Thursday

September 18, 2014

September 18, 2014

**Recent Homework Questions About First Aid**

Post a New Question | Current Questions

**Biomechanics**

While pushing off against the starting blocks at the beginning of a race, Olympic swimming great Michael Phelps generates a force that increases linearly from 0 N to 800 N over the first 0.30 s, and then decreases steadily back to 0 N over the remaining 0.30 s (see the graph ...
*Sunday, April 6, 2014 at 11:22pm*

**Biomechanics**

Two ice skaters start out motionless in the center of an ice rink. They then push each other apart. The first skater (mass = 80 kg) moves to the right with a velocity of 2.5 m/s. The second skater (mass = 58 kg) moves to the left at some unknown speed. If we assume that the ...
*Sunday, April 6, 2014 at 11:21pm*

**Biology**

Can someone please tell me if I have the right answers? Pasteur's experiments led to which theory? A. biogenesis theory B. endosymbiont theory C. evolution theory D. spontaneous generation theory I think its A or D Scientists have fossil evidence for which idea for the ...
*Sunday, April 6, 2014 at 9:06pm*

**Physics**

Consider two masses that hang from an overhead beam. The first mass of 86.4 kg is attached to the beam using an ideal rope. The second mass of 20.8 kg is attached to the first mass with an ideal rope and hangs directly under the first mass. (a) Find the tension in the lower ...
*Sunday, April 6, 2014 at 8:44pm*

**algebra 2**

what is the sum of the first 11 terms of the arithmetic series in which asub one = -12 and d=5
*Sunday, April 6, 2014 at 8:11pm*

**algebra 2**

What is the sum of the first 60 positive integers?
*Sunday, April 6, 2014 at 7:54pm*

**TO MS SUE Essay help **

I have to write a essay about the confederation of Canada in 1867 and why it was a good choice. I have all of my body paragraphs done but I'm having trouble thinking of a proper introduction. My first sentence for my intro is: confederation was the best choice for the ...
*Sunday, April 6, 2014 at 6:49pm*

**Chemistry**

1) it is found that .30 M solutions of the three shots Na3X, Na2Y and NaZ have pH's of 8.5, 7.0 and 10.5 not necessarily in order. (X,Y, and Z AE anions. Na is sodium ion) A) explain how anions can act as bases in aqueous solution. Write a chemical equation to explain your...
*Sunday, April 6, 2014 at 6:21pm*

**English (essay help)**

I have to write a essay about the confederation of Canada in 1867 and why it was a good choice. I have all of my body paragraphs done but I'm having trouble thinking of a proper introduction. My first sentence for my intro is: confederation was the best choice for the ...
*Sunday, April 6, 2014 at 1:40pm*

**math**

An alloy of copper is 10% copper and weighs 25 pounds. A second alloy is 18% copper. How much (to the nearest tenth lb.) of the second alloy must be added to the first alloy to get a 13% mixture.
*Sunday, April 6, 2014 at 1:31am*

**Math**

During a flu epidemic, the number of children in the Woodbridge Community School System who contracted influenza after t days was given by the following. Q(t) = 7000 1+249 e−0.6 t (a) How many children were stricken by the flu after the first day? (b) How many children ...
*Saturday, April 5, 2014 at 10:04pm*

**Chem**

1) Which solution will have the lowest OH- A) Na2CO3 B) NaHCO3 C) NaCl D) NaHSO4 E) NH4Cl 2) Which solution will be the strongest base? A) Na2CO3 B) NaHCO3 C) NaCl D) NaHSO4 E) NH4Cl 3) Which aqueous solutions are acidic? A) Na2CO3 and NaHCO3 B) NaCl and NH4Cl C) NaHSO4 and ...
*Saturday, April 5, 2014 at 9:33pm*

**math**

a rope was 9.45 meters. the length of the first piece of rope was 1/5 of the original length. the second piece of rope was 0.12 meter longer than the third piece.how long was the second piece of rope
*Saturday, April 5, 2014 at 3:35pm*

