BLACK HOLE A black hole is a theoretical region of space in which the gravitational field is so powerful that nothing, not even electromagnetic radiation (e.g. visible light), can escape its pull after having fallen past its event horizon. The term derives from the fact that the absorption of visible light renders the hole's interior invisible, and indistinguishable from the black space around it. . The idea of an object with gravity strong enough to prevent light from escaping was proposed in
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1. The term Zodiac refers to C) a group of constellations lying near the ecliptic. ----------- 2. You have just won 100 million dollars on that hit TV survival show ``Astronomy Midterm No. 1''. How much money is this? A) \$10$^8$ ----------- 3. In current scientific opinion, Stonehenge is considered to have been D) an astronomical observatory. ----------- 4. You have just won $10^4$ dollars on that hit TV survival show ``Astronomy Midterm No. 1''. How much money is this in real
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are many black holes in our universe. They are spaces, having an intense gravitational field where no matter or radiation can escape. The question is, how do black holes form? How big or small can black holes be? Can a black hole destroy our planet Earth? Lastly how are our scientists studying the black holes so we know nothing will go wrong? A black hole will not let anything inside it escape due to the powerful gravitational force. Scientists believe that the smallest black hole was formed when
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too cold/ also controls composition of planet * Terrestrial Planets- Mercury, Venus, Earth, Mars, Asteroid Belt (all relatively small and rocky) * Jovian Planets- Jupiter, Saturn, Uranus, Neptune (huge and gaseous) 4. Size- Dictates gravitational pull (larger body= more gravity)/ gravity holds in atmosphere/ 2 most abundant gasses are hydrogen and helium/ cooling rate of planet- over time interior of planets cool down (smaller planet cools quicker, larger planet cools slower) 5. Presence
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PhysRozz Midterm 2012 1. Which is not a vector quantity? 1) electric charge 2) displacement 5. As the angle between two concurrent forces decreases, the magnitude of the force required to produce equilibrium 1) decreases 3) velocity [via06-07] 2) increases 3) remains the same 4) magnetic field strength 2. An astronaut standing on a platform on the Moon drops a hammer. If the hammer falls 6.0 meters vertically in 2.7 seconds, what is its acceleration? 6. A child
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2014 Contents Static and Current Electricity .............................................................................................................. 2 Properties of Waves ........................................................................................................................... 12 Uses of Waves..................................................................................................................................... 13 Forces, Moments and Pressure...........
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Waves Waves are generated by wind blowing over the sea. The characteristics of waves are determined by the strength of the wind, its duration and fetch (distance a wave travels). The stronger the wind the greater the friction on the surface of the sea and therefore the bigger the wave. Constructive waves Constructive waves are flat and low in height and have a long wave length. Their strong swash carries material up the beach, forming a berm. They have a low frequency of between 6 and 8 waves per
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Astronomy 2B03: Lecture 2: What’s Out There? * Objects in the universe come in a hierarchy of scales and sizes: * Planets * Stars * Galaxies * The universe as a whole * These scales are so different from one step to the next that they are incredibly hard to comprehend all at once – no “everyday” experience to refer them to * If the Earth were a basketball how big would the moon be? Tennis ball * How many Earths would fit into the Sun? ~ 1 million
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The ocean can produce two types of energy: thermal energy from the sun's heat, andmechanical energy from the tides and waves. Oceans cover more than 70% of Earth's surface, making them the world's largest solar collectors. The sun's heat warms the surface water a lot more than the deep ocean water, and this temperature difference creates thermal energy. Just a small portion of the heat trapped in the ocean could power the world. Workers install equipment for an ocean thermal energy conversion
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aman Research Institute (RRI) is an institute of scientific research located in Bangalore, India. It was founded by Nobel laureate C. V. Raman. Although it began as an institute privately owned by Sir C. V. Raman, it is now funded by the government of India. Contents * 1 Research * 2 History * 3 Achievements * 4 External links | Research The main areas of research are: * Astronomy and Astrophysics * Liquid Crystals * Theoretical Physics * Optics History Much before Raman
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