# Posts by RS

Total # Posts: 25

**Math**

Mitosis is a process of cell reproduction in which one cell divides into two identical cells. A bacterium called E. coli often causes serious food poisoning. It can reproduce itself in 15 minutes. a) Starting with one bacterium, make a table with time in 1/4 -h blocks and the ...

*April 28, 2015*

**Quantum Physics**

YES IT WORKED, THANK YOU GUYS THETA= 2Bt and phi= 3pi/2

*October 12, 2013*

**Quantum Physics**

@ss01, is theta= 2*B*t or -2*B*t?

*October 12, 2013*

**Quantum Physics**

for 8d i tried with this but got wrong theta=2*B*t phi= 0 or pi/2 or pi

*October 12, 2013*

**Quantum Physics**

Thanks, I am working on 7 and 8. I have already posted for 8a). will post the rest as soon as it is done

*October 12, 2013*

**Quantum Physics**

hi, what about 1)d) it has two parts? which one is z and what is the other one?

*October 12, 2013*

**Quantum Physics**

8a) theta=pi/3 and phi=0. this is 100% right. thanks guys

*October 12, 2013*

**MATHS**

Find the value of 1/10+1/100+1/1000+1/10000+... Leave your answer as a fraction

*May 3, 2013*

**MATHS**

Charis and shermin are given money each. If Charis and shermin spend $60 and $30 each day respectively. Charis will still have $600 when Shermin has spent all her money. If Charis and Shermin spend $30 and $60 each day respectively. Charis will still have $1500 when Shermin ...

*May 2, 2013*

**MATHS**

Mrs.Koh purchased new books for the school library, of which 6 were Mathematics books, 7 were Science books, 10 were Music books, 3 were Art books, and 4 were social studies books. All of these books were different. She picked a book from each subject to display in a row on a ...

*April 30, 2013*

**MATHS**

Class A and Class B have the same number of pupils. The ratio of the number of boys in Class A to the number of boys in class B is 3:2. The ratio of the number of girls in Class A to the number in Class B is 3:5. Find the ratio of the number of boys to the number of girls in ...

*April 5, 2013*

**Chem**

Polar or non polar covalent bonds C-H N-H C-C

*March 12, 2013*

**Maths**

THANKS FOR U R HELP

*February 1, 2013*

**Maths**

Stephanie had 24 more stickers than Jolene. Stephanie gave half of her stickers to Jolene. Jolene in return gave half of what she had to Stephanie. In the end, Stephanie had 40 more stickers than Jolene. How many stickers did Stephanie have in the end?

*February 1, 2013*

**Maths**

Edward has $40 more thanFariq. If Edward gives 1/5 of his money to Fariq. Fariq will have7/8 as much money as Edward. How much money do they have altogether.

*September 2, 2012*

**maths**

Edward has $40 more thanFariq. If Edward gives 1/5 of his money to Fariq. Fariq will have7/8 as much money as Edward. How much money do they have altogether.

*September 1, 2012*

**maths**

Edward has $40 more thanFariq. If Edward gives 1/5 of his money to Fariq. Fariq will have7/8 as much money as Edward. How much money do they have altogether.

*September 1, 2012*

**maths**

1).Last year, a shopkeeper sold an average of 7 cartons of apples from january to april. He sold an average of 9 cartons of apples from june till end of the year. What is the total number of cartons he sold in the 11 months? if each carton contains 66 apples,what is the ...

*May 19, 2012*

**Chemistry**

in a blast furnace, iron(III) oxide is used to produce iron by the following (unbalanced) reaction: Fe2O3 + CO = Fe + CO2 a. if 4 kg Fe2O3 are available to react, how many moles of CO are needed?

*May 18, 2012*

**maths**

complete the patterns: find the 50 th term and n th term a)3,6,11,---,27,---,51,---,.. b)0,3,8,---,---,35,---,63,.. c)1,8,27,---,---,216,---,512,..

*April 24, 2012*

**maths**

Continue these decimal patterns 0,0.5,0.6,0.75,0.8,0.83,----,---,---

*April 21, 2012*

**maths**

Continue these decimal patterns a) 1,0.5,0.3,0.25,0.2,--- ,----,-----. b) 0,0.5,0.6,0.75,0.8,0.83,----,---,---

*April 20, 2012*

**MATHS**

thanks

*April 18, 2012*

**MATHS**

The entrance fees to the Science centre is as follows: Adult :$ 10 Child :$7 A group package of 1 adult and 2 children can be bought at a discounted price of $21. One day, 234 adults and 456 children visited the Science Centre. What is the minimum amount of entrance fees that ...

*April 18, 2012*

**math**

y=16+x, for x

*November 6, 2009*

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