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8th grade math
Hi! I need some help with absolute value. First, I want to ask is that for absolute value, is that if the absolute value is |6| then would the answer be 6 or -6? I am really confused with this so if somebody could explain this to me, it would be a big help, thank you!
Monday, August 20, 2012 at 9:58pm
math
An amount of $5000 is put into three investmesnts at rates of 6%, 7%, and 8% per annum, respectively. The total income is $358. The income from the first two investsments is $70 more than the third investment. Find the amount of each investment.
Monday, August 20, 2012 at 8:36pm
mathematics
a person hired a firm to build a cb radio tower. the firm charges $100 for labor for the first 10 feet. after that the cost of the labor for each succeeding 10 feet is $25 more than the preceding 10 feet. that is, the next 10 feet will cost $125 the next 10 feet will cost $150...
Monday, August 20, 2012 at 8:29pm
sun ridge
as a diver descends below the surface of the ocean, she attaches air tanks to a long cable. the first tank is at 150 meters below the surface. the other tanks are attached at intervals of 250 meters below the surface. what integer represents the depth relative to the surface ...
Monday, August 20, 2012 at 7:31pm
physics
A 1500 m race is divided into 3 equal, 500 m, sections. In the first section, a racer accelerates from rest at 3.0 m/s^2. In section 2, his velocity reduces steadily to 70 m/s and in section 3, he constantly slows until he stops on the finish line. How long did the entire trip...
Monday, August 20, 2012 at 6:52pm
chemisry
metallic bonds are not fully broken until the metal has first melted and then boiled. the boiling points of sodium, magnesium and aluminium are 890 c 1110 c and 2470 c respectively what does this suggest about the srengths of the metallic bonds in these three elements?
Monday, August 20, 2012 at 6:21pm
social studies
the first native americans gathered what? (3 things) that's why we call them hunter-gatherers.
Monday, August 20, 2012 at 5:57pm
Alegebra 1
Each pair of equations below is equivalent. What was done to the first to get the second; in other words something was done to both sides of the first equation to "turn it into" the second equation - what was done to the first equation? Any help would be very much ...
Monday, August 20, 2012 at 12:02am
aig math
a factory had 1080 shirts and pants altogether.after donating 60 pants to charity the number of shirts it had was three times the number of pants left.how many pants did the factory have at first/ my answer is 315 am i right,if not please tell me why and how.
Sunday, August 19, 2012 at 4:47pm
Math
What is the sum of the first 40 consecutive odd numbers?
Sunday, August 19, 2012 at 12:40pm
math
Xuan saved $5340 in 3 years. If he saved $95 per month in the first year and a fixed amount per month for the next 2 years, how much did he save per month during the last 2 years?
Sunday, August 19, 2012 at 1:10am
Art
Hello, can somebody please send me a link to a website that explains how african masks grew.. (first came about) I cannot find a website that explains how the masks were first made, etc.
Saturday, August 18, 2012 at 11:08pm
Spanish writing
Spanish writing - SraJMcGin, Saturday, August 18, 2012 at 8:49pm Just because the directions say to use the Subjunctive, it does NOT mean to use it everywhere! Your first statement is FACT and therefor there is no Subjunctive! hay muchas, etc. The 2nd sentence says what you DO...
Saturday, August 18, 2012 at 9:35pm
Maths
A drinking straw of length 21cm is cut into 3 pieces the length of the first piece is x cm the second piece is 3 cm shorter than the first piece the third is twice as long as the first piece state term of x to represent the sum of of the length {2} write an expression in the ...
Saturday, August 18, 2012 at 7:21pm
math
how many different positive four-digit integers can be formed if the first digit must be 2, the last digit cannot be zero, and digits may be repeated? I know the answer is 900 but I'm not sure how I would get the answer? thanks!
Friday, August 17, 2012 at 10:40pm
Physic
The field of an unknown charges is first mapped with a 1.0 X 10^-8 C test charges, then repeated with 2.0 X 10^-8 C test charge. a) would the same forces be measured with the two test charges (Explain)? b) would the same fields be determine using the two test charges (Explain)?
Friday, August 17, 2012 at 9:35pm
english
how do you start the first paragraph of a five paragraph article summary?
Friday, August 17, 2012 at 3:23pm
physics
In one day, a 75-kg mountain climber ascends from the 1500-m level on a vertical cli to the top at 2400 m. The next day, she descends from the top to the base of the cli , which is at an elevation of 1350 m. What is her change in gravitational potential energy (a) on ...
Friday, August 17, 2012 at 10:14am
algebra
the first of two films lasted 9 minutes less than twice as long as the second. the combined length of the two films plus a 5-minute break between them was 260 minutes. how long was the first film?
Thursday, August 16, 2012 at 10:27pm
algebra 2
If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x + y = 2 3x + 2y = 9
Thursday, August 16, 2012 at 1:23pm
math
Many states offer personalized license plates. California, for example, allows personalized plates with seven spaces for numerals or letters, or one of the following four symbols. What is the total number of license plates possible using this counting scheme? (Assume that each...