**Biographical Essay Evaluation (Writeacher)**

Write a 3-paragraph Biographical Essay. Discuss your experiences with summmer: the things you enjoyed and the things you missed about school. I am beginning to simplfy my writting, as Bob suggested. However, I am going to sumbit the only the first paragraph first, so that I ...
*Saturday, April 5, 2014 at 12:54pm*

**english writing**

what is the best way to start a memoir about my first job experience? thank you
*Saturday, April 5, 2014 at 9:53am*

**Science**

1.) Use Newton’s first law of motion to explain how wearing a seat belt in a moving car could help prevent injury. 2.) A skydiver prepares to jump out of a plane. Explain how gravity and air resistance will affect the motion of the skydiver before and after he or she ...
*Friday, April 4, 2014 at 8:02pm*

**SCIENCE HELP ASAP! :)**

1.) Use Newton’s first law of motion to explain how wearing a seat belt in a moving car could help prevent injury. 2.) A skydiver prepares to jump out of a plane. Explain how gravity and air resistance will affect the motion of the skydiver before and after he or she ...
*Friday, April 4, 2014 at 7:56pm*

**physics**

Two manned satellites approaching one another at a relative speed of 0.500 m/s intend to dock. The first has a mass of 3.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. Assume that the positive direction is directed from the second satellite towards the ...
*Friday, April 4, 2014 at 6:52pm*

**Science/Biology**

Please check my answers: 1. Which of the following correctly states the relationship between monkeys and humans? A. Humans and monkeys evolved from apes. B. Humans evolved from monkeys. C. Humans and monkeys evolved from the same ancestor, which is now extinct. D. Humans ...
*Friday, April 4, 2014 at 4:40pm*

**English**

Determine the Narrator's perspective The previous night, make your plans for the next day and write them down...If you attend an exclusive Samurai's party and feel timid, you cannot do your part in making it a successful party. You had first better prepare by ...
*Friday, April 4, 2014 at 1:59pm*

**English**

Determine the Narrator's perspective The previous night, make your plans for the next day and write them down...If you attend an exclusive Samurai's party and feel timid, you cannot do your part in making it a successful party. You had first better prepare by ...
*Friday, April 4, 2014 at 1:59pm*

**Social Studies**

Read the speech below. It is a fictitious political speech by Peter, a candidate for the upcoming national election. Then answer the following questions: List all of the arguments in the speech List all of the non-arguments in the speech List all of the factual contents in the...
*Friday, April 4, 2014 at 10:18am*

**Maths**

If the 7th term of an AP is twice the third term and the sum of the first four terms is 42
*Friday, April 4, 2014 at 2:26am*

**Biographical Essay Evaluation (Writeacher)**

Write a 3-paragraph Biographicl Essay. Discuss your experiences with summer: the things you enjoyed and the things you missed about school. What I have written: "A strong sense of freedom is one of my favorite things about summer. Setting in only once the school year has ...
*Friday, April 4, 2014 at 12:02am*

**science**

How does Newton's first law of motion explain the movement of your body when in a car in which you are riding stops suddenly?
*Thursday, April 3, 2014 at 11:43pm*

**science**

How does Newton's first law of motion explain the movement of your body when in a car in which you are riding stops suddenly?
*Thursday, April 3, 2014 at 10:34pm*

**social studies 9**

explain why the mohawks and the other first nations would choose to become allies with europeans, even though they knew that all the europeans were a threat to their territory and way of life
*Thursday, April 3, 2014 at 7:57pm*

**Works Cited alphabetize**

I know that Works Cited pages go in alphabetical order according to the author's last name. How do you decide which work goes first when you have two works by two authors that have the same last name?
*Thursday, April 3, 2014 at 6:16pm*

**Biographical Essay Evaluation (Writeacher)**

Write a 3-paragraph Biographicl Essay. Discuss your experiences with summer: the things you enjoyed and the things you missed about school. What I have written: "A strong sense of freedom is one of my favorite things about summer. Setting in only once the school year has ...
*Thursday, April 3, 2014 at 4:18pm*

