1.1.1 Momentum [QB]Questions 1 What is the momentum of: a b a plane of mass 2 105#kg flying at 270#m#s−1? a horse of mass of 400#kg carrying a rider of mass 75#kg, galloping…

1. BIG BANG COSMOLOGYThe Big Bang Model is a broadly accepted theory for the origin and evolution of ouruniverse. It postulates that 12 to 14 billion years ago, the portion…

1. No mark scheme available 2. The list gives some quantities and units. Underline those which are base quantities of the International (SI) System of units. coulomb Define…

1. The gravitational field strength on the surface of the Earth is g. The gravitational field strength on the surface of a planet of twice the radius and the same density…

1. Are You at Rest?JackDempsey 2. Our Solar System• Our Solar System orbits our Galaxy, the Milky Way• Our Galaxy is part of the Local Group of Galaxies• Galaxies exist…

Slide 1Cosmology GREAT WEB RESOURCE: http://www.astro.ucla.edu/~wright/cosmolog.htm http://www.astro.ucla.edu/~wright/cosmolog.htm Contains a cosmological calculator A tutorial…

Slide 1Datename/org/meeting1 Ontology Usage I.Edward Shaya, Brian Thomas, Zenping Huang, Peter Teuben University of Maryland T HE US N ATIONAL V IRTUAL O BSERVATORY Slide…

Slide 1Crab Days Roma 16- 17 October 2008 1 PolarixTeam X-Ray Polarimetry Programs in Italy Enrico Costa IASF-INAF Roma Slide 2 Crab Days Roma 16- 17 October 2008 2 PolarixTeam…

Slide 1Astrophysics Literature: http://www.aldebaran.cz/~zacek/http://www.aldebaran.cz/~zacek/ … this presentation http://www.aldebaran.cz/astrofyzika/http://www.aldebaran.cz/astrofyzika/…

1.5.3The Milky Way and Other Galaxies2. How Many Galaxies Exist?When astronomers chose a relatively empty spot on the sky near the Big Dipper and used the Hubble Space Telescope…