Thursday

January 29, 2015

January 29, 2015

**Recent Homework Questions About Operating Systems**

Post a New Question | Current Questions

**Physics**

Two cars are parked on a street. A third car hits the back of the second car and causes all of the cars to move. (Ignore the distance between the cars). Calculate: (a)The acceleration of the whole system; (b)the net force on each car; (c)the contact force that each car exerts ...
*Friday, March 14, 2014 at 7:57pm*

**physics**

What is the gravitational field strength at a height h above the surface of the Earth? R is the radius of the earth gR2(R+h)2 gR(R+h) g(R−h)R g(R−h)2R2 2 The instrument used for experimental determination of the value of the universal gravitational constant G is ...
*Friday, March 14, 2014 at 7:24am*

**Math**

For what value of a, would the system have an infinite number of solutions? 2x-y=5 8x-47=2a A) 2 B) 4 C)5 D)10 E)20
*Friday, March 14, 2014 at 1:18am*

**Linear Algebra**

I need help please!! How many solutions does the system of equations have? 2x=-10y+6 and x+5y=3 a. one b. two c. infinitely many d. none y=4x+3 and y=4x+4 a. one b. two c. infinitely many d. none x-4y=12 and y=1/4x-3 a. one b. two c. infinitely many d. none
*Thursday, March 13, 2014 at 1:42pm*

**S.S (DAMON)**

1.B 2.A 3.D 4.B 5.B 1. A tropical climate is key to which economic activity in the lowlands of central emerica and the carribean? A. commerce and manufacturing B. production of cash crops C. animal husbandry D. mining 2. Which country has the regions most stable democracy? A...
*Thursday, March 13, 2014 at 1:38pm*

**finance**

A project has an initial requirement of $261,000 for fixed assets and $27,000 for net working capital. The fixed assets will be depreciated to a zero book value over the 4-year life of the project and have an estimated salvage value of $78,000. All of the net working capital ...
*Thursday, March 13, 2014 at 1:07pm*

**S.S (DAMON)**

please check these answer damon or anyone else 1. A tropical climate is key to which economic activity in the lowlands of central emerica and the carribean? A. commerce and manufacturing B. production of cash crops C. animal husbandry D. mining 2. Which country has the regions...
*Thursday, March 13, 2014 at 12:52pm*

**Check my social studies(PLEASE)**

1.D 2.D 3.C 4.A 5.C 6.A 7.B 8.B 9.D 10.A 1. Which natural diasaster poses the most common challenge to central america and caribbean? A. tornadoes B. hurricanes C. floods D. drought 2. Corn cultivations alow the maya civilization to become powerful by A. developing a calendar ...
*Thursday, March 13, 2014 at 11:20am*

**Physics**

Ken has five 200W security lights on outside of home. How much energy do the security lights use in 8 hrs? If the cost of electricity is 8 cents per kWh,what is the cost of operating the security lights ? Please help I'm not sure which formula to use?
*Wednesday, March 12, 2014 at 11:45pm*

**algebra**

Solve the system by graphing. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.) 4x + 2y = 12 5x − 4y = 2
*Wednesday, March 12, 2014 at 9:43pm*

**algebra**

Solve the system by graphing. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.) x − y = 2 2x + 3y = 19
*Wednesday, March 12, 2014 at 9:41pm*

**please check(Social studies)**

please check my answers thanks 1.B 2.C 3.B 4.B 5.C and D 1.How did the haitian revolution impact the history of the united states? A.It brought the united states into a war with spain over cuba. B.France no longer had haiti,so Napeleon was willing to sell louisiana. C.Slave ...
*Wednesday, March 12, 2014 at 8:04pm*

**Physics**

A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What is the change in kinetic energy of the car&#...
*Wednesday, March 12, 2014 at 6:02pm*

**help with math!!!!**

Solve each system using substitution. Tell whether the system has one solution, infinitely many solutions, or no solution. 13. -x + y = -13 3x - 1 = 19 15. 1/3y= 7/3 x + 5/3 x - 3y = 5 17. 3x + y = -13 -2x + 5y = -54
*Wednesday, March 12, 2014 at 5:11pm*

