A 50 kg surfer is riding a 25 kg surfboard at a speed of 6.00 m/s and then jumps off the front, moving forward. The surfers velocity when jumping off the surfboard is 2.50 m/s. Find the surfboards velocity immediately after the surfer jumps off.

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

truck y has a greater velocity than truck x.

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 =