swansont

You’re free to start up a company with this business model. A lot of people make long-distance calls, and a lot of people have cell phones who don’t get charged for long-distance, so good luck with that. Long-distance surcharges made sense when the infrastructure was more cumbersome (copper connections, operators), but that’s not so much the case anymore.

The article I linked to said the planned release is 22 TBq per year. 1 mole has an activity of about 1.1 10^15 Bq, so 1.8 g is ~660 TBq. Of course, the tritium will decay over that time.

Anything with a high heat capacity will retain a higher temperature for a while. It will also take longer to warm up. Basalt is 0.84 kJ/kg-K (0.84 kilojoules required to raise 1 kg by 1 K, or 1 degree C) https://www.engineeringtoolbox.com/specific-heat-solids-d_154.html Wax and beeswax are significantly higher How warm something feels to the touch depends on how well it conducts heat. Room-temperature metal feels cool because it conducts heat well.

The raw amount is meaningless without knowing the concentration, and the resulting activity per liter. 1.8 g of tritium in a liter of water is quite different than the same amount in 10,000 liters https://www.reuters.com/world/asia-pacific/japan-release-fukushima-water-into-ocean-starting-aug-24-2023-08-22/ “The water will initially be released in smaller portions and with extra checks, with the first discharge totalling 7,800 cubic metres over about 17 days… That water will contain about 190 becquerels of tritium per litre, below the World Health Organisation drinking water limit of 10,000 becquerels per litre, according to Tepco”

One method of tritium production is from neutron activation of lithium-6, yielding an alpha and tritium. Heavy-water reactors like CANDU will separate/recover tritium, but that’s going to have a higher concentration of tritiated water than a light-water reactor.

That would depend on the needs and desires of the people with the device. There’s nothing inherent in a QC that makes them resistant to an unauthorized person using it.

Yes, such batteries exist https://en.m.wikipedia.org/wiki/Betavoltaic_device Separating tritiated water is difficult and might not be cost-effective at low concentrations. If you do mass separation you’ll also get water with O-18, which has the same mass. So there’s probably a threshold below which it’s not worth the effort.

1. Yes. If the upper limit is a constant this is trivial, since it will be a rectangle. 2. You should stop using a language model that makes stuff up to get factual information

It’s used to light up “exit” signs where electricity isn’t readily available. https://www.nrc.gov/reading-rm/doc-collections/fact-sheets/fs-tritium.html Long-term storage is problematic since it decays away (12.3 year half-life)

Right. It works best on polar molecules, like water.

The cap only applies to G7 countries. If some other nation transports the oil, there is no effect. It seems likely that non-G7 ships have taken up the transport of oil. Edit: https://www.hellenicshippingnews.com/sanctions-on-russian-crude-and-diesel-exports-are-failing/ “Mainstream European tanker owners have largely abandoned the Russian trade now that the country’s crude and diesel have breached Western price caps. The so-called “shadow” fleet — tankers operating outside Western insurance and financial circles — has taken over”

The energy is absorbed by anything in the oven, with varying efficiencies (oil would likely have a low efficiency). It can get things hotter than 100 C, just not liquid water. Ceramics and glass don’t have water in them either, but they heat up. You can melt plastic.

Both. As the saying goes, relativity, causality, FTL: pick two. You can have causality and FTL if you discard relativity, but relativity is consistent with experiment.

Because it’s unphysical

But that just begs the question - how does the observer move that fast?

Not me. Keeping the heat up a bit sets up a nice convection cell and mixes the pasta, as Ken notes. Helps make sure it doesn’t stick to the bottom of the pot, or stick together

They are not involved in dealing out the neg rep in question.

The title does say spatial dimensions…

! Moderator Note The international language of science is English

Fair enough

What is the marker? A line is not a physical object.

The trash bin is for topics that are also rules violation of some sort. Not for failed proposals.

You’d have to have something in the space to be able to observe behavior in order to tell.

PE is not only for gravity. Any conservative force will work, i.e. there is no dissipative force, such as friction. Electrostatic forces and springs are two prominent examples

The conversion of PE to KE (or vice-versa) depends on the internal force that’s present. An object under constant acceleration will convert at a different rate than acceleration from an inverse-square relation. You should be able to solve for KE or PE as a function of time, for whatever circumstance you have