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[Update] หน่วยฐาน SI สำหรับการวัดทางวิทยาศาสตร์ (SI unit) – | สัญลักษณ์ s – NATAVIGUIDES

IT HAPPENED! The Tesla Semi 2021 Is FINALLY Here!

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Elon Musk’s Tesla has proven it can make excellent batterypowered cars. With many
awards and lots of sales, the fact has been proven over and over. However, with the
Tesla Semi truck here, has Tesla made a great electric truck?
In this video, we find out because Tesla’s most powerful monster, the Semi Truck, is
here!
For decades, the logistics sector has relied on dieselpowered big rigs to transport large
cargo on land over long distances. They ferry both raw materials and finished goods all
over the country.
Gaspowered trucks do this while producing lots of harmful emissions that cause global
warming and health hazards. This is the ugly truth behind the items you pick off the
shelf because they got there with the help of these environmentpolluting vehicles.
Making a batterypowered truck is very difficult because of the unique requirements of
the task they do. However, that is not stopping Tesla from making one, and like any
product Tesla makes, the Semi Truck shatters expectations and turns the transport
sector on its head!
The Semi is a class 8 truck powered by four independent electric motors. The
independence of these motors allows Tesla to do some exciting things with the Semi.
One example is how Tesla has solved an agelong problem with trucks loaded with a
trailer; jackknifing!
Jackknifing is the nightmare of truck drivers because it is lifeanddeath! Jackknifing
happens when the truck cab violently goes one way while the trailer goes another,
resulting in a catastrophic imbalance causing the truck to flip over. At this point, the
driver has lost control and can only hope for the best!
But not in a Tesla Semi! Musk boasted it would never happen to a Teslabranded truck
during the presentation of the Semi.
Here is how the Semi prevents jackknifing with the help of its independent electric
motors:
Thanks to a unique drivetrain, the truck can detect the weight distribution on each of the
wheels in realtime. It can also actuate the motors or stop them as required to maximize
traction control, thereby automatically correcting for oversteer when the weight
distribution changes.
The result is that the truck does everything to avoid a jackknife, and the best part is it
does not require the driver’s intervention!
Bear in mind that this solution came very early in the truck’s development.
Apart from preventing accidents, the electric motors power the Semi to great heights.
This batterypowered monster does 0 to 60 miles per hour in 20 seconds with 80,000
pounds of load attached! Eighty thousand pounds is the maximum load legally permitted
for its class.
Disconnect the load, and the Semi does it in 5 seconds, competing with expensive cars!
Going up a 5% grade with maximum load attached, the insane Semi reaches 65 miles
per hour! To get how crazy that is, a dieselpowered truck will only reach 45 miles per
hour under the same conditions!
The Semi is revolutionary, so it is appropriate that Tesla chose a striking design. It puts
the driver at the center in the cabin instead of to the side. This cockpitstyle seat
placement, coupled with a good height, enhances safety because it allows the driver to
see more.
External cameras feed the two screens before the driver with the footage of the truck’s
surroundings.
The Semi is protected against rollover by its low center of gravity.
Now, guess what Musk’s favorite part of the Semi is? It is the windshield glass! He
claims it can withstand a thermonuclear explosion!
Speaking of range, the Semi comes in two different configurations; one will last 300
miles on a single charge while the second one will go 500 miles before having to stop
for a charge.
The Semi debuts with Tesla’s new 4680 battery. Tesla has spent a lot of time tweaking
the materials and physical arrangement to squeeze out the most range, reduce weight
and charging times, and enhance safety and longevity.
Some people have wondered if the battery would not be a problem for the Semi. EV
batteries are heavy, and the typical Tesla car with a 100 kWh battery weighs 1,300
pounds more due to the battery. Some experts not associated with Tesla estimates that
the Semi needs between 600 kWh and 1000 kWh to yield 300 or 500 miles of driving
range.
Using this estimate, these experts say the Semi’s battery will have to weigh about 8,000
pounds. Ordinarily, that would eat into the payload allowance for the Semi, which is
equivalent to a class 8 truck.
But that does not take into account the advances Tesla has made with its new battery.
Those estimates were made in 2017, and since then, Tesla has recorded breakthroughs
in its battery. Like it has been stated, these new 4680 batteries are lighter and have a
higher density, which bodes well for the Semi.
Apart from the battery advancement, the Semi will benefit from changes to trucking
regulations since 2017.