**geometry maths**

a circle of radius 1 is inscribed in a square. A smaller circle is tangent to two sides of the square and the first circle. Determine the radius of smaller circle and larger circle
*Thursday, April 3, 2014 at 1:24pm*

**Science - Check my answers**

1. Which of the following statements best defines tides? when waves get bigger because of an approaching storm the rise and fall of ocean water that occurs about every 12.5 hours **** the rise of ocean water that occurs 12 times a day a giant wave that can be extremely ...
*Thursday, April 3, 2014 at 1:21pm*

**math-urgent**

1. two cards are drawn from a standard of 52 cards. Find the probability that the second card is a spade given that the first card is a club. 2. Suppose you draw 3 cards from a standard deck of 52 cards . Find the probability that the third card is a club given that the first ...
*Thursday, April 3, 2014 at 11:49am*

**geometry **

a circle of radius 1 is inscribed in a square. A smaller circle is tangent to two sides of the square and the first circle. Determine the circumradius and inradius of the smaller circle
*Thursday, April 3, 2014 at 7:35am*

**statistics**

à manufacturer of computers designed to aid social scientists in analyzing research data clams that his computers are opérational for at least 80 percent of the time. during the course of the year one computer was operational for 270 days. test, 1 percent ...
*Thursday, April 3, 2014 at 6:47am*

**Probability**

We have k coins. The probability of Heads is the same for each coin and is the realized value q of a random variable Q that is uniformly distributed on [0,1]. We assume that conditioned on Q=q, all coin tosses are independent. Let Ti be the number of tosses of the ith coin ...
*Thursday, April 3, 2014 at 5:13am*

**english**

i am having troubles on what to right for the conflict and resolution can someone tell me what they are ? Thanks My Stepmother by Thanh Nguyen When my stepmother first came, her eyes were sharp and bright as little knives. Her youth and my childhood ran into each other - she ...
*Wednesday, April 2, 2014 at 10:50pm*

**chemistry**

"Write equations for the half-reactions that occur at the anode and cathode for the electrolysis of the following aqueous solution: CuBr2(aq)" Possible oxidation reactions: 1. 2Br- -> Br2 + 2e- = -1.09 2. 2H2O -> O2 + 4H+ + 4e- = -1.23 Possible reduction ...
*Wednesday, April 2, 2014 at 8:08pm*

**PRE CALC**

The 20th term of an arithmetic sequence is 27 and the first term is -11. What is the common difference??
*Wednesday, April 2, 2014 at 7:01pm*

**english**

Poem title, author Setting Characters Conflict(s) Resolution Rhyme or rhythm, pattern? on turning 10 You tell me it is too early to be looking back, but that is because you have forgotten the perfect simplicity of being one and the beautiful complexity introduced by two. But I...
*Wednesday, April 2, 2014 at 4:55pm*

**Social Studies - Please Check my Answer**

Please check my answer, I am not sure for this one. In 1784 the British forced American merchants to pay duties on a. trade goods imported from the British West Indies. - (This is my answer.) b. trade goods imported through Canadian ports. c. British goods sold in America. d. ...
*Wednesday, April 2, 2014 at 4:00pm*

**Math**

A and B had an equal numbers of cupcakes at first. After B bought twice as many cupcakes as he had at first and A gave away 26 cupcakes, B had 6 times as many cupcakes as A. How many cupcakes did A have at first?
*Wednesday, April 2, 2014 at 9:37am*

**Probability**

Alice has two coins. The probability of Heads for the first coin is 1/3, and the probability of Heads for the second is 2/3. Other than this difference, the coins are indistinguishable. Alice chooses one of the coins at random and sends it to Bob. The random selection used by ...
*Wednesday, April 2, 2014 at 6:10am*

