1. shortest fence

    this is my last question from applications of derivatives! A 216m^2 rectangular pea patch is to be enclosed by a fence and divided into two equal parts by another fence parallel to one of the sides. What dimensions for the outer rectangle will require the

    asked by Jen on November 18, 2006
  2. TO ALL STUDENTS

    Please remember these things: 1. This is a homework help website; please put your subject (math, science, English, or ??) in the subject line to make it faster for each teacher to find those questions in his/her areas. 2. Please include in your post the

    asked by Writeacher on October 9, 2006
  3. History

    3. all of the following are true about mexico city except 1 point A) it faces traffic problems B) it has pollution C) it has water shortages D) 200,000 people live there 4. A reason why many people move from small villages to Mexico City is to 1 point A)

    asked by Le Sexy Male on April 22, 2015
  4. calculus

    Find the sum of the series (-1)^n (5^(2n))/n! 1. sum = e^25 2. sum = e^−5 3. sum = 5 4. sum = e^5 5. sum = 25 6. sum = e^−25

    asked by Bob on September 30, 2010
  5. math

    The maker of a candy that comes in the color Blue, Red, White, Green, Pink and Tan. The proportion for Blue is 0.2, Red is 0.3, White is 0.1, Green is 0.2, Pink is 0.1 and Tan is 0.1. A single candy is drawn at random. Find the probability that a candy has

    asked by Ana wheeler on October 18, 2012
  6. Math

    A man walks a certain distance at a certain speed. If he walks 1/2 an hour faster than his usual speed, he will take one hour less to reach his destination. But if he walks 1 km an hour slower than his usual speed, he will take 3hours more to reach his

    asked by Anne on July 5, 2007
  7. maths

    Wendy and Carol each bought the same laptop at the same price. In addition, Wendy bought a flash drive and Carlo bought an infrared mouse. The flash drive cost $60. Find the cost of the infrared mouse if Carol spent $1810 and Wendy spent $1840.

    asked by TT on May 14, 2015
  8. Precalculus

    The roots of \[z^7 = -\frac{1}{\sqrt{2}} - \frac{i}{\sqrt{2}}\]are $\text{cis } \theta_1$, $\text{cis } \theta_2$, $\dots$, $\text{cis } \theta_7$, where $0^\circ \le \theta_k < 360^\circ$ for all $1 \le k \le 7$. Find $\theta_1 + \theta_2 + \dots +

    asked by SAM on January 27, 2017
  9. Precalculus

    The roots of \[z^7 = -\frac{1}{\sqrt{2}} - \frac{i}{\sqrt{2}}\]are $\text{cis } \theta_1$, $\text{cis } \theta_2$, $\dots$, $\text{cis } \theta_7$, where $0^\circ \le \theta_k < 360^\circ$ for all $1 \le k \le 7$. Find $\theta_1 + \theta_2 + \dots +

    asked by SAM on January 27, 2017
  10. College Algebra

    Problem: In certain signal detection problems (e.g. radar or sonar) the probability of false alarm (FA) (i.e., of saying that a certain signal is present in the data when it actually is not) is given by: ∞ pFA = ∫ _______1_______ x^p/2-1 e-x/2 dx η

    asked by Anonymous on November 20, 2010
  11. Business Management and Leadership

    Select an organization that you have worked for or one that you are familiar with and find the goals the organization has set. Many times this information can be found on the company's website. Search the Library and the Internet and research goal setting.

    asked by Mizzy Kay on May 4, 2009
  12. Educational Technology

    1. Why is it important to have good study skills? (A)You will sleep better (B)You will learn more efficiently---- (C)You will have less free time (D)You will impress your parents 2. Why is it important to know how much time you spend on tasks? (A)so you

    asked by Rose on January 18, 2018
  13. business management & leadership

    Select an organization that you have worked for or one that you are familiar with and find the goals the organization has set. Many times this information can be found on the company's website. Search the Library and the Internet and research goal setting.