**Chemistry Urgent**

95.0mL of H2O is initially at room temperature (22.0∘C ). A chilled steel rod at 2.0∘C is placed in the water. If the final temperature of the system is 21.3∘C , what is the mass of the steel bar? Specific heat of water = 4.18 J/g⋅∘C Specific heat...
*Tuesday, March 11, 2014 at 10:38pm*

**chemistry**

95.0mLmL of H2O\rm H_2O is initially at room temperature (22.0∘C\rm{} ^{\circ}C). A chilled steel rod at 2.0∘C\rm ^{\circ}C is placed in the water. If the final temperature of the system is 21.3∘C^{\circ}C, what is the mass of the steel bar? Specific heat of ...
*Tuesday, March 11, 2014 at 10:28pm*

**Physics 141**

A mine car (mass mcar = 444 kg) rolls at a speed of vcar = 0.52 m/s on a horizontal track, as the drawing shows. An mcoal = 141 kg chunk of coal has a speed of vcoal = 0.79 m/s when it leaves the chute. Determine the speed of the car-coal system after the coal has come to rest...
*Tuesday, March 11, 2014 at 10:14pm*

**math**

2. How is the graph of y = –2x² – 5 different from the graph of y = –2x²? (1 point) It is shifted 5 units up. It is shifted 5 units down. It is shifted 5 units left. It is shifted 5 units right. 3. A model rocket is launched from a roof into a large ...
*Tuesday, March 11, 2014 at 8:22pm*

**physics**

Under what conditions is mass conserved? A. Whenever the system is isolated or closed. B. Only when the change is a chemical one. C. Always. D. Only when the change is a physical one. I was thinking A.
*Tuesday, March 11, 2014 at 2:32pm*

**Physics**

A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What is the change in kinetic energy of the car&#...
*Monday, March 10, 2014 at 9:26pm*

**Alegbra**

Mary has a total of $5000 invested in two accounts. One account pays 5% and the other 8%. Her interest in the first year was $331. Write and solve a system of equations to find out how much she has invested in both accounts.
*Monday, March 10, 2014 at 3:27pm*

**Chemistry**

A 108 mL gas sample has a mass of 77.96 mg at a pressure of 1140 mmHg and a temperature of 183 Â°C. Assume ideal gas behavior and a completely insulated system, and please donâ€™t forget units with your answers. The system is cooled. Calculate the ...
*Monday, March 10, 2014 at 11:30am*

**Physics**

A rope is used to pull a 5.19 kg block at constant speed 3.38 m along a horizontal floor. The force on the block from the rope is 3.23 N and directed 20.0° above the horizontal. What are (a) the work done by the rope's force, (b) the increase in thermal energy of the ...
*Monday, March 10, 2014 at 10:48am*

**Physics**

The southwest corner of a football field is selected as the origin of a rectangular coordinate system. A football is placed on the field at (x, y) = (37.7 m, 62.2 m). How long would it take a student, walking at a speed of 1.93 m/s, directly from the corner towards the ...
*Sunday, March 9, 2014 at 10:27pm*

**Ashford PHI 208**

PHI 208 Week 2 - Readings Quiz 1. Tom Regan’s view of animals is that (Points : 1) They are important but not quite as important as human beings They have rights, which means that they should never be used for human purposes They may be ethically used because they were ...
*Sunday, March 9, 2014 at 7:47pm*

**Physics**

A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction as the car at a lower speed v2. (Use any variable or symbol stated above as necessary.) (b) What is the change in kinetic energy of the car&#...
*Saturday, March 8, 2014 at 3:15pm*

**Physics**

Block A in the figure weighs 48.0N . The coefficient of static friction between the block and the surface on which it rests is 0.250. The weight w is 6.00N and the system remains at rest. -Find the friction force exerted on block A. -Find the maximum weight w for which the ...
*Saturday, March 8, 2014 at 11:10am*

