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Note the word "discharge" in the 2nd bullet point. Water is flowing, at 0.5 m^3/s. Energy is lost as the water flows through pipes, and through that constriction, but nothing in that picture is going to keep the water in the top tank. * Edit: * That is, unless the height elevations of the water does become equal. In the diagram, it's not certain that the bottom of A will always be above the top of B. And, they are asking for the elevation of B, at the time when the flow is as noted. They are not implying the heights are static.

That's absolutely possible, as long as tank 2 doesn't leak, and the tank and pipes can handle the pressure. Essentially, you can think of it as one single tank, that happens to have a complicated shape.

Is the bottom of tank 1 above the top of tank 2? Is the outlet in tank 1 above the bottom of tank 1?

*you're

But what's VNormal? That implies there's some absolute velocity that other velocities can be compared to. There is no such thing.

Maybe a better example: a few years back I bought a laptop for $1999. It had a Core 2 Duo CPU, 4 GB RAM, pretty good GPU for the time - and a 320 GB HDD (that was a very common size for a while). I've just looked at what the same money (unadjusted for inflation) would buy me from the same retailer: a laptop with a 5th generation i7, 16 GB RAM, a much better GPU - and a 256 GB SSD. So that'd be a vastly faster machine, lots of that due to the SSD, and given I never filled the 320 GB in that older laptop I doubt I'd notice the drop in capacity.

Unless copying movies to local storage, storage measured by TB is way more than most people will need. Sure, if doing video editing, or insisting on storing one's life work in photos, then go for the higher capacity slower drive. Even then, though, I'd go for an external USB (3.0) connected drive, and have an SSD in the laptop so normal work is fast. Best of both worlds. I gladly give up the storage space for speed. (Edit: I recall not all that many years ago I paid $300 NZD for a 30GB HDD. Today I can buy a 512GB SSD (or 4TB/8GB Hybrid SSHD) for the same money. It's all relative.)

Yep. I have the two monitors on my desktop stacked vertically. (I prefer to look up and down on multiple monitors, over left and right). Playing games at night, I often start Notepad (I use Windows) on the top (secondary) monitor, full screen with an empty document and white background, just to cast light down onto my non-gaming, non-backlit keyboard. On one of the comments above; I'd not buy a laptop today without an SSD. The cost difference is getting pretty low, and the advantages in speed and power consumption are real. In some configurations, an SSD equipped laptop with lower spec CPU can give more noticeable benefits than an old-tech spinning discs of rust HDD equipped laptop with better spec CPU. The CPU in a modern PC or laptop can spend a lot of time idling, accessing stored data is where a lot of the user-waiting time can go. (Of course, the drive in a laptop is future upgradable but the CPU not so much. So that's another consideration).

What country (currency)?

Sigh.

That doesn't answer the question. Without a mechanism for what causes redshift in your Universe, then you're having to make yet another unfounded assumption in making the ~ if 12-->13, then 1100-->1300 ~ claim.

Please explain what causes redshift in Universe Alfa.

Does that "free speech" not apply to the people commenting on your crap? If anyone seems most insulted or offended - it's you. (Besides, this is a privately owned forum. Free speech doesn't actually apply. That's why all posters need to follow the rules. "Free speech", means you can go make your own forum, and say what you want, there.)

Of course not. I was defining yours.

Of course not. I was defining yours.

Science does not mean simply making up bullshit and then hoping something comes of it. You may as well try to recreate the Mona Lisa by having monkeys throw their shit at a wall. (This comment was accidentally posted to a different elizsia thread, when it was originally meant to be here. Funnily enough, the comment applies to all elizsia threads anyway.)

Science does not mean simply making up bullshit and then hoping something comes of it. You may as well try to recreate the Mona Lisa by having monkeys throw their shit at a wall.

A more reasonable person might spend some time reading - before posting, to understand the style (culture) and content of a web forum. This is to understand what's allowed/expected, and where to post a topic (if at all). That reading would include the rules.

You can try this in a real car (please be careful). Of course you won't be able to do this in a vacuum, but what you'll see is that the thing you drop (say, a rock) will land ahead of the location where you let go of it. It might be hard to check - maybe have a friend (outside the car) video the experiment. The air will slow down the rocks forward movement (i.e. it will go backwards, relative to the car), but just as noted in posts above, that thing you drop will start with that forward (relative to the ground) movement. It's certainly not going to land behind the location where it's been let go. Come to think of it, you could do this inside a van. As the air inside moves with the van, there would be no horizontal effect on the dropped thing. i.e. carefully mark (A) the centre of the roof of the van, and (B) the centre of the floor - directly below. Drive along at 100 km/h and let go of a rock from the roof (A). Where do you expect the rock to hit the floor? At (B)? Behind (B)? Or ahead of (B)?

Bear in mind the BB isn't something that happened in one place in a pre-existing space, with everything then moving away from that one place. The BB happened everywhere. At the end of your nose, and off the shoulder of Orion. So while everything was once "closer", we're not going to see everything "nearing" one particular point distant from us. (Edit: just to note, was typing this before the above reply, not meaning to disagree with (or even add to) Stranges' good reply.)

You have half a point there, but in the motion of Galaxies there's going to be a fair bit of predictability. What's more likely: all the Galaxies we see, since they emitted that light, were eaten by space Unicorns? Or, they continued "moving" in ways governed by things like Gravity and expansion that we've learned about? We've seen the expansion and seen it accelerating, you can say "sure, but what's happening now" - but what's your alternative? Are you going to say everything has actually (just for example ...) stopped? Well - why? How? If you don't have an alternative, and just want to say "well, we don't know", that's fine. But also very pointless.

All good. I just mentioned that to part-explain why I was doing something slightly silly (to learn something). It's very hard to do something truly new. Just a few weeks ago a friend (way cleverer than me, and more experienced in this stuff too) mentioned he wanted to do a project using speakers to direct lasers, to do a light show. The idea was that the electromagnets in the speakers could be used not to make sound, but to allow precise positioning by feeding a varying voltage in. So that night I did a quick search, and yep, been done.

I'm part way into something now; in response to a co-worker (A) having trouble getting the attention of another co-worker (B) when she's got her headphones in. With an Arduino Nano, an ENC28j60 based Ethernet adaptor and a small servo; the plan is to bolt something to the back of B's monitor (on the Vesa mounts) that allows A to go to a web site and click a link. That link'll just refer back to itself, with a GET parameter that tells the Arduino to drive the servo to raise a little red flag from behind her screen. If I can do it all secretly, I'm hoping for a good fall-off-her-chair moment. ... haven't done Ethernet on an Arduino before - so that's what I'm having to google and youtube the last few nights. (And is kind of the underlying point of the exercise.)

I lost track. In that other thread - closed by a moderator - did you ever mention your Father? Further - you've had the "something from nothing" thread before, too. This one not closed: http://www.scienceforums.net/topic/88212-can-matter-and-energy-come-from-nothing-why-is-there-something-rather-than-nothing/

Never eat cheese before going to bed.