Sunday

April 19, 2015

April 19, 2015

**Chemistry**

4. A typical car engine produces 44,000 kJ of heat in an hour. The cooling system has a capacity of 8.40 L and is filled with a 50:50 mixture of anti-freeze (specific heat capacity of 8.37 J/g-oC, density of 1.038 g/mL). In maintaining a constant engine temperature, the ...
*Saturday, April 18, 2015 at 7:28pm*

**Science**

1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
*Saturday, April 18, 2015 at 1:59pm*

**Science **

1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
*Saturday, April 18, 2015 at 11:30am*

**math help**

A tank has two pipes entering it.when operating together,they fill the tank in 40 minutes.operating independently,one of the pipes fills the tank 60 minutes faster than the other one does. Calculate the time taken by each pipe to fill the tank on its own.
*Saturday, April 18, 2015 at 11:30am*

**Science**

1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere Chromosphere*************** Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar system? Hydrogen and...
*Friday, April 17, 2015 at 11:58pm*

**troduction to computer**

you call the help desk to report a problem you are having on your computer. The technician asks you what operating system you are running . you know it is windows 7 but you forget which version. how can you find out
*Friday, April 17, 2015 at 9:22pm*

**PRE - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20 ...... I NEED HELP WITH THE OTHER TWO PLEASE :) 4 -1 3 | 12
1 4 6 | -32
5 3 9 | 20 1 0 0
...
*Friday, April 17, 2015 at 8:04pm*

**pre-calc - JAI**

Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2
*Friday, April 17, 2015 at 12:25am*

**HELP PLEASE**

Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2
*Thursday, April 16, 2015 at 9:18pm*

**Interaction of Forces**

The ball in the image below is rolling toward the block. The ball will create a disturbance in the stability of the block by knocking it over. Which of the following correctly predicts what will happen to the block? [image of ball rolling toward tall, skinny block] - Unstable ...
*Thursday, April 16, 2015 at 9:14pm*

**AP Chemistry**

How much work is done by the system when 2.00 moles of O2 expand from a volume of 3.00 liters to a volume of 5.1 liters against a constant external pressure of 0.0100 atm? Answer in units of J. I get w=-p(deltaV) but what about moles?
*Thursday, April 16, 2015 at 8:32pm*

**pre-calc**

Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2
*Thursday, April 16, 2015 at 8:23pm*

**pre-calc**

Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2
*Thursday, April 16, 2015 at 8:06pm*

**Chmistry**

pcl3(g) cl2(g) ¨ <--- pcl5(g) Energy Some PCl3 and Cl2 are mixed in a container at 200 degrees celius and the system reaches equilibrium according to the equation above. Which of the following causes and increase in the number of moles of PCl5 present at ...
*Thursday, April 16, 2015 at 8:06pm*

**pre-calc**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. x+4y+6z =-32 5x+3y+9z = 20
*Thursday, April 16, 2015 at 7:41pm*

**Science **

1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed Amplitude and wavelength Amplitude and frequency 2. Sound proof rooms...
*Thursday, April 16, 2015 at 6:32pm*

**pre-calc **

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
*Thursday, April 16, 2015 at 5:16pm*

**Physics**

A 1100- kg car collides with a 1400- kg car that was initially at rest at the origin of an x-y coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 25 o with respect to the positive x axis. The heavier car moves at 23 km/h at -50 o with ...
*Thursday, April 16, 2015 at 4:35pm*

**math**

given the equation -3x +2y =4, Write another equation that will form a linear system with: one solution, no solution and infinite solution. infinite solution: (-3x +2y =) * 3 -> -9x +6y =12 y=3/2x+4 -9x +6y =12 I think we have to multiple the first equation by non-zero ...
*Thursday, April 16, 2015 at 2:27pm*

**Science**

Problem How could renewable energy sources be used in a house? Devise a Plan 1. Consider what you learned about renewable energy sources. Use what you learned to design a house that operates entirely on renewable energy sources. Focus on three major needs: (1) heating and ...
*Thursday, April 16, 2015 at 1:43pm*

