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If a=1+2j-3k,b=2i+j-k and u is a vector satisfying a times u=a times b and a .u=0 then 2|u|^(2) is equal to

A heater A gives out 300 W of heat when connected to a 200 V d.c supply . A second heater B gives out 600 W when connected to a 200 v.d.c. supply . If a series combination of the two heaters is connected to a 200 V d.c. supply the heat output will be

Which areas in the world have gt 200 persons per sq. km?

The function u=e^(x)sin x,v=e^(x)cos x satisfy the equation (a) v(du)/(dx)-u(du)/(dx)=u^(2)+v^(2)(b)(d^(2)u)/(dx^(2))=2v(c)d^(2)v())/(dx^(2))=-2u(d)(du)/(dx)+(dv)/(dx)=2v

When excess of silver nitrate is added to to 200 ml of of 0.05M [Cu(NH_3)_4]Cl_2 solution then the weight of silver chloride formed is (Ag=108u, Cl=35.5u) -

When excess of silver nitrate is added to 200 ml of 0.05M [Cu(NH_3)_4]Cl_2 solution then the weight of silver chloride formed is (Ag 108 u, Cl = 35.5 u)

Which of the following relationships is valid for the root mean square speed (u_("rms")) , average speed (u_(av)) , and the most probable speed (u_("mp")) ?