Recent content by bijanv

but the problem is... where do I get this information!? that was wat my question was in the first place :smile:

well yes I am in grade 12 and she is looking for all of those things. There MUST be a correlation between the two variables in the data. I have decided to go with Brain Size vs. Intelligence for now.. as I found a data set but she has apparntly seen this same presentation a few times now so...

Hey everyone, I need to do a project in which I have to present a data set and analyze it but I am just wondering if you know of any good sources where I can find Data Sets. :rolleyes: Especially if they're really interesting data. :-p Thanks!

i think you just answered your own question... "how much faster does the stopper have to be spun" not how do you make it spin faster?

anyother ideas?

from what I know... a centripetal force is not a force by itself (and therefore it is not recognized as a force in FBD diagrams) ... Its more like a behaviour that we call it centripetal but it is actually caused by the forces u mentioned (friction, tension, etc.) normal force can also be a...

NateTG could you explain the double sided ramp a bit more? lightgrav, I am not sure what you mean by your idea of a centrifugal pump but it sounds interesting! thanks for the responses!

yeah google didnt help too much. its the same design over and over which is okay but i'd like make something unique but nothings coming to my mind.

Hey everyone, I am in need of a little brainstorming help for a project Basically we have to design and build a marble-launching device that will accurately launch a marble within a 4 - 9 m range. This project is all about consistency and reliability so we have to be able to hit the same spot...

yup but in this case, the normal force is = to the force of gravity on the shovel if we assume if the shovel is massless... it means there's no force of gravity acting on it and therefore no normal force... correct? i'm really confused.. so do we have to find the vertical force that she is...

normal force would be 0 then as there is no object for there to be a gravitational force on? but that would make everything (being coefficient of friction and force of friction.. according to the equation Ffriction = mew * Fnormal) equal to 0

Okay I'm really stumped on this question and I would be really glad if someone can take me step by step on how to do this question... I have the answer but I have no clue how to obtain it! The Question is: I obtained the answer for the force of friction by just using Fhorizontal = cos55 *...

great discussion thanks! i don't think there can be much more said about this unless there's thorough experimenting about this topic.

but this is to be more of a physics related question, so i don't think this would help that much although i will look into it no one can even help start a discussion on this!? another though... re-arranging F = ma we get a = F/m therefore if the football is thrown with the same force...

Hey guys, in an article it states: Why is this true? What other info can I obtain from this/what info is missing/what is (in)accurate? From what I can think of myself. The reason of why this would happen is that since helium is lighter, the force the helium particles are exerting on...