Saturday
March 15, 2014

# Homework Help: Computers: Operating Systems

Recent Homework Questions About Operating Systems

Algebra
What is the value of x in the solution of this system? -3x-y+2z = 7 2y+z= -5 3x+6y= -21 4 2 1 3
Friday, October 4, 2013 at 12:26pm

A U
Question : <11{1[4(23)23]}> People have claimed that Jamie’s paintings have given them the blues. Clearly this cannot be entirely correct, since many of Jamie’s paintings contain no blue at all. The argument above is flawed because the author: Student Answer: ...
Friday, October 4, 2013 at 12:48am

Thermodynamics
The initial state consists of a closed system containing one mole of water (liquid) at 85°C and 1 atmosphere pressure. The immediate surroundings are also at 85°C and 1 atmosphere pressure. The change in state is described as this one mole of liquid forming vapor at 85...
Thursday, October 3, 2013 at 3:33pm

physics
In the apparatus shown in the figure (Figure 1) , m1 = 10kg and the coefficients of static and kinetic friction between m1 and the table are 0.69 and 0.32, respectively. Part A What mass of m2 will just barely set the system in motion?
Thursday, October 3, 2013 at 3:13pm

Electricity and Electronics
1. A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how many turns are in the secondary? A. 8 B. 690 C. 72 D. 1,653 2. To use your left hand to determine the direction of the voltage developed in a ...
Thursday, October 3, 2013 at 1:47pm

Health
Which of the following lipoproteins carries dietary fat that is absorbed into the digestive system to the liver and body cells for use? a. Chylomicrons b. High density lipoprotein c. Micelle d. Low density lipoproteins I think its A is that correct?
Wednesday, October 2, 2013 at 7:23pm

Science- Ms. Sue or DrBob222?
A student measures a rectangular room to be 20.0 m X 17.16 m. Which of the numbers below represents the room’s area with the correct number of significant figures? a. 340 m^2 b. 343 m^2 c. 343.2 m^2 d. 343.20 m^2 B Which component of the technological system is activated ...
Wednesday, October 2, 2013 at 3:48pm

Science
A student measures a rectangular room to be 20.0 m X 17.16 m. Which of the numbers below represents the room’s area with the correct number of significant figures? a. 340 m^2 b. 343 m^2 c. 343.2 m^2 d. 343.20 m^2 B Which component of the technological system is activated ...
Wednesday, October 2, 2013 at 12:32pm

Science
Why do scientists use models of natural systems? a. Scientists use models of natural systems because these systems are often too large, too small, or too complex to study directly. b. Scientists use models of natural systems because they like to use art in science. c. ...
Wednesday, October 2, 2013 at 12:01pm

Chemistry
qp = delta H Work done by the surroundings on the system is + dE = q+w.
Wednesday, October 2, 2013 at 1:12am

History!!
Here ya go! :) don't worry about the map. because i can't get it to copy! 1. Which of the following describes the role of an anthropologist? (1 point) a person who studies the origin and development of humans*** a person who searches for artifacts from prehistoric ...
Tuesday, October 1, 2013 at 4:02pm

History!!
PLEASE PLEASE PLEASE HELP ME!! <3 1. Which of the following describes the role of an anthropologist? (1 point) a person who studies the origin and development of humans*** a person who searches for artifacts from prehistoric people a person who excavates remains from early ...
Tuesday, October 1, 2013 at 2:39pm

History!
***IGNORE THE CHARTS/GRAPH QUESTIONS!! UNLESS YOU KNOW THE ANSWER OR HAVE SEEN THE CHARTS! THANKS!! :) *** For whom was South Carolina named? (1 point) Queen Caroline King Charles I**** King Charles II Queen Elizabeth 2. What is an important reason to study the history of a ...
Tuesday, October 1, 2013 at 9:49am

physics
A block of mass m1 = 13.5 kg rests on a wedge of angle θ = 27∘ placed over a table.. An inextensible string is attached to Block M1, passes over a frictionless pulley at the top of the wedge, and is then attached to another block of mass M2 = 3 kg. The coefficient ...
Tuesday, October 1, 2013 at 2:15am