    asked by vicmine on April 5, 2009
  14. thermo

    For the following problem... I found the second pressure by solving P1V1/T1 = P2V2/T2. The Volumes is const so those cancel and then i am able to find the P2. From there i looked at the 1st law and came up with delt U = Qin which = mCvdelta T but that is

    asked by jody on June 17, 2007
  15. Business Math

    John’s Bikes uses the retail inventory method. Sales at retail were $120,000.00. Net purchases were $68,000.00 at cost and $124,000.00 at retail. Beginning inventory was $32,000.00 at cost and $76,000.00 at retail. Using the retail method, what was their

    asked by Murph on April 11, 2018
  16. Math Calculus

    Three sides of a fence and an existing wall form a rectangular enclosure. The total length of a fence used for the three sides is 240 ft. Let x be the length of two sides perpendicular to the wall as shown. Write an equation of area A of the enclosure as a

    asked by Livia on August 19, 2010
  17. ECON

    A bank vice-president declared that the probability that the bank’s funds were being embezzled was 0.70 and that the probability that an embezzlement would be discovered by the bank examiner was 0.90. Given that the bank examiner does not find the

    asked by Nina on September 19, 2012
  18. Math

    Can someone help me verify if this is correct? Gasoline usage for compact cars in Canada is a normal distribution with a mean of 33.3 km/l and with standard deviation of 7.3 km/L. Round your answers to one decimal place. a) What percentage of compact cars

    asked by Jay on April 17, 2011
  19. physics

    A Coast Guard cutter detects an unidentified ship at a distance of 19.0 km in the direction 15.0° east of north. The ship is traveling at 22.0 km/h on a course at 40.0° east of north. The Coast Guard wishes to send a speedboat to intercept and

    asked by Mia on September 1, 2012
  20. Math

    Can someone help me verify if this is correct? Gasoline usage for compact cars in Canada is a normal distribution with a mean of 33.3 km/l and with standard deviation of 7.3 km/L. Round your answers to one decimal place. a) What percentage of compact cars

    asked by Jay on April 17, 2011
  21. PHYSICS

    1...At what temp. of 0^C steel rod and copper rod have length of 800.1 & 99.9 respectively. At what temp. will the 2 rods have the same length. coeff.of linear expansion Copper-.000017 steel-.000013 2...The length of a brass bar increase from 4.001 into

    asked by EM on March 13, 2011
  22. MRU

    suppose a population of nursing students heights is normally distributed with a population mean of 166 cm and a population stanadr deviation of 7.5cm if a female is randomly selected from this population, what is the probability that she will have a height

    asked by Mike on October 31, 2011
  23. Math

    n a survey, one out of three people named blue as their favorite color. Two out of seven named red. If 1,092 people were included in the survey how many named neither blue nor red as their favorite color? 416 432 540 512 2. The triangles below are similar

    asked by Loomin on December 5, 2017
  24. government

    does anyone know any website that I can find about Government law to answer the following question? [c] Comrade Nikolai, a communist, wishes to hold a Saturday rally in LeBard Stadium at Orange Coast College, but several Costa Mesa citizens object. [d]

    asked by dt on November 9, 2008
  25. Math

    Can someone please help me out with these? What is the rate of inflation of an item with a Consumer Price Index of 246.8 in 1991 and 362.4 in 1992? Round your answer to the nearest tenth. 0.681 0.319 0.468 0.536 Determine the future value of an annuity due

    asked by Cathy on November 9, 2009
  26. essay novel study need ideas and advice

    Jane Austen's novels Pride and prejudice and Persuasion both illustrate the challenges of being a woman in the 1900s. The need to find security, obtain wealth, status and marriage becomes necessary for survival and fulfillment. Unfortunatly, Austen shows

    asked by cin on November 7, 2008
  27. Algebra

    Sound intensities, I, are often compared with the threshold of human hearing, I_0, which is about 10^-12 watts per meter squared. The relative intensity, R, of a sound is given by the equation: R = 10log(I/I_0) i. The intensity of a whisper is about 300

    asked by Anonymous on March 11, 2019
  28. Math ; please please help.

