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Title: An observer measures the North Star (Polaris) at an altitude of 70. The observer's latitude is Post by: tameeka314 on Feb 23, 2018 An observer measures the North Star (Polaris) at an altitude of 70. The observer's latitude is
a. 25N. b. 20N. c. 105N. d. 70N. e. none of these. [Ques. 2] Which of the following has the lowest thermal conductivity? a. Glass b. Iron c. Wood d. Styrofoam [Ques. 3] All particles can be classified into a. Leptons and quarks b. Hadrons and leptons c. Baryons and leptons d. Mesons and Baryons [Ques. 4] An observer measures the North Star (Polaris) at an altitude of 30. The observer's latitude is a. 40N. b. none of these. c. 60N. d. 30N. [Ques. 5] A circular hole is drilled into an aluminum sheet. When the sheet is heated, the diameter of the hole will a. become smaller. b. become larger. c. depend on the thickness of the sheet. d. not be affected. [Ques. 6] The minimum energy needed to produce a positron is a. 3 MeV b. 2 MeV c. 1 MeV d. 4 MeV e. 0.51 MeV [Ques. 7] On September 22 or 23, the noonday Sun is overhead at what latitude? a. 0 b. 23.5N c. 23.5S d. That of the Tropic of Cancer [Ques. 8] Heat transfer from hot or cold liquids in a thermos bottle is prevented by ______________. a. convection b. conduction c. radiation d. all of these [Ques. 9] A proton and an antiproton each with total energy of 400 GeV collide head-on. What is the total energy (particles + energy) released? a. zero b. 400 Gev c. 800 GeV d. 1 600 GeV e. 2 400 GeV [Ques. 10] On June 21, the noonday Sun is overhead at what latitude? a. 0 b. 23.5N c. 23.5S d. That of the Tropic of Cancer Title: An observer measures the North Star (Polaris) at an altitude of 70. The observer's latitude is Post by: Melisaerickson on Feb 23, 2018 Content hidden
Title: An observer measures the North Star (Polaris) at an altitude of 70. The observer's latitude is Post by: tameeka314 on Feb 23, 2018 This calls for a celebration :raised_hands:
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