R = 8.314 J/K/mole T = 25 + 273 = 298 K M = molecular mas of N2 in kg = 28 X 10^-3 kg
put values...
</span><span> root mean square</span> = square root of ( 3 X 8.314 X 298/28 X 10^-3) = square root of ( 265454.143) = 515.2 m/s so option A is right hope this helps
Gravitational potential energy is caused when an object is resting above the ground. It is released when the object is falling, not by burning substances.