    1. Explain in detail how to determine the value of the independent variable in a quadratic relation if the value of the dependent variable is known. Please check my answer - You would substitute the value for the dependent variable, then you would solve

    asked by Amanda on April 9, 2008
  29. math

    Disks of radius 4 cm are cut from a rectangular plastic sheet of length 84 cm and width 24 cm. How many complete disks can be cut out? Find (a) the total area of the discs out (b) the area of sheet wasted I did it but the answers on the back of the book do

    asked by Mathew on February 15, 2013
  30. math

    a toy car store is ordering 3,000 remote control cars.the store can order the cars in sets of 10.how many sets of 10 does the store need to order? a.30 b.300 c.3,000 d.30,000 a.what information do you need to use? b.what do you need to find? c.how can

    asked by VR on September 30, 2013
  31. physics

    A projectile of mass 0.777 kg is shot from a cannon, at height 6.6 m, as shown in the figure, with an initial velocity vi having a horizontal component of 7.8m/s. The projectile rises to a maximum height of ∆y above the end of the cannon’s barrel and

    asked by steve on October 4, 2011
  32. Simultaneous equation

    Ann is older than Betty. Their ages in years are such that twice the square of Betty's age subtracted from the square of Ann's age gives a number equal to 6 times the difference of their ages. Given also that the sum of their ages is equal to 5 times the

    asked by HELP! on June 2, 2016
  33. Math

    The ratio of the perimeter of triangle PQR to the perimeter of rectangle ABCD is 5 : 9. All in centimeters Triangle (sides) PQ: (x-3) PR: (3x-5) QR: (4x+3) Rectangle (sides) AB: (2x+2) BC: (4x - 1/2) [AB is longer than BC] a. Write algebraic expressions

    asked by Azuka on November 4, 2018
  34. Math

    You order twelve burritos to go from a Mexican restaurant, five with hot peppers and seven without. However, the restaurant forgot to label them. You pick three burritos at random. Find the probability of the events (as a reduced fraction and as a percent

    asked by Josh on June 6, 2016
  35. Math

    A fishing boat leaves port at 12 miles per hour at a bearing of 70∘ for 5 hours, then turns to a bearing of 130∘ at 9 miles per hour for 5 hours, and finally changes to a bearing of 50∘ at 9 miles per hour for 2 hours. At this point, the boat heads

    asked by wes on November 11, 2018
  36. maths

    All the students in a school are made to stand in rows so as to form an equilateral triangle. The first row consists of one student, the second row 2 students, third row 3 students and so on. Had there been 90 more students, the total number of students

    asked by rajshekhar on February 1, 2010
  37. Math

    1)Adam scored x points 2)Imran scored 3 points fewer than Adam 3)Shakeel scored twice as many points as Imran Together they scored 39 points. a)How do i write in terms of x, an expression for the number of points scored by Shakeel? b)How do i write an

    asked by Patterson on June 19, 2009
  38. algebra

    6. Find the equation of each parabola described below. a) parabola with vertex (0,0) and the focus (0,7) b) parabola with focus (-3,0) and directrix x=3 c) parabola with vertex (3,3) and directrix x=-1 d) parabola with focus (-2,-1) and directrix y=5 e)

    asked by samantha on June 15, 2008
  39. stats

    A jar contains 7 black balls and 25 red balls. You take 2 out without replacing them. Find a)the probability of drawing 2 red balls in a row, b) the probability of drawing a red ball, then a black ball, c) the probability that the two balls will be of

    asked by Sally on December 18, 2014
  40. math

    Marcella and Ruben bought some party supplies. Marcella bought 3 packages of balloons and 4 packages of favors for $14.63. Ruben bought 2 packages of balloons and 5 packages of favors for $16.03. Find the price of a package of balloons.

