Friday

December 19, 2014

December 19, 2014

Number of results: 71,662

**Physics**

Need help with a question! I worked out A (assuming its right) which leads to B. A) C=1.03x10^-4 uF, A=2.5mm^2, d=0.75um B) If the voltage across the membrane is delta V= 75mV, what is the charge +_Q on each surface A? thanks!
*May 7, 2014 by Son*

**earht science **

1. How did planetesmals form planets? (1 point) A. They broke apart into smaller chunks. B. They collided and stuck together.** C. They cooled and pulled ice together. D. They began to rotate. 2. Which parts of the sun’s atmosphere become visible during a total solar eclipse...
*October 15, 2014 by could someone cheack these please?*

**Chemistry **

In the equation Q = mc(deltaT), I learned that Q means heat transfer. Is it the heat transfer from the system to the surroundings, i.e. the system loses/absorbs heat or is it from the surroundings to the system? A couple of places on the Internet say that Q is the heat energy ...
*March 4, 2013 by a Canadian*

**physics**

For a class demonstration, your physics instructor pours 1.16 kg of steam at 100.0°C over 4.69 kg of ice at 0.0°C and allows the system to reach equilibrium. He is then going to measure the temperature of the system. While the system reaches equilibrium, you are given the ...
*April 5, 2011 by please help me*

**Chemistry**

I think I get ionic compounds now. I'm just a bit unsure about my answers for these ones. 4. The cation is Au^3+ and the anion was SiO3subscript^-2. For the compound, I wrote (Au subscript2)subscript SiOsubscript3. Is this correct? Would it be called Gold Silicate then? 5. Fe^...
*March 8, 2009 by Nelle*

**College Physics**

A solenoid is wound with 290 turns per centimeter. An outer layer of insulated wire with 200 turns per centimeter is wound over the solenoid's first layer of wire. When the solenoid is operating, the inner coil carries a current of 10 A and the outer coil carries a current of ...
*February 19, 2010 by Lanise*

**college Algebra**

Write the system as a matrix and solve it by Gauss-Jordan elimination. (If the system is inconsistent, enter INCONSISTENT. If the system has infinitely many solutions, show a general solution in terms of x, y, or z.) x + 2y − z = 5 2x − y + z = 2 3x − 4y + 3z...
*December 15, 2013 by Dee*

**Math **

If I have a square and I draw two lines across the middle that interestect what would be the interior angles of that intersection. I know the square itself is 360 degrees and the inner corners are all 45 degrees. I am not sure how to calculate the interior ones. ex Suppose ...
*February 1, 2010 by none*

**Physics**

An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of fragments will contitnue to ...
*April 1, 2011 by Celine*

**Physiology**

Which structures of the inner ear would be activated by a somersault? A cartwheel? By fast acceleration in a race car?
*June 2, 2011 by Paige*

**Physiology**

Which structures of the inner ear would be activated by a somersault? By a cartwheel? By fast acceleration in a race car?
*February 25, 2012 by Anonymous*

**calculus**

P2 has a mysterious inner product * for which {x+4, 3x-5} is an orthonormal basis. IS there enough information to tell what is the length of 1? If so, compute it. If not say why not.
*April 13, 2012 by Scott*

**calculus**

P2 has a mysterious inner product * for which {x+4, 3x-5} is an orthonormal basis. IS there enough information to tell what is the length of 1? If so, compute it. If not say why not.
*April 13, 2012 by Scott*

**Linear Algebra**

Vector in Space-Directions and Magnitudes Let a, b, c, d, e, & f be vectors such that <a,b>=6, <a,c>=6, <a,c>=-4, <b,c>=7, b+c=d, -8a+8b=e, -4b+2c+f compute the following inner product: <b,a>=__ <a,d>=__ <e,c>=__ <a,f>=__
*February 22, 2014 by lyndirosies*

**Health**

What can typically cause a person’s muscles to become tense? A. Inner peace B. Meditation C. Stress D. All of the above C?
*October 30, 2014 by Night*

**physics**

In figure p4.36, m1 = 10kg and m2 = 4.0kg. the coefficient of static friction between m1 and the horizontal surface is 0.50, and the coefficient of kinetic friction is 0.30. (a) if the system is released from rest, what will its acceleration be? (b) if the system is set in ...
*March 21, 2012 by riel*

