Atoy train has an acceleration of 1.2 m/s2. a net force of 3.0 n is acting on the train. what is the mass of the train?

a) 2.5 kg
b) 0.4 kg
c) 4.0 kg
d) 3.6 kg

current and voltage can both be different in different parts of a circuit so it matters where you place the ammeter and voltmete

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

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 =