Many plans were tried, and the closest we came was to label some products, like foods, in both units. EDITORIAL: Tonight Congress may refuse to pass a budget, thus shutting down the government. If we can't even support a health care program that may be a step toward the ...
Monday, September 30, 2013 at 8:18pm

Again --  It would cost businesses tons of money to switch to the metric system. The American public have been apathetic, at best, to using metrics.
Monday, September 30, 2013 at 8:06pm

Also why don't we accept the Metric System as it in now used in other countries?
Monday, September 30, 2013 at 7:57pm

Science
Which statement best describes the relationship between science and technology? A. The goal of science is to gain an understanding of the natural world, while the goal of technology is to use that understanding to improve people's lives. B. The goal of science is to create...
Monday, September 30, 2013 at 7:54pm

AP Chemistry
What would be the final temperature of the system if 20 g of lead at 100◦C are dropped into 20 g of water at 30 ◦C in an insulated container?
Monday, September 30, 2013 at 4:34pm

Math (College Pre-Cal)
The exact conversion between the English measurement system and the metric system is given by the equation 1 inch= 2.54 cm. Let f(x) be the number of miles in x meters. Find a formula for f(x). Give an exact answer.
Sunday, September 29, 2013 at 11:06pm

Math
Solve the system by substitution or elimination. x^2 + 2y^2 = 8 x^2 - y^2 = 1
Sunday, September 29, 2013 at 10:26pm

delftx
We are going to build a PV system on a roof of 10m2, and we have two possible PV modules: (1) A first generation module with efficiency η=17% and cost of 0.80€/Wp. (2) A second generation PV module with efficiency η=10% and cost of 0.40€/Wp. The non-modular...
Sunday, September 29, 2013 at 9:54pm

science
which component of the technological system is achieved when your camera takes a photograph ? a) input b) feedback c) goal d) constraint
Sunday, September 29, 2013 at 8:23pm

Principles of Management
Marie is deciding how much funding each of the departments she managers will receive next year. She is operating in the ___________ role.
Saturday, September 28, 2013 at 12:00pm

physics
In the system shown in the figure below, a horizontal force Fvecx acts on the 7.00 kg object (m1). The horizontal surface is frictionless. (a) For what values of Fx does the 1.00 kg object (m2) accelerate upward?
Friday, September 27, 2013 at 6:17pm

Economics
Suppose that there are 1,000 hot-pretzel stands operating in Toronto. Each stand has the usual U-shaped average total cost curve. Both the market demand curve and the supply curve for pretzels are linear, and the market for pretzels is in long-run competitive equilibrium. a) ...
Friday, September 27, 2013 at 11:20am

Chemistry
At room temperature, 80.0 ml of 0.125 M AgNO3(aq) and 20.0 ml of 0.500 M Fe(NO3)2(aq) are mixed together, generating the following equilibrium system Ag+ (aq) + Fe2+(aq) Ag(s) + Fe3+(aq). At equilibrium, the concentration of Fe3+ is 0.00505 M. (a) (4 pts) Calculate the initial...
Friday, September 27, 2013 at 12:54am

Physics
A plane, diving with constant speed at an angle of 52.0° with the vertical, releases a projectile at an altitude of 790 m. The projectile hits the ground 6.00 s after release. (Assume a coordinate system in which the airplane is moving in the positive horizontal direction...
Thursday, September 26, 2013 at 8:00pm

Physics
A plane, diving with constant speed at an angle of 52.0° with the vertical, releases a projectile at an altitude of 790 m. The projectile hits the ground 6.00 s after release. (Assume a coordinate system in which the airplane is moving in the positive horizontal direction...
Thursday, September 26, 2013 at 7:21pm

Science
1) Which of the following is a valid reason why a scientist might reject a scientific theory? (1point) Some people disagree with it. It covers too broad a topic. New evidence contradicts it.*** It is too old. 2) A scientific hypothesis must be (1point) Correct Able to be ...
Thursday, September 26, 2013 at 2:35pm

I just cannot figure out if these answers are correct or not. Can you please help me? 78. If the sound system hadn’t failed, last night’s show would have been better. This is a correct sentence using the 1st conditional form. x This is a correct sentence using the ...
Wednesday, September 25, 2013 at 10:13pm