    asked by lee on March 19, 2018
  41. Maths

    3 part question. 1. 4 peaches and 3 grapefruit cost £1.30. Write down an algebraic equation to illustrate this. 2. 2 peaches and 4 grapefruit cost £1.20. Write down an algebraic equation to illustrate this. 3. Find the cost of 3 peaches and 2 grapefruits

    asked by Gavin on October 29, 2007
  42. maths

    If A=1+r^a+r^2a+r^3a+.......................to infinity B=1+r^b+r^2b+................to infinity then find a/b=????? Is r^2a supposed to be r^(2a) or a*r^2? In other words, is the a part of the exponent? what the heck is that? exponents are like 2 cubed or

    asked by nikhil on November 11, 2006
  43. Math

    Nathan can purchase 5 lemons for $2. Which is one way to find the number of lemons Nathan can buy with $20? A.add 6 and 2 and then multiply the sum by 20 B.add 2 and 20 and then multiply the sum by 6 C.divide 6 by 2 and then add the quotient to 20 D.divide

    asked by Andrew on February 8, 2012
  44. Math

    Out of 40 student in a class 16 study English ,22study account & 26 eco. 5 study English & eco ,14 Account & eco 2 study all the three subject if each student studies at least one of the three subject. Find the number of student who study.

    asked by Ravi Yadav on August 13, 2016
  45. Calculus

    Let f(x) = 2x^{3}+9. Find the open intervals on which f is increasing (decreasing). Then determine the x-coordinates of all relative maxima (minima). 1. f is increasing on the intervals: 2. f is decreasing on the intervals: 3. The relative maxima of f

    asked by Daniel on November 4, 2014
  46. math

    ibrahim has a bag containing five red balls,six yellow balls and four white balls , the ball is pick at random from the bag.find the probability that: (a))red or white ball ? (b) yellow or red ball ? (c) not red

    asked by Anonymous on April 19, 2015
  47. English 9

    Find adv. and word it modifies No matter how loudly he pounded, he still could not hear the notes. loudly (adv) pounded (word it modifies not(adv) modifies could hear Still (adv) does it modify (could hear)? Is this correct???

    asked by Sweet Pea on September 13, 2014
  48. Economics - Theory of the Firm

    If Average Variable Cost AVC = 10 + Q and P = 50. Find: Total Cost TC, Total Fixed Cost TFC, Total Variable Cost TVC, Average Total Cost ATC, Average Fixed Cost AFC

    asked by Student55 on March 14, 2011
  49. Statistics

    Half of a set of the parts are manufactured by machine A and half by machine B. Four (.04) of all the parts are defective. Six percent (6%) of the parts manufacture on machine A are defective. Find the probability that a part was manufactured on machine A,

    asked by nounou on July 16, 2010
  50. book

    tell me your favorite book and what about it is. I have to take a survey. My favorite book is The Notebook by Nicholas Sparks because I love to read love stories and see that there is such a thing as true love. Thanks Katelyn. Can you also tell me brief

    asked by Justin on September 21, 2006
  51. Math

    Anna and bob play a game in which Anna begins by rolling a fair dice, after which bob tosses a fair coin. They take turns until one of them wins. Anna wins when she rolls a 6. Bob wins when the coin lands on heads. What is the probability that Anna will

    asked by Sam on May 31, 2010
  52. Math/Probability

    Anna and bob play a game in which Anna begins by rolling a fair dice, after which bob tosses a fair coin. They take turns until one of them wins. Anna wins when she rolls a 6. Bob wins when the coin lands on heads. What is the probability that Anna will

    asked by Ally on May 31, 2010
  53. Statistics Help

    Six candidates for a new position of vice-president for academic affairs have been selected. Three of the candidates are female. The candidates’ years of experience are as follows. Candidate Experience Female 1 Female 2 Female 3 Male 1 Male 2 Male 3 5 9

    asked by Stuart on March 29, 2009
  54. Algebra

    A motorist was to travel from town A to town B, a distance of 80 miles. He traveled the first 24 minutes at a certain rate; traffic then increased and for the next 6 minutes he averaged 10 miles per hour less than his original speed; then traffic eased up

