Recent comments in /f/worldnews

5kyl3r t1_jdujvvq wrote

i speak russian, i'll translate:

​

>i'm a scared coward pussy bitch fascist terrorist, and i see that it's likely that we're going to ultimately lose this war, and if we do, i'll probably be tried in ICC and might go to prison for the rest of my life. i'm trying to walk back some things i've said that might incriminate me. please spare me.

4

grapehelium t1_jdujod7 wrote

I'll believe it when it happens. Netanyahu has made plenty of coalition promises in the past, and then when the time came to implement them he was unwilling/unable to. He did this often enough that a lot of politicians would not trust him, and that led to the last round of 4-5 elections Israel experienced.

Even if he stops the legislation now, he could also just start it up again in a few months. So is this a pause, or a cancellation, and even if it is a cancellation, can he be trusted?

253

yukimi-sashimi t1_jdujo4i wrote

There is nothing special about the gravitational pull of a black hole. It has pull according to its mass, just like every other object. If you have a black hole that is the mass of the earth, then about 4000 miles away from it, you'll feel a 1G pull.

If the sun was suddenly replaced by a black hole, we'd continue to orbit. We just wouldn't get any sunlight, and of course that would be an extinction event, but that's beside the point

5

AlexOwlson t1_jduiez6 wrote

Yeah both would get pulled. Mass ratio between the objects has effect, but in this case both the sun's and earth's mass would be negligible compared to the black hole, so we can assume the black hole is not pulled back into an orbit around the sun-earth system.

Distance is a more important metric, as the effect is divided by the distance squared. So the further away two objects are, the less they pull each other.

Now assuming both earth and sun gets pulled what would happen is the earth's orbit would become more and more elliptical over time and the average radius would also grow over time, moving us on average further away from the sun. At the closest extreme of the elliptical path it might be possible we could pass closer to the sun than before the black hole starting pulling, but this requires a bit more mathematics than I'm willing to do as I'm supposed to be working atm.

Long story short: only the sun itself can pull us closer to the sun, but as long as we are orbiting through approximate vacuum that's not gonna happen. With friction though, say if the sun's orbit passed through a gas cloud that might happen, but we'd probably have much more serious problems before crashing into the sun if that ever happened.

3

mateojones1428 t1_jdui6b4 wrote

Hospitals don't necessarily overcharge for everything, those prices are negotiated with insurance companies.

If you pay out of pocket a lot of times things are reasonably priced but obviously if you need significant hospital stay in the ICU or something you are going to be charged an insane amount of money, but even for just the nurse it cost the hospital 1000-1400 for 24 hours.

Whenever I've paid out of pocket for CT scan, MRI or my knee surgery-300, 500, 1700 respectively, those were all reasonable prices to me.

1

AlexOwlson t1_jduhvo2 wrote

Wouldn't even be possible. The gravitational pull would be stronger when we're closer to it than the sun, and weaker when we're on the far side of the sun. The earth spends half a year with it's center of mass closer to the black hole than the center of mass is to the black hole and half a year further.

Meaning if it were able to pull the earth at all, it would necessarily pull us further from the sun, not closer. The same is true for all objects outside the earth's orbit around the sun.

2