**Biology**

I need to make a cell membrane model out of a tissue box. Can you help me? I need ideas and more information about it.
*November 12, 2012 by Adriana *

**math**

A water system of 2 in.(inside diameter) pipe, having a length of 1/4 mile, is to be flushed with a volume of water equal to twice that contained in the system. how much water (gallons) must be flushed through the system? (note: one cubic foot=7.481gal.)
*February 11, 2013 by Wilfredo*

**Math**

I have to make two equations with the two integers {9, -3} and {2, 4}. The equations have to be done by the additon/ subtraction method and they have to become the solutions to a system, however, I do not know how to do that. Please help.
*June 11, 2011 by Tangie *

**BIOO**

why is there no production of ATP when detergent is treated in a test tube with mitochondria? in Aerobic and anaerobic respiration what is the final metabolic breakdown of molecule? 1 pyruvic acid 2 acetyl coenzyme A 3 citric acid 4 reduced coenzyme FADH2 5) ATP PLEASSEEEEEEEE...
*March 17, 2011 by sabrina*

**Biology**

why is there no production of ATP when detergent is treated in a test tube with mitochondria? in Aerobic and anaerobic respiration what is the final metabolic breakdown of molecule? 1 pyruvic acid 2 acetyl coenzyme A 3 citric acid 4 reduced coenzyme FADH2 5) ATP PLEASSEEEEEEEE...
*March 17, 2011 by sabrina*

**Biology**

Which one of the following organelles would be especially abundant in the pancreatic cells that produce digestive enzymes? A. rough endoplasmic reticulum B. smooth endoplasmic reticulum C. lysosomes D. microfilaments E. mitochondria Apparently the answer is not lysosomes, so ...
*December 11, 2011 by Anonymous*

**Math**

Hey I need some help in 6th grade geometry. I need to find some random facts about the Metric system and the Coustomary system so that I can create a double bouble map on them. Not only did I need facts on them sepratley I also need facts on what they have in common.
*February 28, 2011 by friend*

**political science**

the system of government in the state of CA can be described as : a.unitary system b.federal system 18).the constitution grants state governments: a. enumerated powers c.enumerated and defined powers
*May 22, 2012 by micah*

**Harvard Referencing, help please!**

Hey, I have here Clinical Protocols in front of me from one of the hospitals. I'm writing up an assignment and need to reference some parts of the protocol. The system that we use in college is Harvard Referencing system but I never referenced protocols before. Any tips? Would...
*July 14, 2012 by Carla*

**Physics...help please!**

An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of fragments will contitnue to ...
*March 31, 2011 by Celine*

**Physics...help please!**

An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of fragments will contitnue to ...
*April 1, 2011 by Celine*

**Physics (please help!!!!)**

An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of fragments will contitnue to ...
*April 1, 2011 by Celine*

**Science**

Different species of plants have structure/characteristics that allow them to adapt to their environment. What is this called?
*January 11, 2011 by Thanks*

**Science**

Different species of plants have structure/characteristics that allow them to adapt to their environment. What is this called
*January 11, 2011 by Tina*

**alegebra**

Solve the system of equations by graphing. Then classift the system as consistent or inconsistent and the equations as dependent or independent. 3x-y=14 3x+4y=-26 What is the solution of the system of equations? Type an ordered pair.N for no solution R for the solution if real...
*March 23, 2008 by anaya*

**Anthropology**

If a friend were to say, “ He’s the president of the college” the term “president” would refer to an: a)status b)role c)social situation d)social relationship e)social interaction a group ranked in a system of social stratification into which member are born for life is called...
*December 15, 2011 by TAYLOR M B*

**physics**

which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and an equivalent amount...
*June 24, 2009 by matt*

**Physics**

A system undergoes a two-step process. In the first step, the internal energy of the system increases by 368 J when 144 J of work is done on the system. In the second step, the internal energy of the system increases by 24 J when 248 J of work is done on the system. (a) For ...
*April 27, 2008 by Sally*

**College Algebra**

Solve the system of equations using matrices. If system has no solution say its inconsistent. 6x + y = 5 3x - y + z - w = 8 z + w = 2 Solve the system of equations using Cramers Rule if applicable. 4x + 2y = 8/5 5x - 5y = 5
*September 13, 2009 by coried*

**Law**

What are the advantages and disadvantages of the adversarial system? To me, one has to compare it to a standard. What alternative system is there? I will be happy to critique your thinking. One major advantage is that the adversarial system depends on advocates, and often it ...
*January 23, 2007 by Anonymous*

