Wednesday

May 27, 2015

May 27, 2015

**chemistry 116**

The thermite reaction demonstrated in class requires high temperatures to start the reaction. A simple open flame is not enough to start the reaction. Once the reaction is going, then it generates enough heat to keep the reaction going. According to the literature on thermite...
*Wednesday, January 28, 2015 at 1:05pm*

**physics**

a spring balance is tied to a massless inextenxible string a small object of mass 60kg is attached to the hook of the spring balance. this system is now whirled about a vertical axis so that object performs ucm with centripetal acceleration/21m/s^2.thespring balance will now ...
*Wednesday, January 28, 2015 at 7:46am*

**Chemistry **

Suppose NaOH is added to the following system when it is at equilibrium. NH3 (aq) + H2O (l) = NH4 (aq) + OH (aq) a) in which direction will the reaction shift after the NaOH is added? b) will this stress increase or decrease the value of the reaction quotient, Q?
*Tuesday, January 27, 2015 at 10:43pm*

**Math**

Jamie is saving money to buy a new video system. So far, he has saved $16, which is 15% of the total cost of the system. What is the total cost of the system?
*Tuesday, January 27, 2015 at 3:57pm*

**achieving excellence**

Part 1 of 1 - 5.0 Points Our learning style refers to: A. how much we know. B. how we best understand information. C. how fast we read and write. D. what we are learning. Reset Selection Mark for Review What's This? 5.0 Points Being ...
*Tuesday, January 27, 2015 at 1:06pm*

**chemistry 116**

A 36.0 g piece of copper at 130.0 C is placed in 50.0 g of water at 20.0 C. What is the temperature (in C) of the water once the system reaches equilibrium? The molar heat capacity of copper is 24.5 J/(mol·K). The specific heat capacity of water is 4.18 J/(g·K...
*Tuesday, January 27, 2015 at 11:24am*

**Science**

#1 Which of the following allows a plant's vascular system to work as a transport system? A A plant's vascular system is made up of specialized cells that move around the plant as it grows. B A plants vascular system is made up of specialized cells that are covered in ...
*Tuesday, January 27, 2015 at 9:46am*

**math**

Here's my question: Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18 Here's my work on the question: a) x=(-b plus/minus sign (square root b^2-4ac)/(2a) x=(--2 plus/minus ...
*Monday, January 26, 2015 at 5:17pm*

**Science**

Check My Answers, please? Which of the following planets is considered a rocky, or terrestrial, planet? Venus **** Neptune Saturn Uranus Which of the following statements about the beginning of the solar system is true? The planets that formed closest to the sun became gas ...
*Monday, January 26, 2015 at 3:35pm*

**anthropology**

Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for both question
*Monday, January 26, 2015 at 3:30pm*

**anthropology**

I am not understanding, it is confusing When individuals get married, alliances are formed between the two families. In some cultures there will also be a formal economic exchange. Three forms discussed in this chapter are bridewealth, bride service and dowry. Discuss each ...
*Monday, January 26, 2015 at 3:15pm*

**anthropology**

When individuals get married, alliances are formed between the two families. In some cultures there will also be a formal economic exchange. Three forms discussed in this chapter are bridewealth, bride service and dowry. Discuss each economic form with its positive and ...
*Monday, January 26, 2015 at 2:47pm*

**anthropology**

I look there and I can not found this answer. I been reading.As an anthropologist you are interested in the dynamics of a Matrilineal society. What characteristics would you identify as unique within this kinship system from your own
*Monday, January 26, 2015 at 2:46pm*

**anthropology**

Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for both questions.
*Monday, January 26, 2015 at 1:36pm*

**anthropology**

As an anthropologist you are interested in the dynamics of a Matrilineal society. What characteristics would you identify as unique within this kinship system from your own?
*Monday, January 26, 2015 at 1:34pm*

**Physics**

19. Two people of unequal mass are initially standing still on the ice with negligible friction. They then simultaneously push each other horizontally. Afterward, which of the following is true? * -The center of mass of the two person system moves in the direction of the less ...
*Monday, January 26, 2015 at 12:46pm*

