In Q,NO, 111, `f_(2)` is

In Q,NO, 111, f_(3) is

In Q,NO. 111, f_(2) or f_(1) is

Find : 111^(2)

Three equal charges are placed on the three corners of a square. If the force between q_(1) and q_(2) is F_(12) and that between q_(1) and q_(3) is F_(13) , then the ratio of magnitudes (F_(12)//F_(13)) is

Three equal charges are placed on the three corners of a square. If the force between q_(1) and q_(2) is F_(12) and that between q_(1) and q_(3) is F_(13) , then the ratio of magnitudes (F_(12)//F_(13)) is

If the distance between the points P(a,2,1) and Q(1,-1,1,1) is 5 units find the value of a.

Addition : (1.111)_(2) + (11.11)_(2) + (111.1)_(2) + (1111)_(2)