**BIOLOGY**

what would happen if the cell plasma membrane was hydrophilic? how would this affect molecular movement?? The links didn't answer my question...thanks Sra but they didn't help
*November 27, 2008 by kimora*

**Anatomy and Physiology**

What process describes how a signal travels from one end of a neuron to the other end? A. Membrane excitability B. Neurotransmitter release
*February 21, 2009 by Bailey*

**social studies **

which of the following statements about the state executive branch system of departments and agencies are true? A.The system is comparable in purpose to the legislative committee system in many ways. B.All state agency heads are constitutional officers. C.All agency heads are ...
*January 23, 2014 by Katey*

**physics**

I am to measure the deflection by contructing a post and lintel system using the dowels I have (with different diameters, which will be my variables). This is a system to measure the deflection under a load. I want to create a chart to present my results, but I don't know what...
*December 2, 2006 by Jan*

**Biology**

Which of the following will happen if mRNA fails to be translated? A The cell's nucleus will produce more chromatin. B. Ribosomes will not be able to create protein. C. Mitochondria will release ATP. D. The cell will produce more mRNA I think it's B
*July 27, 2014 by J*

**Algebra - solving linear equations w/ substitution**

The question in the book reads: "Suppose you try to solve a system of linear equations using substitution and get this result. How many solutions does each system have?" 1)x=-2 2)y=12 3)6=x 4)-8=-8 5)7=y 6)5=3 I understand #3 and #6, but I do not understand how to know how ...
*March 19, 2007 by Samantha*

**Calculus**

Find the area of the region enclosed by the inner loop of the curve. r = 5 + 10sin(θ) Any help would be greatly appreciated!!!
*April 4, 2011 by Julie*

**statistics**

In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 87, 57, 71, 68, 65, 77, 67, 66. What are the inner fences? What is the coefficient of variation?
*June 27, 2012 by James*

**morpheme vs phoneme**

A prefix such as in the word unhappy, can be called a? My answer was a morpheme but can't it also be called a phoneme?
*June 9, 2013 by Jim Collum*

**MATH HELP**

The south edmonton pet shop has several parrots and dogs for sale. There are a total of 24 heads and 82 legs in the display cages. A) Write a system of linear equations to represent the number of parrots, p, and the number of dogs, d, for sale. p+d = 24 2p+4d = 82 B) Determine...
*January 10, 2011 by Anonymous*

**HISTORY!! help plz and thannks**

what are protective tariffs and the factory system? I want to know what a factory system si because the question is Why was the factory system beneficial to Canadians. help plz and thank u!
*March 8, 2009 by beecca*

**Math**

My math teacher said to use the FOIL (First Outer Inner Last) property to simplify these quadratic equations I have made from looking at two parabolas. Here are my equations & how would you use the FOIL property on each of the equations and also can someone help me with ...
*December 4, 2014 by Alex*

**English**

Could you please recommend me a site where students can learn how to write cohesive and grammatically correct paragraphs? They are asked to write ten-line paragraphs on each of the literary and historical topic dealt with in their book but their grammar is very poor and don't ...
*October 16, 2011 by Henry*

**physics**

A massless rod of length 1.00 m has a 2.00-kg mass attached to one end and a 3.00-kg mass attached to the other. The system rotates about a fixed axis perpendicular to the rod that passes through the rod 30.0 cm from the end with the 3.00-kg mass attached. The kinetic energy ...
*June 24, 2012 by tuni*

**7th grade science**

1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point) genotype; phenotype genome...
*January 16, 2013 by Delilah*

**math **

Create a linear system to model this situation. Then use substitution to solve the linear system to solve the problem. - Bobbie has been saving dimes & quarters to buy a new toy. She has a total of 28 dimes and quarters, with a value of $4.30. How many of each type of coin ...
*June 11, 2013 by trixie*

**Intermediate Algebra**

Solve the system of equations by graphing. Then classify the system. f(x)=x+1 g(x)=-8x+10 What is the solution of the system? a)The solution is___? b)There are infinitely many solutions c)There is no solution Is the system consistent or inconsistent? a)inconsistent b)...
*February 16, 2014 by Student5*

