# Posts by sachin

Total # Posts: 39

**Chemistry 11th Grade**

Nitrogen form five compound with oxygen in which 1.0 g of nitrogen combines with 0.572,1.14,1.73,2.28 and 2.85g of oxygen respectively .show dis figure agree with law of multiple proportion.

**Maths IX**

volume of the 5/2 cm sphere = (4/3)?(5/2^3) = (625/6)? cm^3 volume of shell = (4/3)?(5^3) - (4/3)?(4^3) = (244/3)? cm^3 since the mass is a function of the volume, (625/6)? × X = (244/3)? × 6.25 X = 48.8kg

**Mathe**

If x=-1,y=2 Is A Solution Of Epuation 2x+5y=a, Find The Value Of a.

**chemistry**

165 joule

**SCIENCE**

answer

**Science**

I need help!

**Physics**

Find energy of an X-ray photon which can impart maximum energy of 50 keV to electron?

**math**

A selection test consists of two parts, A and B. 75% of the candidates cleared part A and 60% cleared part B. 20% failed to clear either. What is the % of candidates who cleared one of the parts but failed to clear the other? Pls help me

**math**

How many of the 2-digit numbers, that can be formed by using the digits 1,2,3,.......,9 without repeating any digit, are divisible by4? If 2 boys and 2 girls are to be arranged in a row so that the girls are not next to each other, how many possible arrangements are there? A ...

**Maths**

Answer is 20 because 10% means 20 student are those which are not studying any subject.

**dr.virendra swarup educationcentre**

Construct a triangle ABC such that BC=5.2 cm , AB=4.8cm and median CM= 3.6cm

**Chemistry**

can i get full solution?

**algebra**

two equal sides of an isosceles triangle are (3x-1)and (2x+2) units . third sides is 2x units . finds x and the perimeter of the triangle

**maths**

the angels of atriangle are in A.P. , the greast is five times the least , find their angels in degrees .

**maths**

140 children were watching a magic show. The number of boys were 20 more than twice the number of girls watching the show. How many girls were there?

**math**

Percentage = No. of books x 100/ Total number of books. Thus, 90x100/360 = 25%

**physics**

does the flame of gas stove emit light?explain

**physics urgent**

image distance 2metres behind mirror height is 1.5metres for plane mirror focal length is infinty so 1/f=1/v + 1/u reduces to v= -u v= -(-2)=2 magnification = -v/u=1

**Math**

Your welcome.....!!

**Math**

given,olivia run 200m in 1 track meet. therefore, the distance oliva ran in 24 track meets =200x24=4800m. ie:the distance ran bt Olivia = 4800meter.

**Math 116**

Let n^1=Dollar spend on Jeans Let n^2=Remaining money Now,49-n^1=n^2 49=n^2+n^1 49-n^1=n^2 =49-n^1-n^2 =49-2n 2n=49 n=49/2 =$24.5 therefore,The total money remains=$24.5 The Money spend on jeans=$24.5

**CHEMISTRY**

Well, DNA is the genetic material that determines everything. RNA, however, is what actually executes what instructions the DNA tells it to do. If the DNA tells them to create AIDS, they'll make AIDS. If the DNA tells them to create something that would fight cancer, they...

**maths**

Given, lenght of model ship=9m lenght of real ship=12m that means,there is 3m difference between the lenght of real ship and model ship. therefore, if the length of the ship is 28m then the lenght of the model ship=28-3=25m so,the lenght of the model ship=25m.

**ecology**

Inorder to find the age of a plant, cut the main stem and count the number of rings,which you can see on the interior part of the stem.

**wbnuwhui**

The Correctly punctuated sentence is, 2.Paloma did not make it to work for her car,broke down on the freeway.

**General: Exam help**

An essay can have many purposes, but the basic structure is the same no matter what. You may be writing an essay to argue for a particular point of view or to explain the steps necessary to complete a task. Either way, your essay will have the same basic format. If you follow ...

**Math**

sorry its wrong. inorder to get right answer, 36-1=35 now,(35)2...(square of 35) =1225. therefore the answr is 1225.

**Math**

Given,36-1x2 according to Bedmas Rule,multiplication has to be performed first. so,1x2=2 36-2=34.

**Math**

KAPS stands For "Knowledge Attitude Practises"

**B.V.B**

A 10G bullet is short from a 5kg gun with a velocity of 400m/s.What is the speed of recoil of the gun?

**physics**

according to newton's second law;it states that F=ma therfore,F(force of car)-F(force of airdrag)=ma ie:F-F=Ma inorder to find the "F" transpond one F from left hand side to right hand side. therfore,F=F+MA ie:F=280+(1354)x(3.0) F=4902. Therfore the force needed ...

**social studies**

To Find out this.... If the year is beginning with 10 the century will be 11.examples are given below. 2011-21st century 1990-20th century 1450-15th century

**world issuse**

MESSAGE

**math**

LXXVB LXXV IS 75 IN ROMAN TO DECIMAL AND B IS 11 IN HEX TO DECIMAL

**physics**

A rocket is fired vertically up from the ground with a resultant vertical acceleration of (a) what is the maximum height reached? (b) After how much time from then will the maximum height be reached?(take g=10m/s2

**algebra**

width= x lengtth=x+2 so x(x+2)=170 easy to solve....................

**11th grade**

Good

**calculus**

let f(x)=0.5x^3-4x^2-2x+5.a.use n deriv to graph f(x),f'(x),f"(X)on the window xmin = -5,xmax=10,ymin= -50,ymax= 10

**law**

hi i just wanted to ask this question because i am in a problem. can someone help with this I operate an auto parts shop. The shop has gone out of business, and all assets have been sold. The following debts remain: 1. $10,000 owed to suppliers for merchandise that was sold to...