    asked by Jane on October 24, 2013
  55. Pre-Calc

    A ferris wheel is 63 feet tall when it reaches its highest point at 8 seconds. At the bottom of the ride, you are 3 feet off the ground. So how high off the ground will you be 5 seconds after the ride starts? Write a function f so that f(t) will equal how

    asked by John on January 4, 2015
  56. Algebra

    Please check for me. 7p - 7/p divided by 10p-10/5p^2 = 7p^2 6x - 6/x * 6x^2/8x-8 = 9x/2 I'm not sure how to answer this one. x/2 divided by 9/x + 5 I think it's x(x + 5) / 18 Without grouping symbols () it is impossible to understand the problems. The ^

    asked by Samantha on November 3, 2006
  57. physics torque and shelf

    When a wood shelf of mass 6.1 kg is fastened inside a slot in a vertical support, the support exerts a torque on the shelf. The board is 32cm wide by 3cm tall. the slot is 2 cm wide (3cm tall)on the lefthand side. So there are three vertical forces. A)

    asked by kelsi on May 22, 2009
  58. physics

    A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 50.0°. The index of refraction of quartz is 1.455 at 660 nm (red light), and its index of refraction is 1.468 at 410 nm (violet light). Find the

    asked by Lara on April 1, 2013
  59. Calculus

    Find the area cut off by x=4 from the hyperbola x^2/9-y^2/4=1. Answer is 4.982 in the book. I have proceeded as under: Y=2/3*sqrt(x^2-9) and rhe reqd. area is double of integral 2/3*sqrt(x^2-9) from 3 to 4. Int= 2/3*[xsqrt(x^2-9)/2 –

    asked by MS on March 28, 2014
  60. calcules

    A company wishes to run a utility cable from point A on the shore to an installation at point B on the island. The island is 6 miles from the shore. It please explain it for me step by step without link it to a similar question: costs $400 per mile to run

    asked by jasmine on March 25, 2014
  61. Calculus I

    *Optimization problem* [I don't know how to get to the answer] Problem: You have a cylindrical can with radius 4cm and height 10cm. Inside is a marble with a radius that has to be larger than 0 but less than 4 cm (even the largest marble will fit

    asked by Ken on November 12, 2012
  62. physics

    A hydraulic press has an input cylinder 1 m in diameter and an output cylinder 2 meters in diameter. Assuming 100% efficiency, find the force exerted by the output piston when a force of 10 Newtons is applied to the input piston. pounds If the input piston

    asked by Anonymous on April 1, 2012
  63. Math

    In an election of two candidates the successful candidate secured 236 votes more than his rival.If the rival candidate obtained 1/6th of the total votes secured by the successful one in addition to his own votes, he would have won the elections by 42

    asked by Danica on July 4, 2007
  64. Chemistry 11

    Find the percent composition of a compound containing sodium and chlorine if 24.34g of the compound contains 13.45g of sodium. My work: Molar mass of NaCl: MNa +MCl = 22.99 g/mol + 35.45 g/mol = 58.44 g/mol Percent composition of Na: 22.99 g/mol / 58.44

    asked by Christina on November 12, 2014
  65. Math

    Flying into the wind, a plane takes 8 h to travel 5432 km from Paris to Montreal. The same plane flying with the wind from Montreal to Paris takes only 7 h. Find the speed of the plane and the speed of the wind. Can you plz answer this sir I really would

    asked by gagan on January 22, 2009
  66. Algebraic word problem

    Three friends Alex, Ben, and Casey presented a young mathematician with a puzzle. They told him that the sum of their ages add up to 98 years. Double Alex’s age and add to Ben’s gives 84 years. The sum of three times Alex’s age and twice Casey’s

    asked by Mike on April 10, 2017
  67. College Algebra

    A gift store is making a mixture of almonds, pecans, and peanuts, which sells for $4.50 per pound, $3 per pound, and $4 per pound, respectively. The storekeeper wants to make 50 pounds of mix to sell at $4.38 per pound. The number of pounds of peanuts is