**Algebra 1 Answer Check (Reiny)**

Factor each trinomial. 1. x^2 + 6x + 5 A: (x + 1)(x +5) 2. x^2 - 7x - 12 A: (x - 3)(x - 4) Solve each system by substitution. 3. 2x - y = 1; x - y = -2 A: (3, 5)
*Friday, March 7, 2014 at 3:37pm*

**Physics**

A string going over a massless frictionless pulley connects two blocks of masses 6.4 kg and 13 kg. As shown on the picture below, the 6.4 kg block lies on a 32◦ incline; the coefficient of kinetic friction between the block and the incline is μ= 0.3. The 13 kg block...
*Thursday, March 6, 2014 at 3:12pm*

**Physics**

1. Two blocks on a frictionless horizontal surface are connected by a light string. where m1 = 6.21 kg and m2 = 19.5 kg. A force of 48.4 N 6.21kg --T-- 19.5kg ----->48.4 N The acceleration of gravity is 9.8 m/s^2. Find the acceleration of the system. Answer in units of m/s^...
*Thursday, March 6, 2014 at 3:08pm*

**physics**

A string going over a massless frictionless pulley connects two blocks of masses 4.4 kg and 11 kg. As shown on the picture below, the 4.4 kg block lies on a 23◦ incline; the coefficient of kinetic friction between the block and the incline is μ = 0.29. The 11 kg ...
*Thursday, March 6, 2014 at 1:24pm*

**physics**

what is the physics behind the process of administering the following 1. measurement of blood pressure using sphygmomanometer 2.giving injections 3.administering intravenous infusion 4.giving oxygen in the ward and operating theater 5. administering blood transfusion 6.sucking...
*Wednesday, March 5, 2014 at 11:04pm*

**Math- NOT CALCULUS**

The hourly profit ($P) obtained from operating a fleet of n taxis is given by P=-2n^2+84n-45 What is the profit if 20 taxis are on the road? What is the maximum hourly profit? What number of taxis gives the max hourly profit? How much money is lost per hour if no taxis are on ...
*Wednesday, March 5, 2014 at 8:58pm*

**Physics**

If m1 = 4.72kg, what mass m2 is required to balance the system? (two masses are connected by a rope. m1 is sitting on an incline and m2 is hanging from a pulley)
*Wednesday, March 5, 2014 at 8:53pm*

**Math **

The hourly profit ($P) obtained from operating a fleet of n taxis is given by P=-2n^2+84n-45 What is the profit if 20 taxis are on the road? What is the maximum hourly profit? What number of taxis gives the max hourly profit? How much money is lost per hour if no taxis are on ...
*Wednesday, March 5, 2014 at 8:10pm*

**computers**

What overriding philosophy of the Windows 8 operating system makes it unique compared to earlier Microsoft operating systems? A. It is a universal operating system for all types of devices. B. It can host both 32- and 64-bit applications. C. Up to 192 users can have a separate...
*Wednesday, March 5, 2014 at 1:37pm*

**Physics**

Two children pull a third child on a snow saucer sled exerting forces F1 and F2 as shown from above in Figure 4.36. Find the acceleration of the 49.00-kg sled and child system. Note that the direction of the frictional force is unspecified; it will be in the opposite direction...
*Tuesday, March 4, 2014 at 11:52pm*

**physics**

A roller-coaster car of mass 1.80 103 kg is initially at the top of a rise at point circle a. It then moves 40.8 m at an angle of 50.0° below the horizontal to a lower point circle b. (a) Find both the potential energy of the system when the car is at points circle a and ...
*Tuesday, March 4, 2014 at 11:26pm*

**algebra**

Mary has a total of $5000 invested in two accounts. One account pays 5% and the other 8%. Her interest in the first year was $331. Write and solve a system of equations to find out how much she has invested in both accounts.
*Tuesday, March 4, 2014 at 11:14pm*

**algebra**

The sum of two numbers is 30 and their difference is 2. Find the two numbers by writing and solving a system of equations.
*Tuesday, March 4, 2014 at 10:54pm*

**physics**

A bullet with mass 4.95 g is fired horizontally into a 1.994 kg block attached to a horizontal spring. The spring has a constant 5.58 10^2 N/m and reaches a maximum compression of 6.27 cm. (a) Find the initial speed of the bullet-block system. (b) Find the speed of the bullet.
*Tuesday, March 4, 2014 at 10:06pm*

**History-help**

I need help on this! Please help me! Thank you :) you're a huge blessing! What is driving the economic changes in china and why? What economic system do you believe china is? Why? What are the goals and dreams of the Chinese compared Americans? What are the costs that ...
*Tuesday, March 4, 2014 at 6:50pm*

**Economics**

A clinic has $1 million in revenues and $950,000 in costs. What is its operating margin? My answer is 5% However the second question is if the clinic invested $400,000. What is the return on investment and is it adequate. Not sure how I calculate that. Would I take the 5% of $...
*Tuesday, March 4, 2014 at 2:12pm*

**please check(Social studies)**

im not gonna get frustrated with this anymore because it wont help me but i read some info online and thought these new answers where related to the topic 16.Which aspect of Aztec culture benefitted the Spanish when they were conquering the Aztecs? A.The Aztecs made enemies of...
*Tuesday, March 4, 2014 at 12:19pm*

**Social studies***help*****

HI im Dalia and i just want my answers to be checked for the subject of Social studies.thanks again. 6.Which aspect of Aztec culture benefitted the Spanish when they were conquering the Aztecs? A.The Aztecs made enemies of the surrounding tribes who were more than happy to ...
*Tuesday, March 4, 2014 at 11:44am*

**Astronomy**

Imagine you are on some far away planetary system looking for planets in the galactic neighborhood and you spot our sun in your sky. In degrees, what is the maximum the orbit can be tilted from 90 in order to see a transiting eclipse (assume the longitude angle is 0)?
*Tuesday, March 4, 2014 at 8:18am*

**algebra**

Rachel has 15 coins with a value of $2.85. If the coins are either dimes or quarters, how many of each coin does she have? Write and solve using a system of equations
*Monday, March 3, 2014 at 11:23pm*

**physics**

Find the center of mass of a system composed of three spherical objects with masses of 3.0kg , 1.6kg , and 4.3kg and centers located at (-6.7m , 0), (1.0m , 0), and (2.7m , 0), respectively. Express your answers using two significant figures separated by a comma. xCM, yCM
*Monday, March 3, 2014 at 10:49pm*

**Alegbra**

Mary has a total of $5000 invested in two accounts. One account pays 5% and the other 8%. Her interest in the first year was $331. Write and solve a system of equations to find out how much she has invested in both accounts.
*Monday, March 3, 2014 at 4:14pm*

**physics**

a truck of mass 8500Kg is pulling a trailer of mass 27 000Kg on a level road.The coefficient of kinetic friction is 0,20.A horizontal force of 75 000N moves the truck forward.question:calculate the magnitude of the acceleration of the system
*Monday, March 3, 2014 at 10:40am*

**Alegbra**

Solve the following systems of equations using the addition (elimination) method. What type of system is it? Name the solution if there is one. 13. x+y=6 x-y=4
*Sunday, March 2, 2014 at 8:46pm*

**Alegbra**

The length of a pool is 3 feet more than twice its width. If the perimeter of the pool is 72 feet, find the dimensions of the pool by writing and solving a system of equations.
*Sunday, March 2, 2014 at 8:44pm*

**Alegbra**

Mary has a total of $5000 invested in two accounts. One account pays 5% and the other 8%. Her interest in the first year was $331. Write and solve a system of equations to find out how much she has invested in both accounts.
*Sunday, March 2, 2014 at 8:43pm*

**business**

i need help with this essay can someone help its for paralegal studies introduction to computers. Prepare and submit a proposal to Bill that gives your suggested solution to his business plan. Provide Bill with the details of what he needs to purchase in order to have what he ...
*Sunday, March 2, 2014 at 4:30pm*