Geography (Ms, Sue)
How might a road system have helped to hold the Inca empire together? A: As the Inca empire was mainly located in the Andes mountains, a road system might have helped to hold the Inca empire together as it crossed mountains and deserts to link the empire.
Wednesday, September 25, 2013 at 5:43pm

Science
Know how to use safety shower. Know how to use eye wash system. Know where the nearest first aid kit is located. No smoking. Use fume hood when appropriate.
Wednesday, September 25, 2013 at 4:55pm

Math
(Having used the metric system for the last 50 years, I had to recall all that gallon, pints and quart stuff) change all to pints 3quarts = 6 pints 1 1/2 gallons = 12 pints let the amount of orange juice she used be x pints 2 + 6 + x = 12 x = 4 pints she used 4 pints of orange...
Tuesday, September 24, 2013 at 9:08pm

Science!
1) Which statement best describes the relationship between science and technology? (1point) The goal of science is to gain an understanding of the natural world, while the goal of technology is to use that understanding to improve people’s lives.*** The goal of science is...
Tuesday, September 24, 2013 at 8:16pm

Science!
1) Which statement best describes the relationship between science and technology? (1point) The goal of science is to gain an understanding of the natural world, while the goal of technology is to use that understanding to improve people’s lives.*** The goal of science is...
Tuesday, September 24, 2013 at 7:49pm

Chemistry
I assume this is O2 at 0C and O2 at 100 C and it ISN'T dissolved in H2O. Use PV = nRT. I would substitute P in atm (convert bar to atm), R = 0.08206 L*atm/mol*K and T = 273. Solve for n. Do the same for the 373 system and solve for n. Subtract to find the difference and ...
Tuesday, September 24, 2013 at 6:10pm

language
1.which factor is most helpful in helping technology to progress? a) unintended consequences b) a better understanding of the natural world c) risk-benefit analysis d)obsolete technologies 2. an oven is a technological system. which of the following describes into this system...
Tuesday, September 24, 2013 at 3:51pm

Mathematics
Anna burned 15 calories per minute running for x minutes and 10 calories per minute hiking for y minutes. She spent a total of 60 minutes running and hiking and burned 700 calories. The system of equations shown below can be used to determine how much time Anna spent on each ...
Tuesday, September 24, 2013 at 2:07pm

chemisry
What are the specializations of sanitary engineering? Drinking water supply Sewage Wastewater treatment 2) Name the different parts of the drinking water supply system? Production Storage Distribution 3) Which of the following three systems can be discerned when producing ...
Tuesday, September 24, 2013 at 11:55am

vector physics
Using the standard orthogonal unit vectors î and ĵ. Momentum of the system: 0.045*9.0 î - 0.145*7 ĵ kg∙m/s Magnitude: √((0.045*9.0)^2 + (0.145*7)^2) kg∙m/s Direction: angle measured off x-axis -arctan((0.145*7)/(0.045*9.0))
Monday, September 23, 2013 at 1:12am

physics
a golf ball of mass 0.045kg is moving in the x-direction with a speed of 9.0 m/s, and a baseball with mass 0.145kg is moving in a negative y-directionwith a speed of 7m/s. what are the magnitude and direction of the total momentum of the system consisting of the two balls?
Monday, September 23, 2013 at 12:08am

physics
A .436 kg mass is attached to a spring and executes simple harmonic motion with a period of .19s. The total energy of the system is 4.6 J. find force constant of the spring. Answer in units of N/m
Sunday, September 22, 2013 at 10:40pm

history/politics
http://politicalpartiesush.weebly.com/fe​deralists-vs-democratic-republicans.html​ http://edsitement.neh.gov/lesson-plan/fi​rst-american-party-system-federalists-an​d-democratic-republicans-platforms-they-​never-
Sunday, September 22, 2013 at 7:11pm

physics
A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's initial velocity and acceleration are v0x = +2.5 m/s and ax = +5.2 m/s2. The y components of the puck's initial velocity and acceleration are ...
Sunday, September 22, 2013 at 4:54pm