**science**

What do bone marrow (the soft connective tissue that fills the internal spaces in bone) and the dermis (layer of the skin under the epidermis and over the hypodermis) have in common? (1 point) • They are both sites of new cell formation. • They both contain or are ...
*Thursday, April 16, 2015 at 1:18pm*

**Science **

1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed***** Amplitude and wavelength Amplitude and frequency 2. Sound proof ...
*Thursday, April 16, 2015 at 1:10pm*

**pre - CALCULUS**

Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2
*Wednesday, April 15, 2015 at 11:52pm*

**pre - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
*Wednesday, April 15, 2015 at 11:49pm*

**math -check**

given the equation -3x +2y =4, Write another equation that will form a linear system with: one solution, no solution and infinite solution. Graph the linear using graphing calculator and write your window setting in the format x: Xmin, xmax, Xscl. Y: Ymin, Ymax, Yscl Please ...
*Wednesday, April 15, 2015 at 11:24pm*

**physics**

A 15-kg block is on a frictionless ramp that is inclined at 20° above the horizontal. It is connected by a very light string over an ideal pulley at the top edge of the ramp to a hanging 19-kg block, as shown in the figure. The string pulls on the 15-kg block parallel to ...
*Wednesday, April 15, 2015 at 10:56pm*

**pre - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
*Wednesday, April 15, 2015 at 10:48pm*

**POL201 American National Government**

Question 1.1. Despite the greater federal authority in the federal relationship, federalism is still important for all the following reasons except that (Points : 1) it provides the best means of developing a vast country because it allows for experimentation. it may ...
*Wednesday, April 15, 2015 at 7:29pm*

**pre - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
*Wednesday, April 15, 2015 at 7:18pm*

**Science**

1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed***** Amplitude and wavelength Amplitude and frequency 2. Sound proof ...
*Wednesday, April 15, 2015 at 11:14am*

**science **

1. What do bone marrow and the epidermis have in common? They are both sites of new cell formation. They both contain structures that assist the body in cooling down if overheating occurs. They both contain or are associated with sensory neurons. They are both involved in ...
*Wednesday, April 15, 2015 at 10:43am*

**math**

Given the equation - 3x +2y =4. Write another linear equation that will form a linear system with exactly one solution? I usually try to answer b4 i ask question But this time i'm really stuck. plz help ?
*Wednesday, April 15, 2015 at 1:56am*

** Writing Skills, **

1. Which one of the following comes first in an online catalog entry? A. Title of the book B. Year of publication C. Call number of the book D. Author's last name 2. You've located three books on a topic you're researching for an essay. The first thing you should ...
*Tuesday, April 14, 2015 at 10:05pm*

**law**

what are some examples of successful or unsuccessful criminal justice system services
*Tuesday, April 14, 2015 at 6:59pm*

**Science**

1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed***** Amplitude and wavelength Amplitude and frequency 2. Sound proof ...
*Tuesday, April 14, 2015 at 11:43am*

**pre - CALCULUS**

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0
*Monday, April 13, 2015 at 8:51pm*

**Pre - CALCULUS**

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0
*Monday, April 13, 2015 at 7:14pm*

**PHY 113**

1 The principle of conservation of heat energy states that that when an object is at constant temperature or is in thermal equilibrium, it is losing and gaining heat at equal rates. the heat lost by a hot body is equal to the heat gained by the cold body in any system provided...
*Monday, April 13, 2015 at 3:52pm*

**Science **

Which sphere of the Earth system contains nearly all of Earth's mass? A. the geosphere B. the atmosphere C. the biosphere D. the hydrosphere
*Monday, April 13, 2015 at 1:43pm*

**physics**

A block of mass M1 = 15 kg is lying on a horizontal friction-less surface is connected to a string passing over a friction-less pulley. A mass of M2 = 25 kg is hanging at its other end as shown in the figure below. (i) Find the acceleration in the masses. (ii) What is the ...
*Monday, April 13, 2015 at 7:35am*

