Is the relation `R={(L_1, L_2) : L_1,L_2 in L}` and `L_1` is perpendicular on `L_2` an equivalence relation in the set L of all straight lines in the coordinate plane?

Let L be the set of all straight lines in the XY plane and let R be a relation defined in L as R={(L_1,L_2) : L_1, L_2 in L} L_1 is parallel to L_2 Show that R is an equivalence relation. What is the set of lines related to the line y=2x+3 ?

Let L be the set of all lines in the XY - plane and R be the relation in L defined by R={(l_(i)l_(j))|l_(i)" is parallel to "l_(j)l_(i)AA_(i),j} . Show that R is an equivalence relation. Find the set of all lines related to the line y=7x+5

Let L be the set of all lines in a plane and R be the relation in L defined as R={(L_(1),L_(2)):L_(1)" is perpemdicular to "L_(2)} Show that R is symmetric but neither reflexive nor transitive.

An electron and a photon each have a W.L. of 2Å . What are their momenta?

What is the area of the sector of a circle whose radius r and length of the arc is l.

Name the factors on which the value of l. E of an element depend.

Does the steady state current in RL circuit depend upon L.

The rate of a reaction is 1.2xx10^-3 L mol^-1 s^-1 . What is the order of the reaction?