Practice Quiz Gravitation
... kg, the mass of Earth is 5.97 × 1024 kg, and G = 6.67 × 10-11 N•m2/kg2. What is the force exerted by Venus on Earth at that point? A) 1.10 × 1018 N B) 4.62 × 1028 N C) 6.30 × 1020 N D) 1.72 × 1019 N Answer: A 2) Two identical spheres, each of mass M and radius R just touch each other. What is the ma ...
... kg, the mass of Earth is 5.97 × 1024 kg, and G = 6.67 × 10-11 N•m2/kg2. What is the force exerted by Venus on Earth at that point? A) 1.10 × 1018 N B) 4.62 × 1028 N C) 6.30 × 1020 N D) 1.72 × 1019 N Answer: A 2) Two identical spheres, each of mass M and radius R just touch each other. What is the ma ...
August 2013 - Joliet Junior College
... We are halfway through astronomical summer. The Celtic cross quarter day of Lughnasadh is on August 1st although August 6th is halfway between the first day of summer and the first day of fall. So, as to be expected, the summer sky is directly overhead at mid-evening during August. Directly above ar ...
... We are halfway through astronomical summer. The Celtic cross quarter day of Lughnasadh is on August 1st although August 6th is halfway between the first day of summer and the first day of fall. So, as to be expected, the summer sky is directly overhead at mid-evening during August. Directly above ar ...
overview - A Top Christian College in Southern California
... the faint sun paradox says that through an amazingly complex list of “coincidences,” the sun increased in luminosity at the same rate the greenhouse gases were removed from our atmosphere so Earth could maintain a life-friendly constant temp ...
... the faint sun paradox says that through an amazingly complex list of “coincidences,” the sun increased in luminosity at the same rate the greenhouse gases were removed from our atmosphere so Earth could maintain a life-friendly constant temp ...
The Motions of the Planets
... a much more precise prediction of the positions of planets than did Ptolemy's ...
... a much more precise prediction of the positions of planets than did Ptolemy's ...
X-RAY OBSERVATIONS OF SEYFERT GALAXIES The dawn of a …
... Also famous for having lost his nose in a swordfight ...
... Also famous for having lost his nose in a swordfight ...
Mechanical Systems Topics 1 and 2
... The unit used to measure ‘local distances’ in space (inside our solar system) is called an astronomical unit. One astronomical unit is equal to the average distance from the center of the Earth to the center of the Sun. The largest planet, Jupiter, is approximately … A. 5 AU’s from the Sun B. 10 AU’ ...
... The unit used to measure ‘local distances’ in space (inside our solar system) is called an astronomical unit. One astronomical unit is equal to the average distance from the center of the Earth to the center of the Sun. The largest planet, Jupiter, is approximately … A. 5 AU’s from the Sun B. 10 AU’ ...
We especially need imagination in science. It is not all mathematics
... exactly what the scientific method is! • The scientific method relies on testing and validation. Any assertion is tested (or even attacked), and only after reliable, repeatable experiments demonstrate the assertion is the assertion accepted. • Most everything presented on issues related to SETI is ...
... exactly what the scientific method is! • The scientific method relies on testing and validation. Any assertion is tested (or even attacked), and only after reliable, repeatable experiments demonstrate the assertion is the assertion accepted. • Most everything presented on issues related to SETI is ...
venus_transit - University of Glasgow
... observations were published. e.g. Thomas Hornsby (1771): 1 A.U. = 93,726,900 miles (between 90 Captain James Cook ...
... observations were published. e.g. Thomas Hornsby (1771): 1 A.U. = 93,726,900 miles (between 90 Captain James Cook ...
part2
... • Each type of radioactive nucleus decays at its own characteristic rate, called its half-life, which can be measured in the laboratory • This is the key to a technique called radioactive age dating, which is used to determine the ages of rocks • The oldest rocks found anywhere in the solar system a ...
... • Each type of radioactive nucleus decays at its own characteristic rate, called its half-life, which can be measured in the laboratory • This is the key to a technique called radioactive age dating, which is used to determine the ages of rocks • The oldest rocks found anywhere in the solar system a ...
Three hundred sextillion stars
... What is a sextillion? Have I gone crazy, or sexy? A sextillion is a number followed by 21 zeros!!! For instance, take the number 300 and add 21 zeros onto it (300,000,000,000,000,000,000,000). That’s how many stars may be in our universe. A few years back Carl Sagan’s “billions upon billions” was ...
... What is a sextillion? Have I gone crazy, or sexy? A sextillion is a number followed by 21 zeros!!! For instance, take the number 300 and add 21 zeros onto it (300,000,000,000,000,000,000,000). That’s how many stars may be in our universe. A few years back Carl Sagan’s “billions upon billions” was ...
