Use the mouse to move the wood block in and out of the water and watch what happens to the liquid level (boxed in yellow in the picture) and how the buoyant force changes (pink arrow that appears on the box when it is in the water).
When moving the wood block deeper into the water the water level increased. What happened to the buoyant force?
It increased.
It decreased.
It did not change.

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?

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 =