Wednesday, August 15, 2012 at 8:37pm
math
A typical Social Security number is 555-47-5593. How many Social Security numbers are possible if the first two digits cannot be 0? 1 0
Wednesday, August 15, 2012 at 7:04pm
Calculus
Find the first 6 terms of the sequence b^1 = 5. B^n = 2b(n -1) when n>1. Then write an explicit definition of the sequence and use it to find the 12th term.
Wednesday, August 15, 2012 at 2:21pm
math
I get the first pattern but I still do not get the second pattern. So please help me. Thank you.
Tuesday, August 14, 2012 at 7:52pm
language expression
9).Choose the sentence that has the same senetence pattern as the first sentence. She opened her book. A.George seemed pleased B.Tim strummed his guitar C.Sue is a superb athlete D.Grace wrote in her daily .......D?
Tuesday, August 14, 2012 at 6:12pm
English
“The Marginal World” by Rachel Carson Selection Test A Critical Reading Identify the letter of the choice that best answers the question. 1. What is Carson’s main reason for writing about nature in “The Marginal World”? A. to share the meaning and ...
Monday, August 13, 2012 at 6:47pm
calculus
Just want to check whether my answer is correct for quotient rule F(v) : (600^3/2 + 20250)/v F'(v) : (300^3/2 - 20250)/v^2 F"(v) : (-150v^5/2 + 40500)/v^3 Can anyone let me know whether my answer is correct for first and second derivative based on F(v) ??
Monday, August 13, 2012 at 6:12pm
calculus
Just want to check whether my answer is correct for quotient rule F(x) : (600^3/2 + 20250)/v F'(x) : (300^3/2 - 20250)/v^2 F"(x) : (-150v^5/2 + 40500)/v^3 Can anyone let me know whether my answer is correct for first and second derivative based on F(x) ?? Thank you!!
Monday, August 13, 2012 at 2:02pm
writing sentences and paragrahs
Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe one particular ...
Friday, August 10, 2012 at 12:45pm
The difference between Ball Mill and Raymond Mill
Ball Mill materials is being broken, further crush the key equipment. Mill widely used in cement, Portland products, new building materials, refractories, fertilizers, as well as black and non-ferrous metal processing industries such as the production of glass ceramics, ...
Friday, August 10, 2012 at 3:39am
(math) statistic
For a particular sample of 63 scores on a psychology exam, the following results were obtained. First quartile = 57 Third quartile = 72 Standard deviation = 9 Range = 52 Mean = 72 Median = 68 Mode = 70 Midrange = 57
Friday, August 10, 2012 at 2:32am
social studies
With the vital assistance of _______, Theodore Roosevelt established the first comprehensive national conservation policy
Friday, August 10, 2012 at 1:38am
physics
two objects are thrown from the top edge of a cliff with a speed of 10 m/s. one object is thrown straight down and the other straight up. if the first object hits the ground in 4.0 second, the second hits the ground in ________ seconds after the first object.
Thursday, August 9, 2012 at 7:24pm
Calculus
This is another textbook number that doesn't have the solution and I can't figure it out. Any tips would be greatly appreciated. For each of the plane surfaces, calculate the exact surface area. (Answer in fractions) (a)The surface composed of all surfaces bounded by ...
Thursday, August 9, 2012 at 12:48pm
Physics
Box, mass m 1 , at rest against a compressed spring, spring constant k and compression of Δx, at the top of a ramp, height h, is released. It slides down the ramp, angle θ, with friction, coefficient μ. Half way down the ramp, it bumps into and sticks to another...
Thursday, August 9, 2012 at 10:48am
biology
1.What is the % concentration of oil in the first, second, and third trophic levels in our food chain? 2.How did the concentration of oil change from one trophic level to the next? 3.How does the change in concentration represent biomagnification? 4.How does this also ...
Thursday, August 9, 2012 at 9:27am
algebra
I am a multiple of 2 but not 3. I am the largest two digit number that fits the first clue.what am i?
Wednesday, August 8, 2012 at 7:57pm
math30
Sequences 1)A sequence has a first term of 24 and every other term is one half of the previous term. a)Write the first four terms of the sequence. b)Find a recursive formula that defines this sequence. c)Find an explicit formula that defines this sequence. This will be ...
Wednesday, August 8, 2012 at 6:44pm
math
A plate in the first quadrant, bounded by the curves y=e^x, y=1, and x=4, is submerged vertically in water its upper corner on the surface. The surface of the water is given by the line y=e^4. Find the total force on one side of the plate if the weight of water is 62.5 lb/ft^3...
Wednesday, August 8, 2012 at 3:19pm
Math
John will have to make 180 monthly mortgage payments and the first payment was made on January 15,1989.If he makes one payment each month,in what year will John make his last payment?
Wednesday, August 8, 2012 at 11:02am
Math
John will have to make 180 monthly mortgage payments and the first payment was made on January 15,1989.If he makes one payment each month,in what year will John make his last payment?
