excral

joined 2 months ago
[–] [email protected] 1 points 5 days ago

To escape a body of mass you need to have enogh velocity (kinetic energy) to overcome the gravitational pull of that body. You can imagine it like a ball sitting in a bowl. With little velocity it will just roll back and forth but if it's fast enough it can roll out of the bowl and escape it's influence.

That critical speed is called "escape velocity" and it depends on mass and distance from a body. The escape velocity of earth (from the surface) is about 11.2 km/s and the sun's escape velocity (from earth orbit) is about 42.1 km/s. Earth orbits around the sun at about 29.8 km/s. If you launch in the direction of Earth's orbit, you will orbit the sun already at about 41 km/s, so you "only" need 1.1 km/s more to escape the sun, too.

If you tried to reach the sun, you could launch in the opposite direction leaving you orbiting the sun at about 18.6 km/s. Since there is almost nothing in space you won't slow down from friction and the orbit won't decay. Instead you'd have to accelerate opposite the direction you're traveling. Now, calculating exactly how much you'd need to decelerate isn't trivial since you don't want a stable orbit but an elliptical orbit that just touches the sun at the closest point (perihel). I don't know how much deceleration that takes, but it's propable that it's easier than accelerating by 1.1 km/s to escape the sun.

[–] [email protected] 5 points 1 week ago (3 children)

That requires neither engineering-level math nor paper nor patience. All you need is the chain rule and some basic knowledge of sine and cosine:

The derivative of cos is -sin, but because of the 6x you get an extra factor 6. The sine function is periodic on 2pi, so sin(6*2pi + pi/2) = sin(pi/2) = 1. So the result is -36

[–] [email protected] 18 points 3 weeks ago (1 children)

Don't forget first party Linux support and Proton to add Linux/Mac support to many windows exclusive games.

[–] [email protected] 3 points 1 month ago (1 children)

The alt right/populists turned politics basically into a game of us vs them where you associate with "your" party like you would with a sports team. If you say something against "their" party, they take it personally just like saying something bad about their favourite sports team. If "their" party screws up they are way more lenient, like they would be if their favourite does a foul. They win and lose with "their" party and make their personal success dependent on it. That might not be rational but it's normal behaviour for human to associate with groups like that. It just shouldn't happen with politicians and political parties.

[–] [email protected] 14 points 1 month ago (2 children)

The difference is, that you could just continue using XP until Win7 was released or continue using Win7 until Win10 was released. Win10 will reach end of life next year and then the only supported Windows will be Windows 11. Vista or Win8 were never as forced as Win11 is now.

[–] [email protected] 5 points 1 month ago

Plot twist: the products were placed by competing brands because they knew the product placement would backfire

[–] [email protected] 2 points 1 month ago

Apparently x dot com stayed with PayPal until 2017 when Musk bought it back. While we don't know the price, it's probably been in the millions

https://qz.com/1026167/elon-musk-just-bought-x-com-the-domain-he-once-owned-from-paypal

[–] [email protected] 2 points 1 month ago

Isn't the main argument of Christianity that the second option was better than the first?

[–] [email protected] 10 points 2 months ago

If it was staged, the only feasible way would be that he wasn't shot at all and all we saw was fake blood. Regardless, I don't think it was actually staged

[–] [email protected] 2 points 2 months ago

Malta is correct and Cyprus drives on the left, too.

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