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•m2/kg2 Acceleration due to gravity g 9.81 m/s2 Speed of light in a vacuum c 3.00 × 108 m/s Speed of sound in air at STP 3.31 × 102 m/s Mass of Earth 5.98 × 1024 kg Mass of the Moon 7.35 × 1022 kg Mean radius of Earth 6.37 × 106 m Mean radius of the Moon
