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natural selection is a process which directs all biological evolution it is a process that directs genetic changes which when proved to be adapted
a general agreerncnt anlong nll the human evolutionists who may have a very radical philosophical hackground and convictions is that man is the
by what percentage should the pressure of a given mass of gas be increasedso as to decrease its volume by 10 at a constant
language a powerful tool for communication should have played a very important part in the evolutionary history of human species two relevant
how can we calculate the rate of effusion of nitrogen gas from a cylinder and how much time it will
in the last unit we traced the human evolutionary history mostly from a palaeontological viewpoint although still fragmentary the available fossil
2 kg of ice at -20 degree c is mixed with 5kg of water 20 degree c in an insulating vessel having negligible heat capacity calculate the final mass
solve the limit problem as stated limit x tends to 0 tanxx1x2 is lim m tends to infinity cos xm m is i need the procedure of solving these
what is the bond order of li2minus anion molecule ans no of bonding elecrtons 3 valence anti bonding 0 given its statethus bond order
a galvanometer together with an unknown resistance in series is linked across two identical batteries each of 15v whenthese batteries are connected
in plotting a x y graph which axes is the dependent variable and which is an independent functionans normally or you can say conventionally we take
what is the work done to take a particle of mass m from surface of the earth to a height equal to 2r rradius of earth ans initial pe - gmmrfinal pe
if the normal to yfx makes an angle of pie4 with y-axis at 11 then fx is eqivalent toans the normal makes an angle 135 degree with the x axisalso f
a small bucket of mass m kg is attached to a long inextensible cord of length l m the bucket is released when the cord is in horizontal position at
a group of 5 people are going to meet weekly at the library for 4 weeks every week two people are selected at random to speak every person may speak
will there be any change in hz of sound if two vibrating body has the similar hzans yes it depends on the path difference among themlike in
a source producing sound at frequency 400 hz is moving along the y axis with a speed of 22 metre per second a listener is situated at position 660m0
a tunning fork produces 4 beats per second with another tunning fork of frequency 256 hz the first one is now loaded with a little wax and the beat
a cubical block of wood weighing 200g has a lead piece fastened underneath find the mass of the lead piece which will just allow the block to float
a hollow sphere of radius r lies on a smooth surface it is pulled by a horizontal force acting tangentially from the highest point find the distance
the color of sky is blue but the wavelenght of violet and indigo is small than that of bluethen why the color of sky is blueans the particles in
an equilateral triangle is inscribed in a circle of radius 2 cm if p lies inside the triangle then the minimum sum of distances of p from the sides
taking 2xm and solving the quadratic for getting dgt0we get range 34 infinity
the ph of an aqueous solution of baoh2 is 10 if the ksp of baoh2 is 110-9 then the concentration of ba2 ions in the aqueous solution is ans oh-
a sphere of mass m and radius r is on a smooth fixed inclined plane in equilibrium if now the sphere is displaced by a small distance along the plane