Sunday

January 22, 2017
Total # Posts: 920

**SCIENCE!!! help plz.... :-]**

What is litum paper made of? If you cant find anything can you try to find some websites for me? THANKS A LOT!! 8-] litmus paper traditionally is a good grade (cotton) paper, with an extract of vegetable dye from the Litmus plant. http://www.botanical.com/botanical/mgmh/l/...

*February 5, 2007*

**Chem**

What is the formula for an oxide of fluorine? F2O2 also written as O2F2

*December 7, 2006*

**physics**

A 640 N student stands on a bathroom scale in an elebator. As the elevator starts moving, the scale reads 800 N. a) find the acceleration of the elevator (magnitude and direction) b) acceleration if the scale reads 450N? c) If the scale reads 0 should the student worry? ...

*November 16, 2006*

**physics**

A light rope is attached to a block with a mass of 6 kg that rests on a horizontal, frictionless surface. THe horizontal rope passes over a frictionless, massless pulley, and a block of mass m is suspended from the other end. When the blocks are released, the tension in the ...

*November 16, 2006*

**Music**

Do orchestral musician learn each work just before it is performed and have only a little amount of time to practice? I believe that this is not true. Is this right? Not true.

*November 7, 2006*

**math**

the 2-digit # that is divisible by both the sum and the product of its digits. i got 24 and 30, but would 30 count? in other words, is it ok that 30 is divisible by 0, the product of its digits? 30 isn't divisible by zero. Any number divided by zero is indeterminate so we ...

*October 25, 2006*

**math**

one of four #s where n! has n digits.

*October 25, 2006*

**math**

the largest integer that is not the sum of 2 or more different primes.

*October 25, 2006*

**math**

a # that is neither prime nor the sum of two distinct primes. are you doing that month of math thing?

*October 25, 2006*

**math**

one of two numbers that can be both the area and perimeter of a triangle whose side lengths are a Pythagorean triple.

*October 25, 2006*

**math**

the number of furlongs in a league. apparantly there are 8 furlongs in a mile, i learned this just today on my ride home form school. I hope this helps. go to www.google.com and type in 1 furlong to league and hit search. The answer will pop up at you. thanks again for your ...

*October 25, 2006*

**math**

the smallest non-palidronic number whose square is a palindrome.

*October 25, 2006*

**math**

the maximum number of pieces into which a pizza can be cut by making 6 cuts. Answer is from 1-31. The formula calculating the maximum pieces cut from a circle is: c*(c+1)/2 + 1, where c is the number of cuts. See math,hws,edu/~mitchell/Math135F05/Day18,pdf dots instead of ...

*October 25, 2006*

**math**

the smallest number of people in a room where the probability of two of them having the same birthday is at least 50 percent. Answer is between 1 and 31. This is a classic problem given in probability classes. There are plenty of sites which will give and explain the answer, ...

*October 25, 2006*

**math**

the radius of a circle when the numeric values of the circumference and area are equal. circumference = 2*pi*r area = pi*r^2 Set them equal and solve for r. thanks! i understand it now! 2*3.14*r=3.14*r^2 6.28*r=3.14*r^2 r=3.14 Is that right? It doesn't seem to be. 2*3.14*r...

*October 25, 2006*

**Chemisrty**

Yes. An elements number of neutrons and electrons can change, but its number of protons will not vary. Therefore, the atoms of the same element do have the same number of protons.

*October 23, 2006*

**English**

Which wife is more virtuous to her husband Desdemona or Emilia in the play Othello? Please use examples from the play to describe each womans interaction with her husband and each woman's reaction to her husband. I think you will be able to find the answer at either of ...

*October 21, 2006*

**sciecne**

An airplane is being floen at 1500km/h at 100m above level ground. The ground began to rise up at 10 degrees. How much time does the pilot have to madke correction such that the plane doesn't hit the ground? the part where the ground is rised to 10 degrees confuses me. You...

*September 19, 2006*

**Science**

A particle has a velocity of 18m/s at a certain time and 2.4s later is velocity is 30m/s in the opposite direction. What are the magnitude and direction of the particle's acceleration during the 2.4s interval? I udes a=change in velocity /change in time and I got -20m/s^2 ...

*September 19, 2006*

**Stoichiometry problem**

I can't figure out what to do after this problem : what mass of SO2 is produced from the reaction between 31.5 g of S8 and 8.65g of O2? I have figured out the balanced equation but do I pick one of the givens and solve it straight out?

*September 9, 2006*