O ln a hydraulic press , a force Of 400 N is exerted on a piston of area 0.001m2? The load -bearing piston has
an area of 0.2m² . Determine the presure exerted by the
hydraulic fluid

Explanation:

Pressure = force / area

P = 400 N / 0.001 m²

P = 400,000 Pa

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

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 =