**Intermediate Algebra**

Solve the system of equations by graphing. Then classify the system. y=-x-13 5x-4y=-20 What is the solution of the system? a)The solution is___? b)There are infinitely many solutions c)There is no solution Is the system consistent or inconsistent? a)inconsistent b)consistent ...
*February 16, 2014 by Student5*

**math**

Solve the system of equations by graphing. Then classify the system? y= -x -11 4x -3y=-2 What is the solution of the system? (Type an ordered pair. Type N if there is no solution. Type R if the solution is all real numbers.)
*June 16, 2009 by micheal*

**math**

Solve the system of equations by graphing. Then Classify the system? 4u+v=1 4u=v+7 What is the solution of the system? (Type an ordered pair. Type N if there is no solution. Type R if the solution is all real numbers.)
*June 16, 2009 by micheal*

**Psy.**

From the standpoint of social and cultural psychologists: A. few societies have changed from warlike to peaceful and vice versa. B. outbreaks of horrifying violence are usually the result of inner aggressive drives and the sheer evilness of the enemy. C. all human beings and ...
*December 24, 2013 by Anonymous*

**Science**

What is a cell wall or cell membrane?
*February 5, 2009 by Angelica*

**Algebra Multiple choice revised!! HELP**

I have a few questions I need help with! Please explain if my answer was not right how you got to it. I got 1.) B 2.) A 3.) C 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give the solution in ...
*March 28, 2013 by Kris*

**Algebra 2 Helpp :(**

QUESTIONS (vvv) (1) Solve the system by subsitution 2x + y = -11 3 - 4y = 11 (2) Solve the system by elimination 2x + 6 = -12 5x - 5y = 10 (3) What is the solution of the following system? -3x - 2y = -12 9x + 6y = -9 (4) What is the solution of the following system? x - y = 11...
*October 23, 2012 by Robert*

**buss/stats**

what is it called when all the items in the population have the same chance of being selected for the sample?
*October 8, 2011 by Tim*

**science **

The total energy of motion in the molecules of a substance is called? ?is the average amount of energy of motion in the molecules of a substance. A ? Is a thin glass tube with a bulb on one end that contains a liquid usually mercury or a colored alcohol. The energy transferred...
*October 8, 2014 by emma*

**SCI 241**

i need to know the path food follows through the digestive system and how digetion occurs in eachof the following parts of the digestive system.. I need to onclude descriptions of other organs or componentsnof the digestive system including: large intestine Mouth,small ...
*April 4, 2008 by Dawn*

**Nutrition**

in 200 to 300 words, the path food follows through the digestive system and how digestion occurs in each of the following parts of the digestive system. Be sure to include descriptions of other organs or components of the digestive system, including: o Large intestine o Mouth ...
*September 25, 2008 by Bev*

**7th grade science ASAP**

1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point) genotype; phenotype genome...
*January 16, 2013 by Delilah*

**operating system**

a. What is the name and version number of the operating system? Windows XP Professional Service Pack 2 b. What kind of user-interface is used? window XP theme c. Can you see an indication that this operating system provides a job management function? If so, provide a ...
*October 19, 2008 by denise*

**Theory of Vibration**

shows a single degree of freedom spring-mass system having a forced vibration and damper, starting from the second Newton’s law of motion, show that the extension of the system is given by X=Epg wnt sin(wd t + y). Also explain the conditions of the system when the damping ...
*August 30, 2008 by Apanpa2*

**english/11th grade**

He responds whenever he is called. In this sentence the Adverb clause is: whenever he is called and the Subordinating conjunction is: whenever what is the word modified? how can i figure out which word it is?
*November 17, 2011 by Amy*

**Calculus**

Evaluate the integral by changing to spherical coordinates. The outer boundaries are from 0 to 1. The middle one goes from -sqrt(1-x^2) to sqrt(1-x^2) The inner one goes from -sqrt(1-x^2-z^) to sqrt(1-x^2-z^) for 1/sqrt(x^2+y^2+z^2) dydzdx I don't understand how to get the ...
*December 16, 2012 by Mackenzie*

**Calculus**

Evaluate the integral by changing to spherical coordinates. The outer boundaries are from 0 to 1. The middle one goes from -sqrt(1-x^2) to sqrt(1-x^2) The inner one goes from -sqrt(1-x^2-z^) to sqrt(1-x^2-z^) for 1/sqrt(x^2+y^2+z^2) dydzdx I don't understand how to get the ...
*December 16, 2012 by Mackenzie*

