the armature of a 230 V shunt motor has a resistance of 0.18 ohms if the armature current is not to exit 76 a calculate (a) the resistance that must be inserted in series with the armature at the instant of starting​ (b) the value to Wich to the resistance can be reduced when the armature accelerate until Ec is 168 volt (c) the armature current at the instant of starting if no resistance is inserted in the armature circuit. (assume a 2 volt at the brushes)

answer: b.

explanation:

statement #3 on andre"s list is false.

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 =