akashgenius

That still dosen't actually relate the fundamental forces- i mean, if we assume units such as N/gm or N/eV, sure it gives us a way to compare the forces per unit but that dosent throw any light upon the strength of the force. grams and electronvolts are completely unrelated units, you can't possible compare them. and besides- even if you do assume a characteristic particle for comparison, the nature of your deductions depend entirely on the properties of the particle, not on the forces themselves. it isn't possible to compare the forces unless you can link them to each other. and as to comparing their force at a fixed distance, that's it, the measurements of the forces will be unique only to that distance and does not shed anything on their so-called strength. i mean, at a distance of 100 m i can say that the force of gravity is strong than the strong nuclear force. it just dosent make sense to say that the strength of an electric current is stronger than the gravity of the earth. they're two completely unrelated things.

i hav a problem... As i understand it, there are 4 fundamental forces. now, these have been given various levels of strength. eg-you could say that gravity is the weakest force. however, when you talk about strength, there just isn't any way to compare their strengths. if we take gravity and electromagnetism, for example, gravity depends on the mass of 2 (say) particles, and electromagnetism would depend on the charge on 2 particles. so how is it possible to compare these forces when you have no possible relation between mass and charge? i mean to say that- since we have not yet found a link between the fundamental forces, we cannot compare them. if x unit charge attracts a -x unit charge with some force, you cannot say that it is stronger than the force exerted between y-unit--y-unit particles. the mass and charge are totally different things. similarly, the force of gravity between me and the computer is more than that between a quark in the computer and a quark in my body, yet strong interaction is the strongest force. so just how can anyone compare these forces? it's like saying that water is heavier than iron because the weight of the ocean is more than the weight of an iron nail. or is there some other meaning for strength here? can someone pls help me out?

i dont know but i just cant help typing using txtspk anyway i get it now. you could simply use the apparent displacement and theta to calculate the distance! thanx guys.

im no expert at this but i dont think u can measure the position and velocity of the particle simultaneously as u say it because since the 2 particles are entangled if u try to measure the postion of 1 particle, u disturb it's velocity and at the same time the velocity of the other particle no matter how far apart the particles are. so it comes down to the same reason u cant measure the position and velocity of a singular paticle simultaneously. (plz correct me if im wrong)

This isnt exactly hw so u can answer it freely, just out of curiosity, more like. well, i've read about parallax and what it is and how we can calculate ditances of far-off bodies with it, i just wished sum1 cud tell me the equations with which u can calculate the distance of the body with it. thx.

of course there is a way of harnessing energy from cosmic radiation though it's not cost-effective so definitely not worth it. plus this cant be done on earth(except at the poles). one way is a plasma drive The solar wind could offer a practical way to travel long distances through space. it is a spacecraft engine that could be powered by this irregular stream of particles from the sun. Inside the spacecraft is a ball of plasma. Powerful magnets keep the plasma in place. When the solar wind comes close to this plasma, it repels it, thus pushing the spacecraft along. This can be useful for long-distance navigation. similarly we can also use a gigantic turbine with balls of plasma for the spokes. this, connected to a generator can produce electricity. since cosmic rays contain upto 50 J per paticle energy, this would be relatively less when u compare it to harnessing solar energy.

more or less than 500 teraflops?

can a shape memory alloy mesh be used to generate voltage controlled mechanical counter pressure?