What must be the pressure amplitude in a sound wave in the air (0∘c) if the air molecules undergo a maximum displacement equal to the diameter of an oxygen molecule, about 3.0⋅10−10m?

Pressure amplitude,

Explanation:

It is given that,

The maximum displacement equal to the diameter of an oxygen molecule,

Speed of sound at 0 degrees is, v = 331.5 m/s

The pressure amplitude for the longitudinal wave is given by :

Where

is the density of air,

f is the frequency say 59 Hz

So, pressure amplitude is given by :

So, the pressure amplitude in a sound wave in the air must be . Hence, this is the required solution.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary