A car towing a trailer is accelerating on a level road. The car exerts a force on the trailer whose magnitude is * 3 points the same as that of the force the trailer exerts on the car. the same as that of the force the trailer exerts on the road. the same as that of the force the road exerts on the trailer. greater than that of the force the trailer exerts on the car.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

your answer is c! 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 =