**math**

Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18
*Monday, January 26, 2015 at 12:14pm*

**math**

Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18
*Monday, January 26, 2015 at 11:03am*

**Algebra I**

Write and solve a system of equations to solve the problem. At a film festival, Film A is 4 times as long as Film B. Together, the films are 160 min long. How long is each film?
*Monday, January 26, 2015 at 5:21am*

**algebra**

Write and solve a system of equations to solve the problem. At a film festival, Film A is 4 times as long as Film B. Together, the films are 160 min long. How long is each film?
*Sunday, January 25, 2015 at 8:02pm*

**Algebra 1**

Seiji and Gavin both worked hard over the summer. Together, they earned a total of $425. Gavin earned $25 more than Seiji. Hoe much did each of them earn? A. Write a system of two equations to model this program. I got 1 equation down, i just cant figure out the second
*Friday, January 23, 2015 at 6:53pm*

**S.S**

Whose mill launched the factory system? A. James Monroe B. Eli Whitney C. Samuell Slater D. Francis Cabot Lowell I think it's D.. am I right?
*Friday, January 23, 2015 at 2:18pm*

**math**

Solve the system of equations by elimination. (2 marks) y=2x^2-2x-3 y=-x^2-2x-3
*Friday, January 23, 2015 at 1:29pm*

**Math**

Identify the solution(s) of the system of equations, if any. x + 5y = 7 4x - 5y = 13
*Friday, January 23, 2015 at 12:04am*

**physics **

a 1kg object moving east with a velocity of 10 m/s collides with a .50kg object that is at rest. neglecting friction, what is the momentum of the system? please show work
*Thursday, January 22, 2015 at 8:57pm*

**physics**

The system shown in the figure below consists of a mass M = 3.5-kg block resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging m = 2.2-kg block. The pulley is a uniform...
*Thursday, January 22, 2015 at 3:08pm*

**math**

Solve the system of equations by elimination. (2 marks) y=2x^2-2x-3 y=-x^2-2x-3
*Thursday, January 22, 2015 at 1:05pm*

**physics**

A string that passes over a pulley has a 0.375 kg mass attached to one end and a 0.630 kg mass attached to the other end. The pulley, which is a disk of radius 9.50 cm, has friction in its axle. What is the magnitude of the frictional torque that must be exerted by the axle if...
*Wednesday, January 21, 2015 at 9:44pm*

**Math **

Explain how to solve the following system of equations. What is the solution to the system? 2x+2y+z=-5 3x+4y+2z=0 x+3y+2z=1
*Wednesday, January 21, 2015 at 9:31pm*

**Science**

What is the principle role of a tower within a cellular system? (1 point) A.to track data usage*** B.to transmit signals C.to pinpoint locations D.to reduce line noise
*Wednesday, January 21, 2015 at 4:03pm*

**Physic**

Hi, I'm learning about simple harmonic motion of a mass-spring system and I've been working at 2 problems for the past hour. I believe I have the right formula and I know what the answers should be but Im getting a different answer. Can you explain it step to step to ...
*Tuesday, January 20, 2015 at 8:30pm*

**Algebra**

Solve this system of linear equations. * Used the substitution method 3x - y = 8 4x - y = -15 ----------------------------------------- WORK y = 3x - 8 4x - (3x - 8 ) = -15 4x - 3x + 8 = -15 x + 8 = -15 x = -7 3x - y = 8 3(-7) - y = 8 -21 - y = 8 -y = 29 y = -29 The ...
*Tuesday, January 20, 2015 at 7:23pm*

**MATH**

what is the solution of the system y=-3x 3x+2y=6 a. 2, 6 b. -1, 3 c. -2, 6 d. 1.5, -4.5 I have an answer but I seriously doubt it's wrong. Please help for this one? Thanks
*Tuesday, January 20, 2015 at 5:55pm*

**MATH**

What is the solution to the system 7x+5y=19 -7x-2y=-16 a.(2,1) b.(1,2) c.(7,5) d.(-7,-2) Is it a. or b.?
*Tuesday, January 20, 2015 at 5:29pm*