Cosmology 2 - schoolphysics
... 1. Describe the model of the Universe proposed by Copernicus 2. If the time for Jupiter to make one orbit of the Sun is 11.86 years calculate the radius of its orbit. (Mass of the Sun = 2x1030 kg and G = 6.67x10-11 Nm2kg-2) 3. Write down Kepler’s three laws of planetary motion. 4. What piece of expe ...
... 1. Describe the model of the Universe proposed by Copernicus 2. If the time for Jupiter to make one orbit of the Sun is 11.86 years calculate the radius of its orbit. (Mass of the Sun = 2x1030 kg and G = 6.67x10-11 Nm2kg-2) 3. Write down Kepler’s three laws of planetary motion. 4. What piece of expe ...
Grade 5 Science Pacing Guide 2015-2016 Quarter 2
... 5.2.2 Observe and use pictures to record how the sun appears to move across the sky in the same general way every day but rises and sets in different places as the seasons change. Big Idea: Shadows form when sunshine is blocked by a solid object and shadows change depending on the position of the su ...
... 5.2.2 Observe and use pictures to record how the sun appears to move across the sky in the same general way every day but rises and sets in different places as the seasons change. Big Idea: Shadows form when sunshine is blocked by a solid object and shadows change depending on the position of the su ...
instructor notes: week 2
... The importance of Kepler’s 3rd Law is that, as shown by Newton, the constant of proportionality for a3 = P2 contains two constants, π (pi) and G (the gravitational constant), plus the sum of the masses of the two coorbiting bodies. If one can determine orbital periods P and semi-major axes a, then ...
... The importance of Kepler’s 3rd Law is that, as shown by Newton, the constant of proportionality for a3 = P2 contains two constants, π (pi) and G (the gravitational constant), plus the sum of the masses of the two coorbiting bodies. If one can determine orbital periods P and semi-major axes a, then ...
Stargazing Rules 01162013
... Moon is shaped like a "C", it bulges to the left. 18. Even though most of the objects we observe in the night sky appear not to move in relation to each other, in reality they are all moving at great speed relative to us and to each other. They appear not to be moving because of their great distanc ...
... Moon is shaped like a "C", it bulges to the left. 18. Even though most of the objects we observe in the night sky appear not to move in relation to each other, in reality they are all moving at great speed relative to us and to each other. They appear not to be moving because of their great distanc ...
History
... events in our everyday lives. All of this is summarized in a horoscope, which includes a diagram of the zodiac, showing the precise positions of the heavenly bodies in their orbits. Is there any physical reason we should expect astrology to work, except that it might appeal to our needs? There seems ...
... events in our everyday lives. All of this is summarized in a horoscope, which includes a diagram of the zodiac, showing the precise positions of the heavenly bodies in their orbits. Is there any physical reason we should expect astrology to work, except that it might appeal to our needs? There seems ...
May 13, 2014 - In the News Story 1
... The bright Moon, practically full, shines near Saturn. The Moon creeps to within 1° to 3° of Saturn before dawn Wednesday morning for the Americas. For New Zealand and most of Australia, the Moon occults (covers and uncovers) Saturn during nighttime; map and timetables. Wednesday, May 14 Full Moon ( ...
... The bright Moon, practically full, shines near Saturn. The Moon creeps to within 1° to 3° of Saturn before dawn Wednesday morning for the Americas. For New Zealand and most of Australia, the Moon occults (covers and uncovers) Saturn during nighttime; map and timetables. Wednesday, May 14 Full Moon ( ...
Planet formation - problems and future
... starting evolution of planetary systems. The most of the authors pay attention on interaction between solid bodies (planetesimals) and gas arround existing stars. In many used methods self-gravity is not included in calculations. More interesting for us is the beginning of planet formation from unif ...
... starting evolution of planetary systems. The most of the authors pay attention on interaction between solid bodies (planetesimals) and gas arround existing stars. In many used methods self-gravity is not included in calculations. More interesting for us is the beginning of planet formation from unif ...
L53 SNOWBALL PLANETS AS A POSSIBLE TYPE OF WATER
... may limit the outer edge (1.37 AU) (Kasting et al. 1993), although the CO2 clouds could scatter infrared emitted from the planetary surface and result in warming (Forget & Pierrehumbert 1997). The outer edge might therefore further extend outward to at least 1.67 AU (the maximum greenhouse limit of ...