**education **

prepare and submit a proposal to bill that gives your suggested solution to his business plan. provide bill with the details of what he needs to purchase in order to have what he needs to conduct his business using today's technology, make sure you include the following ...
*Sunday, March 2, 2014 at 3:50pm*

**math**

Determine the number of solutions for the following system of equations 2x+5y=7 10y=-4x+14 1)Exactly one solution 2)No solutions 3)infinite solutions 4)Exactly 2 solutions I solved the equations and got y=7-2X/5 y=-4X+14/10 and I said infinite solutions. Is that correct?
*Sunday, March 2, 2014 at 2:41pm*

**mat 116**

identify the solution(s)of the system of equations, if any -2x-4y=1 and 12y=-6x-3
*Sunday, March 2, 2014 at 9:04am*

**mat116**

consider the following system of equations y=3x-7 andy-3x=5 what can you conclude about the system of equations
*Sunday, March 2, 2014 at 9:03am*

**structural design**

ASHI standards require a home inspector to identify and describe the type of structure and materials of construction before A. testing systems scientifically. B. evaluating each system. C. establishing value. D. reporting remaining usefulness.
*Saturday, March 1, 2014 at 6:49pm*

**philosophy (john dewey)**

The expected outcome or pattern of Developed Standards of "Rules of Conduct", "Moral Training" and "School Organizations" served to meet the national demands. What is the problem with this being upheld in our educational system?
*Saturday, March 1, 2014 at 6:45pm*

**chemistry**

Hello, a few questions: Thanks so much! 1. The heat capacities of titanium and water are 0.522 J g-1 K-1 and 4.184 J g-1 K-1, respectively. What is the final temperature of the titanium-water mixture if a 175.0-g sample of titanium, initially at 90.0oC, is added to 50.0 g of ...
*Saturday, March 1, 2014 at 3:51pm*

**Algebra 1**

2x-4y=32 2x-8y=48 Find the solution of this system of equations.
*Friday, February 28, 2014 at 11:49pm*

**science**

4. a scientist exams a sample of an object from the solar system . there is evidence that the object included ice . the sample most likely comes from a(n) ( 1point ) a . Asteroid b. comet c dwarf planet d meteroroid
*Friday, February 28, 2014 at 9:34pm*

**Biology**

Which of the following is correctly matched with its tissue system? cortex/dermal tissue system cuticle/vascular tissue system phloem/dermal tissue system stele/vascular tissue system>>>> my choosen answer
*Friday, February 28, 2014 at 9:00pm*

**thermodinamics**

2. A sample of an ideal gas underwent an expansion against a constant external pressure of 1.0 bar from 1.0 m3, 20.0 bar, and 273 K to 100.0 m3, 1.0 bar, and 273 K. What is the work done by the system on the surroundings
*Friday, February 28, 2014 at 5:22pm*

**Mechanics**

A light inextensible string, which passes over a fixed smooth peg A, is fastened at one end to a small ring R of mass 0.1kg and at the other end to a particle P of mass 0.3kg. The ring is threaded on a fixed rough vertical wire and the system rests in equilibrium with the part...
*Friday, February 28, 2014 at 2:59pm*

**hardware**

Difference between disk operating system and windows operating system?
*Friday, February 28, 2014 at 5:31am*

**operating system**

What is the difference between MsDOS and Ms WINDOWS?
*Friday, February 28, 2014 at 5:25am*

**Physics**

1. Two blocks on a frictionless horizontal surface are connected by a light string. where m1 = 6.21 kg and m2 = 19.5 kg. A force of 48.4 N 6.21kg --T-- 19.5kg ----->48.4 N The acceleration of gravity is 9.8 m/s^2. Find the acceleration of the system. Answer in units of m/s^...
*Thursday, February 27, 2014 at 2:51am*

**Alegbra**

. Rachel has 15 coins with a value of $2.85. If the coins are either dimes or quarters, how many of each coin does she have? Write and solve using a system of equations.
*Thursday, February 27, 2014 at 1:32am*

