Four forces act on a point 150 gm SE, 300 gm due S 60" W.280 gm due W and 180 gm 60" S of E. (a) What single force wil replace the four forces? (b) What single force
(called the equilibrant) would balance the four forces? Solve algebraically,

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..

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 =

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.