**Probability**

A defective coin minting machine produces coins whose probability of Heads is a random variable Q with PDF fQ(q)={3q2,0,if q∈[0,1],otherwise. A coin produced by this machine is tossed repeatedly, with successive tosses assumed to be independent. Let A be the event that ...
*Wednesday, April 2, 2014 at 6:10am*

**central texas college**

Can somebody help please!!!This is the first time that that I take a literature class, on English II in English and I can really use some help. I am taking English 1302, which is pretty much literature and the teacher told us to define some literacy terms, for example: ...
*Tuesday, April 1, 2014 at 10:41pm*

**Science **

how does interdependence of organisms within an ecosystem aid survival in a temperate forest
*Tuesday, April 1, 2014 at 9:11pm*

**trigonometry**

Sue invested $1000 at 6% per year compounded yearly.Find the values of joe's investment at the end of each of the first five years
*Tuesday, April 1, 2014 at 8:48pm*

**Math- urgent**

The second of two numbers is five more than the twice first. The sum of the numbers is 44. Find the numbers. Show all work.
*Tuesday, April 1, 2014 at 8:22pm*

**Physics**

A stone is dropped at t = 0. A second stone, with 4 times the mass of the first, is dropped from the same point at t = 110 ms. (a) How far below the release point is the center of mass of the two stones at t = 410 ms? (Neither stone has yet reached the ground.) (b) How fast is...
*Tuesday, April 1, 2014 at 4:44pm*

**statistic**

Roll two 6-sided dice and examine their sum. a) How long will it take to roll "snake-eyes" (a pair of ones)? b) What is the probability of rolling a sum of 7 on the first roll? c) What is the probability of rolling a sum of 7 on the fourth roll? d) What is the ...
*Tuesday, April 1, 2014 at 2:55pm*

**Math**

5. There was a drawing for a prize at the Columbus Day celebration downtown. The prize was a scale model of the Santa Maria carved from a single piece of wood by a local artist. It was a beautiful ship and Jose really wanted it. Each $2.25 ticket bought one chance in the ...
*Tuesday, April 1, 2014 at 11:34am*

**arithmetic**

Select the first five terms in the arithmetic sequence an = 4n, starting with n = 1.
*Tuesday, April 1, 2014 at 1:04am*

**Math**

5. There was a drawing for a prize at the Columbus Day celebration downtown. The prize was a scale model of the Santa Maria carved from a single piece of wood by a local artist. It was a beautiful ship and Jose really wanted it. Each $2.25 ticket bought one chance in the ...
*Monday, March 31, 2014 at 5:35pm*

**Math**

Each ticket bought is $2.25. Each ticket bought Gives one chance in the drawing. Jose Purchased 10 tickets. If there were 510 tickets Purchased in all, what is the probability that One of Jose's ticket's will be drawn first? 10/510 or1: 52 chance
*Monday, March 31, 2014 at 4:19pm*

**Math**

Each ticket bought is $2.25. Each ticket bought Gives one chance in the drawing. Jose Purchased 10 tickets. If there were 510 tickets Purchased in all, what is the probability that One of Jose's ticket's will be drawn first? 10/510 or1: 52 chance
*Monday, March 31, 2014 at 4:19pm*

**physics**

Light shines through a single slit whose width is 5.7 × 10-4 m. A diffraction pattern is formed on a flat screen located 4.0 m away. The distance between the middle of the central bright fringe and the first dark fringe is 3.9 mm. What is the wavelength of the light?
*Monday, March 31, 2014 at 2:44pm*

**science**

1. Use the diagram to answer question 1. description: particles have enough energy to break free from each other and can move around freely; particles spread out in different directions sketch: What kind of substance is described? (1 point) solid ...
*Monday, March 31, 2014 at 2:24pm*

**Math **

Find the probability of drawing the face card that is a spade on the first-draw replacing it and drawing a king card on the second draw
*Monday, March 31, 2014 at 11:56am*

