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rebika
Questions and answers by visitors named
rebika
Questions (8)
a water tank is supplied by a pipe of diameter50cm the pipe is replaced by k pipe each of which has diameter 10cm.find k.
1 answer
416 views
the areas of the three non parallel face of right rectangular prism are in the ratio 15:9:4 and its volume is 300.determine the
2 answers
515 views
if the line through A(k,p) and B(3,2) and the line through C(k-1,p+2) and D(-4,3) meet at(1,-2).find the values of k and p.
1 answer
292 views
5 years from now a boy's age will be 2 time the square of what it was 5 years ago.how old is he now?
a)15/2 years c)7 years b)3
4 answers
1,002 views
if an ox extracts only 50% of potential energy in grass and out of this if the ox used 40% to build up its body ,then the
1 answer
353 views
what volume of 0.85M oxalic acid (C2H2O4)
solution would be required to the following equation ( atomic mass C=12 ,O=16 and
1 answer
409 views
why oxides of carbon ,carbonates ,hydrogen carbonates ,cyanides and cyanates are not organic compound?
2 answers
533 views
A 76 kg rock is rolling horizontally at the top of a vertical cliff that is 20m above the surface of lake.the top of the
3 answers
939 views
Answers (6)
let vy=is vertical componet then t' time of flight x=ut' y=vyt'-gt'^2/2 then eliminate the two equation H= y +gt^2/2 and to find vy vy=yu/x +gx/2u D+x=ut substitute the tow equation, D=usqrt(2H)/g -x
x^3+2x^2-5ax -7/x+1 R1= 5a-6 x^3+ax^2-12x+6/x-2 R2=4a-10 2R1+R2=6 2(5a-6)+4a-10=6 a=2 use remaider theorem .
at room temperature=20°c v=f*wavelength v=342.2m/s wave length=10m f=342.2m/s/10m 34.22Hz
113040m cube
volume 3.14*0.03*120 11.304m cube
1.08m