**MATH**

For the following system of equations, what is the x-value of the solution? -x + 2y = 6 6y = x + 18 A. -18 B. 0 C. -6 D. 3 Confused? Still trying to work it out. Please help! Thanks
*Tuesday, January 20, 2015 at 4:56pm*

**Civics**

A state has passed a law making it illegal for people to protest at the state capital building. You think this law is unconstitutional, but your state court system upholds it. What federal branch has the final say on whether your state law is unconstitutional? None of them ...
*Monday, January 19, 2015 at 5:32pm*

**Civics**

"Every bill which shall have passed the House of Representatives and the senate, shall, before it became law, be presented to the president of the united states: If he approval he shall sign it, but if he shall not return it, with his objections to that house in which it ...
*Monday, January 19, 2015 at 4:31pm*

**Civics**

"He has made Judges dependent on his will alone, for the tenure of their offices, and the amount and payment of their salaries" is one of the grievances listed in the Declaration of Independence? How does today's U.S government address this issue? by dividing the...
*Monday, January 19, 2015 at 3:38pm*

**physics**

A 30.0 kg block falls from a height of 30,4 m. assuming a closed system its speed just before hitting the ground is about?
*Monday, January 19, 2015 at 12:22pm*

**physics**

A submarine dives 196.0 m at an angle of 18.0 ◦ below the horizontal. What is the horizontal component of the submarine’s displacement? Use the coordi- nate system where positive x is to the right and positive y is up. Answer in units of m.
*Monday, January 19, 2015 at 12:10pm*

**math**

Calculate the new coordinates of a block rotated about x axis by an angle of = 30 degrees. The original coordinates of the block are given relative to the global xyz axis system. A(1, 1, 2) B(2, I, 2) C(2, 2, 2) D(1, 2, 2) E(1, 1, 1) F(2, 1, 1) G(2, 2,1) 11(1, 2, 1).
*Monday, January 19, 2015 at 2:34am*

**Civics**

Which quotation(s) from the united states constitution provides for a federal; system of federal government? Statement I:- "The … Manner of Elections for Senators and Representatives shall be prescribed (will be decided by ) each state Legislatures; but the Congress ...
*Sunday, January 18, 2015 at 6:59pm*

**History**

American System Congressman that proposed? Was it Henry Clay It was designed to make the nation _____________ not needing to trade with others to survive
*Saturday, January 17, 2015 at 6:33pm*

**Health and Physical Education 8**

First of all, I'm not tryna suck up to get my question answered but i have to commend you people for taking your time to help others ON A SATURDAY! U guys r awesome. But anyways, my question: A main function of the skeletal system is to A.protect internal organs B.allow ...
*Saturday, January 17, 2015 at 11:27am*

**Algebra Help**

You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story must ...
*Thursday, January 15, 2015 at 8:42pm*

**Algebra**

You are going to write a fairy tale! Your story should include all of the standard elements of fairy tales. Begins “Once upon a time … ” Animals can act like humans. Involves magical items or helpers. Ends “ … happily ever after.” Your story must ...
*Thursday, January 15, 2015 at 7:57pm*

**Math**

I have figured out x to be 2 for this system of equations but now I need help on determining the solution of the equations which are y=4x and y=2x^2. Can you please help me!
*Thursday, January 15, 2015 at 1:20pm*

**physics **

Two geological field teams are working in a remote area. A global positioning system (GPS) tracker at their base camp shows the location of the first team as 43 km away, 23° north of west, and the second team as 29 km away, 33° east of north. When the first team uses ...
*Thursday, January 15, 2015 at 3:27am*

**math**

Solve the following system of equations: y=4x y=2x^2
*Wednesday, January 14, 2015 at 10:01pm*

**math**

What are the solutions for the following system of equations? y=8x+7 y=-x^2-5x+7
*Wednesday, January 14, 2015 at 9:56pm*

**Math**

Solve the following system of equations using both substitutio and elimination y=-x+4 y=-2x-4 Do I do what I do with the previous problems
*Wednesday, January 14, 2015 at 9:07pm*