**Physics**

You have 250 g of water in an aluminium calorimeter with a mass of 125 g. How long will it take to increase the temperature of the water and calorimeter from 20C to 37C if the system is heated by a resistive heating element with 8 V across the resistor and 0.75 A flowing ...
*Sunday, April 12, 2015 at 11:06pm*

**MATH**

5x-4y= -3 2x + 7y= 5 How to solve this linear system shown above by using elimination strategy ? (5x-4y= -3) *2 ->10x - 12y= 6 (2x + 7y= 5) *5 -> 10 +35y= 25 ___________________________________________ -47y = -19 y = -19/47 10x - 12y= 6 10x - 12(0.4) = 6 10x -4.8=...
*Sunday, April 12, 2015 at 9:59pm*

**physics**

1 The principle of conservation of heat energy states that that when an object is at constant temperature or is in thermal equilibrium, it is losing and gaining heat at equal rates. the heat lost by a hot body is equal to the heat gained by the cold body in any system provided...
*Sunday, April 12, 2015 at 3:53pm*

**Physics**

A uniform, 274-N rod that is 2.05m long carries a 225-N weight at its right end and an unknown weight W toward the left end.When W is placed 50.3cm from the left end of the rod, the system just balances horizontally when the fulcrum is located 78.0cm from the right end. i ...
*Sunday, April 12, 2015 at 12:50am*

**pre - CALCULUS**

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. x + y + z = 9 2x - 3y + 4z = 7 x - 4y + 3z = -2 A. {(-7z/5+34/5 ,2z/5 +11/5 , z)} b. {(- 7z/5+34/5 , 2z/5- 11/5 , z)} c . {( z/5+ 34/5 , 2z/5+11/5 , z)} C?
*Saturday, April 11, 2015 at 8:45pm*

**Pre - CALCULUS**

Use Cramer's rule to solve the system. 2x + 4y - z = 32 x - 2y + 2z = -5 5x + y + z = 20 A. {( 1, -9, -6)} B. {( 2, 7, 6)} C. {( 9, 6, 9)} D. {( 1, 9, 6)} d ?
*Saturday, April 11, 2015 at 8:27pm*

**pre - CALCULUS**

Use Cramer's rule to determine if the system is inconsistent system or contains dependent equations. 2x + y = 8 6x + 3y = 24 A. system is inconsistent B. system contains dependent equations b ?
*Saturday, April 11, 2015 at 7:19pm*

**pre - CALCULUS**

Solve the system by the method of your choice. Identify systems with no solution and systems with infinitely many solutions, using set notation to express their solution sets. x + y = -8 x - y = 14 A. {( 3, -11)} B. {( 3, 11)} C. {(x, y) | x + y = -8} D. ∅ B?
*Saturday, April 11, 2015 at 5:40pm*

**business mgmt**

A company looking for venture capitalist funding is deciding on the design of its operating system for its new phone. The first option is to simply buy the OS from another company. This would result in sales of either 10,000 units if the market is not crowded with similar ...
*Saturday, April 11, 2015 at 3:08pm*

**math**

How to use an elimination strategy to solve the linear system: 5/3x +1/4y = 10 1/3x + 1/2y = 5
*Friday, April 10, 2015 at 11:13pm*

**math - plz help!!**

How to write three linear system that are equivalent to the linear system shown? 5x-4y= -3 2x + 7y= 5
*Friday, April 10, 2015 at 4:21pm*

**science ms sue plz help**

1. Which layer of the sun's atmosphere are you looking at when you look at an image of a sun? A) Photosphere B) Chromosphere C) Corona D) Prominence 2. What materials could have been found in a giant cloud that formed the solar system? A- hydrogen and helium B- hydrogen ...
*Friday, April 10, 2015 at 2:05pm*

