Abrass (nonmagnetic) block a and a steel magnet b are in equilibrium in a brass tube under the magnetic repelling force of another steel magnet c located at a distance x 5 0.004 m from b. the force is inversely proportional to the square of the distance between b and c. if block a is suddenly removed, the acceleration of block b is a 5 29.81 1 k/x2, where a and x are expressed in m/s2 and meters, respectively, and k 5 4 3 1024 m 3/s2. determine the maximum velocity and acceleration of b.

i believe the answer is a hope it and is correct

there are no components of a physical goal mentioned on the list of choices that you've provided.

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 =