midterm1 example

midterm1 example - Midterm #1 Astronomy 0846 Name: TU id #:...

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Midterm #1 Astronomy 0846 Name: TU id #: Formulas: c = λ f T 6 10 3 × = λ 4 T F σ = ( ) 2 2 1 3 P M M D × + = 2 2 1 R M M G Force = Constants: Speed of light in vacuum c = 3x10 8 m/s Gravitational constant G = 6.67x10 -11 m 3 kg -1 s -2 1. The Sun’s apparent path around the celestial sphere is called a) the horizon b) the circumpolar zone c) the celestial equator d) the ecliptic 2. What is the frequency of a green laser beam with wavelength of 600nm? (1nm = 10 -9 m) 3. How many times brighter or fainter would a star appear if it were moved to: a) twice its present distance b) half its present distance c) ten times its present distance 4. In which region of the Earth’s atmosphere have you spend most of your life? a) the ionosphere 1
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b) the stratosphere c) the troposphere d) the ozone layer e) the mesosphere 5. Write down Newton’s laws of motion. 6. Explain the method of determining the age of rocks based on the natural radioactivity of some atoms. 7.
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This note was uploaded on 03/24/2011 for the course PHYSICS 0845 taught by Professor Ahmed during the Fall '10 term at Temple.

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midterm1 example - Midterm #1 Astronomy 0846 Name: TU id #:...

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