Thursday

September 3, 2015
Total # Posts: 143

**Science**

A brick mass of 4.5 kg is thrown rertical into the air the brick leave the hand at a velocity of 10 m/s find the kinetic energy the moment it leave the hand?
*June 21, 2015*

**science chemistry**

Brandon prepares a potassium hydroxide solution (KOH) that he uses during a titration to determine the unknown concentration of a hydrochloric acid solution calculate the mass of potassium hydroxide that is need to prepare 250 cm^3 of a standard 0,125 mol.dm^-3 KOH solution.
*June 17, 2015*

**chemistry**

How can i Fill in the missing words Ionisation energy, water, melting point, electronegativity, non-polar, solvent, pair, boiling points, polar A covalent bond is formed when a 1________ of electrons is shared between the bonding atoms.when the electrons are shared equally,a ...
*June 15, 2015*

**Math**

The prime factorization for 66: Prime factorization is writing a composite number as a product of its prime factors. Sample A: The prime factorization of 504 is 2^3 x 3^2 x 7. In other words, it is a way of writing a product the long way. Sample B: The prime factorization of ...
*June 4, 2015*

**Social Studies**

What's that supposed to mean? I didn't do anything.
*June 3, 2015*

**Social Studies**

Where is the Statue of Liberty? It's in New York, you seriously didn't know that? LOL! Wow. Ha-ha.
*June 3, 2015*

**English**

It looks great! I don't think you need any changes. Is this a writing assignment you did yourself? If it is, it's very strong!
*June 3, 2015*

**phy 111**

3c, 4c, 5c, 6b, 7a, 8a, 9b, 10c, 11d, 12a, 13d, 14a, 15b, 16a, 17b, 18d, 19d
*March 30, 2015*

**Life orientation**

Can you please explain for me in a short paragraph what can trigger spectator aggression in sport
*March 19, 2015*

**math**

If you have 100 numbers (1 - 100, including 1 and 100) and you choose 2 of them then do the formula x + y + xy (x being the first number and y being the second) and you replace the 2 numbers chosen with that new number, what are the last possible values for the last number? ...
*March 10, 2015*

**American Government**

Thank you for responding! Is #1 D instead?
*November 23, 2014*

**American Government**

I need some help with some Government questions: 1. All of the following are ways that formulating our budget has changed EXCEPT: A. Budget and Accounting Act of 1921 B. transfer of Office of Management and Budget to the Executive Office of the President C. Congressional ...
*November 23, 2014*

**American Government**

Hi, I need some help with a couple government questions. 1. State governments could print their own paper money under the articles of confederation. True or False **my answer=true 2. Which of the following explains changes that happened in U.S. foreign policy after the ...
*November 23, 2014*

**The Odyssey and Orestia**

Hi. I need some help with a few questions regarding The Odyssey and Orestia. (I have eliminated some of the possible choices because I know they are incorrect) 1.How are the endings of both the Odyssey and the Orestia similar? A.In both cases, the goddess ...
*November 22, 2014*

**AP English Literature: The Odyssey**

Hello. I am in need of some help with these following questions about The Odyssey: 1. When Odysseus finally lands upon the island of the Phaiacians, what happens which leads him to come out of disguise and reveal his true identity? A. Athena vows to protect him and tells him ...
*November 21, 2014*

**Government**

I need some help with some Government questions: 1. All of the following are ways that formulating our budget has changed EXCEPT: A. Budget and Accounting Act of 1921 B. transfer of Office of Management and Budget to the Executive Office of the President C. Congressional ...
*November 20, 2014*

**US Government**

Hello, I need some help with a few Government true/false questions. The Office of Management and Budget can withhold funding for a program that the President considers ineffective. My answer=False The threat of the spread of communism around the world is still the main focus ...
*November 18, 2014*

**History**

How could the 1933 Ukraine Genocide be prevented?
*August 14, 2014*

**History**

What survival tactics were used in the 1933 Ukraine Genocide?
*August 14, 2014*

**Civilization**

What do you think about the rules of civilization? Do they free us and enable us to rise to our best selves? Or do the rules constrain our bad nature that lie at the heart of ourselves?
*August 13, 2014*

**Geography**

Thanks Ms. Sue!
*May 28, 2014*

**Geography**

What is the largest volcano in close proximity to Calgary?
*May 28, 2014*

**Science**

whats is a structure that was built with keeping costs low as the primary concern?Also, what is a structure (with the same function as the one above) that was built with no regard to cost: What are the difference between the two?
*February 25, 2014*

