Why don't two magnetic lines of force intersect each other ?

can two isothermal curves intersect each other ?

Explain why electric lines of force donot cross each other.

In Fig.6.62, two chords AB and CD of a circle intersect each other at the point P(when produced)outside the circle.Prove that (i) trianglePAC~trianglePDB

In Fig.6.62, two chords AB and CD of a circle intersect each other at the point P(when produced)outside the circle.Prove that (ii)PA.PB=PC.PD

Can two streamlins cross each other?

Action and reaction force do not balance each other. Why?

The diagonals of a quadrilateral ABCD intersect each other at the point O such that (AO)/(BO)=(CO)/(DO) . Show that ABCD is a trapezium.

While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function fo each other?

Two spherical balls are charged with 1.2 and 4.8 coulomb of charges. The distance between their centre is 120 cm. Find out the point where the forces neutralise each other.