A dog walks 8.0 meters due north and then 6.0 meters due east. Determine the magnitude of the dog's total displacement to the nearest tenths place.

Explanation:

The displacement of the dog is the distance moved in a specified direction. It will be gotten using pythagoras theorem as shown;

d² = 8²+6²

d² =64+36

d² = 100

square root both sides

√d² = √100

d = 10m

Hence the displacement of the dog to the nearest tenth is 10.0m

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 =