Awave travels through a medium and displaces the particles perpendicular to the direction in which the wave is traveling. this type of wave is a select one: a. transverse wave because of the direction that the particles are being displaced as the wave travels. b. longitudinal wave because of the way the particles are displaced as the wave passes through. c. longitudinal wave because it moves forward through a medium causing the particles to vibrate. d. transverse wave because it is not traveling in a vacuum and the particles are moving.

The correct answer is C. longitudinal wave because it moves forward through a medium causing the particles to vibrate.

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

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =