If stuff like forcefields are allowed then you should just give your ship a General Products hull.

Well, you could end each conflict by lobbing a few ICBM's at the enemy. That'd stop them for sure.

These weapons are an alternative to lobbing nukes. A nicer alternative, something akin to the difference between removing a tumor with a scalpel or with a sledgehammer. Neither is fun for the tumor, but the surrounding tissue prefers the scalpel.

Decelerating it with a magnetic field isn't feasible. The current in the railgun does 2 things:
1. It makes a hell of a magnetic field
2. It runs through the projectile. That current undergoes a Lorentz force due to the magnetic field. The Lorentz force moves the projectile.

How are you going to induce that current in a projectile that is heading towards you? Without it the magnetic field will not influence the projectile.

And that is besides the technical challenges in making a magnetic field with enough strength to stop this while enveloping the entire ship.

I'd upgrade the goalkeeper, but I am Dutch so that was to be expected.

That squared in "speed squared" is much of the fun.

Nah, the terrorist would attack during a new moon.

Luckily the shell rotates together with the planet. Although I can't imagine that that makes it easy.

Depleted uranium has the tendency to ignite with air at 700 ÂC. It may be so that the compression heating from the speed exceeds that temperature. In that case the projectile may turn into a nice cloud of poisonous uranium oxide. On your ship.

In short: I'd advise a tungsten coating around the uranium if they go that way. The hull of the target ship will strip away the tungsten. The friction will make it exceed 700 ÂC. The scientists working on this probably already know that.

While oxygen is the most common oxidizing agent it is not the only one or even the strongest one. Oxidizing just bears a similar name because usually oxygen is the oxidizer. Chlorine is more powerful and fluorine is even stronger than that.
Some nasty stuff like ClF3 will oxidize with the silicon in sand, expelling the oxygen.

F2O2 although the properties are interesting.
For more on really really dangerous chemicals and why you do not wish to handle them read Ignition!.

Not only with oxygen. Chlorine and fluorine oxidize stuff way faster. That is why ClF3 is so much "fun".
(burns sand, burns concrete, burns water, burns glass, burns workbenches, burns researchers, burns labs, burns buildings. All while emitting nasty fluorine based gasses like large quantities of HF. Fun stuff.)

I always search for a version that doesn't require pointless rights. That one may be paid.
Why does $GAME need to access my location data?
Why does $NOTE_APP need to access my contacts?

Direct money isn't as expensive as a virus that modifies my bank transfers.

While they only use a few data points that's more than most people use.
Every experiment has a chance of incorrect results. The Mythbusters are not some kind of gods that do not suffer from that.
If they find something to be impossible or improbable then that is only valid within their test parameters. They must choose narrow test parameters to prevent 3 hour shows that Discovery would not put on TV.
However if they tested it and found it to be busted then it is improbable that it is not busted. If other data points (usually experience from the fans) indicate that their test was flawed then they are not above retesting with a new set of test parameters, a set that may cause the effect.
The CD's is not the only case they had to revisit a myth. Neither is it the only case where their original results were wrong. While confusing, going back to a debated result and retesting it is a part of science. A very important part.

For getting the CD parts out of a drive:
In a desktop, don't. Install a new one. It's to much hassle.
In a laptop: Ask the supplier. If it is too expensive then I'd advise an external drive if that is acceptable. If both of these are not an option you can clean them with pincers and a lot of time. Just get a decent supply of painkillers to alleviate cramp from holding that d*mn pincers so long.
Myself: nowadays I don't use optical media often enough to even have it in my system. Granted, the external drive works just fine in the extreme case that I need an optical disk, but I haven't even used that one for over a year.

Magstrips on credit cards are extremely durable (besides the fact that they are outdated). It required a beast of an electromagnet to corrupt a bit on them. And those were written by a cheap USB card reader.
Mythbusters Season 2003, Episode 3.

Myth has it that some people have broken a window in their car just by running the custom audio set at max. More often the speakers or amplifiers are blown.

A kid hears from his hearing care that his hearing is damaged. His response: Dang, so max volume on my current stereo will soon not be enough.

There is an interface, else the dash would not be able to display data from the power system. If the dash sends a specially crafted corrupt data package to the power system it may be able to influence it.
Not completely separate.