**science**

Also, what is a structure (with the same function as the one above) that was built with no regard to cost: What are the difference between the two?
*February 25, 2014*

**science**

whats is a structure that was built with keeping costs low as the primary concern?
*February 25, 2014*

**Math**

Sorry about the Chinese, the Chinese words are Celsius.
*February 5, 2014*

**Math**

I don't understand this question, could someone solve/walk me through this? One afternoon in Fort Simpson, Northwest Territories, the air temperature was −10ºC and the wind speed was 25 km/h. The air temperature dropped by 5ºC in the evening, but the wind ...
*February 5, 2014*

**algebra**

3X+4=-8+6X
*September 12, 2013*

**chemistry**

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the molarity of NaF in ...
*June 16, 2013*

**chemistry**

Liquid elemental iron is produced in the thermite reaction because enough heat is generated to melt the iron: 2 Al(s) + Fe2O3(s)----> Al2O3(s) + 2 Fe(l) What mass of aluminum is needed to produce 750 grams of iron?
*June 16, 2013*

**chemistry**

Liquid elemental iron is produced in the thermite reaction because enough heat is generated to melt the iron: 2 Al(s) + Fe2O3(s)----> Al2O3(s) + 2 Fe(l) What mass of aluminum is needed to produce 750 grams of iron?
*June 16, 2013*

**chemistry**

15. Liquid elemental iron is produced in the thermite reaction because enough heat is generated to melt the iron: 2 Al(s) + Fe2O3(s)----> Al2O3(s) + 2 Fe(l) What mass of aluminum is needed to produce 750 grams of iron?
*June 16, 2013*

**chemistry**

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the molarity of NaF in ...
*June 16, 2013*

**chemistry**

What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the molarity of NaF in ...
*June 16, 2013*

**math**

Find an angle between 0 & 360 degrees that is coterminal 820 degrees.
*May 29, 2013*

**Application: Two-Sample t-Tests**

Should Martha use an independent-samples t-test or a related samples t-test? Explain your answer.
*March 31, 2013*

**geography**

What does the word napasta mean in english?
*March 24, 2013*

**english grammar**

Ramesh generally drinks an orange juice
*March 12, 2013*

**business mathematics**

find the total amount due on a loan of N80,000.00 at 18percent simple interest at the end of 4months. (2)question is find the total amount due on a loan of N600,000.00 at 12percent simple interest at the end of 3years. Pls i need answer
*February 25, 2013*

**statistics**

A high school counselor wants to examine whether the teenage pregnancy rate at her school is different from the rate nationwide. She knows that the rate nationwide is 15 %. She randomly selects 80 female students from her high school. She finds that 9 out of 80 students are ...
*February 19, 2013*

**science**

Calculate the partial pressure of oxygen gas a diver breathes with a heliox mixture containing 2% oxygen at a depth of 100 metres where the total pressure is 100kPa
*January 29, 2013*

**Math 6**

Some information is missing. The engine has 1 1/4 gallons of oil in it now? And the question is how much more oil is needed to fill to capacity (full). What is the capacity of oil in the engine?
*January 27, 2013*

**math**

h<48 is not correct, since since this says the height (h) is less than 48" (ie too short).
*January 27, 2013*

**math**

In order to ride the roller coaster, you must be 48" tall, so H=48. If the question is you must be at least 48" tall, then H=> (equal to or greater than) 48" tall.
*January 27, 2013*

**math**

One possible answer is Marty's pizza was much larger than Luis' pizza.
*January 26, 2013*

**math**

One equation would be: x+y=69, correct? (add two integers to equal 69). But then we know the integers are consecutive, so the second integer (y) is one greater than the first interger (x). So the next number after x is x+1 So we can say y=x+1 Then follow the train: x+y=69 x+(x...
*January 26, 2013*

**Math**

A scale drawing of a house is drawn with a scale of 1 in. : 16 ft. Find the actual length of a hallway that is 5/8 in. On the scale drawing. Show your work
*January 3, 2013*

**cryptography**

The following file cshift.txt is encrypted using a shift cipher. Decrypt it using key exhaustion. I expect to see 26 complete lines of output. Your program does not have to pick out which shift is English. You may do that by eyeball. Then print the proper plaintext (with ...
*September 17, 2012*

**Geometry**

the measures of two complementary angles are 16z-9 and 4z+3. Find the measures of the angles.
*September 17, 2012*

**computer science**

Compare how data is handled in the NTFS EFS+, Ext3fs, and NTFS. Which one do you consider to be the most reliable file system? Why?
*September 12, 2012*