**math/physics**

A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine amp, frequency and steady ...
*Friday, April 10, 2015 at 12:53pm*

**math - hw help. plz**

How to I solve this linear system using method of substitution? 1/4x + 1/2y = -5/12 2x - y = -4/3
*Friday, April 10, 2015 at 1:21am*

**sdsu**

BurrAnd Company estimates that annual manufacturing overhead costs will be $600,000. Estimated annual operating activity bases are: direct labor cost $500,000, direct labor hours 50,000, and machine hours 100,000. Compute the predetermined overhead rate for each activity base...
*Thursday, April 9, 2015 at 7:04pm*

**Math Check**

Hi! I need help with this one problem. My teacher told me that I could use any method to solve the following system and this is the answer I got; (1/2,2/5). Is this correct? 0.15r + 0.85s = 0.23 0.20r + 1.25s = 0.33 Write answer in (r, s).
*Thursday, April 9, 2015 at 4:54pm*

**math**

How to write three linear system that are equivalent to the linear system shown? 5x-4y= -3 2x + 7y= 5
*Thursday, April 9, 2015 at 3:29pm*

**math**

What is the value of x in the system shown? y=1/5x+2 y=x-4
*Thursday, April 9, 2015 at 1:25am*

**math**

What is the value of y in the system shown? y=12x-3 y=-2x+4 Thanks
*Thursday, April 9, 2015 at 12:37am*

**Math**

Solve this system that is represented by the following matrix. [1 -2 -2| -3 0 5 3| 13 0 0 1| 1] Write answer in (x, y, z)
*Wednesday, April 8, 2015 at 10:35pm*

**Science**

18. The human immune system produces ______________ in response to a vaccine, which later can bind to and destroy a pathogen if it invades. (1 point)
*Wednesday, April 8, 2015 at 9:35pm*

**math**

write a system of equations that is not linear and graph. can this work equation work? 3x+2y=12 3x+2y=6 1. 3x+2y=12 y=-3/2x + 6 2. 3x+2y=6 y = =3x/2+3 when i graph it will be parallel.
*Wednesday, April 8, 2015 at 5:11pm*

**plz help science**

1. Which layer of the sun's atmosphere are you looking at when you look at an image of a sun? A) Photosphere B) Chromosphere C) Corona D) Prominence 2. What materials could have been found in a giant cloud that formed the solar system? A- hydrogen and helium B- hydrogen ...
*Wednesday, April 8, 2015 at 11:24am*

**Science **

1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed***** Amplitude and wavelength Amplitude and frequency 2. Sound proof ...
*Wednesday, April 8, 2015 at 11:01am*

**Chemistry**

A coffee cup calorimeter contains 100.0 g of water at 10.0 ◦C. A 72.4 g sample of iron is heated to 100 ◦C and dropped into the calorimeter. Assuming there is no heat lost to the coffee cup, calculate the final temperature of the system. The specific heats of iron ...
*Tuesday, April 7, 2015 at 10:22pm*

**social studies**

1) Diversity most closely means (1 point) a. sharing cultural traits and practices with others. ** b. making up a whole of many different parts. c. being a member of a small ethnic group. d. having many similar regions next to one another. 2) How does life in Istanbul differ ...
*Tuesday, April 7, 2015 at 8:47pm*

**sience plz hep**

1. Which layer of the sun's atmosphere are you looking at when you look at an image of a sun? A) Photosphere B) Chromosphere C) Corona D) Prominence 2. What materials could have been found in a giant cloud that formed the solar system? A- hydrogen and helium B- hydrogen ...
*Tuesday, April 7, 2015 at 6:05pm*

**criminal justice**

could someone please let me know where I can find this type of question to read. discuss three key aspects of the school shootings that the court system has addressed so far. Thank you very much Mary Ann
*Tuesday, April 7, 2015 at 5:29pm*

