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Because you are expendable and the findings in your work should be passable to your successors when you not be there so it does not need to be done again. What some employers omit is stating the importance priorities of your work. Should be 1- 'document that' first, and 2- 'do that'. Charles Darwin work would not survive today without his reports. 'Wikipedia' would not be very useful if there were blank pages that you need to fill properly yourself every time you want to learn something.

The same pressure as on the other side of the window.

Noticed andean and amazonian people have much less grey hair. Their consumption of caffeine is not common. Probably other tribes in the planet show the same. If not another variable; -genetics-. Tried looking at pictures of their elders hair, and found most use hats. Which brings another variable to the table... If hats retard the appearance of grey hair. Combining variables does not provide very solid evaluation of causes. Check for dietary characteristics of people groups who do not exhibit grey hair to relate influences. Check if your ancestors had grey hair.

If I understand you well; I would call the XYZ company and ask for the fraud department. That will get their attention. Then ask if the serial number is genuine, and distinctive markings. To fully utilize features, well, you try them one by one compared with a published genuine specifications sheet from the genuine brand.

Thanks for your valid observation; yes, that is my logic. 'Negating the need'. I was pulled out of my birth country at age 5 and much later dragged by wife to U.S. With no schooling in my own european country nor participation/knowledge of its internal workings, am not in a position to push for changes there. Which are not really needed, things are very satisfactory and civilized. My original country is also being invaded by immigrants, and feel the U.S. president is taking a right preventive action. Emigration happens because the governments of emigrants countries are rotten. Bark at them.

The protest should not be directed to the president. They are barking at the wrong hydrant. The citizens of the affected banned countries should complain to the terrorists of their respective countries as they CAUSED the preventive action. If no action was taken and a terrorist attack mishappens, the president would be accused of not taking prevention actions. So, have the protesters going to their countries and spank their co-national terrorists which caused most of them to inmigrate in the first place, fix or eliminate their problems and would be free to be welcome anywhere. And do not ask the U.S. to do it for them. Constitution plays no role as this is not religious. Meanwhile, as ALL peaceful citizens have been force-funneled to airport restrictions and security measures unable to carry that and the other, searches and more hassle by the fault of bad apples, Inmigrants will have to taste their own medicine by being funneled into restrictions. Same with the wall. Mexicans should complain and protest to their current and past presidents for not implementing a quality of life that they want, producing the emigration. Do not bark at U.S. government. That same U.S. government that made the U.S. a sought-after temptation to migrate in. The quality of a country is measured by sustracting the number of emigrants from the number of inmigrants. And yes, am a very legal inmigrant.

Pictures of actual venturi tees in the market, or how to make them: ----> https://duckduckgo.com/?q=ventury+t+plumbing&t=canonical&iax=1&ia=images

Rephrasing... Is there any predator animal that visually follows prey footprints on snow ?

English... interesting language... "Natural gas producing algae ?" Shouldn't it better be "Algae producing natural gas ?" Is the intended meaning left to imagination or guess ?

Hi. Animals use vision, smell, hearing when looking for their meals. Never seen reference of a predator tracking prints in the snow, which seems a smarter/simpler/easier way to follow 'a meal passed here' Can smell the scent left in the snow, but seems that visually, print paths are not a clue to follow. Do you know anything about ?

Those guys have a brutal diet... How is their longevity ? Anyone knows ?

Would like to see a very intelligent self-driving automobile with snow masking the lanes paint...

Thank you, Acme. Now I found a bunch, with parallel jaws too.

Hi. Trying to find a vendor in USA and can only find a picture. Perhaps I need the correct terminology. Edited - added : It is used to expand hose ends and other whatevers.

Thanks. So at least two causes. Bacteria and ultraviolet. Rubber turned to gooey I have seen only indoors. Cracked rubber only outdoors. Hmmm.

Thanks. So UV is not destructive to bacteria ?

Thank you StringJunky. Edited : added ----> If bacteria are guilty; is it safe to say that rubber exposure to ultraviolet light would prevent vulcanized rubber degradation ? (It does not happen to tires as far as I know; but indoors kept rubber is prone to) The latex bands of my scuba spearguns are suggested to be kept away from sunlight. Could that be a goofy empirism ? Unless there is more reasons for rubber degradation...

No, and thank you. I did, 44 years ago.

Read that when rubber turns to a gooey, is because ozone acted on it... or was improperly vulcanized, or... solvents/chemicals nearby are guilty... Can a piece of that 'degraded' rubber 'infect ' healthy rubber kept nearby and deteriorate it ?

I thank you Bender very much for replying,

What to expect ? Without a driver being of mandatory presence in the vehicle, and if so, cheat placing a concrete block on the seat and send it its way ? Punch a button to bypass a valet assisted parking ? Send the car by itself to pick up kids from school ? Exit the car at the office building and send it to find a parking place ? Call the car on a smart phone to pick you up at the workplace main door ? Arrive to work place and send the car back home for the wife to go somewhere ? Send the car to the hardware store with a purchase list and get the goodies by your garage door ? Send the car to the mechanic for oil change/whatever and back when done ? Go ahead, continue...

Thanks, Janus. Then, there is where am stuck. To express the event into an integral equation. Potential energy of the compressed spring Ep = 1/2 x F x d = 356N x 0.5m / 2 = 89 J. Which with 'no losses', transfers to the rod as kinetic energy Ek: Ep = Ek Ek = 89 J = 1/2 x m x v^2 v^2 = 89 J x 2 / 1Kg v = 13.34 m/s Got it or goofed ?

Please check my rationale... Initial velocity Vi is 0, spring compressed. Impulse force F applied is 356 Newtons at start of travel. Time the force is applied is 0.1 seconds during spring expansion = Δt Final velocity Vf at release is unknown = Vf = Vfinal - Vinitial = Δv Acceleration is a = Δv/Δt = F/m Δv = Δt F /m = 0.1s x 356N / 1Kg = 35.6 m/s <---- take-off velocity. a = 35.6m/s / 0.1s = 356m/s^2 The kinetic energy Ek = mv^2 / 2 1 x 35.6 x 35.6 /2 = 633.68 Joules. But, do I instead need to integrate the force applied during 0.1 second while linearly decreases to zero ?

Lightning heats air. Heated air expands. Expansion of air produces a sonic wavefront.