Please i need help A 12 kg ball (ball #1) moves rightward at 4.000 m/s. It strikes a ball (ball #2) that is at rest and slows down to 1.647 m/s. Find the mass of ball #2.

this is the formula m1v1 + m2v2 = m1v1 + m2v2

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

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 =

answeralert drivers who drift off the road;