Wednesday, August 8, 2012 at 11:01am
public speaking
Which is NOT a benefit of studying public speaking? A. Creates good first impression on others B. Communicates competence C. Proves our expertise D. Develops our ability to communicate ideas and message clearly and with impact
Tuesday, August 7, 2012 at 7:02pm
Calculus
Find the length in the first quadrant of the circle desribed by the polar equation r = 2sin theta + 4 cosTheta. The circle is graphed in the accompanying figure. A. (Square Root 2)Pi B. (Square Root 5)Pi C. 2Pi D. 5Pi
Tuesday, August 7, 2012 at 6:37pm
Calculus
Find the area under one arch of a cycloid describe by the parametric equations x=3(2Theta - sin 2Theta) and y= 3(1-cos2Theta). Use 0 and pi for the limiting values of Theta. A. 9Pi B. 18Pi C. 27Pi D. 36Pi Find the area in the first quadrant bounded by the arc of the circle ...
Tuesday, August 7, 2012 at 6:32pm
Physics
An air-hockey puck of mass m floats across the table essentially frictionless on a cushion of air. This puck bumps nearly head-on into a second puck that has 3 times the mass, moving in the opposite direction but with the same speed, v i , as the lighter puck. Immediately ...
Monday, August 6, 2012 at 8:35pm
Financial management
Im having a little trouble can someone please help me. Im not sure if my answers were right or what the rest would be. 1. _________C__________ is the interest rate in which NPV equals zero. a. Required Rate of Return b. Annual percentage rate (APR) c. Internal Rate of Return ...
Monday, August 6, 2012 at 3:04pm
Calculus AB/AP
Use the rectangles with the given dimensions to approximate the area of the region in the first quadrant bounded by the graphs of y = 4 – x2 , y = 0, and x = 0. 4 _ 3|_|-. 2|_|-|-. 1|_|-|_|_ |_|_|_|_| 1 2
Monday, August 6, 2012 at 1:59pm
english
please organize these into a paragraph ;astronaauts supposed to rest for eight hours, but too excited to rest ;astronauts easily hopped high because moon has less gravity than earth ;opened spaceship door 61/2 hours after landing ;brought back to earth some moon rocks and soil...
Sunday, August 5, 2012 at 8:43am
MATH
Find all real solutions of the equation by first rewriting the equation as a quadratic equation. (Enter your answers as a comma-separated list.) 4x4 + 15x2 − 4 = 0
Saturday, August 4, 2012 at 8:17pm
Logic
How does the process of deductive reasoning aid in understanding an argument?
Saturday, August 4, 2012 at 5:53pm
physics
A locomotive is pulling 17 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (with its load) is 37,000 kg. If the train is accelerating at 0.7 m/s2 on a level track, what is the tension in the coupling between the second and ...
Saturday, August 4, 2012 at 10:25am
Society & Environment Engineering
The concept of appropriate technology appeared first in mind____________ Don't have any option. please help someone to get the answer.
Saturday, August 4, 2012 at 5:36am
medical billing/coding
I need help coding this question. could someone help me. CPT CODE:__________________________ ICD-9-CM CODE:_____________________ Code the following "You've started your first day at Venture Outpatient Surgery Center. OPERATIVE REPORT: Preoperative diagosis: Left flank...
Friday, August 3, 2012 at 7:07pm
math
Write the first five terms of the arithmetic sequence. a1 = -37; d = 9
Friday, August 3, 2012 at 12:58pm
Math
Write the first four terms of the sequence defined by the recursion formula. a1 = 6 and an = 3an-1 for n ≥ 2
Friday, August 3, 2012 at 12:52pm
ashworth
The Tao Inc. purchased an asset for $170,000 with a salvage value of $8,500 have a useful life of four years. Find the depreciation expense for the first year using the 150% declining balance method.
Friday, August 3, 2012 at 12:31pm
Physics
Suppose a nucleus of 93X236 fissions into two fragments whose mass ratio is 0.37:0.63. With the aid of the drawing, estimate the energy (in MeV) released during this fission. The drawing Shows A large. The A1 smaller the A2, A2 is nearly double the size of A1
Friday, August 3, 2012 at 12:04pm
Calculus AP
hi again im really need help TextBook: James Stewart:Essential Calculus, page 311. Here the problem #27: First make a substitution and then use integration by parts to evaluate the integral. Integral from sqrt(pi/2) TO sqrt(pi)of θ^3 cos(θ^2)dθ. i did my problem...
Thursday, August 2, 2012 at 5:59pm
law/421
whether the First Amendment to the U.S. Constitution protects defamation. the relationship between the First Amendment of the U.S. Constitution and censorship when doing business?
Thursday, August 2, 2012 at 12:42pm
social studies
If a bow with a draw weight of 60 kilograms were to fire at someone 5 meters away but the user had to roll first before drawing back and firing two arrows. Would the target have enough time to dive for cover behind a rock?
