Thursday

December 18, 2014

December 18, 2014

Total # Posts: 47

**Chemistry Numerical**

The half life period of a radioactive element is 27.96 days. Calculate the time taken by a given sample to reduce to 1/8th of its initial activity
*November 20, 2014*

**Chemistry**

Calculate the time in which the activity of an element is reduced to 90% of its original value. The half-life period of the element is 1.4*10^10 years . Answer :- 2.13*10^9 years
*November 20, 2014*

**maths**

36over 25 rays to power 3over 2 whole rays to power5over3
*August 14, 2014*

**Chemistry**

What are the two ways in which the physical states of matter can be changed?
*July 4, 2014*

**Biology**

How animal cells compensate the function performed by vacuoles in plant?
*July 4, 2014*

**Biology**

Give an account of different components of nucleus and also mention their function?
*July 4, 2014*

**Biology**

Mention the role of DNA and RNA in living organisms?
*July 4, 2014*

**Biology**

Why do the primitive organisms have lesser number of cells as compared to more advanced forms?
*July 4, 2014*

**Angles,Lines and Triangles**

Two angles of a triangle are equal and the third angle is greater than each one of them by 18 degree.Find the angles.
*June 17, 2014*

**Angles,Lines and Triangles**

The sum of two angles of a triangle is 116 degree and their differences is 24 degree.Find the measure of each angle of the triangle.
*June 17, 2014*

**pragati**

in the given figure ABCD is a trapezium in which AD parallel to BC. Angle ABC= 90degree. AD=16cm, AC=41cm and BC=40cm.find the area of the trapezium.
*March 14, 2014*

**chem**

barium chloride+ alumium sulphate »barium sulphate + allumium chloride (balance the equation step by step)
*April 16, 2013*

**mathematics**

How many ordered pairs of solutions (a,b) are there to a/b−b/a−2/a−2/b=0, where a and b are integers from −100≤a,b≤100?
*March 16, 2013*

**geometry and combination**

okay at least somebody give a hint
*March 16, 2013*

**math**

Suppose P is an invertible 3×3 matrix with real entries and P4=2P. Find the determinant of 7P.
*February 13, 2013*

**math**

What is the minimum value of N that will make this statement true: If we pick any N composite numbers from 1 to 1000, then we can find 2 numbers whose greatest common divisor is not 1. Details and assumptions You may use the fact that there are 168 primes from 1 to 1000.
*February 13, 2013*

**math**

N=2^(1!)!+2^(2!)!+...+2^(1000!)!? this is the actual series..
*February 13, 2013*

**math**

What are the last three digits of the number N=2(1!)!+2(2!)!+...+2(1000!)!?
*February 13, 2013*

**maths**

threesome
*February 12, 2013*

**maths**

ABCD is a convex cyclic quadrilateral such that AB=AD and ∠BAD=90∘. E is the foot of the perpendicular from A to BC, and F is the foot of the perpendicular from A to DC. If AE+AF=16, what is the area of ABCD?
*February 12, 2013*

**maths**

ABCD is a convex cyclic quadrilateral such that AB=AD and ∠BAD=90∘. E is the foot of the perpendicular from A to BC, and F is the foot of the perpendicular from A to DC. If AE+AF=16, what is the area of ABCD?
*February 12, 2013*

**maths**

A semicircle has AB as the endpoints of its diameter, and AB=400. Points C and D are on the circumference of the semicircle such that AD=BC=100. What is the length of DC?
*February 12, 2013*

**geometry**

( 3X MINUS 5 DEGREES)55 DEGREES ( X PLUS 20 DEGREES)
*August 4, 2012*

**math**

in the given figure ABCD is the trapezium in which AD parallel to BC. angle ABC=90 degree , AD=16cm ,AC=41cm and BC=40cm. find the area of the trapezium.
*December 27, 2011*

**Math**

ANY NUMBER that has an exponent of 0 to it is equal to 1, except the number 0. PLEASE NOTE! if I have a negative number and I have an exponent of 0, then it is always equal to NEGATIVE ONE!
*October 13, 2011*

**math**

a desk is 80 cm wide.how many decimeters is that?
*September 11, 2011*

**chemistry**

plz tell
*June 12, 2011*

**chemistry**

plz tell how to calculate no. of atoms.
*June 12, 2011*

**chemistry**

calculate the molar mass of glucose and the no. of atoms of each kind in it.
*June 12, 2011*

**computer**

write the following exponent.form.into fractional form: 1) 55.67878E05 2) 67.34567-E04 3) 34.5678E05
*June 12, 2011*

**chemistry**

which of the following are isoelectronic species: Na+,K+,Mg+2,Ca+2,S2-,Ar
*June 12, 2011*

**computer**

pls tell rest of us too bcs i dont know very much about this
*June 12, 2011*

**computer**

construct function prototypes for descriptions given below: 1) Rarb() takes no arguments and has no return value. 2) Mains() takes a float argument and returns an int. 3) San() takes two double arguments and returns a double. 4) Sum() takes an int array and an int value and ...
*June 12, 2011*

**physics**

I have do a project on graphical methods representing vector quantities with 5 examples and graphs. Please let me know where will I get the required info.
*May 20, 2011*

**physics**

geographical methods representing vector quantities
*May 20, 2011*

**Managerial Accounting**

. In order to improve the accuracy of unit costs, most companies recompute the predetermined overhead rate each month. True or False
*May 13, 2011*

**Science**

Iron Particles are electroplated by chromium why?
*March 2, 2011*

**Maths **

Thanks a lot Ms. Sue - Good Night :-))
*January 4, 2011*

**Maths **

Thank You Ms. Sue for your help. If you don't mind could you please answer this given question above in a proper sentence where i could write it on my worksheet that i need to submit in school as i know what it means but can't frame a proper sentence. Please help me if...
*January 4, 2011*

**Maths **

How can knowing how to convert between minutes & hours help you? (3rd grade)
*January 4, 2011*

**french**

What is the correct from of the verb faire when the subject is Ma cousine
*November 26, 2010*

**Math**

Insert a parenthesis to make both sides of the expression equal 3*8+6^2-8/2=26
*May 9, 2009*

**math**

Thank You Dr Russ
*April 23, 2009*

**math**

x - 1 2 3 4 5 y - 9 8 7 6 5 what is the function rule for this given table
*April 23, 2009*

**IMPOSSIBLE ALGEBRA >:(**

I have a trapezoid, and the bases are lengths 18 inches and 12 inches. Dividing the trapezoid into unequal parts are triangles. In other words, the trapezoid is divided into 7 unequal triangles. 4 triangles are shaded. How do I find the area of the shaded region of the trapezoid?
*August 27, 2008*

**Maths (algebra)**

3(x+2)-2(x-1)=7
*June 25, 2008*

**science**

CAN YOU TELL ME ABOUT 3 SCIENTISTS WHO CONTRIBUTED TOWARDS BIOLOGY Here is a long list to choose from: http://en.wikipedia.org/wiki/List_of_biologists You will probably recognize some of the names. You can click on any name on that site for a brief biography.
*October 21, 2006*

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