**physic**

Physicists claim that charge never flows through an ideal capacitor. Yet when an uncharged capacitor is first placed in series with a resistor and a battery, then current flows through the battery and the resistor. Explain how this is possible.
*Sunday, March 30, 2014 at 8:47pm*

**more proofreading.**

this is another body paragraph to my research paper. can I get this one proofread as well thanks! Both Japan and the United States protect freedoms of speech and press by similar provisions in each nation’s constitution. For example, the First Amendment of the U.S. ...
*Sunday, March 30, 2014 at 6:39pm*

**math**

A salmon has to swim 25 miles upstream. It seems 7 miles each day and drifts 5 miles at night. How many days does it take for the salmon to first reach the 25 mile mark?)
*Sunday, March 30, 2014 at 5:15pm*

**physics**

a race car traveling northward on a straight, level track at a constant speed travels 0.750 km in 20.0 s. the return trip over the same track is made in 25.0 s. a) what is the average velocity if the car in m/s for the first leg of the run? b) what is the average velocity for ...
*Sunday, March 30, 2014 at 3:13pm*

**Math**

your class is conducting an experiment to study geometric sequences. The class forms a line. the first person takes a whole pizza,divides it in half, keeps half, and hands it to the next person. The next people in line do the same with there peices. Which portion does the ...
*Sunday, March 30, 2014 at 2:42pm*

**physics**

The drawing shows three identical springs hanging from the ceiling. Nothing is attached to the first spring, whereas a W = 4.20-N block hangs from the second spring. A block of unknown weight hangs from the third spring. From the drawing, determine the spring constant (in N/m...
*Saturday, March 29, 2014 at 3:41pm*

**Physics**

The ship in the figure below travels along a straight line parallel to the shore and a distance d = 580 m from it. The ship's radio receives simultaneous signals of the same frequency from antennas A and B, separated by a distance L = 700 m apart. The signals interfere ...
*Saturday, March 29, 2014 at 1:28am*

**Finance**

10. A new factory at Arcata requires an initial outlay of $3.5 million to be paid immediately. The factory will last for eight additional years, after which it can be sold for a salvage value of $2,000,000. Sales will be $800,000 during the first year of operation and will ...
*Friday, March 28, 2014 at 10:38pm*

**Finance**

9. H Corporation is considering a training program that cost $600,000. Anticipated benefits are $60,000 in the first year, $75,000 in the second year, $85,000 in the third year, and $95,000 in the fourth year. Benefits will decline 8 percent a year after the fourth year, and ...
*Friday, March 28, 2014 at 10:37pm*

**probability**

A fair coin is flipped independently until the first Heads is observed. Let K be the number of Tails observed before the first Heads (note that K is a random variable). For k=0,1,2,…,K, let Xk be a continuous random variable that is uniform over the interval [0,3]. The Xk...
*Friday, March 28, 2014 at 12:36pm*

**Criminal law**

1. The primary purpose of psychological profiling is to provide: A.the identity of an offender involved in a violent crime such as murder or sex crime. B. absolute information about an offender’s emotional and personality character traits and to immediately direct ...
*Friday, March 28, 2014 at 9:55am*

**Mathematics**

Give the first three terms of the sequence of 1.Tn+1=Tn+n
*Thursday, March 27, 2014 at 11:20pm*

**Math**

I was wondering if you can help me with math real quickly. I just cant figure this out. For the first question I have to find the surface area for the given cylinder. I have to use 3.14 and round to the nearest whole number. The radius is 6ft and the height is 20 ft. A. 180 ...
*Thursday, March 27, 2014 at 10:37pm*

**math**

Mrs. Jones and Mr. Graham had the same amount of money at first. After Mrs. Jones bought a computer that cost $2,055, she had 1/4 as much money as Mr. Graham. How much money did Mr. Graham have?
*Thursday, March 27, 2014 at 9:54pm*

