suddenly ceased? What do strong nuclear force and weak nuclear force act on? What are the properties of nuclear forces? Which of the fundamental forces is so small that it has no chemical significance? What is radioactivity caused by weak nuclear force? What is the weakest force in the universe? How do we know there is such a thing as the strong nuclear force? What natural barrier tries to prevent two protons from combining? What are examples of electromagnetic force? How strong is gravity? Which of forces help protons and neutrons to stay at the center of the atom? What is the most powerful force in the world and universe? How did the four fundamental forces come to be? What is the difference between the nuclear forces and electromagnetic force? What force acts between all objects all the time? How does weak nuclear force differ from the other forces? Does weak nuclear force cause radioactivity? How do we know weak nuclear force exists? Is weak nuclear force attractive or repulsive? What is light energy? If a star is 1000 light years away, how long would it take for us to see light given off from the star? How far does light travel in one year? How many miles does light travel in one hour? How do scientists know how long it takes light to reach the earth from the sun? Does light lose speed the longer it travels through space? What will gravitational waves help astronomers study? Why is the discovery of gravitational waves important? Does the sun exert a greater force on the earth than that exerted on the sun by the earth? How does gravity affect objects in our universe? How does light affect the universe? Question #5600e Is it true, that we can see stars behind round objects because of somekind of light refraction? What are the relative strengths of the four fundamental forces? Question #5d78e What stops the stars that make the galaxy from just straying off on their own? How does eveyrthing stay together? Why are there no green stars? Why are there four fundamental forces? How ere they deduced? Question #e9ae1 Question #6a22c What powers gravity? Who invented gravity? Where did the four fundamental forces of the universe originate? What is the difference between gravitational, electromagnetic, and nuclear forces? How would you explain the four fundamental forces of the universe? How do the four fundamental forces work? What are the 4 fundamental forces of nature? What are the four fundamental forces of astronomy? How are the four fundamental forces applied in the study of astronomy? Which of the four fundamental forces is mainly responsible for contact forces? What are the four fundamental forces, and what does each of them do? What is the force that involved in the interactions that allow nuclei to decay? What is the strongest of the four fundamental forces? Why gravity is still regarded as one of the fundamental forces? Which of the four forces holds the nucleus together, and which tends to push it apart? Can you rank the four forces that affect the structure of an atom in order from the strongest to the weakest? What is the purpose of unifying the four fundamental forces of nature? What are the 4 fundamental forces of nature and what connects them together? How do they interact together? Why has no one unified the 4 fundamental forces? What are the key differences? Do the four fundamental laws of nature ever interact with each other? Does the general realtivity thoery treat the four fundamental forces of nature as fictitious as space warps? What is the force that acts over the longest distance? If gravity is one of the four fundamental forces of nature, what are the other three? Which of the four fundamental forces makes wax stick to a car? Within which time frame from the initial Big Bang do we believe all four fundamental forces of nature were united into a single force? Why are gravitational, electromagnetic, and nuclear forces often called fundamental or basic forces? What force binds electrons to the nucleus of an atom? Why are the forces often called fundamental or basic forces? Where are these forces found? How are other forces related to them? What is the force that always opposes motion? What cosmological problem is “dark energy” believed to solve? How are electromagnetism and gravity similar? What are the four natural forces characteristics? What are the three types of friction from greatest to least? How many fundamental forces are there in nature at the present time under normal conditions? Question #666a0 Why does gravity makes planets round shaped? If a planet is twice as far from the sun at aphelion than at perihelion, then the strength of the gravitational force at aphelion will be how many times the force at perihelion? Einstein showed what could be explained if photons carried quantized amounts of energy? How long does it take the the light from a star to reach earth? Which is the strongest, the strong force or gravity? Can some explain what the "Strong Force" is and how it works? 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