Physics-
Wires 1 and 2 carrying currents i1 and i2 respectively are inclined at an angle q to each other What is the force on a small element dl of wire 2 at a distance of r from wire 1 (as shown in figure) due to the magnetic field of wire 1

Physics-General
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A particle
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at an angle of 60
with horizontal. From what height
should an another particle
be projected horizontally with velocity
so that both the particles collide in ground at point
if both are projected simultaneously? 

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or
which is equal to the velocity of
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if time of flight of the particles are equal or 

or

or
A particle
is projected from the ground with an initial velocity of
at an angle of 60
with horizontal. From what height
should an another particle
be projected horizontally with velocity
so that both the particles collide in ground at point
if both are projected simultaneously? 

physics-General
Horizontal component of velocity of
is 10
or
which is equal to the velocity of
in horizontal direction. They will collide at
if time of flight of the particles are equal or 

or

or
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Two wires AO and OC carry currents i as shown in figure One end of both the wires extends to infinity
, the magnitude of magnetic field at a point P on the bisector of the two wires at a distance r from O is

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Two identical discs of same radius
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as function of times best represented by


So,
At
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are rotating about their axes in opposite directions with the same constant angular speed
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and
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and
is
as function of times best represented by

physics-General

So,
At
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Ethyl alcohol is also known as:
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Let f : R →R and g : R →R be continuous functions, then the value of (f(x) + f(-x)) (g(x) – g(-x)) dx, is equal to
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