**Persuasive Writing help**

I'm writing a persuasive request but English is not my native language. I've done many drafting and revising, but still not sure. so I would be grateful if you could show me what I did wrong and the correct way to revise it. Thanks "Dear xxx, I would like to ...
*Thursday, March 27, 2014 at 9:29pm*

**Calculus**

A weight oscillates in a vertical motion according to the position function y(t)=-5 cos(t). Assuming t≥0, when will the acceleration if the weight be zero for the first time?
*Thursday, March 27, 2014 at 2:51pm*

**science**

an you please solve the questions for me 1. 3 moles of pesticide of molecular mass 200 g/mole is applied to a closed system consisting of 20 m3 of water, 10 m3 of air, 1 m3 of sediment, and 0.001 m3 of fish. Determine the concentration and amount in both grams and mole units ...
*Thursday, March 27, 2014 at 2:24pm*

**physics**

A 6.26-g bullet is moving horizontally with a velocity of +344 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The ...
*Thursday, March 27, 2014 at 1:35pm*

**physics**

A weight oscillates in a vertical motion according to the position function y(t)=-5cos t. Assuming t>=0 (greater than or equal to), when will the acceleration of the weight be zero for the first time?
*Thursday, March 27, 2014 at 12:13pm*

**finance**

Polycorp has a current dividend of $5.00 due tomorrow and is expected to pay a dividend $5.50 at the end of the first year. Its dividend is expected to grow at 8% pa for the following year. Dividends are then expected to grow at 4% pa for another two years. Then they are ...
*Thursday, March 27, 2014 at 10:32am*

**Chemistry**

How would you exactly start the first problem? My thermodynamic skills is a bit rusty. I am assuming I have to use ΔH°f under the given reaction..? But then..we barely covered ΔG° in class. Am I to use this equation, ΔG° = ΔH° - T ΔS&...
*Thursday, March 27, 2014 at 1:31am*

**English**

After watching a documentary about the environment on TV, I decided to start my own project,"Project Green Kid." Today was my first day as a Green Kid...... ---------------------------------- Do we have to use "a Green Kid"? What about "a green kid&...
*Thursday, March 27, 2014 at 1:05am*

**FINANCE**

A perpetuity with the first annual cash flow paid at the beginning of year 4 is equivalent to receiving $103,000 in 15 years’ time. Assume that the perpetuity and the lump sum are of equivalent risk and that j12 = 14.32% pa is the appropriate interest rate. How much is ...
*Thursday, March 27, 2014 at 12:49am*

**FINANCE**

Polycorp has a current dividend of $5.00 due tomorrow and is expected to pay a dividend $5.50 at the end of the first year. Its dividend is expected to grow at 8% pa for the following year. Dividends are then expected to grow at 4% pa for another two years. Then they are ...
*Thursday, March 27, 2014 at 12:47am*

**pre calculus**

A taxi company charges $2.00 for the first mile (or part of a mile) and 20 cents for each succeeding tenth of a mile (or part). Express the cost C (in dollars) of a ride as a piecewise-defined function of the distance x traveled (in miles) for 0 < x < 2
*Thursday, March 27, 2014 at 12:07am*

**physics**

Some say that the hot air balloons with which the Montgolfier brothers performed their first flight had a volume of 1700 cubic metres and could lift 780 kilograms (that includes the balloon, basket and payload). Assume that the balloon took off on a day when the sea level ...
*Thursday, March 27, 2014 at 12:00am*

**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
*Wednesday, March 26, 2014 at 10:39pm*

**Socials**

What year was Canada's first railway : the Champlain and Saint Lawrence railroad built in?
*Wednesday, March 26, 2014 at 10:09pm*

**physics**

A car moving with an initial speed v collides with a second stationary car that is 50.7 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 33.2 percent of the original speed. Calculate the final speed of the second ...
*Wednesday, March 26, 2014 at 7:48pm*

**Math**

If Mike has 8 dimes and 6 pennies in his pocket. If he randomly selected one coin and then a second coin without replacing the first, what is the probability that both coins were dimes?
*Wednesday, March 26, 2014 at 7:41pm*