**physics**

A 13.1-g bullet is fired into a block of wood at 261 m/s. The block is attached to a spring that has a spring constant of 205 N/m. The block and bullet continue to move, compressing the spring by 35.0 cm before the whole system momentarily comes to a stop. Assuming that the ...
*Tuesday, April 7, 2015 at 4:47pm*

**math help**

A tank has two pipes entering it.when operating together,they fill the tank in 40 minutes.operating independently,one of the pipes fills the tank 60 minutes faster than the other one does. calculate the time taken by each pipe to fill the tank on its own.
*Tuesday, April 7, 2015 at 1:51pm*

**Science**

1. What do bone marrow (the soft connective tissue that fills the internal spaces in bone) and the dermis (layer of the skin under the epidermis and over the hypodermis) have in common? (1 point) • They are both sites of new cell formation. • They both contain or are...
*Tuesday, April 7, 2015 at 9:09am*

**math**

If it says use the method of substitution to solve the system of linear equations 3a=6-b 3a=4-b How do i find the solution
*Tuesday, April 7, 2015 at 3:48am*

**math**

In a car repair shop there are 50 cars to be repaired . It is estimated that 23 of that cars need new brakes , and 34 of that cars need to repair the exhaust system . a. How many cars are in need of repair at least two? b . What most cars that are not in need of repair both?
*Tuesday, April 7, 2015 at 1:17am*

**American History**

The reason that the President is called the Commander-in-Chief in the Constitution is because the Framers wanted ***to provide the President with authority over the secretary of defense. Question 2. Question : Thomas Jefferson justified the Louisiana Purchase on the grounds ...
*Monday, April 6, 2015 at 7:50am*

**Writing Skills, Part 3**

6. You have found an article in the Readers' Guide that you want to locate. What information would be least important in finding it? A. Subject heading B. Volume and page numbers C. Author's name D. Title of the article Student Answer: B Answer: Incorrect Reference: 7...
*Sunday, April 5, 2015 at 7:33pm*

**phy111**

1 The principle of conservation of heat energy states that that when an object is at constant temperature or is in thermal equilibrium, it is losing and gaining heat at equal rates. the heat lost by a hot body is equal to the heat gained by the cold body in any system provided...
*Sunday, April 5, 2015 at 8:00am*

**chemistry**

A 100 w lightbulb is place in a cylinder equipped with a moveable piston. The ligshtbulb is turned on for 0.015 hours, and the assembly expands from initial volume of 0.85 L to a final volume of 5.88 L against an external pressure of 1.0 atm. Use the wattage of the lightbulb ...
*Saturday, April 4, 2015 at 4:55pm*

**Law**

Describe the role of the court in Australia's legal system.
*Saturday, April 4, 2015 at 5:13am*

**child development **

i have answered the questions but i want to be sure before submit them 1. In a study examining preschoolers’ responses to their peers’ distress, researchers used _______ to record each instance in which a child cried, followed by other children’s reactions. &#...
*Friday, April 3, 2015 at 10:19pm*

**Math - Help Me Please**

Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25% per month, find: a) The cost of the stereo. b) The total amount of interest paid. I am having trouble figuring out the correct layout.
*Friday, April 3, 2015 at 7:00pm*

**math- please help me**

Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25% per month, find: a) The cost of the stereo. b) The total amount of interest paid. I am having trouble figuring out the correct layout.
*Friday, April 3, 2015 at 3:35pm*

**math**

how do you write a system of equation that is linear ? can this two equation work? 2x – 3y = –2 4x + y = 24
*Friday, April 3, 2015 at 2:48pm*

**Math - Help Please**

Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25% per month, find: a) The cost of the stereo. b) The total amount of interest paid. I am having trouble figuring out the correct layout.
*Friday, April 3, 2015 at 12:23pm*

**Algebra**

Need help solving the system of inequalities and equations graphically for this problem. Please help! 6y=9(x-6) 3(2y+5x)=-6
*Friday, April 3, 2015 at 10:45am*