**Alegbra**

A desk and a chair cost $200 as a set. If the desk costs four times more than the chair, how much does each one cost. Write and solve using a system of equations.
*Thursday, February 27, 2014 at 1:32am*

**Alegbra**

The length of a pool is 3 feet more than twice its width. If the perimeter of the pool is 72 feet, find the dimensions of the pool by writing and solving a system of equations.
*Thursday, February 27, 2014 at 1:31am*

**Alegbra**

Mary has a total of $5000 invested in two accounts. One account pays 5% and the other 8%. Her interest in the first year was $331. Write and solve a system of equations to find out how much she has invested in both accounts.
*Thursday, February 27, 2014 at 1:30am*

**Alegbra**

The sum of two numbers is 30 and their difference is 2. Find the two numbers by writing and solving a system of equations.
*Thursday, February 27, 2014 at 1:28am*

**algebra**

A desk and a chair cost $200 as a set. If the desk costs four times more than the chair, how much does each one cost. Write and solve using a system of equations.
*Wednesday, February 26, 2014 at 9:18pm*

**Math**

Why animals and plants are found on earth but are not on other planets of the solar system? Please ,,help me
*Wednesday, February 26, 2014 at 12:11pm*

**chemistry**

at an equilibrium mixture of PCl5, PCl3, and Cl2 has partial pressures of 217.0 Torr, 13.2 Torr and 13.2 Torr respectively. a quantity of Cl2 is injected into the mixture, and the total pressure jumps to 263.0 Torr (at the moment of mixing). the system then re-equilibrates. ...
*Wednesday, February 26, 2014 at 5:14am*

**social studies**

In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail of Tears 2. ...
*Tuesday, February 25, 2014 at 7:04pm*

**Science help ms sue.**

Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements about the solar system&#...
*Tuesday, February 25, 2014 at 6:14pm*

**social studies(updated answers)**

8.Which region of Mexico is best for growing crops? A.Baja California B.Southern Mexico Plateau (I PICK THIS) C.Yucatán D.Northwestern Mexico 9.Like the United States, the government of Mexico is A.breaking away from a one-party system. B.an established dictatorship. C....
*Tuesday, February 25, 2014 at 1:29pm*

**science**

which of the following body systems does NOT rely on the autonomic nervous system to stimulate involuntary events? A. Skeletal System B. Digestive System C. Circulatory System D. Respiratory System
*Tuesday, February 25, 2014 at 1:22pm*

**social studies(updated answers)**

mrs.sue i never got to put my updated answers from when you said they were wrong so here they are please check them. 5.Mexico City was built by the A.Olmecs, when they began to grow maize. B.Maya, after they conquered the Valley of Mexico. C.Spanish, on the ruins of the Aztec ...
*Tuesday, February 25, 2014 at 1:13pm*

**physics **

Two spheres are mounted on identical horizontal springs and rest on a frictionless table, as in the drawing. When the spheres are uncharged, the spacing between them is 0.05 m, and the springs are unstrained. When each sphere has a charge of +1.6 £gC, the spacing doubles...
*Tuesday, February 25, 2014 at 12:07pm*

**chemistry**

at an equilibrium mixture of PCl5, PCl3, and Cl2 has partial pressures of 217.0 Torr, 13.2 Torr and 13.2 Torr respectively. a quantity of Cl2 is injected into the mixture, and the total pressure jumps to 263.0 Torr (at the moment of mixing). the system then re-equilibrates. ...
*Tuesday, February 25, 2014 at 6:42am*

**social studies **

Describe the apportionment system for state legislative districts.
*Monday, February 24, 2014 at 9:26am*

**social studies**

In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail ...
*Sunday, February 23, 2014 at 6:14pm*

**U.S History - Pls check my answer :)**

Document A: It is impossible that the allied powers should extend their political system to any portion of either continent without endangering our peace and happiness; nor can anyone believe that our southern brethren, if left to themselves, would adopt it of their own accord...
*Sunday, February 23, 2014 at 5:14pm*

