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Exam 1 cheat sheet

Exam 1 cheat sheet. T ypical temperatures: Surface of sun 30,000K Nitrogen liquefies 77K Room 300K Helium liquefies 4K Outer space 3K Lasercooled atoms ~ nK to ~µK . T ypical scales: Hair thickness 100µm 1 m length of arm College campus 1000 m

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Exam 1 cheat sheet

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  1. Exam 1 cheat sheet Typical temperatures: Surface of sun 30,000K Nitrogen liquefies 77K Room 300K Helium liquefies 4K Outer space 3K Lasercooled atoms ~nK to ~µK Typical scales: Hair thickness 100µm 1 m length of arm College campus 1000 m Nickel 5 grams Your textbook 1kg Small car 1000kg Heartbeat 1sec Your age 6 x 108 sec Earth’s age 1017 sec Kinematic equations of 1D motion with constant acceleration For 2D motion with constant acceleration, obtain another set of equations by replacing x with y For projectiles, ax = 0 and ay= g (or 9.8 m/s2) Trig reminder: sin q = (side opposite to q) / hypotenuse cosq = (side adjacent to q) / hypotenuse

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