Science
Family Smith is interested in buying a solar energy system. After some search on internet they have found two different systems that they are considering. System A is a PV system based on multicrystalline silicon solar cells and System B is a PV system based on amorphous ...
Saturday, September 21, 2013 at 7:19pm

body system
high frequency? http://www.noiseandhealth.org/article.as​p?issn=1463-1741;year=2011;volume=13;iss​ue=54;spage=364;epage=370;aulast=Smedje
Saturday, September 21, 2013 at 3:18pm

body system
a 63 year old man has become progressively hard of hearing. hes a retired airplane maechanic. what kind of hearing loss is this man most likely to have
Saturday, September 21, 2013 at 2:58pm

Science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system is an example of a process? Turning on the switch is a process. The conversion of chemical ...
Friday, September 20, 2013 at 10:14am

English
Decide which of the two reasons offered in each instance will be more persuasive to the specified audience.Write out the implied warrant for each "because" clause and explain whether the specific audience will likely grant it or not. 1)Audience:people who advocate a ...
Thursday, September 19, 2013 at 10:46pm

Math
In 1990, the population of Cheyenne, Wyoming, was 73,142. By 2000, the population had increased to 81,607. Write and solve an equation to find, the increase in Cheyenne’s population from 1990 to 2000. Mercury’s surface temperature has a range of 600 digress. This ...
Thursday, September 19, 2013 at 10:41pm

Science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system us an example of a process? a. Turning on the switch is a process. b. The conversion of ...
Thursday, September 19, 2013 at 9:51pm

math
Find the ordered quintuplet (a,b,c,d,e) that satisfies the system of equations a+2b+3c+4d+5e=177, 2a+3b+4c+5d+e=154, 3a+4b+5c+d+2e=146, 4a+5b+c+2d+3e=138, 5a+b+2c+3d+4e=165 This a really hard questioon but don't give up, please.
Thursday, September 19, 2013 at 7:41pm

Science!
I rlly need to make sure these are correct. 3) Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system is an example of a process?(1point) Turning ...
Thursday, September 19, 2013 at 7:36pm

Science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system us an example of a process? a. Turning on the switch is a process. b. The conversion of ...
Thursday, September 19, 2013 at 7:05pm

Science
1) Why do scientists use models?(1point) Scientists use models to learn about things that are too small, too large, or to complex to observe directly. Scientists use models because doing so is always part of the scientific method. Scientists use models because they work ...
Thursday, September 19, 2013 at 6:51pm

Math
One advantage of the metric system is that its units of measure scale by multiples of 10. You just have to memorise the prefices. In this case "milli-" means 0.001 times. That is, there are 1000 milligrams to the gram. 1000 mg = 1 g 2000 mg = ___ g
Thursday, September 19, 2013 at 5:41pm

Geography
Climate regions are defined by their average temperature and their political system. Physical regions can be formed by mountains and oceans. I think those two but I'm not sure about the others
Thursday, September 19, 2013 at 3:52pm

Geography
Which statements describe the geographic theme of regions? Select all that apply. Different types of regions have little or no effect upon each other. Climate regions are defined by their average temperature and their political system. Physical regions can be formed by ...
Thursday, September 19, 2013 at 3:43pm

science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system us an example of a process? a. Turning on the switch is a process. b. The conversion of ...
Thursday, September 19, 2013 at 12:53pm

science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system us an example of a process? a. Turning on the switch is a process. b. The conversion of ...
Thursday, September 19, 2013 at 11:05am

algebra
Solve the system by substitution: -4.5x-2y=-12.15 3.25x-y=-0.75
Wednesday, September 18, 2013 at 3:26pm

INF103: Computer Literacy
Which of the following components was a significant development featured in the Macintosh LISA computer? (Points : 1) C Prompt Disk Operating System Graphical User Interface) Memory
Tuesday, September 17, 2013 at 12:18pm

physics
A .255 kg mass is attached to a spring and executes simple harmonic motion with a period of .56 s. The total energy of the system is 3.6 J. Find the force constant of the spring. Answer in units of N/m
Monday, September 16, 2013 at 7:35pm