Thursday, August 2, 2012 at 12:20am
Calculus
after t months on the job a postal clerk cn sort Q(t)=700-400e^-0.5t letters per hour. Wht is the average rate at which the clerk sorts mail during the first 3 months on the job. What is the average rte t which the clerk sorts mail during the first 3 months on the job? What is...
Wednesday, August 1, 2012 at 11:51pm
Algebra
Parking in a student lot cost $1 for the first half hour and $1.25 for each hour thereafter. A partial hour is charge the same as a full hour is charge the same as a full hour. What is the longest time that a student can park in this lot for $9.
Wednesday, August 1, 2012 at 11:45pm
Calculus
A line in the first quadrant is tangent to the graph of y=1/x^2. How can we minimize the area between the line and the axes?
Wednesday, August 1, 2012 at 10:00pm
Physics
Suppose a nucleus of 93X236 fissions into two fragments whose mass ratio is 0.37:0.63. With the aid of the drawing, estimate the energy (in MeV) released during this fission. Ive treied to do this problem but i keep getting the wrong answer. I keep getting 164.253 MeV
Wednesday, August 1, 2012 at 5:16pm
Math ( Can You check my Work?)
1.an = 3n - 1 2. an = 2(2n - 3) 3.an = 4^n 4.an = (2/3)^n 5. an = (-1)^n(n + 5) 6. an = (-1)^n + 1(n + 6) 7. an= n+3/2n-1 8. a1 = -5 and an = an-1 - 3 for n ≥ 2 9. a1 = -6 and an = -2an-1 for n ≥ 2 10.a1 = 4 and an = 3an-1 + 2 for n ≥ 2 11. Find a8 when a1...
Wednesday, August 1, 2012 at 12:41pm
Dynamics
Two moving balls collide together. Determine the magnitude of their common final velocity. The first ball of mass o.5 kg and a velocity va = 3i+5j m/s. The second ball B has a mass of 1 kg and a velocity vb = 1.2i-j+1.8k m/s
Tuesday, July 31, 2012 at 1:14pm
math
Find the error. Sam is finding 9-6+2. Find his mistake and correct it. Steps: First solve the problem. Second, write a summary statement. Third, find Sam's mistake and explain in complete sentences.
Monday, July 30, 2012 at 5:24pm
Maths
The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=Ae^kt where A and k are constants. With the aid of appropriate examples, explain how the growth of P over ...
Monday, July 30, 2012 at 5:16am
Maths B - Population Growth
The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P=¡¼Ae¡½^kt where A and k are constants. With the aid of appropriate examples, ...
Monday, July 30, 2012 at 5:15am
PHYSIC
Which of the following objects was the first to be discovered by photographic method
Sunday, July 29, 2012 at 10:06pm
business Communication
1. Which of the following statements explains why threats are NOT effective for motivating people? A. Threats reduce tension. B. Threats ensure that appropriate actions are not abandoned. C. Threats produce permanent change. D. Threats provoke counteraggression. I think the ...
Sunday, July 29, 2012 at 9:17pm
math
write a system of two equation and use them to solve the following problem: two farmers were discussing how many chickens and cows they would purchase at market. the first farmer says to the second, I have just purchased 30 new heads and 100 feet. how many chicken and how many...
Sunday, July 29, 2012 at 7:03pm
math
1. A teacher has 10 boys and 12 girls in her grade school class. In how many ways can she select 8 of the children to be in a play if she must select 5 boys and 3 girls. 2. The manager of the various displays in the Acme Fine Clothing Emporium has a window which will hold 4 ...
Sunday, July 29, 2012 at 4:50pm
Geometry
If two non parallel lines are perpendicular to two other straight lines , each to each . Show that the acute angle between the first pair of lines is equal to the acute angle between the second pair of lines.
Sunday, July 29, 2012 at 3:58am
algebra
The Greek God Zeus ordered his blacksmith Hephaestus to create a perpetual water-making machine to fill Zeus' mighty chalice. The volume of Zeus' chalice was reported to hold about one hundred and fifty sextillion gallons (that is a fifteen followed by twenty-two zeros...
Sunday, July 29, 2012 at 1:30am
PHY: To AJAYB, follow up on previous response
First, I'd like to thank you for your response to my question. However, I had some follow up questions on your response from Saturday, July 28, 2012 at 8:27am. If you could take a look at that post and get back to me, it would be greatly appreciated.
Sunday, July 29, 2012 at 12:21am
Maths B question - population
The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P = Aekt where A and k are constants. (a) With the aid of appropriate examples, explain how the growth of P ...
Saturday, July 28, 2012 at 11:34pm
maths
the circular pond has radius r. the area of a pond whose radius is 6m more than r is 4 times the area of the the first pond. the radius r of the first pond equals
Saturday, July 28, 2012 at 5:19am
algebra
parking in a student lot cost $1 for the first half hour and $1.75 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time that a student can park in this lot for $9 what is the answer
Saturday, July 28, 2012 at 12:04am
Physics
Diffraction grating #1 has half the lines/cm that diffraction grating #2 does. When used with a certain wavelength of light, both gratings give first order maxima. Which of the following statements is true for the same wavelength of light.
