View attachment 266303​

45

 

45

34

 

34

45

If the first digit is x, the second digit is y and the result z, as in:

x + y = z

Then the equation;

x(y+1) = z

Is valid for the first three samples. Then, for the last line we have:

5(8+1) =(5)(9) = 45

 

45

If the first digit is x, the second digit is y and the result z, as in:

x + y = z

Then the equation;

x(y+1) = z

Is valid for the first three samples. Then, for the last line we have:

5(8+1) =(5)(9) = 45

​

 

View attachment 267721​

I have seen your answer. It is one correct answer. But my answer of 45 is just as valid.

The answer of 35 is only valid with the addition of arbitrary functions between lines. Plus it assumes the existence of specific initial conditions (otherwise where is the first line developed?)

The answer of 45 is only valid by recognizing that + may be an arbitrary function. Which it often is in this class of puzzles. For example view 1+4=5 as 1Φ4=5, where Φ is a function of x and y.

Thus my equation becomes a valid and correct answer.

 

I have seen your answer. It is one correct answer. But my answer of 45 is just as valid.

The answer of 35 is only valid with the addition of arbitrary functions between lines. Plus it assumes the existence of specific initial conditions (otherwise where is the first line developed?)

The answer of 45 is only valid by recognizing that + may be an arbitrary function. Which it often is in this class of puzzles. For example view 1+4=5 as 1Φ4=5, where Φ is a function of x and y.

Thus my equation becomes a valid and correct answer.

The answers to these types of questions are up to the author but sometimes have multiple logical (defendable) answers. I actually like the 45 answer better because it does not rely on the value of the previous equation (which makes the value of 1+4 questionable (because 0+3 should be placed above 1+4 which would screw up everything).

 

 

View attachment 267722

No sitting on the sidelines - we need winners and losers! Cast your vote.

 

No sitting on the sidelines - we need winners and losers! Cast your vote.

I vote for Zagnut.

 

Engineer Builds His Own X-Ray After Hospital Charges Him $69K


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The project sounds suspiciously like the start of a new superhero origin story, with Osman transforming into the 'Radiation Man' at the end of the video to avoid paying for X-rays for the rest of his life. And it doesn't help that he declares "My will to do science is significantly stronger than my will to live," at one point either.

 

Engineer Builds His Own X-Ray After Hospital Charges Him $69K
View attachment 267772​

Not very smart or safe if this is real. The x-rays are the least dangerous part of this death trap.

 

The x-rays are the least dangerous part of this death trap.

You mean the high voltage is the most dangerous part?

 

You mean the high voltage is the most dangerous part?

Exactly.

 

You mean the high voltage is the most dangerous part?

Google arc flash

 

 

New Method Could Make Charging EV's While Driving a Reality


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The team of researchers designed a system that utilizes pairs of insulated metal plates that are placed on the ground. These are connected to a power line through a matching network and a high-frequency inverter. ... As electric fields generated by readily accessible voltages are weak, Afridi and his team boosted the voltage for their system and operated it at very high frequencies to achieve higher power transfer.

 

New Method Could Make Charging EV's While Driving a Reality
View attachment 267783​

Don't wait for this to ever happen. If the system has a 50% end to end power transfer it will be a miracle and it has the magic word 'Tesla'.

 

Don't wait for this to ever happen. If the system has a 50% end to end power transfer it will be a miracle and it has the magic word 'Tesla'.

Yeah, I tend to look at it with skepticism too. But my main question is, is the risk worth the try?

 

Yeah, I tend to look at it with skepticism too. But my main question is, is the risk worth the try?

Not really IMO other than a lab demo. Powered roadways are neat ideas but they all suffer from several practical flaws. One of the prime ones is distributed utility scale power for miles on roads with trucks up to 80,000 pounds will never be cheaper than bulk energy delivery. The roadbed/electrical power engineering requirements per mile means that costs per Watt delivered would be ridiculous compared to bulk energy storage and supply.

Another is that if the roadbed on some dark lonely road has high value, people will steal it and the parts associated with it.

https://www.latimes.com/world/asia/la-fg-china-solar-theft-20180109-story.html

It was supposed to be China’s grand “photovoltaic highway” — a solar energy-collecting, 0.6-mile stretch of road that symbolized the country’s extraordinary clean energy ambitions.

But that was last month. Five days after the road opened in the industrial city of Jinan for testing on Dec. 28, inspectors found that one six-foot panel was missing — allegedly plundered by thieves, according to the Qilu Evening News, a local newspaper. The purported thieves had also damaged seven surrounding panels. The road has since been closed.

“We can speculate the damage was not done by hand, nor does it appear it was done by a big vehicle,” Xu Dehao, a construction worker at Shandong Pavenergy, the company overseeing the project, told the newspaper. “It was more likely done by a professional team.”

 

“Americans will do anything not to use the metric system”

https://www.accuweather.com/en/spac...rdous-asteroid-7335-near-earth-may-27/1190523
Asteroid the size of 350 giraffes to fly past Earth this week

The UK should know better.
https://www.dailymail.co.uk/science...size-giraffe-strikes-Earth-coast-Iceland.html
Asteroid half the size of a giraffe strikes Earth off the coast of Iceland – just two HOURS after it was discovered by astronomers