**math**

Question:write a system of equation that is linear. can this two equation work? 2x – 3y = –2 4x + y = 24
*Thursday, April 2, 2015 at 2:39pm*

**Math - hw check**

The admission fee for student is $8 and the admission fee for Adult is $15. In one hour, 12 adults and students enter the museum and a Total of $131 in admission was paid. Write a linear system to model this problem and solve this problem graphically. Check you answer by ...
*Thursday, April 2, 2015 at 12:51am*

**physics**

A hydraulic cylinder has to overcome a force of 12,600 pounds on the extend stroke and 9,375 pounds on the return stroke. The maximum system pressure available is 2200 PSIG. What is the smallest diameter cylinder required to overcome the load and what is the maximum diameter ...
*Wednesday, April 1, 2015 at 7:26pm*

**fluids**

What are the three benefits of a fluid system as the prime mover in a system? Explain each benefit.
*Wednesday, April 1, 2015 at 7:07pm*

**Physics- Solenoid Questions**

1) A technician has been given wire that can safely carry 5 A. She has been instructed to construct a solenoid that will have a magnetic field of 0.06 T at its center. After completing some tests of the wire, the technician finds that the tightest safe winding possible with ...
*Wednesday, April 1, 2015 at 4:05pm*

**Science **

1. A weatherman reports, "the storm waves are about 2 meters high and about 35 meters apart. "what properties of waves is the reporter describing? Frequency and wavelength Wavelength and wave speed***** Amplitude and wavelength Amplitude and frequency 2. Sound proof ...
*Wednesday, April 1, 2015 at 12:27pm*

**MATH**

I'm sure what if this is the right answer that the question is looking for. since my eng. not that good i have hard time understanding. Please help me. Question: write a situation that can be modeled by the following linear system. Explain what each variable means, then ...
*Tuesday, March 31, 2015 at 7:59pm*

**Chemistry DrBob please answer**

A reaction at 3.24 atm consumes 5.10 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in kJ). I know that I have to use w=-p deltaV but how do i find the Final and Initial volumes?
*Tuesday, March 31, 2015 at 7:35pm*

**ss**

what was the main goal of suffrage leaders such as elizabeth cady stanton, susan b. anthony, and anita pollitzer? a. create a national temperance movement b. improve the prison system c. get women the right to vote d. ensure equal pay for equal work i am 99.9% sure its a ...
*Tuesday, March 31, 2015 at 7:04pm*

**Chemistry**

A reaction at 3.24 atm consumes 5.10 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in kJ). I know that I have to use w=-p deltaV but how do i find the Final and Initial volumes?
*Tuesday, March 31, 2015 at 7:00pm*

**math - linear equation**

How do I write a system of equations that is linear and graph? Thanks
*Tuesday, March 31, 2015 at 6:19pm*

**calculus**

The operating cost, C, in dollars per hour, for an airplane cruising at a height of h metres and an air speed of 200km/h is given by: C = 4000 + h/15 + 15000000/h for the domain 1000 ≤ h ≤ 20000. Determine the height at which the operating cost is at a minimum, and...
*Tuesday, March 31, 2015 at 5:42pm*

**Chemistry**

A reaction at 3.24 atm consumes 5.10 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in kJ).
*Tuesday, March 31, 2015 at 5:23pm*

**Chemistry**

A reaction at 2.43 atm produces 20.0 L of a gas and evolves 75.3 kJ of heat (exothermic). Calculate the change in internal energy of the system (in kJ).
*Tuesday, March 31, 2015 at 5:23pm*

**health**

which body system would you expect to provide the most protection from colds and the flu PLEASE HELP ME!!!!!!!!!!
*Tuesday, March 31, 2015 at 11:02am*

**SOCIAL STDIES HELP!!!!!**

1. What was the New South philosophy? (1 point) a philosophy that the southern economy should become more industrialized the idea that African Americans should own more businesses*** the notion that traditional farming techniques should be maintained a concept that allowed ...
*Monday, March 30, 2015 at 8:05pm*