Astr 102 exam Study guides, Class notes & Summaries

ASTR 102 Exam Questions With All Correct Answers Current Update We have learned that the centre of the milky way contains a very massive black hole. We developed this understanding by: - Answer -Monitoring the orbital motions of many individual stars in the very central parts of the Milky Way If the sun were to be squashed down small enough to become a black hole, then: - Answer -The planets in the solar system would orbit the Sun in unchanged fashion (but would receive no light from it) ...

ASTR 102 Exam Questions With Correct Answers Current Update Which of the following statements about light focusing is not true? A) In a healthy eye, light is focused on the retina. B) Film should be placed at the focal plane in a camera. C) If you try to look at an image that is not formed at the focal plane, it will be blurry. D) The focal plane of a reflecting telescope is always located within a few inches of the primary mirror. - Answer -D) The focal plane of a reflecting telescope...

ASTR 102 Exam Questions With Answers 2024 New Update What is wavelength? - Answer -Distance between two crests What is amplitude? - Answer -Distance between crest and resting position What is period? - Answer -Time between one crest and the next one What is the frequency of a wave? - Answer -Number of oscillations that pass by per second (1/Period) How do you calculate wave speed? - Answer -wavelength x frequency Electric field and magnetic field oscillate in the same direction...

Consider a spectroscopic binary star system in which the spectra of both stars are observed. If Star A is more massive than Star B, which star has the greater orbital velocity? a) Star A b) Star B c) They both have the same velocity d) The star that is closest to the center of mass e) It depends on where they are in their orbits - Consider a spectroscopic binary star system in which the spectra of both stars are observed. If Star A is more massive than Star B, which star has the greater o...

What are the Milky Way Galaxy's spiral arms? - The spiral arms are places where stars are formed from clouds of gas and dust Where are you in the Universe? If you had to give directions to your location in the Universe, what directions would you give? - We are the third planet away from the Sun. Our Solar System is located in one of the spiral arms of the Milky Way Galaxy, one within the Local Group of galaxies Why do astronomers now label Pluto a "dwarf planet"? - Due to its small size ...

ASTR 102 Exam Questions All Correctly Answered New Verified Edition Expression - Answer -Artistic movement that aspired to represent inner experience, explore the worlds of psyche, and to render visible the stressful emotional life of the modern person—isolated -represents the tormented feelings of people stuck in world of pain + conflict Second Viennese School: - Answer -Arnold Schoenberg, Anton Webern, and Alban Berg. Arnold Webern - Answer -Best know for his atonal and twelve tone...

Which of the following statements about light focusing is not true? A) In a healthy eye, light is focused on the retina. B) Film should be placed at the focal plane in a camera. C) If you try to look at an image that is not formed at the focal plane, it will be blurry. D) The focal plane of a reflecting telescope is always located within a few inches of the primary mirror. - D) The focal plane of a reflecting telescope is always located within a few inches of the primary mirror. Suppose t...

ASTR 102 Midterm Exam Questions | 100% Correct Answers | Verified | Latest 2024 Version

D) the same no matter how or where you measure the object's weight. - The mass of an object is A) the same as the weight of the object. B) larger than the weight of the object. C) unrelated to the weight of the object. D) the same no matter how or where you measure the object's weight. A) halved. - If an object's velocity is halved, its momentum is A) halved. B) unchanged, C) doubled D) quadrupled E) dependent on its acceleration.

Human technology seems on the verge of providing something on earth that the stars use all the time: thermonuclear reactions. This would give us a virtually inexhaustible supply of energy, but we face one particularly difficult problem namely: - we need to contain the hot hydrogen somehow. Since it has to be a temperature of several million degrees, ordinary material containers will not do it When we speak of the 'uniform' expansion of the universe - the behaviour is best understood as a ...