FIN
Question 2 Archer Daniels Midland Company is considering buying a new farm that it plans to operate for 10 years. The farm will require an initial investment of $12.00 million. This investment will consist of$2.00 million for land and $10.00 million for trucks and other ... Monday, September 16, 2013 at 10:53am Finance Question 2 Archer Daniels Midland Company is considering buying a new farm that it plans to operate for 10 years. The farm will require an initial investment of$12.00 million. This investment will consist of $2.00 million for land and$10.00 million for trucks and other ...
Monday, September 16, 2013 at 10:52am

maths
since s(0) = 0, b0=0 and s = t(b1+b2t) since s(1) = 0.6, b1+b2 = 0.6 since s(2) = 4.2, 2(b1+2b2) = 4.2 and we have the system b1+b2 = .6 b1+2b2 = 2.1 b2 = 1.5 b1 = -.9 s(t) = 1.5t^2 - 0.9t This correctly figures for t=0,1,2, but starts being off at t=3. You can make a parabola...
Monday, September 16, 2013 at 4:43am

physics
(a) What is the hot resistance of a 24 W light bulb that runs on 120 V AC? (b) If the bulb's operating temperature is 2700°C, what is its resistance at 2570°C?
Sunday, September 15, 2013 at 9:46pm

physics
(a) What is the hot resistance of a 24 W light bulb that runs on 120 V AC? (b) If the bulb's operating temperature is 2700°C, what is its resistance at 2570°C?
Sunday, September 15, 2013 at 8:03pm

Park University
The number of arrivals per period is distributed according to the Poisson with an expected value of 0.75 unit per period. The cost of waiting per unit per period is $3.20. The facility cost for serving one unit per period is$5.15. What expected service rate should be ...
Sunday, September 15, 2013 at 4:51pm

chemistry
Easy! Using Q = mc(delta) where delta = difference between final and initial temperature Given m = 47 kg Q = 3.40 X 10^2 kJ Since heat is being absorbed into the system, this is an endothermic reaction. c for water is 4.2 kJ/kg.C Substituting Q,m,c & initial temperature of ...
Sunday, September 15, 2013 at 1:32pm

Medical coding
Neoplasms are evaluated by a grading scale in a system called A. staging. B. malignancy. C. sequencing. D. morphology.
Sunday, September 15, 2013 at 10:10am

Math
Suppose that the service rate to a waiting line system is 10 customers per hour (exponentially distributed). Analyze how the average waiting time is expected to change as the arrival rate varies from two to ten customers per hour (exponentially distributed)
Saturday, September 14, 2013 at 5:17pm

college math
system of equations: solve the following system of operations using matrices (row operations) {5x + y + z + w = -5} {x - 2y + 2z -3w = -4}
Saturday, September 14, 2013 at 2:28pm

Capitalism
I agree with Ms. Sue. A "cure" for poverty is probably never going to happen. Remember that "capitalism" and "free enterprise" are pretty much the same thing, just different terms. Over my lifetime (since I started paying attention and voting, ...
Saturday, September 14, 2013 at 2:27pm

physics
A motorist traveling with constant speed of vc = 16.0 m/s passes a school-crossing corner, where the speed limit is 10 m/s. Just as the motorist passes, a police officer on a motorcycle stopped at the corner starts off in pursuit. The officer accelerates from rest at am = 2.67...
Saturday, September 14, 2013 at 10:43am

Quantum physics
how to find the state of the composite system in prob 2?? please ans
Saturday, September 14, 2013 at 5:57am

Quantum physics
how to find the state of the composite system in prob 2?? please ans
Saturday, September 14, 2013 at 5:56am

math ASAP
Find the point of intersection L1: r(t)= (-5 + 3t)i + (1+t)j L2= r(s) = (1+2s)i + (5-6s)j I know they are perpendicular, and the system of equations I think is t= 4/5 s =8/5 so how do I find the point of intersection
Saturday, September 14, 2013 at 12:01am

accounting
Outflow investing activities (note), inflow investing activities (land), and outflow operating activities (cash).
Friday, September 13, 2013 at 6:32pm

System Analyst and Design
c. Suggest several types of controls that might be used on the switchboard you plan to design. Explain why you chose each control, and create a storyboard that shows the switchboard layout.
Friday, September 13, 2013 at 3:27am