**Physics**

A sprinter explodes out of the starting block with an acceleration of +4.1 m/s2, which she sustains for 1.2 s. Then, her acceleration drops to zero for the rest of the race. (a) What is her velocity at t = 1.2 s. (b) What is her velocity at the end of the race?
*August 29, 2012*

**Physics**

Two motorcycles are traveling due east with different velocities. However, four seconds later, they have the same velocity. During this four-second interval, cycle A has an average acceleration of 1.8 m/s2 due east, while cycle B has an average acceleration of 3.8 m/s2 due ...
*August 29, 2012*

**Physics**

A car with a mass of 1500 kg moves at 26 m/s. What braking force is needed to bring the car to a halt in 10 s?
*July 25, 2012*

**Organic Chemistry**

A lower yield of phosphonium salt is obtained in refluxing benzene than in xylene. Look up the boiling points for these solvents, and explain why the difference in boiling points might influence the yield. I'm not sure how to answer this question. I see that benzene has a ...
*June 26, 2012*

**Math**

Dividing a Polynomial - need detail and answer please!!! (6x^4+4x^3-x^2)/(6+2x)
*May 17, 2012*

**Biology**

Dont know the first one Broken character i'll get over it
*May 1, 2012*

**math**

Quadrilateral ABCD is a square. The coordinates of point A are (3,2), coordinates of point B are (-3,2),and the coordinates of points C are (-3,-4). where on a coordinate plane would I mark the location of point D??
*March 29, 2012*

**math**

how do i solve 3x+2y=40,x+y=18 i would like the work shown.. thanks.
*March 22, 2012*

**Chemistry**

What would be the dangers of mixing chlorofluorocarbons (r-22 refrigerant)and chlorine gas in a indoor swimming pool area? Question is in regard to a substanial R-22 refrigerant leak that ends up in a enclosed pool area daily mixing with chlorine gas in that room.
*December 27, 2011*

**chemistry**

What would be the dangers of mixing chlorofluorocarbons (r-22 refrigerant)and chlorine gas in a indoor swimming pool area? Question is in regard to a substanial R-22 refrigerant leak that ends up in a enclosed pool area daily mixing with chlorine gas in that room.
*December 26, 2011*

**chemistry**

What would be the dangers of mixing chlorofluorocarbons (r-22 refrigerant)and chlorine gas in a indoor swimming pool area?
*December 26, 2011*

**phys**

How many kcal of heat are required to vaporize 25.0 kg of water at 100C?
*December 15, 2011*

**Math equation**

y = -1/2 x-4 Complete the table for this equation. x y (x,y) -1 -2 -4 2 8
*November 30, 2011*

**physics**

Two objects (m1 = 5.15 kg and m2 = 2.75 kg) are connected by a light string passing over a light, frictionless pulley as in the figure below. The 5.15-kg object is released from rest at a point h = 4.00 m above the table. (a) Determine the speed of each object when the two ...
*October 11, 2011*

**statistics**

construct the confidence interval for the population mean c=0.98,x=5.6, s=0.6, and n=45
*October 11, 2011*

**math**

Four darts are thrown at a dart board with four rings, each ring has a different value, If all four darts hit the board, how many different point totals are possible?
*September 26, 2011*

**english**

i need help with capilalization
*July 10, 2011*

**math**

how do i solve find x in x^+6x+9
*July 7, 2011*

**health**

Employees from the billing department are not receiving the accurate codes and information needed for data entry, slowing production and payment for the doctor. As head of the billing department, you have been delegated to lead a problem-solving team to resolve this issue. o ...
*April 29, 2011*

**Islamic Managerial Ethics**

Discuss the relevance of the five pillars of Islam to managers of organizations in the world today.
*February 18, 2011*

**math**

Could someone please how this problem should be solved? Simplify and write the answer in exponential notation using positive exponents. 2 to the 4th x 2 -2nd power
*February 6, 2011*

**math**

translate to an algebraic expression. a less than b
*January 30, 2011*

**f/math**

the common ratio of a g.p is 2.if the 5th term is greater than the first term by 45, find the 5tth term
*December 31, 2010*

**pre algebra**

A train leaves the station and travels north at 85 km/hr. For hour later, a second train leaves on a parallel track and travels north at 125km/hr. How far from the station will they meet?
*November 8, 2010*

**Math(Please check answers)**

Just like what Reiny said, just try and expand it yourself. See what you can find! :)
*September 9, 2010*

**business**

o Joint-stock company o Limited liability company o Partnership o Sole proprietorship For this assignment... Describe a business scenario, either real or fictional, that depicts each of the following forms of business organization:
*August 4, 2010*