**MATH!!!! AHHH!!!**

Im studying for finals! A system of equations is shown below: 8x + 5y = 9 3x + 2y = 4 Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. Part B: Show that the ...
*Wednesday, January 14, 2015 at 8:11pm*

**astronomy**

a light year is a unit of distance most comparable to the distance from earth to what? nearest galaxy nearest star outer solar system
*Wednesday, January 14, 2015 at 1:52pm*

**Math**

5. A system of linear inequalities is shown below: x + y ≥ 4 y < 2x – 3 Describe the steps to graph the solution set to the system of inequalities. Be specific. (10 points)
*Wednesday, January 14, 2015 at 9:07am*

**algebra**

Translate to a system of equations but do not solve. One canned juice drink is 20% orange juice; another is 10% orange juice. How many liters of each should be mixed together in order to get 10L that is 13% orange juice? How many liters of the 20% orange juice should be in the...
*Tuesday, January 13, 2015 at 10:46pm*

**algebra**

One evening 1500 concert tickets were sold for the Fairmont Summer Jazz Festival. Tickets cost $25 for covered pavilion seats and $20 for lawn seats. Total receipts were $35,000. How many of each type of tickets were sold? Let x equal the number of pavilion seats sold. Let y ...
*Tuesday, January 13, 2015 at 10:40pm*

**algebra**

solve the system of equations using the substitution method 8x - 9 = y y - 8x = -4
*Tuesday, January 13, 2015 at 9:50pm*

**science**

Which systems move the human body? I heard there were the skeletal, nervous, and muscular system. ??
*Tuesday, January 13, 2015 at 8:00pm*

**algebra**

Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10
*Tuesday, January 13, 2015 at 7:54pm*

**algebra**

solve the system of equations using the substitution method 8x - 9 = y, y - 8x = 4
*Tuesday, January 13, 2015 at 7:52pm*

**math**

San Diego left San Francisco on Tuesday at 6.30 p.m. and took 8 hours 45 minutes to reach his home. On what day and at what time in a 24 hour system did he reach home?
*Monday, January 12, 2015 at 9:56pm*

**Math**

Brenda's School is selling tickets to a spring musical. On the first day of ticket sales the school sold 3 senior citizen tickets and 9 child tickets for a total of $75. The school took in $67 on the second day by selling 8 senior citizen tickets and 5 child tickets Set up...
*Monday, January 12, 2015 at 5:33pm*

**Maths**

a missile guidance system has five fail-safe components. the probability of each failing is 0.05. find these probabilities. a) Exactly 2 will fail b) More than 2 will fail c) All will fail. d) Compare the answer for parts a, b, c, and explain why these results are reasonable
*Monday, January 12, 2015 at 2:42pm*

**Health **

the muscular system is essential because it allows our bones to
*Monday, January 12, 2015 at 1:24pm*

**Algebra **

The Badys and their maid, Alice, took a trip to Hawaii for their summer vacation. The travel agent told Ike that the trip would cost $210 for each child plus another $315 per adult. According to Ike Bady’s credit card receipt, the trip cost a total of $2205 for all 9 of ...
*Monday, January 12, 2015 at 12:22pm*

**Human Resource Information System**

Scenario: Castle’s Family Restaurant has eight restaurants in the northern California area with approximately 300–340 employees. Most of the employees are part time, with approximately 40% of them full time. The operations manager, Jay Morgan, also acts as the HR ...
*Sunday, January 11, 2015 at 8:13pm*

**Algebra Help Please**

solve the system of equations using the substitution method 8x - 9 = y y - 8x = 4
*Sunday, January 11, 2015 at 7:41pm*

**Algebra Help!!**

Solve the given system by the substitution method. 3x + y = 17 5x -2y = 10
*Sunday, January 11, 2015 at 7:35pm*

**Algebra help please!**

solve each system graphically. if a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. y = 2 - x 2x + 2y = 4
*Sunday, January 11, 2015 at 7:27pm*

**Algebra 1**

solve the system of equations using the substitution method. 8x-9=y, y-8x=-4
*Sunday, January 11, 2015 at 7:23pm*

