Can a vectro have zero component along line and still have non zero magnitude?

Answer the following : (i) A vector has magnitude & direction. Does it have a fixed location in space? Can it vary with time. (ii) Will two equal vectors vec(a) & vec(b) at different locations in space necessarily have identical physical effects? (iii) Can three non zero vectors, not in one plane, give a zero resulatnt? Can four vectors do ? (iv) Can a vector have zero magnitude if one of its components is not zero?

How many minimum number of coplanar vector having different magnitudes can be added to give zero resultant?

Slope of line is non zero real number .

Can a body have the momentum if it moves along a straight path?

Minimum number of coplanar vector having different magnitudes can be added to give zero resultant is 3. True / False

Three forces acting on a body are shown in figure. To have the resultant force only along the y-directon, the magnitude of the minimum additional force needed along OX is

The neutron is a particle with zero charge still it has a non-zero magnetic moment with z-component 9.66 xx 10^(-27) A-m^(2) . This can be explained by the internal structure of the neutron. The evidence indicates that a neutron is composed of three fundamental particles calleed quarks : an "up" (u) quark, of charge + (2e)/(3) , and two "down" (d) quarks, each of change - (e)/(3) . The combinations of the three quarks prodcues a net charge of (2e)/(3) - e/3 - e/3 = 0 . If the quarks are in motion they can produce a non-zero magnetic moment. As a very simple model, suppose the u quark moves in a counter clockwise circular path and the d quarks move in a clockwise circular path, all of the radius r and all with the same speed v see figure. The current due to the circular motion of the u quark :-

Read each statement below carefully and state with reasons and examples, if it is true or false, A particle in one-dimensional motion (a) with zero speed at an instant may have non-zero acceleration at that instant (b) with zero speed may have non-zero velocity (c) with constant speed must have zero acceleration, (d) with positive value of acceleration must be speeding up.

Read each statement below carefully and state with reasons and examples, if it is true or false , A particle in one-dimensional motion (a) with zero speed at an instant may have non-zero acceleration at that instant (b) with zero speed may have non-zero velocity, (c) with constant speed must have zero acceleration, (d) with positive value of acceleration must be speeding up.