Saturday

February 28, 2015

February 28, 2015

Total # Posts: 30

**statistics**

In how many ways can 24 identical white ball and 19 black ball be arranged in rows so that no black balls are together.
*June 3, 2014*

**statistics**

In a class of 100 ,84% of the students have taken politics &16% of student have taken history.how many students have taken both subject of all the students take at least one of these subjects?
*June 3, 2014*

**math**

find the next term in the sequence 6,11,21,36,56,81
*March 26, 2014*

**Socials**

Temperature decreases approximately 1degree Celsius for each 150 metres increase in altitude. 1. The temp at sea level is 25 degree Celsius A.) what will the temp be 1200m up the mountain? B.) what will it be at the top? (2250m) 2. The temp at the top of the mountain is ...
*February 17, 2014*

**Can someone please answer my question **

Please answer my previous post I really need help!!!
*February 16, 2014*

**Science**

I think the last question means if we test hydrogen in a tube, y is there no water in it? I don't know wut the question means either and thank u for ur help:)
*February 16, 2014*

**Science**

Can an element be separated from a compound? Can an element form a compound? The reaction of zinc metal and hydrochloric acid creates hydrogen gas, an element. if we create this element in a tube what property of this element requires us to keep the tube upside down? Water has...
*February 16, 2014*

**Science**

Associate each item in the table with at least one field of science and one area of technology/engineering. Choose from the terms given at the bottom. Automobile aspirin shirt computer pesticide satellite robot atomic bomb vaccination can of soup polyester wrapper skyscraper ...
*February 11, 2014*

**Socials**

I've tried looking for the other ones on my atlas but I'm stuck, I've finished all my other questions but these are the ones I'm stuck on
*February 10, 2014*

**Socials **

How far is it in kilometers from kamloops BC to Edmonton Alberta? How far is it in kilometers from Singapore to Kuala Lumpur? How far is it in kilometers from Singapore to Medan? What is located at 105 east and 3 south?
*February 10, 2014*

**physics I'M STUCK PZL HELP**

"ln" is like log..it is in your calculator
*December 8, 2013*

**physics I'M STUCK PZL HELP**

Thank you very much Teresa. I got green check. Now time for rular one..
*December 8, 2013*

**physics I'M STUCK PZL HELP**

Hi Teresa, in my problem, question says The rocket burns 10 % of its mass in 290 s (assume the burn rate is constant). What is the speed of the rocket after a burn time of 145.0 s? How did you find 4.5% is burned in 155 sec? Pls. Thank you very much
*December 8, 2013*

**physics I'M STUCK PZL HELP**

Hi Teresa, can you do rocket problem me pls?
*December 8, 2013*

**physics Classical Mechanics**

Hi Greco, can you do rocket problem pls?
*December 8, 2013*

**physics Classical Mechanics**

you mean 10/9? I already used this and got wrong. Can you do in the way how you did? I mean can you show here please?
*December 8, 2013*

**physics Classical Mechanics**

Hi Anonymous, I know the formula for propulsion, but I don't know how to find m_1/m_f in 145sec. It is given that 10% of mass in 290sec. can you tell how to find?
*December 8, 2013*

**physics Classical Mechanics**

Hi hil, I did missile problem and I am seeing you are typing correct formula. Just remember to convert r_1 in meter( I think you did) and do calculate in your own calculater, not in edx one. Because sometimes I get wrong when I did in edx one calculator. may be we type ...
*December 8, 2013*

**physics Classical Mechanics**

Hi Hil, can you help me in rocket problem please? I used correct formula but I don't know how to find m_0/m? It is given 10% of mass in 290s and asking v in 145 s?
*December 8, 2013*

**PHYSICS(HELP!!)**

Hi, did you solve rocket problem. I gopt it wrong. How to find? Can you help please?
*December 8, 2013*

**PHYSICS IMP PLS**

Hi billy, It is given that 10% of mass in 290 sec and asking in 145s. I used m_0/m= 10/9 which is in 290sec I guess. and I got wrong ans. I have only one submission left. I don't know how to find m_0/m in 145sec. Please can you do it pls?
*December 8, 2013*

**PHYSICS IMP PLS**

time is not related for first part? in velocity formula there is no time, so we should not worry about 290s and 145s for first part? Thanks
*December 8, 2013*

**PHYSICS IMP PLS**

Consider a rocket in space that ejects burned fuel at a speed of v_ex= 2.0 km/s with respect to the rocket. The rocket burns 10 % of its mass in 290 s (assume the burn rate is constant). (a) What is the speed of the rocket after a burn time of 145.0 s? (suppose that the rocket...
*December 8, 2013*

**Classical Mechanics Physics - Urgent help please**

Hi Damon how did you find x=distance out from cg=0.05sinT? I have different numbers in my problem and I did not understand how to find x. Thanks
*December 7, 2013*

**English Rewites**

Most of you know the condition as a stroke. Begin:Having Spent
*March 11, 2013*

**math**

What is the algebraic rule for x = 1, 2, 3, 4, ... and y = 3, 9, 18, 30, ...
*September 1, 2011*

**accounting**

You can access answer athomeworkanswer blog. you can search any of your questions at the site and may get the answer.
*December 13, 2009*

**Science/Math**

166 years
*February 27, 2009*

**spelling**

form a sentence with the 2 conjunction words she's and cann't
*December 16, 2008*

**chemistry**

Assume you are in a lab with a test tube of sulfuric acid. You drop a piece of calcium into the tube. What do you observe happening in the tube? thank you
*January 24, 2008*

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