... may limit the outer edge (1.37 AU) (Kasting et al. 1993), although the CO2 clouds could scatter infrared emitted from the planetary surface and result in warming (Forget & Pierrehumbert 1997). The outer edge might therefore further extend outward to at least 1.67 AU (the maximum greenhouse limit of ...
The Universe - Smithsonian Education
... and how far away are the planets and stars? How did they form and when? How do they move and why? Finding answers to those questions has been the highest adventure of the human mind, and yet the questions, in essence, are those of any child looking into the sky. The lessons in this issue address the ...
... and how far away are the planets and stars? How did they form and when? How do they move and why? Finding answers to those questions has been the highest adventure of the human mind, and yet the questions, in essence, are those of any child looking into the sky. The lessons in this issue address the ...
space tech - Project Jugaad
... One of the first people to make a good measurement of the distance to a planet was the great astronomer Gian Domenico Cassini. In 1672, Cassini used a technique called parallax to measure the distance to Mars. You can understand parallax by holding your thumb up at arm's length and looking at it f ...
... One of the first people to make a good measurement of the distance to a planet was the great astronomer Gian Domenico Cassini. In 1672, Cassini used a technique called parallax to measure the distance to Mars. You can understand parallax by holding your thumb up at arm's length and looking at it f ...
Astronomy Teleclass Webinar!
... Gravitational lensing is one way we can “see” a black hole. When light leaves a star, it continues in a straight line until yanked on by the gravity of a black hole, which bends the light and change its course and shows up as streaks or multiple, distorted images on your photograph. The Kuiper Be ...
... Gravitational lensing is one way we can “see” a black hole. When light leaves a star, it continues in a straight line until yanked on by the gravity of a black hole, which bends the light and change its course and shows up as streaks or multiple, distorted images on your photograph. The Kuiper Be ...
Rotational Axis
... Each 4 years, one day is added to the month of February to make up for the 0.25 (1/4) rotation in each revolution around the sun. ...
... Each 4 years, one day is added to the month of February to make up for the 0.25 (1/4) rotation in each revolution around the sun. ...
Starry Monday at Otterbein
... The Baroque Setting • In the 1600s church through counterreformation much stricter • G. BRUNO (Italian; 1548) proposes that the Sun is just one star out of an infinite number burned at the stake for heresy 1600 ...
... The Baroque Setting • In the 1600s church through counterreformation much stricter • G. BRUNO (Italian; 1548) proposes that the Sun is just one star out of an infinite number burned at the stake for heresy 1600 ...
Chapter 16
... mention his own life and career paths. • Kepler had originally planned on becoming a priest, but was drawn into the world of science. • Furthermore, he was of the Lutheran faith, which caused him many problems throughout his life, since Germany was part of the Holy Roman Empire until its dissolution ...
... mention his own life and career paths. • Kepler had originally planned on becoming a priest, but was drawn into the world of science. • Furthermore, he was of the Lutheran faith, which caused him many problems throughout his life, since Germany was part of the Holy Roman Empire until its dissolution ...
Astrobiology
Astrobiology is the study of the origin, evolution, distribution, and future of life in the universe: extraterrestrial life and life on Earth. This interdisciplinary field encompasses the search for habitable environments in our Solar System and habitable planets outside our Solar System, the search for evidence of prebiotic chemistry, laboratory and field research into the origins and early evolution of life on Earth, and studies of the potential for life to adapt to challenges on Earth and in outer space. Astrobiology addresses the question of whether life exists beyond Earth, and how humans can detect it if it does. (The term exobiology is similar but more specific—it covers the search for life beyond Earth, and the effects of extraterrestrial environments on living things.)Astrobiology makes use of physics, chemistry, astronomy, biology, molecular biology, ecology, planetary science, geography, and geology to investigate the possibility of life on other worlds and help recognize biospheres that might be different from the biosphere on Earth. The origin and early evolution of life is an inseparable part of the discipline of astrobiology. Astrobiology concerns itself with interpretation of existing scientific data; given more detailed and reliable data from other parts of the universe, the roots of astrobiology itself—physics, chemistry and biology—may have their theoretical bases challenged. Although speculation is entertained to give context, astrobiology concerns itself primarily with hypotheses that fit firmly into existing scientific theories.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. According to research published in August 2015, very large galaxies may be more favorable to the creation and development of habitable planets than smaller galaxies, like the Milky Way galaxy. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently.Current studies on the planet Mars by the Curiosity and Opportunity rovers are now searching for evidence of ancient life as well as plains related to ancient rivers or lakes that may have been habitable. The search for evidence of habitability, taphonomy (related to fossils), and organic molecules on the planet Mars is now a primary NASA objective on Mars.