The shock wave produced by the supernova expended from the center and is currently at the edge of the observed Cas A remnant. Using the information in the previous problem, compute the average speed of the shock wave in units of km/s. Consider the image above of theCassiopeia A (Cas A) supernovaremnant. The supernova explosion thatcaused this remnant was observed onearth about 300 years ago. It is about3000 pc away. Since that time, theshockwave from the supernova hasexpanded to form the roughly sphericalcloud pictured above. From the centerpoint to the edge of the cloud is about3 pc. Compute the angular diameter ofthe Cas A supernova remnant as viewedfrom Earth. Express your answer inarcminutes. 12:02 4Expert AnswerStep1a)The distance from the eanth of supernova Cas A is d= 3000peThe radius ef the spherical clovd P= 3 pcStep2b)supornereThe angulan diarmeter d = 20From the geometrytan@ => 9 = ten 33000» e = 0.0573°* 0 = 0-057 X 60 ancminThen engulan dimeterd = 20 = 6. g8 arcmin?

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