Answer:
Sound waves. Anything that vibrates is producing sound; soundis simply a longitudinal wave passing through a medium via the vibration of particles in themedium. Consider a sound wavetraveling in air
The formula for the density of a substance expressed in mass and volume is rho = mass/volume or p = m/v. Rearranging the formula to isolate volume gives the formula v = m/p. To solve for the problem given, this formula must be used. This gives a solution of:
v = m/p = 250 g/ 968 g/cm^3 = 0.258 cm^3 of sodium
Temperature increase, smaller container, or influx of more gas
Answer:
4306.8625 J or 344549/80J (fraction form)
Explanation:
kinetic energy= 
mv²
= 
×72.5×10.9²
= 4306.8625 J or 344549/80 J