**Algebra 2**

Solve the system algebraically 2x^2-5y^2=1 x^2+5y^2=68 Please show work!!!
*Sunday, January 11, 2015 at 3:42pm*

**Algebra 1**

Where would the system below intersect on a graph? y=12x+15 y=15x I know that: x=5 y=75 But I need help on how to graph it.
*Friday, January 9, 2015 at 3:49pm*

**Math**

1. Using the following system of equations : 4x +2x = 6 2x + y= 3 A: Find the solution(s) algebraically showing all work (4 pts) B: State whether it is independent consistent, dependent consistent, or inconsistent. (2pts) C: Demonstrate how to check the systems of solutions, ...
*Friday, January 9, 2015 at 9:03am*

**Algebra 1**

Translate to a system of equations. But do not solve. A nontoxic floor wax can be made from lemon juice and food-grade linseed oil. The amount of oil should be twice the amount of lemon juice. How much of each ingredient is needed to make 45 ounces of floor wax? Let x ...
*Thursday, January 8, 2015 at 10:03pm*

**Algebra**

Solve each system graphically. Be sure to check your solution.If a system has an infinite number of solutions, use set-builder notation to write the solution set.If a system has no solution, state this. 2x - y = 1 x + 2y = 3
*Thursday, January 8, 2015 at 9:45pm*

**Algebra 1**

Solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use set-builder notation to write the solution set.If a system has no solution, state this. I tried this and found no solution, is this right? x + y = 9 x - y = 1
*Thursday, January 8, 2015 at 9:38pm*

**Pre-Calc/Trig**

Complete the following for each system that involves one or more quadratic equations: Solve the system algebraically 7y^2-5x^2+20x=3 5x^2+21y^2=209
*Thursday, January 8, 2015 at 1:40pm*

**physics**

A heavy table of mass M is vibrationally isolated by being hung from the ceiling by springs, so that its frequency of vertical oscillation is \omega_0 (take \omega_0 to be 2\pi/sec, a typical value). Assume now that the ceiling vibrates vertically with amplitude A at frequency...
*Thursday, January 8, 2015 at 11:38am*

**criminology**

What type of discretion might be exercised within the local police department? How does it "funnel" people into the criminal justice system or kick them out?
*Thursday, January 8, 2015 at 10:31am*

**Algebra**

Determine if the ordered pair ( -5,2) is a solution to the following system of equations. x + 3y = 1 y = 3x + 17
*Wednesday, January 7, 2015 at 8:23pm*

**mechanics and heat**

At the same instant that a 0.5 kg ball is dropped from 25 m above earth , a second ball , with a mass of 0.25 kg , is thrown straight upward from earth’s surface with an initial speed of 15 m/s . They move along nearby lines and pass without colliding. What is the ...
*Wednesday, January 7, 2015 at 7:34pm*

**mechanics and heat**

Four point masses are located at the four corners of a rectangle as shown in the figure. Calculate the total moment of inertia of this system measured from (a) axis 1 (b) axis 2 (c) axis 3, and (d) an axis that passes through A and perpendicular to the plane containing this ...
*Wednesday, January 7, 2015 at 7:33pm*

**Science**

1. Name the components of the respiratory system in the order incoming air would encounter them during breathing. trachea, pharynx, larynx, alveoli, bronchi bronchi, larynx, alveoli, trachea, pharynx larynx, trachea, bronchi, pharynx, alveoli pharynx, larynx, trachea, bronchi...
*Wednesday, January 7, 2015 at 5:20pm*

**phy**

A 10kg mass and a 2.0kg mass are connected by a light string over a massless, frictionless pulley. if g=9.8ms^-2, what is the acceleration of the system when released? (98ms^-2)
*Wednesday, January 7, 2015 at 2:34am*

**Algebra**

I have been trying to solve this for two hours help. Determine whether the ordered pair (-5,2) is a solution of the following system of equations x - 3y = 1 y= 3x - 17
*Wednesday, January 7, 2015 at 1:41am*