**Calculus**

Evaluate the integral by changing to spherical coordinates. The outer boundaries are from 0 to 1. The middle one goes from -sqrt(1-x^2) to sqrt(1-x^2) The inner one goes from -sqrt(1-x^2-z^) to sqrt(1-x^2-z^) for 1/sqrt(x^2+y^2+z^2) dydzdx I don't understand how to get the ...
*December 16, 2012 by Mackenzie*

**Calculus**

Evaluate the integral by changing to spherical coordinates. The outer boundaries are from 0 to 1. The middle one goes from -sqrt(1-x^2) to sqrt(1-x^2) The inner one goes from -sqrt(1-x^2-z^) to sqrt(1-x^2-z^) for 1/sqrt(x^2+y^2+z^2) dydzdx I don't understand how to get the ...
*December 17, 2012 by Mackenzie*

**operations management/supply chain**

Suppose you are managing a service system in which customers arrive at a rate of two per minute according to a Poisson process. You are investing in a single machine that provides the service and does so with exponential service time. Your objective is that the average time a ...
*December 19, 2006 by joe*

**Pre-Calculus**

Write the standard form of the equation of the circle that passes through the points at (4,5), (-2,3), (-4,-3). I have gotten to the point of the system of equations but do not know know how to proceed. I have: 4D + 5E + F + 41 =0 -2D + 3E + F + 13 =0 -4D - 3E + F + 25 =0 Any ...
*September 1, 2008 by Lucy*

**Biology check my answers**

Please check to see if my answers are right: we need to list the 6 kingdoms with their characteristics and an example each Eubacteria -"true bacteria": bacilli Monera- prokaryote ,: Cyanobacteria Protista- single cell, true nucleus :amoeba Plantae- photosynthetic :roses Fungi...
*October 18, 2014 by Grey*

**Algebra question**

When you solve a system of equations by the substitution method, how do you determine whether the system of equations is dependent? If your variables disappear as you simplify, and you end up with 0=0 (or k=k) the system is dependent. (really just the same line, one equation ...
*August 14, 2007 by Nik*

**physics**

Two spherical shells have a common center. A -2.00 × 10-6 C charge is spread uniformly over the inner shell, which has a radius of 0.050 m. A +5.50 × 10-6 C charge is spread uniformly over the outer shell, which has a radius of 0.15 m.
*February 25, 2013 by sam*

**Chemistry**

What is true about a system in chemical equilibrium? No reactants remain in the system. There are no products in the system. The amount of product equals the amount of reactant. The amount of reactant changes, but over time remains about the same.
*April 23, 2012 by Viola*

**persuasive letter (IGNORE PREVIOUS-This 1 is FINAL**

This one is updated one. I am sorry for trouble. I have to write to Expedia for their mistake on reserving my car rental at LA. I want a free car rental voucher. -------------------------------- Tajinder Singh 392 Hinter Wayne Drive, Nashville, TN 52312 July 09, 2007 Mr. Bill ...
*July 16, 2007 by singh*

**Physics**

A long coaxial cable consists of two concentric conductors. The inner conductor is a cylinder with radius R_1, and it carries a current I_0 uniformly distributed over its cross section. The outer conductor is a cylindrical shell with inner radius R_2 and outer radius R_3. It ...
*April 5, 2013 by Phy*

**PHYSICS HELP**

If the external world does work on the system, the quantity of work is negative. Is negative right or is it positive? If you are writing the system equations, the work done by external forces will be a + number, indicating an increase of energy to the system.
*January 10, 2007 by Pat*

**Algebra 1**

How many solutions does the system of equations have? 3x+12y=20 Y=-1/4x+5/3 (1 point) One*** Two Infinitely many None Jack has $55, and Emily has $28. Jack is saving $4 per day, and Emily is saving $13 per day. After how many days will Jack and Emily have the same amount of ...
*January 27, 2014 by Gabby*

**BIOO pleasee help u guys are angellss!!!**

why is there no production of ATP when detergent is treated in a test tube with mitochondria? in Aerobic and anaerobic respiration what is the final metabolic breakdown of molecule? 1 pyruvic acid 2 acetyl coenzyme A 3 citric acid 4 reduced coenzyme FADH2 5) ATP PLEASSEEEEEEEE...
*March 17, 2011 by sabrina*

