A block is suspended by a string from Scale A and is submerged in an unknown liquid in a beaker. The beaker has a mass of 1.00 kg and is resting on Scale B. The liquid has a mass of 1.80 kg. Scale A reads 3.50 kg and Scale B reads 7.50 kg. The sides of the cube are 16.0 cm long. Required:
a. What is the density of the liquid?
b. What will the balance D read if block A is pulled up out of the liquid?
c. What will the balance E read if block A is pulled up out of the liquid?

6/12=1/2

step-by-step explanation:

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.