Ashort-wave radio antenna is supported by two guy wires, 155 ft and 175 ft long. each wire is attached to the top of the antenna and anchored to the ground, at two anchor points on opposite sides of the antenna. the shorter wire makes an angle of 63º with the ground. how far apart are the anchor points?

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on 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 =

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.