Friday, July 27, 2012 at 2:28pm
Microeconomics
Assume that the marginal utilities for the first three units of a good consumed are 200, 150, and 125 respectively. What is the total utility for the first unit?
Friday, July 27, 2012 at 1:24am
system analysis and palnning
objective The Milestone Assignments are based on the Projects and Cases for use with the Systems Analysis and Design Methods textbook by Whitten & Bentley. There are six (6) parts to the Project, consisting of twelve (12) milestones. During Weeks 2-7, you will be required to ...
Thursday, July 26, 2012 at 11:07pm
books
"Hi. This is my first time here. Anyway, what do I do to answer this statement?- 'Discuss the the narrator's success in the context of this statement. (Statement: How can a mother's pleas... [Source: The Pact])'"
Thursday, July 26, 2012 at 6:11pm
physics
On the Moon, a falling object falls just 2.65 feet in the first second after being dropped. Each second it falls 5.3 feet farther than in the previous second. How far would an object fall in the first ten seconds after being dropped?
Thursday, July 26, 2012 at 5:26pm
Math152
First, you must determine how many tickets are possible. In your state, the lottery balls have the numbers 1-46 on them and you must pick 6 numbers. a. Determine how many possible tickets exist for your state lottery. b. Now, you need to come up with a plan to buy all those ...
Thursday, July 26, 2012 at 5:20pm
law/421
What is the relationship between the First Amendment of the U.S. Constitution and censorship when doing business?
Thursday, July 26, 2012 at 12:21pm
Physics
Starting from rest, a 6.70 kg object falls through some liquid and experiences a resistive (drag) force that is linearly proportional to the velocity of the object. It's measured that the object reaches half its terminal speed at 4.50 s. a) What is the terminal speed for ...
Thursday, July 26, 2012 at 11:59am
English help
Question 1 Marks: 1 Davey has decided to research the history of fire engines in America. To get started he's written a list of research questions. Which of the following questions is the best research question for him to ask? a. Who holds the patent for the fire engine? b...
Wednesday, July 25, 2012 at 7:06pm
English help
Question 1 Marks: 1 A common theme that runs through all the sections of Song of Myself is Whitman's own — Choose one answer. a. belief in his power as a poet b. love of solitude c. inability to trust people d. failure to change the world Question 2 Marks: 1 Free ...
Wednesday, July 25, 2012 at 3:25pm
pH preparation
Hello. I need to prepare 1 liter of a buffer of 0.1M , pH=6.0. (Acid =HCl, base=Sodium tetraborate) I have in the lab: 320331 Sigma-Aldrich hydrochloric acid ACS reagent, 37% . and 221732 Sigma-Aldrich Sodium Tetraborate (Molecular Weight : 201.22 g/mol). So what quantity of ...
Wednesday, July 25, 2012 at 3:16pm
ME ENG
Hello. I need to prepare 1 liter of a buffer of 0.1M , pH=6.0. (Acid =HCl, base=Sodium tetraborate) I have in the lab: 320331 Sigma-Aldrich hydrochloric acid ACS reagent, 37% . and 221732 Sigma-Aldrich Sodium Tetraborate (Molecular Weight : 201.22 g/mol). So what quantity of ...
Wednesday, July 25, 2012 at 12:22pm
physics
An unknown force pushes a 17 kilogram block across a smooth (frictionless) floor. Three seconds after the force is first applied to the block, the block is moving with a speed of 6 meters per second. What is the magnitude of the unknown force?
Tuesday, July 24, 2012 at 7:10pm
nonfiction
Thoreau writes that people should be "mining themselves for gold".By this he is stating in another way the ideal of Socrates which was to A.deny thyself to learn what is valiable B.live and let live C.put first things first D.know thyself my answer is B
Tuesday, July 24, 2012 at 3:08pm
GOVERNMENT
A. Westside v. Mergens B. Texas v. Johnson C. Roe v. Wade D. Bethel v. Fraser E. Dennis v. U.S. F. Lemon v. Kurtzman G. Wallace v. Jaffree 1.Established that a woman's reproductive right is guaranteed as part of the right to privacy; set the precedent for all abortion ...
Tuesday, July 24, 2012 at 1:25pm
Math
The null and alternate hypotheses are: H0: π1 ≤ π2 H1: π1> π2 A sample of 100 observations from the first population indicated that X1 is 70. A sample of 150 observations from the second population revealed X2 to be 90. Use the .05 significance ...
Tuesday, July 24, 2012 at 12:47pm
Accounting
I need some help with this question… It is confusing me… I have parts of it done but would like someone to help explain it to me. A truck was purchased on January 2 at a cost of $60,000. It’s expected to be used for five years and to have a residual value of $5,...
Tuesday, July 24, 2012 at 4:55am
chemistry
What is the amount of heat required to turn 1 g of ice into vapor directly without forming a liquid first?
