Pls answer

a longitudinal wave is

a wave that the medium is displaced perpendicular to the direction of the wave, such as a sound wave in the air.

a wave that the medium is displaced parallel to the direction of the wave, such as waves on a string.

a wave that the medium is displaced perpendicular to the direction of the wave, such as waves on a string.

a wave that the medium is displaced parallel to the direction of the wave, such as a sound wave in the air

A Longitudinal Wave is _____.

D.a wave that the medium is displaced parallel to the direction of the wave, such as a sound wave in the air

Explanation:

Sound : It is the mechanical energy that causes sensation of hearing to the ear.

Sound is produce by the vibrating objects .

Vibration : To and fro motion of the object.

The vibrating motion of particle creates two region of air pressure:

Hence , Sound wave travels by forming compression and rarefaction.

This disturbance in particles of air  is called : Wave

The waves are classified into two parts :

1. Longitudinal wave : These are those waves in which particles of medium travel parallel to the propagation of the wave.They both travel in same direction.

Sound wave is longitudinal wave

2. transverse wave : These are those wave in which particle of medium travel perpendicular to the direction of wave . If particles travel along x-axis then wave along y or z- axis.

example : Light (or electromagnetic wave) is transverse wave

Look at the attached images :

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.