Write a hypothesis for Part II of the lab, which is about the relationship described by F = ma. In the lab, you will use
a toy car and apply forces to it. Use the format of "if...
then ... because ..."and be sure to answer the lesson
question "How can Newton's laws be experimentally
verified?" specific to Newton's second law.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

answer: 31, 5556. 952 seconds

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 =