Tuesday, July 24, 2012 at 1:08am
physics
An object carries a charge of -8.0 uC, while another carries a charge of -2.0 uC. How many electrons must be transferred from the first object to the second so that both objects have the same charge? Qavg = (object 1 + object 2)/2 Qavg= -5uC Object 2- Qavg = 3uC 3E-6 C/1.6E-19...
Monday, July 23, 2012 at 8:53pm
Physics
An object carries a charge of -8.0 ìC, while another carries a charge of -2.0 ìC. How many electrons must be transferred from the first object to the second so that both objects have the same charge? Qavg = (object 1 + object 2)/2 Qavg= -5ìC Object 2- Qavg...
Monday, July 23, 2012 at 4:17pm
algebra 2
The MePhone, a new smartphone, is being introduced in the Louisville area. The manufacturer plans to sell 30,000 phones during the first week and expects sales to increase by 8% each week after that find the equation, determine if its aritmetic or geometric, wk 0 is 30,000 wk ...
Monday, July 23, 2012 at 1:27pm
Physics
I had a two part question in which I'm fairly sure I did the first part correct, but part b I am unsure about. For part a, I had to determine the magnitude of the net electric field at the origin, which I got E= 1.7 X 10^7 N/C. Part b)if a point charge of 3 µC was ...
Monday, July 23, 2012 at 11:16am
Medium Speed wet milling machine and the relations
So far, the world's medium-speed milling machines are dry law. Hot air carrier that is, separation, sorting products. Therefore in need of a massive and complicated: medium heat generator, fans, vents Central, separator , explosion-proof system (inert gas source), ...
Sunday, July 22, 2012 at 10:08pm
Healthcare Finances
You are considering starting a walk-in clinic. Your financial projections for the first year of operations are as follow: Revenues (10,000 visit) $400,000 Wages and benefits $220,000 Rent $5,000 Depreciation $30,000 Utilities $2,500 Medical supplies $50,000 Administrative ...
Saturday, July 21, 2012 at 4:14pm
science
A car moving with constant acceleration covers the distance between two points 60 m apart in 6 seconds.Its speed point is 15 m/s.At what prior distance from the first point was the car at rest?
Saturday, July 21, 2012 at 11:39am
physics
One man hold a 3kg iron ball fall from 1.5m in the air. The ball then fall on to a table .The table is 0.5m tall. The ball bound up 3cm up and fall again. What is the impact(in Newton) the ball hit the table on the first time?
Saturday, July 21, 2012 at 1:08am
Math 1
In audition for school play, 70% passed the quality of the jurors for the first week. of those remaining, 20% were chosen. if only 7 were qualified, how many tried their luck?
Saturday, July 21, 2012 at 12:27am
chemistry
How do you calculate the theoretical cell voltage? 1) Zn|Zn^+2 (1M)| Cu|Cu^+2 (1M) okay so by looking at example this example Calculate the emf (voltage) for the following reaction: Zn(s) + Fe2+ → Zn2+ + Fe(s) Write the 2 half reactions: Zn(s) → Zn2+ + 2e Fe2+ +2e...
Friday, July 20, 2012 at 10:02am
Probability/Combinatorics
If 4 cards are drawn at random from a standard deck of cards, what are the odds, or probability, that the first three will be of the same suit and the fourth of another suit?
Friday, July 20, 2012 at 1:36am
Mathematics 1
In audition for school play, 70% passed the quality of the jurors for the first week. of those remaining, 20% were chosen. if only 7 were qualified, how many tried their luck?
Thursday, July 19, 2012 at 10:43pm
math
After its fastest rate of growth ever during the 1980s and 1990s, the rate of growth of world population is expected to slow dramatically in the twenty-first century. The function G(t) = 1.58e−0.213t gives the projected annual average percent population growth per ...
Thursday, July 19, 2012 at 10:34pm
English
Can I first self-publish my book first and then a month later I decide to publish it like normal authors do??? can I do that?
Thursday, July 19, 2012 at 3:40pm
Statistics
cant tell if i am on right track for this prababilitly hw assigment help would good! I was recently given a hw assigment dealing with the price is right's "money game". The contestant is shown nine cards on a board. Each card has one pair of numbers. One card has...
Wednesday, July 18, 2012 at 6:27pm
Calc
After its fastest rate of growth ever during the 1980s and 1990s, the rate of growth of world population is expected to slow dramatically in the twenty-first century. The function G(t) = 1.58e−0.213t gives the projected annual average percent population growth per decade...
Wednesday, July 18, 2012 at 5:49pm
US History
1.Which of the following statements about Woodrow Wilson is true? A) He wanted to place strict government controls on corporations. B) He overturned discriminatory laws against African Americans. C) He advocated eliminating the income tax. D) He opposed reforms to the banking ...
Wednesday, July 18, 2012 at 11:58am
Healthcare Finance
Metropolis Health System has received a wellness grant from the charitable arm of an area electronics company. The grant will run for twenty-four months, beginning at the first of the next fiscal year. Two therapists and two registered nurses will each be spending half of ...
