Ahousefly walking across a clean surface can accumulate a significant positive or negative charge. in one experiment, the largest positive charge observed was +70 pc. a typical housefly has a mass of 12mg. a.) explain how the housefly could accumulate an electric charge by walking across a surface? b.) what magnitude and direction electric field would be necessary to levitate a housefly with a maximum charge? could such a field exist in air?

1681714.28571 N/C

Yes it could exist

Explanation:

m = Mass of housefly = 12 m

q = Charge = 70 pC

g = Acceleration due to gravity = 9.81 m/s²

E = Electric field

When an object accumulates charge it means that it is gaining electrons making it negatively charged. This is the concept of static electricity.

Here, the electric force and the graviational force will balance each other

1681714.28571 N/C of electric field would be required to levitate

The direction of the electric field would be upwards vertically.

In air the critical value of electric field is which is more than the critical value of electric field in air. So, the electric field can exist.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

ya te mando la respuesta