Chemistry
On an alien planet, volume is measured in units of smaugs (S) and odahviings (O), where 1 S = 2.25 O. By some weird coincidence, they use the exact same metric system that we use. Knowing this, how much is 500.0 O in units of kS
Thursday, September 12, 2013 at 10:39pm

physics
You are to make four straight-line moves over a flat desert floor, starting at the origin of an xy coordinate system and ending at the xy coordinates (-148 m, 66 m). The x component and y component of your moves are the following, respectively, in meters: (20 and 60), then (bx...
Thursday, September 12, 2013 at 6:55pm

Geography (Ms. Sue)
1). What three factors have contributed to the success of the American economy? 2). What are the geographic origins of some American musical styles? 3). What invention made life in the suburbs possible? My answers to these questions are the following: 1). Available natural ...
Thursday, September 12, 2013 at 4:13pm

Science
1)Which of the following is a valid reason to study science?(1point) All employers require an in-depth knowledge of science. Carrying out scientific experiments is a requirement of everyday life. Most colleges require advanced science classes. Understanding basic science terms...
Thursday, September 12, 2013 at 11:46am

chem
Consider two identical iron nails: One nail is heated to 95 °C, the other is cooled to 15 °C. The two nails are placed in a coffee cup calorimeter and the system is allowed to come to thermal equilibrium. What is the final temperature of the two nails?
Thursday, September 12, 2013 at 10:18am

what economic system is best for crisas of epic popertion
Thursday, September 12, 2013 at 12:35am

Chemistry
You should be able to define the system. For burning natural gas you know it is exothermic (dH is -) and for molten wax solidifying you know it is exothermic (dH is -).
Wednesday, September 11, 2013 at 6:20pm

Chemistry
Define a system and state the significant the enthalpy change for the system. Explain your reasoning? A) natural gas burning in a furnace B) melted wax solidifying
Wednesday, September 11, 2013 at 6:03pm

algebra
{-3x - y= -10 { 4x - 4y = 8 Solve the system by graphing
Wednesday, September 11, 2013 at 3:20pm

BUSN
4. For this question, use the information for Sports Baseballs, Inc. Sports Baseballs, Inc. is a corporation that manufacturers and sells baseballs across several states in the Southeast. It had sales of \$2.7 million during the last year. Expenses were as follows: Cost of ...
Tuesday, September 10, 2013 at 9:51pm

mitx 8.01x Classical Mechanics
A motorist traveling with constant speed of vc = 17.000 m/s passes a school-crossing corner, where the speed limit is 10 m/s. Just as the motorist passes, a police officer on a motorcycle stopped at the corner starts off in pursuit. The officer accelerates from rest at am = 3....
Tuesday, September 10, 2013 at 7:16pm

mitx 8.01x Classical Mechanics
Vector A⃗ , in the first quadrant, has a magnitude |A⃗ |= 1.0 and is at an angle α = 40 ∘ with respect to the positive x-axis. Vector B⃗ , in the fourth quadrant, has a magnitude |B⃗ |= 2.5 and is at an angle β = 20.0 ∘ with ...
Tuesday, September 10, 2013 at 7:12pm

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 42 km away, 21° north of west, and the second team as 29 km away, 37° east of north. When the first team uses ...
Tuesday, September 10, 2013 at 1:08pm

Technology
A printer is a/an: Choose all which apply. a) input device b) output device c) data storage device d) operating system
Tuesday, September 10, 2013 at 12:15pm

Mathematics
Solve the following system of linear equations using the matrix inverse method. \begin{array}{ccc} 3x+2y&=&7 \\ 4x+3y&=&10\end{array}
Monday, September 9, 2013 at 8:39pm

ela
Our solar system Is a super gem. It has a great sun Its age is 4.6 billion.
Monday, September 9, 2013 at 5:31pm

ela
can someone help me think of a rhyme to remember the solar system was formed 4.6 billion years ago
Monday, September 9, 2013 at 5:28pm

ela
What is it you want to remember about the solar system?
Monday, September 9, 2013 at 5:06pm

ela
I need a rhyme to remember the solar system formed around 4.6 billion years ago ?
Monday, September 9, 2013 at 5:04pm

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