Wednesday, July 18, 2012 at 11:53am
algebra
At an auto show, a car dealer asked the first 10 visitors their ages and the kinds of cars they own. The Venn diagram shows the details. A Venn diagram titled Ages of Car Owners, indicating the ages of owners of each type of car. Each of the three circles in the Venn diagram ...
Wednesday, July 18, 2012 at 11:08am
Chemistry
Describe what hard water is and how a water softening unit works. Provide balanced chemical equations to show how sodium sulphate can remove these ions (Magnesium and Calcium). The first was no problem, but I am having trouble trying to get through the second part balancing ...
Tuesday, July 17, 2012 at 4:17pm
Calculus
After its fastest rate of growth ever during the 1980s and 1990s, the rate of growth of world population is expected to slow dramatically in the twenty-first century. The function G(t) = 1.58e−0.213t gives the projected annual average percent population growth per decade...
Tuesday, July 17, 2012 at 3:47pm
algebra
Find four consecutive odd integers so that five times the sum of the first and third integers excceeds four times the sum of the second and last integers by 14.
Tuesday, July 17, 2012 at 1:51pm
Geometry
what is the third term of a recursive sequence that follows the pattern 5x-3 and has a first term x =2?
Tuesday, July 17, 2012 at 1:48pm
Math
an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, 2, 6 -1, 1, 3, 5 -2, -4, -6, -8 -2, 2, 6, 10 3 points Question 3 Write the first ...
Tuesday, July 17, 2012 at 10:29am
College Algebra
Sandy is going on a business trip to Washington state. She has a 46 inch umbrella to pack since she will be there during rainy season. She plans to pack the umbrella in the diagonal of her suitcase, but she has to buy the suitcase first. The airline company will allow a ...
Tuesday, July 17, 2012 at 12:39am
PreCalc
1) Determine the value of r (put this number in the first blank) and then determine the value of the 10th term of the geometric sequence. Do not use any decimals or mixed numbers in your answers. Reduce all fractions to lowest terms. a1 = 2 and a4 = −1/4 2)Find d and ...
Monday, July 16, 2012 at 10:49pm
PreCalc
A square has side lengths of 24 cm. It is divided into four equal sections (as shown in the first picture) and then two of those sections are shaded. One of the unshaded sections is then divided into four equal sections and two of those are shaded (as shown in the second picture)
Monday, July 16, 2012 at 9:31pm
Probability and Statistics
For questions 6 - 10 use the chi-squared distribution to test the hypothesis. 6) A restaurant owner wants to see if the business is good enough for him to purchase a restaurant. He asks the present owner for a breakdown of how many customers that come in for lunch each day and...
Monday, July 16, 2012 at 9:11pm
math
A jar contains 3 pink balls, 6 blue balls, and 3 red balls. Event A = drawing a red ball on the first draw Event B = drawing a pink ball on the second draw If two balls are drawn from the jar, one after the other without replacement, what is P(A and B) expressed in simplest form
Monday, July 16, 2012 at 1:34pm
chemistry
95.0 g of0.0 degrees celsius ice is added to exactly 100 g of water at 60.0 degrees celsius. when the temperature of the mixture first reaches 0.0 celsius the mass of the ice present is?
Sunday, July 15, 2012 at 11:33pm
astronomy
2. We ultimately want to find the amount of solar energy that hits the observer on the planet. Energy is usually measured in Joules, but there are other appropriate units of energy as well; kilowatt-hours for example, are used to measure the amount of electrical energy that we...
Sunday, July 15, 2012 at 8:23pm
Astronomu
1. There is a common misconception about why the Earth is cold in the winter and warm in the summer. Some believe that this is because the Earth, in its elliptical orbit, is closer to the Sun in the summer and farther away in the winter. The argument is that being closer to ...
Sunday, July 15, 2012 at 6:11pm
chemistry
first and second ionisation energies of mg are 740 and 1450 jmol-1 calculate percentage of mg+and mg2+ of 1g of mg absorbs 50 kj of energy
Sunday, July 15, 2012 at 1:26am
Anthropology 101
I have and the I just want know if it is correct. 1. The American class system: (Points : 1) is a closed system. is an open system.X is mostly endogamous. is an illusion, because there are no classes. 2. A dowry is: (Points : 1) when, upon marriage, the bride works for the ...
Saturday, July 14, 2012 at 9:43pm
Physics
Light waves with two different wavelengths, 632 nm and 474 nm, pass simultaneously through a single slit whose width is 4.47 x 10-5 m and strike a screen 1.70 m from the slit. Two diffraction patterns are formed on the screen. What is the distance (in cm) between the common ...
Saturday, July 14, 2012 at 5:23pm
Algebra 1
Factor first, then solve the equation. 1. 3/x+1-1/x-2=1/x^2-x-2 2. 1/y^2-16-2/y+4=2/y-4
Saturday, July 14, 2012 at 4:09pm
Research and Writing
I am trying to write an internal memorandum and must analogize two cases first. I cannot get it straight in my head what the process it for making the analogy! HELP!!