นอกจากการดูบทความนี้แล้ว คุณยังสามารถดูข้อมูลที่เป็นประโยชน์อื่นๆ อีกมากมายที่เราให้ไว้ที่นี่: ดูความรู้เพิ่มเติมที่นี่

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GTA San Andreas Definitive Edition Comparison – PS2 / Xbox / PC / Mobile / Remaster

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Grand Theft Auto San Andreas Remastered The Definitive Edition vs GTA San Andreas on PS2 vs Xbox Original vs PC vs 10th Anniversary version Mega Comparison in 4K Ultra HD by GTA Series Videos
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Here you can find all the latest news, video walkthroughs and official trailers of the most successful video games published by Rockstar Games, including Grand Theft Auto series, Red Dead Redemption, Max Payne, L.A. Noire, Bully and many others.
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Tour of Flanders 2016 – Sagan the Great

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Великолепная победа Питера Сагана на великой классике. Peter Sagan wins great classic. Final 10 km.

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Blackbeans – About love [Official Audio]

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Album : You (are) mean a lot to me .
Lyrics \u0026 Music \u0026 Arranged : Blackbeans
Recording : Blackbeans
Mixed \u0026 Mastered : Nut Suppakorn klaybanmai
Artwork By Blackbeans
Music streaming
Joox : Available now
Spotify : Available now
Apply Music : Available now
Follow US !
Facebook : https://web.facebook.com/blbesband/?r…
Instagram : https://www.instagram.com/blackbeanssss/
Personal Account :
Boom : IG : _ihearboom_
Timer : IG :Timer_naruebet
Peach : IG :Peachntw
Game : IG :Gamewnss
Booking (ติดต่องานจ้าง) : 0972961763 คุณโรส

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Why Warren Buffett is Holding Cash and NOT Investing in S\u0026P 500 Index Fund

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Warren Buffett and Charlie Munger explain why they are holding so much cash instead of being fully invested by putting the reserves into the main stock market index S\u0026P 500. “Why has Buffett stopped buying stocks?” is the question many investors ask themselves these days when thinking about the stock market situation with its current valuations. Let’s see the view of the greatest investors of all time on this subject!

The question goes: “Warren, you are a big advocate of index investing, and of not trying to time the market. But by your having Berkshire hold such a large amount of cash in Tbills, it seems to me you don’t practice what you preach. I’m thinking that a good alternative would be for you to invest most of Berkshire’s excess cash in a welldiversified index fund until you find an attractive acquisition or buy back stocks. Had you done that over the past 15 years, all the time keeping the $20 billion cash cushion you want, I estimate that at the end of 2018, the company’s 112 billion balance in cash, cash equivalents, in shortterm investments and Tbills, would’ve instead been worth about 155 billion. The difference between the two figures is an opportunity cost equal to more than 12 percent of Berkshire’s current book value. What is your response to what I say?”
From Berkshire Hathaway Annual Shareholders Meeting. (2019)

Warren E. Buffett is an American longterm investor, philanthropist, business tycoon, and the chairman and CEO of Berkshire Hathaway. He is considered one of the most successful investors in the world and has a net worth over 100 billion dollars. Buffett was born in Omaha, Nebraska. He developed an interest in business and investing in his youth and made truly incredible stock market returns over his career.

Music by Chris Zabriskie.

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Why Warren Buffett is Holding Cash and NOT Investing in S\u0026P 500 Index Fund

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นอกจากการดูบทความนี้แล้ว คุณยังสามารถดูข้อมูลที่เป็นประโยชน์อื่นๆ อีกมากมายที่เราให้ไว้ที่นี่: ดูบทความเพิ่มเติมในหมวดหมู่LEARN FOREIGN LANGUAGE

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