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seen Feb 6 at 15:46

Dec
27
asked Why doesn't an electron accelerate in a circuit?
Nov
19
awarded  Commentator
Nov
19
comment What is the physical meaning of a product of vectors?
@PeterShor What other vector would you recommend to get an intuitive feeling for products? And please explain why the same technique can't be applied to Displacements too? After all, they are vectors too aren't they?
Nov
19
comment What is the physical meaning of a product of vectors?
Note that I said that vectors are quantities that behave like displacements. I never said that vectors are quantities that cause displacement. Please clarify.
Nov
19
comment What is the physical meaning of a product of vectors?
@mcandril I think we can think of vectors as displacements. In your example, the wall doesn't move because the resultant of forces is zero that is, the wall exerts a normal force which cancels out your weight. In terms of displacement, it is the same as walking from A to B(your weight) & walking back following the same path backwards from B to A (normal force) & hence you have no apparent change in position.
Nov
17
comment What is the physical meaning of a product of vectors?
Thanks for answering but I didn't understand anything because I'm not familiar with abstract algebra :( And further, since we are using vectors in Physics, I believe there must be a physical way of looking at vectors rather than an abstract mathematical one.
Nov
17
comment What is the physical meaning of a product of vectors?
Why can we not think in terms of displacements? Aren't they vectors too?
Nov
17
comment What is the physical meaning of a product of vectors?
@Georg Still didn't understand what a product of displacement means :(
Nov
17
comment What is the physical meaning of a product of vectors?
@Georg Can you give an example?
Nov
17
asked What is the physical meaning of a product of vectors?
Oct
25
asked How must you spin the ball to make it alternate between 2 positions?
Sep
16
asked What is the electric potential at a point?
Sep
2
accepted How can area be a vector?
Sep
2
comment How can area be a vector?
What you said makes sense though I'm not fully satisfied. Thanks a lot :)
Sep
1
comment How can area be a vector?
Secondly, you said that this concept doesn't work so well in higher dimensions. So does that mean that my question about the direction of a sphere's area is invalid? If so then is area a scalar in this particular case since considering it as a vector cannot specify its orientation in space?
Sep
1
comment How can area be a vector?
Thanks. Just a few clarifications. You asked me to imagine a person standing on a paper & consider the direction of his head as representing the normal vector. But suppose this person was standing on the exact opposite face, then won't the orientation of the paper still remain the same? But now the direction of the vector is in the opposite direction. Please clarify.
Sep
1
awarded  Supporter
Aug
31
asked How can area be a vector?
Jul
29
awarded  Scholar
Jul
29
accepted Heat & thermodynamics question based on heat loss