gopi

What is the bond order of the C-O bond in acetone? a). 4 b). 1.5 c). 0.5 d). 1 e). 2

tanx=1/1,tany=1/3 then cos2x=sin2y

help me solve: find x in cos^2x - 2 sinx cosx - sin^2x = 0

23.1 .. A point charge q 1 = +2.40 mC is held stationary at the origin. A second point charge q 2 = -4.30 mC moves from the point x = 0.150 m, y = 0 to the point x = 0.250 m, y = 0.250 m. How much work is done by the electric force on q 2 ?

we know sec^2(x)-tan^2(x)=1 now sec^2(x)=1+tan^2(x) now tan^2(x)/sec^2(x)=sin^2(x) [tan(x)=sin(x)/cos(x)] [sec(x)=1/cos(x)]

either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length