Elon Tweet regarding LTE

yip yip yipee, now all we need is the browser...

brewster said:

[UPDATE: Tweet Removed]

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He needs to seriously filter his tweets by PR first.


Though this tweet is really cool once you figure it out (a bit unobvious at first):

Another good riddle: drill a hole thru a sphere such that the height of what remains of the sphere is 10cm. What is its remaining volume?

So what was the tweet re LTE? I'm confused.

I believe Elon's tweet implied that cars are currently being build with LTE as standard and that later this year Tesla will offer an LTE upgrade for older cars. I am sure there will be a charge for that.

I quite like it that he tweets impulsively at times.

The full tweet (now-deleted) is captured here:

It looks like I have LTE enabled - Page 8

deonb said:

He needs to seriously filter his tweets by PR first.


Though this tweet is really cool once you figure it out (a bit unobvious at first):

Another good riddle: drill a hole thru a sphere such that the height of what remains of the sphere is 10cm. What is its remaining volume?

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GREAT quiz on first examination; on second - drilling​ down to First Principles - it's super-easy.

The volume of a 10cm sphere with a 0cm diameter hole. A sphere with a hole in it is no longer a sphere!!
"I go 1 km South, one km West and one km North. I end up at my starting point. Where am I?"

Dborn said:

The volume of a 10cm sphere with a 0cm diameter hole. A sphere with a hole in it is no longer a sphere!!
"I go 1 km South, one km West and one km North. I end up at my starting point. Where am I?"

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Not quite. Look up the napkin ring problem.

Dborn said:

"I go 1 km South, one km West and one km North. I end up at my starting point. Where am I?"

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The North Pole...unless that was a rhetorical question...

TI Sailor said:

The North Pole...unless that was a rhetorical question...

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also near the South Pole.

Yeah. North Pole is correct. Another of Elons tweets.
The sphere is still a problem for me though.

Without looking up your napkin ring, I claim Dborn has it, other than his "no longer" caveat. Now, I'm basing my claim upon faith that your own puzzle is not being devious in that I am taking it upon your word that, regardless of the size of the initial sphere, once the appropriate hole has been drilled, all such quondam spheres satisfy the identical remaining volume.

That being the case, then go to the limits. That is, start with a sphere that is just larger than 10cm in diameter, and drill a hole that is just larger than exactly 0cm. We've almost satisfied the size criterion. Go one step further: start with a sphere of exactly 10cm and a hole of exactly 0cm...and we're there. And that sphere's volume is, of course, 4/3 pi r^3 or, (pi*500)/3 or approx. 523.6 cm^3.

So, unless you've slipped us all a mickey, all other such "napkin ring" quondam spheres will have that same volume.

QED

Now, I made up a new quiz last night but I've forgot it already so we can go back to discussing Elon's Cheshire Cat of a tweet. Yes, I like that: Elon's Cheshire Cat tweets. Just like the one his avatar is holding....

Dborn said:

Yeah. North Pole is correct. Another of Elons tweets.
The sphere is still a problem for me though.

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Actually as raynewman pointed out, it also works for near the S pole. You're at a point near the S pole, go 1 km south to a location where the circle around the S Pole is exactly 1 km, turn to the W, walk around the S pole, then go north 1 km and you're back at your original position.

Or, at a point nearer to the S pole, go 1 km south to a location where the circle around the S Pole is exactly 1/n km [for any counting number n], turn to the W, walk 1 km, then go north 1 km and you're back at your original position. This puzzle has an infinite number of solutions.

I would like to hear more about LTE though!

I googled LTE and it brought up a lot of pages regarding the 4G network. Useless for markets where the browser is disabled on the Tesla

lonewolf313 said:

I googled LTE and it brought up a lot of pages regarding the 4G network. Useless for markets where the browser is disabled on the Tesla

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I disagree! Loading Google Maps goes a lot faster.