swansont

But what if D were ~35,000 km? You send a signal to a geostationary satellite and back to the source. The error is now almost a microsecond. When the satellite is in the opposite direction, it’s that much, but in the opposite direction. Wouldn’t we notice this happening? The source clock, good to much better than a nanosecond, being almost a microsecond off by more or less than expected?

Have checked the curriculum at this type of school? They might list their textbooks and/or provide a syllabus for each course.

You don’t need to understand the math to use the result, so “people” don’t need to understand the math, but in order to create the model, you need to understand the math. You have to quantify the effects and have a formula that describes the various interactions and processes. Or you can go with a boolean system, with a series of yes/no questions to be answered, which could be laid out in a flowchart. But you need to have a comprehensive list of questions and cover all of the possible situations. It might be helpful to learn a little bit of game theory

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Under what conditions is it tens of picoseconds?

How does one test to see if your ideas are wrong? This would seem to require math.

GPS may be complicated, but it was designed to work using Einstein’s relativity. If that’s wrong, GPS wouldn’t work. And yet it does…

Clock signals between separated atomic clocks. You tell me - it’s your conjecture. According to your equations, the propagation time would vary, so a GPS clock being synchronized at one time of day would have a different delay than at another time. The system would have to account for this so that the GPS clocks could all show the same time. Is there any evidence that this is the case?

If you mean like the K-T impact, then no. Species go extinct all the time by evolving into a new species. Various species of Homo (e.g. Homo habilis, or H. neanderthalensis) are extinct, but there was no “event” that killed them off.

That would be the case if the universe were static, but the universe is expanding

I don’t know in detail how Chinese submarines work, but I doubt the battery runs the main propulsion system. That requires a lot of power, and is likely run directly from a steam turbine. The battery might run a motor used in emergencies, when main propulsion is unavailable, capable of a few knots. If the primary propeller(s) became fouled, the emergency propulsion might be engaged, which likely has its own propeller. Different cultures place different emphasis on safety, and space is usually at a premium on a sub. And mistakes can be made. The US has safeguards and procedures put in place only after incidents revealed flaws, because sometimes they reveal flaws that don’t show up under normal ops, and are situations that you wouldn’t test for because it would be too dangerous to do so. e.g. There were significant changes made after the Thresher was lost in the 60s. https://www.usni.org/magazines/proceedings/2020/october/reflections-loss-thresher#:~:text=After the Thresher disaster%2C the,quick actuation in an emergency.

Batteries are a storage medium. The power comes from the reactor under normal operations. Batteries will supply a limited amount of power in case the reactor is scrammed. 2.6 MWh is not a lot of energy when considering a reactor that produces a full power of ~100 MW.

Who is “we”? Density is m/V if mass has units of kg, and volume is expressed in m^3, the units are kg/m^3. Or you could use grams/cm^3 No numbers. They aren’t necessary. This is a “you” problem. Stop blaming physicists.

The radiation we detect dates from the recombination epoch, ~380,000 years after the big bang.

If there was an absolute velocity we should see a diurnal effect in clock signals, since at noon we would be traveling at a different absolute speed than at midnight. The effect should also show an even larger fluctuation over the course of the year, from the change in orbital velocity. Do you have evidence of this?

k has units. you just don’t know what they are. That’s not the same thing. Like when you see 2x = 5, you don’t know what x is until you solve the equation. It doesn’t magically become 5/2 only when you solve it. There’s no time dependence here.

A gravitational field contains energy. Energy is a source of gravity.

The danger right now is people being too credulous and thinking that AI is actually intelligent and not some fancy predictive text algorithm.

The ISS is only about 400 km above the earth, which has a radius of about 6400 km.

What does this have to do with your assertion about evolution?

Center of mass in the hips, according to the study reported here https://www.dailymail.co.uk/sciencetech/article-6368865/T-Rex-turn-like-figure-skater-hell-far-agile-thought.html

A T. rex that was about 4 m tall, would be about 13 m long. The length of the tail factors into the torque, as well as the mass.

Inversion? Let’s say you have the equation 2x = 5 You can divide both sides by 2, and get x = 5/2 If you have F=-kx, you can divide both sides by x and get k = -F/x, or you can divide by k and get x = -F/k These are math rules that you seem to be having trouble with.

Which has already been shown to have been skewed toward the company and not the worker, during the last ~5 decades in the US

So the “big three” auto makers have settled, raising wages by 25% over the contract. “Ford, for example, said that the contract would make each vehicle the company produces around $900 more expensive.” https://www.thestreet.com/automotive/former-ford-ceo-has-a-blunt-warning-for-workers-following-the-conclusion-of-historic-auto-strikes But for an $18,000 car, that’s just a 5% bump over 4 years. Not really a big driver of inflation (Also, Toyota (non-unionized) is giving its workers raises, presumably to fight against unionization efforts and/or defections.)