**college math **

Acrosonic manufactures a model G loudspeaker system in Plants I and II. The output at Plant I is at most 800/month, and the output at Plant II is at most 600/month. Model G loudspeaker systems are also shipped to the three warehouses—A, B, and C—whose minimum monthly...
*Sunday, February 23, 2014 at 2:37pm*

**Chemistry - check answers**

Can someone please check my answers and make sure they're correct? A) How much heat would it take to raise the temperature of 46.0 g of water from 90.0 to 100.0 C? Answer using correct sig figs, sign, and units. My answer: +1.92x10^3 J B) How many joules are released when ...
*Sunday, February 23, 2014 at 10:53am*

**Physics**

A 1.34‒kg ball is attached to a rigid vertical rod by means of two massless strings each 1.70 m long. The strings are attached to the rod at points 1.70 m apart. The system is rotating about the axis of the rod, both strings being taut and forming an equilateral triangle...
*Sunday, February 23, 2014 at 2:42am*

**college math HELP!!!!!**

Acrosonic manufactures a model G loudspeaker system in Plants I and II. The output at Plant I is at most 800/month, and the output at Plant II is at most 600/month. Model G loudspeaker systems are also shipped to the three warehouses—A, B, and C—whose minimum monthly...
*Saturday, February 22, 2014 at 7:11pm*

**Algebra**

Solve the following system of equations by the elimination method. 1/3x+1/4y=7 1/3x-3/4y=-9 a)The solution is___?(Type an ordered pair. Use integers or fractions for any numbers in the expression) b)Infinitely many solutions c)No solution
*Saturday, February 22, 2014 at 3:46pm*

**Physics**

Consider a car is heading down a 5.5° slope (one that makes an angle of 5.5° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires and that the coefficient of static friction is ...
*Friday, February 21, 2014 at 8:42pm*

**Physics**

A string going over a massless frictionless pulley connects two blocks of masses 6.4 kg and 13 kg. As shown on the picture below, the 6.4 kg block lies on a 32◦ incline; the coefficient of kinetic friction between the block and the incline is μ= 0.3. The 13 kg block...
*Friday, February 21, 2014 at 8:36pm*

**Physics**

1. Two blocks on a frictionless horizontal surface are connected by a light string. The acceleration of gravity is 9.8 m/s^2. Find the acceleration of the system. Answer in units of m/s^2. 2. What is the tension in the string between the blocks? Answer in units of N. 3. If ...
*Friday, February 21, 2014 at 8:09pm*

**history**

What was the role of civil service examinations in Ming China? does anyone have any idea what the answer could be. I was looking on the internet and found this- --The civil service examination system, a an effective cultural, social, political, and educational construction ...
*Friday, February 21, 2014 at 6:49pm*

**physics**

Three blocks on a frictionless horizontal surface are in contact with each other. A force F is applied to block A and the blocks start to slide to the right of their initial position. Determine the acceleration of the system, if m_A = 12 kg, m_B = 38 kg, m_C = 4700 g, and F = ...
*Friday, February 21, 2014 at 1:12pm*

**Chemistry**

For the reaction given, the value of the equilibrium of the constant at 400 K is 7.0. Br2(g)+ Cl2(g)=2BrCl(g) Does the: Reaction proceed to the left? Reaction proceed to the right? Partial pressure represent a system in an equation?
*Friday, February 21, 2014 at 10:44am*

**Science**

An electric eel can generate a voltage of 600V across its body. The eel does this via a system of up to 6000 “electroplaques” inside its body. What is the average strength of the electric ﬁeld in V/m inside the body of a 10cm wide eel?
*Friday, February 21, 2014 at 5:50am*

**math **

the school bands sells carnations on Valentine's day for $2 each. They buy the carnations from a florist for $0.50 each , plus $16 delivery charge . how will i put this in a system of equation .
*Friday, February 21, 2014 at 12:22am*

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