/sci/ - Science & Math

Uhh Is this guy an idiot?

>>9507031

>>8675098

>>7386174
>>7386176
Keep parroting your high school science teacher, it'll make you look really smart.

>>7117121
>Centrifugal force is an illusion, it is just inertia.

>>6779502

>>6460572

Wow. So much argument over the idea of electricity as energy. In the strictest definition it is not, however we can also say thermal energy doesn't exist either.
At some point we all need to use our thinking abilities to process that colloquially "electricity" can be a type of energy.
Looking back at my high school textbooks it says "electrical energy" as one of the 7 types of energies. Now obviously this textbook has deficiencies, but due to a large number of people learning it this way and it prevalent use even on an industry level it is a de facto energy.
If this bothers you'll so much I see two things you can do.
1. learn how to interface with a majority of society and understand how powerful de facto standards are.
2. work to improve our education system so we don't have "electrical energy" and countless other errors like "Centrifugal Force".

>>5918770
Look at the flywheel capacitor vacuum joints the navy uses, their friction is so low most calculations just ignore it for time periods short then 3 months. Using one of those joints would make it negligible for most things as it is even lower then a foil bearing system which is really neat. Also if the two halves spin up then detach then there is no fiction contact to deal with, though that would make it hard to turn the gravity off later.
Sorry, now I am a little confused on what problem you are trying to solve? What is the mass of the object in question? That's got a lot to do with how much energy it will take to spin.

Just list the specs and the problem.
Goal of 1 G (I like .8 G, it is heavy enough that things are mostly normal, but light enough that materials stresses are low enough that cheaper materials and simpler building designs can be used without breaking, also lowers internal energy consumption for moving cargo and getting up to speed)
Radius of approximately 22 km
Rotated at 0.2 rpm
Mass ???
Reason for doing this ?Ark?

Does the centrifugal force exist or not? Someone please explain.

>>5710548
No, the change in the field is retarded and advanced by the speed of light giving the charge precognition that it will be raped by a field in the future and delaying the actual fields so it takes the speed of light time to get there.

>inb4 over zealous physicist throw out a perfectly good (advanced) solution to Maxwell's equations for no good reason at all other than ignorance

>>5298462
Are you stupid or just trolling?

>>5285221
>Hurr durr a square with the side length 1 can not exist

That's a stupid statement. A square with the side length 1m does not exist, but 1 any unit of measurement? Of course it can.

The speed of light in m/s is a real world value, and it's an integer. Simply because I define the length of one meter to achieve that result.

Lengths, or anything that has any unit of measurement does not have a fundamental value.

the only xkcd comic I like

Is this comic wrong or is it because I don't get the humour in it?
Centrifugal and centripetal are words that both exist, so this cartoon is wrong, or I just don't get the gag or whatever.

Sup Sci so where do you get you literature from?

I am supposed to be doing a literature review on employability skills for engineers in the UK but i cant find any sources please help!

what is the fundamental frequency of this function
2+3cos(4t)+5sin(8t)+5cos(16t+Pi/4)

is xkcd just fucking around or can you actually say this about centripetal force?

>>1859047

oh derp... yes, just thought about it, simple when think about it, sad thing is it's been bugging me for ages!

thanking you with pic.