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physics06tbl - P THE UNIVERSITY OF THE STATE OF NEW YORK...

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THE UNIVERSITY OF THE STATE OF NEW YORK • THE STATE EDUCATION DEPARTMENT • ALBANY, NY 12234 Reference Tables for Physical Setting/PHYSICS 2006 Edition List of Physical Constants Name Symbol Value Universal gravitational constant G 6.67 × 10 –11 N m 2 /kg 2 Acceleration due to gravity g 9.81 m/s 2 Speed of light in a vacuum c 3.00 × 10 8 m/s Speed of sound in air at STP 3.31 × 10 2 m/s Mass of Earth 5.98 × 10 24 kg Mass of the Moon 7.35 × 10 22 kg Mean radius of Earth 6.37 × 10 6 m Mean radius of the Moon 1.74 × 10 6 m Mean distance—Earth to the Moon 3.84 × 10 8 m Mean distance—Earth to the Sun 1.50 × 10 11 m Electrostatic constant k 8.99 × 10 9 N m 2 /C 2 1 elementary charge e 1.60 × 10 –19 C 1 coulomb (C) 6.25 × 10 18 elementary charges 1 electronvolt (eV) 1.60 × 10 –19 J Planck’s constant h 6.63 × 10 –34 J s 1 universal mass unit (u) 9.31 × 10 2 MeV Rest mass of the electron m e 9.11 × 10 –31 kg Rest mass of the proton m p 1.67 × 10 –27 kg Rest mass of the neutron m n 1.67 × 10 –27 kg Prefixes for Powers of 10 Prefix Symbol Notation tera T 10 12 giga G 10 9 mega M 10 6 kilo k 10 3 deci d 10 –1 centi c 10 –2 milli m 10 –3 micro µ 10 –6 nano n 10 –9 pico p 10 –12 Approximate Coefficients of Friction Kinetic Static Rubber on concrete (dry) 0.68 0.90 Rubber on concrete (wet) 0.58 Rubber on asphalt (dry) 0.67 0.85 Rubber on asphalt (wet) 0.53 Rubber on ice 0.15 Waxed ski on snow 0.05 0.14 Wood on wood 0.30 0.42 Steel on steel 0.57 0.74 Copper on steel 0.36 0.53 Teflon on Teflon 0.04 P
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