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Which is a handy way to convert between seconds and years! In other words, there are 31.5 million seconds (roughly) in each year. a) The supernova explosion that created the Crab Nebula happened in A.D. 1054 according to historical records of the event. We are going to make an estimate for how fast the shockwave that created the nebula has been expanding. To start, we will need the total number of seconds that have passed since the supernova. As you might imagine this is a big number. Find the number of seconds by first finding the number of years then converting to seconds using the above conversion. How many seconds ago did the supernova happen? b) We can approximate the crab nebula as being roughly a sphere with a radius of 1 parsec. Using the internet or other resource, find out how many kilometers there are in 1 parsec. Let's assume the shockwave from the explosion has been moving outwards at a constant rate from the center to the edge. Then the speed of the shockwave is just given by the equation below. At how many kilometers per second has the shockwave been expanding? Distance in kilometers Speed in kilometers per second %3D Time in seconds

Which is a handy way to convert between seconds and years! In other words, there are 31.5 million seconds (roughly) in each year. a) The supernova explosion that created the Crab Nebula happened in A.D. 1054 according to historical records of the event. We are going to make an estimate for how fast the shockwave that created the nebula has been expanding. To start, we will need the total number of seconds that have passed since the supernova. As you might imagine this is a big number. Find the number of seconds by first finding the number of years then converting to seconds using the above conversion. How many seconds ago did the supernova happen? b) We can approximate the crab nebula as being roughly a sphere with a radius of 1 parsec. Using the internet or other resource, find out how many kilometers there are in 1 parsec. Let's assume the shockwave from the explosion has been moving outwards at a constant rate from the center to the edge. Then the speed of the shockwave is just given by the equation below. At how many kilometers per second has the shockwave been expanding? Distance in kilometers Speed in kilometers per second %3D Time in seconds

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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1 yr = 3.15x10 s Which is a handy way to convert between seconds and years! In other words, there are 31.5 million seconds (roughly) in each year. a) The supernova explosion that created the Crab Nebula happened in A.D. 1054 according to historical records of the event. We are going to make an estimate for how fast the shockwave that created the nebula has been expanding. To start, we will need the total number of seconds that have passed since the supernova. As you might imagine this is a big number. Find the number of seconds by first finding the number of years then converting to seconds using the above conversion. How many seconds ago did the supernova happen? b) We can approximate the crab nebula as being roughly a sphere with a radius of 1 parsec. Using the internet or other resource, find out how many kilometers there are in 1 parsec. Let's assume the shockwave from the explosion has been moving outwards at a constant rate from the center to the edge. Then the speed of the shockwave is just given by the equation below. At how many kilometers per second has the shockwave been expanding? Distance in kilometers Speed in kilometers per second = %3D Time in seconds
Transcribed Image Text:1 yr = 3.15x10 s Which is a handy way to convert between seconds and years! In other words, there are 31.5 million seconds (roughly) in each year. a) The supernova explosion that created the Crab Nebula happened in A.D. 1054 according to historical records of the event. We are going to make an estimate for how fast the shockwave that created the nebula has been expanding. To start, we will need the total number of seconds that have passed since the supernova. As you might imagine this is a big number. Find the number of seconds by first finding the number of years then converting to seconds using the above conversion. How many seconds ago did the supernova happen? b) We can approximate the crab nebula as being roughly a sphere with a radius of 1 parsec. Using the internet or other resource, find out how many kilometers there are in 1 parsec. Let's assume the shockwave from the explosion has been moving outwards at a constant rate from the center to the edge. Then the speed of the shockwave is just given by the equation below. At how many kilometers per second has the shockwave been expanding? Distance in kilometers Speed in kilometers per second = %3D Time in seconds
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