Awave oscillates 50 times per second. what is its frequency?
a.25hertz
b.50hertz
c.5.0*10^2
d.2.0*10^-2

The correct answer between all the choices given is the second choice or letter B, which is 50hertz. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.

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 =