**Geometry :(**

this maths problem is wrecking my head.... 1.find the points of interesction of the line L and the circle k in the following L:x-2y=0 K:X Squared + y squared=25 I would solve both equations for y, and then you'll have a system with two equations and two variables: y = x/2 y...
*September 9, 2006 by emer*

**Physics - Conservation of Angular Momentum**

a man is standing on the center of a platform that is rotating without friction. his arms are outstretched holding a brick in each hand. the rotational inertia of the system consists of the man, bricks, and platform about the central vertical axis of the platform. by moving ...
*April 8, 2007 by COFFEE*

**math**

Solve the system by graphing. Then classify the system.? 6x-y=50 6x+7y=-14 What is the solution of the system? (type an ordered pair. Type N if there is no solution. Type R if the solution is all real numbers)
*June 16, 2009 by micheal*

**Social Studies**

1. The president of the United States is elected by the electoral college. What type of system is this? 2. In ancient Athens (Greece) tribes and generals took turns at power. This is an example of what type of political system? 3.What type of political system is headed by ...
*February 26, 2009 by Laura*

**Physics helppp**

Which of the following statements are TRUE? Select all that apply. An isolated system is one in which objects inside the system are not influenced by any forces from outside the system. The mechanical energy of a pendulum bob is maximized at the bottom of its arc. Mechanical ...
*October 23, 2012 by member of physics*

**Biology**

The cell membrane is a highly selective barrier that controls the movement of substances in and out of the cell. In fact, polar molecules are unable to go across unless
*January 4, 2014 by La'Shay*

**management information system**

hi theres a bunch of wrong answers in my quiz earlier and i want to know the correct answer, so please help, and this not not my homework..thanks 1.amount of time and attention required is a typical___measure of product performance a. cost b.quality(my answer wrong) c. ...
*August 1, 2011 by digital city*

**Earth Science**

need help plzz .... I did some but I would like someone to double check them too 1. How did planetesmals form planets? (1 point) A. They broke apart into smaller chunks. B. They collided and stuck together. C. They cooled and pulled ice together. D. They began to rotate. 2. ...
*November 8, 2013 by Mara*

**Physics**

How fast does a rocket need to be going to break free of Earth's gravity? How fast would it have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is ...
*September 29, 2011 by Kaitlyn*

**Physics**

How fast does a rocket need to be going to break free of Earth's gravity? How fast would it have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is ...
*September 30, 2011 by Kaitlyn*

**chemistry**

I have two questions regarding enthalpy of reactions: 1.) Care must be taken when dissolving NaOH pellets in water because the temp. can rise dramatically. Taking NaOH as system, what can be deduced about the signs of the entropy of system and surroundings? Am I correct in ...
*May 2, 2014 by Rebecca*

**Algebra Concept check**

1. Anna has 12 bills in her wallet, some $5 and some $10. The total value of the bills is $100. How many of each bill does Anna have? 2. Tripling the greater of two consecutive even integers gives the same result as subtracting 10 from the lesser even integer. What are the ...
*May 12, 2010 by Anonymous*

**medical billing**

for medicaid cases there is no assignment of benefits unless the patient has other insurance in addition to medical. true or false 2. a two or three form that incorporates a bill, insurance form,and routing document used both computer and paper based system is called an ...
*April 23, 2011 by christina*

**Goverment**

Wgat factors have combined to make today political campaigns as person and individual as they have become? freedom of speech? different perspectives of an issue? Your question is vague. Exactly what is meant by "today's [<~~note the possessive form] political campaigns"? ...
*March 14, 2007 by jenny*

**math**

Derivatives are usually not taught in 5th grade. That is what your question is about: Rates of change. Complete the following statements with the correct words Note: Correct spelling is important. If s(t) is a distance (or height or position) function, then s'(t) would be ...
*February 19, 2007 by drwls*

**Calculus Help**

I have looked high and low to figure out how to start this question. I have no clue! Any help would be great!! Rainbows are formed when light strikes raindrops and is reflected and refracted. The Law of Refraction states that (sin alpha)/(sin beta) = k, where k equals 1.33 (...
*June 30, 2013 by Ryan*

**Chem**

Part A : This is the first law of thermodynamics question. case 1 - the system expands and the surroundings get hotter case 2 - the system expands and the surroundgins get colder case 3 - the system contracts and the surroundings get hotter case 4 - the system contracts and ...
*November 4, 2010 by AY*

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