**Algebra**

I can find no solution to this system of equations. Solve the system of equations using the substitution method 2x + 4y = -2 2x - y = 4
*Wednesday, January 7, 2015 at 1:26am*

**physics**

Two blocks are placed at the ends of a horizontal massless board, as in the drawing. The board is kept from rotating and rests on a support that serves as an axis of rotation. The block on the right has a mass of 5.4 kg. Determine the magnitude of the angular acceleration when...
*Tuesday, January 6, 2015 at 8:40pm*

**Civics**

Montesquieu's system of "separation of powers" means that Government is divided into three branches*** People are born with rights that can not be taken away. government may rule because the citizens consent people have the right to life,liberty, and property.
*Tuesday, January 6, 2015 at 4:37pm*

**Civics**

Why did the framers of the constitution include the system of checks and balances? To ensure the powers of each branch of government are limited and checked by another branch To create a process for the American people to choose their representatives for government branches To...
*Tuesday, January 6, 2015 at 2:42pm*

**Health**

Which of the following is the minimum level of structure needed to perform the function of waste removal? A. body system B. tissue C. cell D. organ C or A
*Tuesday, January 6, 2015 at 1:42pm*

**Math**

Q. There is a hot hair ballon festival in System Springs. Seventy two gallons registered to participate,paying $25 each. Five of those who registered didn't show up and we refunded half of their money.mthree additional balloons showed up and paid the registration cost plus...
*Monday, January 5, 2015 at 7:23pm*

**Algebra**

system of equations, the sum of two numbers is 46. the first number is 3/20 of the second number is it x + y = 46, x = 3/20y?
*Monday, January 5, 2015 at 4:27pm*

**algebra 1**

Which of the following points are solutions to the system of inequalities shown below? Check all that apply. y>4x + 2 y<4x + 5 A. (4, 21) B. (5, 24) C. (5, 26) D. (-4, 20)
*Monday, January 5, 2015 at 2:00pm*

**History **

1. How is the Seven Years War related to the French and indian war? A- The French and Indian War directly caused the Seven Year's War B-; The French and Indian War was part of the Seven Year's War C- The Seven Years' War was more of a land war than the French and ...
*Sunday, January 4, 2015 at 7:39pm*

**Algebra 1**

Translate problem situation to a system of equations. Do not solve. The sum of two numbers is 10 the first number is 2/3 of the second number. What are the numbers? would it be 6, and 4? or 7, and 3? I know 2/3 of 10 is 6.66666667, so being after the decimal is higher than 5 ...
*Sunday, January 4, 2015 at 2:24am*

**Physics, Math, Aerospace, Engineering**

A de-orbit burn, similar (but not the same) to that presented in the previous math problem, has been performed. During this de-orbit burn a pre-calculated ∆V (delta V, change in velocity) of 99.1 meters per second will be used to decrease the Shuttle’s altitude from...
*Saturday, January 3, 2015 at 7:22pm*

**math**

solve the system algebraically and graphically 32x^2+9y^2=324 3y^2-x^2=3
*Saturday, January 3, 2015 at 2:15pm*

**Algebra**

Help!! I am having difficulty with a problem for hours now and if I could get some help, my head might stop pounding.Solve each system graphically. if a system has an infinite number of solutions, use set builder notation to write the solution set. If a system has no solution...
*Friday, January 2, 2015 at 4:44am*

**Physics**

A block and tackle with a velocity ratio of 5 is used to raise a mass of 25kg through a vertical distances of 40cm at a steady rate.if the effort is equal to 60N,determine.(a)The distance moved by the effort.(b)The workdone by the effort in lifting the load.(c)The loss in ...
*Thursday, January 1, 2015 at 10:54am*

**Chemistry*****

A mixture containing 19.8 moles of H2 and 7.2 mole of I2 was allowed to reach equilibrium in a 5 L closed vessel at ToC according to the equation: H2 (g) + I2 (g) 2HI (g) At equilibrium, 14 moles of H2 was present. The equilibrium constant for this reaction is denoted as Kc(1...
*Tuesday, December 30, 2014 at 6:39pm*