**LA PLS HELP!!!!! (check my work) **

1. What causes Brer Lion to be tied to a tree? (1 point) >>>his fear<<< his strength his obedience to Brer Rabbit 2. Which of the following is a reasonable prediction about what will happen after this story is over? (1 point) Brer Lion and Brer Rabbit will ...
*Wednesday, March 26, 2014 at 7:04pm*

*******Help Statistic**

Imagine taking a 10-question true or false exam. You randomly guess at each question. Don't do any calculations, just tell me your first impressions a). Is this a binomial setting? b) How many question do you think you would get correct? c). How surprised would you be if ...
*Wednesday, March 26, 2014 at 4:11pm*

**Maths**

4x+1,2x+4 and x+3 are first three terms of arithmetic sequence determine the value of x
*Wednesday, March 26, 2014 at 10:47am*

**Math**

Homing pigeons avoid flying over large bodies of water, preferring to fly around them instead. Assume that a pigeon released from a boat 1 mile from the shore of a lake flies first to point P on the shore and then along the straight edge of the lake to reach its home at L. If ...
*Wednesday, March 26, 2014 at 12:07am*

**chemistry**

The rate constant of a first-order reaction is 4.25 x 10^-4 s^-1 at 350 Celsius. If the activation energy is 103 kJ/mol, calculate the temperature at which its rate constant is 8.75 x 10^-4 s^-1.
*Tuesday, March 25, 2014 at 11:21pm*

**Science asap thankies :)**

What would a permanently magnetic substance be called? I cant remember what my teacher called it, it was a short first word then magnet.. sorry and thanks!
*Tuesday, March 25, 2014 at 10:39pm*

**Chemistry**

The degradation of CF3CH2F (an HFC) by OH radicals in the troposphere is first order in each reactant and has a rate constant of k=1.6×108M−1s−1 at 4∘C. If the tropospheric concentrations of OH and CF3CH2F are 8.1×105 and 6.3×108 molecules ...
*Tuesday, March 25, 2014 at 10:03pm*

**How-To Essay Evaluation (Writeacher)**

What do you think? "In order to shoot a bow accurately, the first step to take is to determine your dominant eye (the eye from which a person prefers to receive visual input). While this action might have been what you least expected, by determining your dominant eye, you...
*Tuesday, March 25, 2014 at 4:20pm*

**Physics**

A box of mass 50.0 kg is connected to a second box with a mass of 54.0 kg. Both are sitting on a horizontal surface and the coefficient of kinetic friction between the surface and each box is 0.51. If the second box is pulled away from the first box with a force of 605.8 N, ...
*Monday, March 24, 2014 at 8:51pm*

**Physics**

A railroad car with a mass of 12000 kg collides and couples with a second car of mass 18000 kg that is initially at rest. The first car is moving with a speed of 9 m/s before collision. If external forces can be ignored, what is the final speed of the two railroad cars after ...
*Monday, March 24, 2014 at 8:06pm*

**math**

Mr. Gonzalez's sixth-grade class is putting on a play. He reserved the first 6 rows of the auditorium for family members and friends of the 24 students in his class. If each row contains 17 seats and each student can invite the same number of guests, how many guests can ...
*Monday, March 24, 2014 at 6:48pm*

**Social Studies :)**

2. The only Native Americans who successfully stayed on their land were the (1 point) Seminole. *** Sauk. Cherokee. Fox. 3. What act did the United States government pass in order to be able to move Native Americans off their land into Indian Territory? (1 point) Native ...
*Monday, March 24, 2014 at 4:36pm*

**math **

Rosy has been jogging for 3 weeks. In the first week She jogged 3 days each for 4/6 of an hour. During week 2 she jogged for 3/4 of an hour on 2 days. In week 3 she jogged 4 days each for 3/5 of an hour . WRITE one expression that would show the total time she spent jogging in...
*Monday, March 24, 2014 at 4:12pm*

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