**verb tense**

you have room inside for one student at a time.
*July 19, 2010*

**college physics**

what about the gradient and intercept at y-axis?
*June 24, 2010*

**college physics**

rearrange the equation T = 2pi(l/g)^(1/2) in the form of y=mx+c where T = dependent variable, L = independent variable, and 2pi and g = constant.
*June 24, 2010*

**Economics**

What are the weeknesses of chamberling doupoly model?
*June 23, 2010*

**STATISTICS**

1 to 6264. find the probability of selecting a number that is not divisible by 1000
*June 2, 2010*

**math**

cory drops a bouncing ball form a height of 50 ft and it rebounds to 90% of its previous height.find the total distance the ball will have travelled when it hits the ground for the fifth time
*May 12, 2010*

**Literature**

iam writting a term paper on the relationship between literature and history but i dont know what to write someone please help me out.your answers are most wlcome.thank you.
*November 26, 2009*

**algebra**

a train leaves a station and travels north at 60 km/hr. three hours later, a second train leaves on a parallel track and travels north at 100km/hr. how far from the station will they meet?
*November 11, 2009*

**college (physics thermo)**

A 1.20 mol sample of an ideal diatomic gas at a pressure of 1.20 atm and temperature 380 K undergoes a process in which its pressure increases linearly with temperature. The final temperature and pressure are 680 K and 1.83 atm. (assume 5 active degrees of freedom) b. ...
*February 2, 2009*

**bio**

3. 3
*December 21, 2008*

**college**

If preferred stock was issued at 50 dollars a share at 8% annual interest rate what would be the annual yeild?
*October 25, 2008*

**math**

A horizontal clothesline is tied between 2 poles, 12 meters apart. When a mass of 5 kilograms is tied to the middle of the clothesline, it sags a distance of 1 meters. What is the magnitude of the tension on the ends of the clothesline? A constant force moves an object along a...
*September 15, 2008*

**multivariable calc with some high school physics**

A horizontal clothesline is tied between 2 poles, 12 meters apart. When a mass of 5 kilograms is tied to the middle of the clothesline, it sags a distance of 1 meters. What is the magnitude of the tension on the ends of the clothesline? A constant force moves an object along a...
*September 15, 2008*

**Trig (inverse functions)**

I found my mistake, please disregard.
*April 21, 2008*

**Trig (inverse functions)**

Problem: tan[arccsc(-5/3) + arctan(1/4)] My work: let arccsc(-5/3)=X and let arctan(1/4)=Y where -pi/2<=X<=pi/2, X cannot be 0 and where -pi/2<Y<pi/2 so that cscX=-5/3 and tanY=1/4 The problem can now be written as tan(X+Y) =tanX + tanY/1-tanXtanY which could also ...
*April 21, 2008*

**Math**

well my spacing for -4, 0, 10 didn't come out right, but hopefully you get the idea. -4 at the beginning, 0 towards the middle, and 10 and the end.
*April 21, 2008*

**Math**

A line graph with a solid dot at -4, a solid dot at 10, and shading between the two. o--------------------o -4 0 10 where the 0 are solid or you could use a [ at -4 and a ] at 10 [----------------------] -4 0 10 I think that is how interval notation works, but I could be wrong.
*April 21, 2008*

**Inverses**

Thank you very much. The answer doesn't change, but my trig teacher wants to see all of work, and I just wasn't sure which figure to use.
*April 21, 2008*

**Inverses**

Problem: cos[arccos(-sqrt3/2)-arcsin(-1/2)] This is what I have: cos [(5pi/6)-(11pi/6)] cos (-6pi/6) or -pi giving an answer of -1 What I am wondering is should I use the (11pi/6) or should I use (-pi/6) because of the restrictions on arcsin x (-pi/2)<=x<=(pi/2) Thank ...
*April 21, 2008*

**Geomotry**

Thank you Ms Sue.
*April 15, 2008*

**Geomotry**

How do you calculate the square footage on the surface of a cylinder if you know the diameter and length?
*April 15, 2008*

**Algebra**

Because when you multiply or divide any number (a positive or a negative number) by a negative number you will automatically change the sign of the number you are performing the operation on. In an inequality you will then reverse the relationship between the numbers on each ...
*April 15, 2008*

**Trig**

whoops, sorry everyone. The original message was supposed to be a reply to another post.
*April 9, 2008*

**Trig**

Dang, I see where I messed up. Thank you so much.
*April 9, 2008*