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Posts by kajal

Total # Posts: 20

Maths
How does resistance of wire change when its diameter is increased by 20%

maths
if the perimeter of a rectangle is 76 cm ifits are in the ratio 11:8 find its area

chemistry
At room temperature , the density of water is 1 g/ml and the density of ethanol is 0.789 g/ml . What volume of ethanol contains the same no. of molecules as are present in 175 ml of water?

Physics
R^2=R^2+R^2+2R.RCOSx ;cosx=-1/2 x=120degree

geometry
When v mark 4 points on a paper how many line segments are formed ....

geometry
How can 3 noncollinear points determine a plane

geometry
What's the difference between concurrent lines and intersecting lines

Calc
Evaluate the following indefinite integral integral of the funtion (x^3)/(x^2-49)dx

calculus
Find the following limit where f(x) = 4x2 − 3x. limit delta x --> f(x + delta x)- f(x)/delta x can someone please help me

Precalculus!
thanks...i got that..the problem is i cant put that into webassign..it wont take my answer....how can i further simplify this answer

Precalculus!
So I have this major assignment due, and I cant seem to figure this one out: A right triangle is formed in the first quadrant by the x- and y-axes and a line through the point (5, 3). Write the length L of the hypotenuse as a function of x(the x-intercept of the line). Can ...

math 12
i got the wrong answer from the back, and i know that imnot dooing it right. please try to help me on this hard question. THE ANSWER WAS:16 solve the equation: 3log(x-15)= (1/4)^x i don't know how to solve it algerbrically. the teacher doesn't want us to solve it ...

calculus!!! please help!!!
thanks so much!!!

calculus!!! please help!!!
f(x)=2x^3-x^2+1 [1,4]=interval Set up the limit process (once with right endpts, and the other with left entdpts.) to find the area under the curve and above the x-axis on the given interval Should the right and left endpt limit set ups have the same area? If so what is it? ...

Maths 11th Grade
x+9+81=90 x+90=90 x=90-90 x=o

math
30%

Physics
A circular-motion addict of mass 85 kg rides a Ferris wheel around in a vertical circle of radius 10 m at a constant speed of 6.1 m/s. (a) What is the period of the motion? __________s (b) What is the magnitude of the normal force on the addict from the seat when both go ...

Physics
The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.35 with the floor. If the train is initially moving at a speed of 43 km/h, in how short a distance can the train be stopped at constant acceleration without causing the ...

Chemistry
i don;t kmow g

acids and alkalis
5 uses of acid and alkalis

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