Saturday, July 14, 2012 at 2:44pm
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? ...
Saturday, July 14, 2012 at 10:40am
Physics
A positive charge +q1 is located to the left of a negative charge -q2. On a line passing though the two charges, there are two places where the total potential is zero. The first place is between the charges and is 4.03 cm to the left of the negative charge. The second place ...
Saturday, July 14, 2012 at 1:03am
Math/calculus
a toy rocket is shot into the air at the top of a building so that its height above the ground t seconds after the rocket is launched is given by the formula h(t)= -3t cubed + 6t squared + 27t feet from liftoff until the rocket crashes into the ground. Find the maximum height ...
Friday, July 13, 2012 at 9:29pm
programing
write a c++ program that prompts user's first name and last name
Friday, July 13, 2012 at 6:28am
math
Suppose 48% of the general population of thw world has blood type O, 27% blood type A, and 23% blood type B. a. what is the probability that someone has type AB blood( assume that there are only four blood types? b. Of tjere are 30 people in a room,how many would you expect to...
Thursday, July 12, 2012 at 8:03am
Foreign languages
Can you please check these sentences, Writeacher? 1) I would like to book a room with a double bed and a single bed (at a certain price) for person (sharing) which (alsoincludes breakfast and dinner for seven nights. (Can you help me express this sentence better?) 2) Prior to ...
Wednesday, July 11, 2012 at 4:36am
AP Calculus
Find the sum of the first n terms of the sequence. The sequences are either arithmetic or geometric. 13. -1, 11, -121, ...; n = 9 A. 235,794,769 B. 429,981,696 C. -429,981,696 D. 196,495,641 E. -196,495,641 F. -235,794,769 I know that n = # of terms (9) d = -11 a = -1 formula...
Tuesday, July 10, 2012 at 9:58pm
Calculus
Find the first 4 terms and the 8th term of the recursively-defined sequence. 4. v1 = 0.75 and vn = (-2)vk-1 for n>1 A. 0.75, 1.5, -3, 6; -192 B. -1.5, -3, -6, -12; 192 C. -1.5, -3, -6, -12; -192 D. 0.75, 1.5, 3, 6; -192 E. 1.5, 3, 6, 12; 192 F 0.75, -1.5, 3, -6; 192 Can ...
Tuesday, July 10, 2012 at 5:24pm
AP Calculus
Find the first 4 terms and the 8th term of the recursively-defined sequence. b1 = 2 and bk+1 = 3bk, for k>0 A. 6, 18, 54, 162; 13,122 B. 3, 6, 9, 12; 24 C. 5, 8, 11, 14; 26 D. 6, 12, 24, 48; 768 E. 2, 6, 18, 54; 4374 F. 2, 4, 8, 16; 256 Thanks!
Tuesday, July 10, 2012 at 1:40pm
Physics
What are the first, second, and third frequencies audible from a 20 cm long organ pipe when (A) only one end is open and when (B) both ends are open. The speed of sound through the air inside the organ pipe is 343m/s. (Hint: if a harmonic does not exist, it would not be heard.)
Tuesday, July 10, 2012 at 12:41pm
Math PLEASE HELP PLEASE PLEASE PLEASE
Question 1 Write the first four terms of the sequence whose general term is given. an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, ...
Tuesday, July 10, 2012 at 10:42am
Principles of Management - Effective Management
Please double check my answers please! 1. a team manager is resolving the conflicts that exist among the members of his team in an organization. this is an example of: a. planning b. organizing c. leading d. controlling answer C 2. a manager at a grocery store is trying to ...
Tuesday, July 10, 2012 at 10:16am
English
Posted by rfvv on Tuesday, July 10, 2012 at 7:58am. 1. We booked a book on the Internet. 2. We reserved a book on the Internet. (Are both the same in meaning?) English - Writeacher, Tuesday, July 10, 2012 at 8:19am I've never heard the first one. The second one is correct...
Tuesday, July 10, 2012 at 9:01am
Math
Question 1 Write the first four terms of the sequence whose general term is given. an = 3n - 1 Answer 2, 3, 4, 5 2, 5, 8, 11 -2, -5, -8, -11 4, 7, 10, 13 3 points Question 2 Write the first four terms of the sequence whose general term is given. an = 2(2n - 3) Answer -6, -2, ...
Tuesday, July 10, 2012 at 8:36am
reading
the reason the test questions and answers is up there because its all wrong answers on purpose for cheaters. when i first started i passed two test by myself. then the last three test try to cheat to use the answers and failed three test then retook them by myself and passed. ...
Monday, July 9, 2012 at 10:44pm
Physics
Two balls are involved in a completely inelastic collision. The first ball has a mass of 0.25 kg and an initial velocity of 9.27 m/s in the x-direction The second ball has a mass of 0.50 kg with an initial velocity of 2.61 m/s in the -x-direction. What is the speed of the two ...
Monday, July 9, 2012 at 7:21pm
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