    asked by Gabbi on April 11, 2017
  68. math

    There are 70 woman in a club. Each plays at least one of the following games: volleyball, basketball and table tennis. 20 play volleyball only,10 play basketball only and 6 play table tennis only. 4 play all the three games and an equal number play two

    asked by Douglas on December 22, 2016
  69. math

    Two cyclist left a sports ground at the same time. The first cycled on the bearing of 30 degree and the second cycled on the bearing of 329 degree. After the first cyclist had covered twice as long as the distance covered by the second cyclist, the

    asked by ken on May 11, 2019
  70. math

    A ship leaves POrt P and sails 28km away on bearing of 70 degrees to POrt Q. The ship then turns on a bearing of 160 degrees and sails 21km to POrt R. Find angle PQR, calculate the distance PR, Determine the bearing of R from P. angle PQR = 180 degrees -

    asked by Pamela on February 22, 2016
  71. statistics

    4. John Rengel is the Quality Assurance Supervisor for Vino Supremo Vinyards. He knows that 10 percent of each box of corks is undersized. (6 pts) a) If he were to randomly select 120 corks from the next box, then how many of these corks would John expect

    asked by Lise on May 8, 2014
  72. math

    The 6th grade classes have started a contest to collect cans for recycling. The first class to reach 500 cans will win. The chart below shows the two classes in the lead. How many cans does each class have left to meet their goal? show the work . find how

    asked by raj on March 24, 2014
  73. Animal Farm

    According to Benjamin, what is the one unalterable law? How does his idea compare to actual conditions in the Soviet Union today? --------------------------------------------------------------------------------------- This is the passage this question is

    asked by Emily on December 7, 2008
  74. Please math help

    A: I am choosing an integer. I then subtract 10 from the integer, take the opposite of the result, add -3, and find the opposite of the new result. My result is -3. What is the original number? B: Judy wants to do the activity in part (a) with her

    asked by KG on September 25, 2014
  75. diversity

    What is the social challenges african americans have to face and find most difficult to overcome In my opinion as a European-American, one of the biggest challenges faced by African-American young people is the bias among some African-Americans against

    asked by Lejora on May 18, 2007
  76. Trigonometry

    if cos x=2/3 and x is in quadrant 4 find tan(x/2),sin(x/2),and cos(x/2) i got sin(x/2)=squr 1/6 tan(x/2)=squr 2/6 cos(x/2)=squr 5/6

    asked by Ryan on April 5, 2016
  77. maths

    if alpha and bita are the zeros of polynomial p(x=3xsquare+2x+1,find the polynomial whose zeros are 1-alpha/1+alpha and 1-bita/1+bita

    asked by Anonymous on September 20, 2012
  78. Calculus

    If y=3/(sinx+cosx) , find dy/dx A. 3sinx-3cosx B. 3/(sinx+cosx)^2 C. -3/(sinx+cosx)^2 D. 3(cosx-sinx)/(sinx+cosx)^2 E. 3(sinx-cosx)/(1+2sinxcosx)

    asked by Anonymous on March 14, 2015
  79. Math

    If α and β are two angles in Quadrant II such that tan α= -1/2 and tan β = -2/3, find cos(α+β) Work: cos(α+β) = [ 1 - (tan α)(tan β) ] / [ 1 + (tan α)(tan β)] cos(α+β) = [ 1 - (-1/2)(-2/3) ] / [ 1 + (-1/2)(-2/3)] cos(α+β) = [ 1 - 1/3 ] / [

    asked by Sophie on June 9, 2009
  80. Maths

    A horse and a cart together cost 1600.if the cost of the cart is one third the cost of the horse.find the cost of cart and horse sepretely

    asked by Shehzad on August 22, 2017
  81. urgent -plsee

    the cost of 6 cows are same as cost of 8 goats. if cost of 9 cows and twice numbered goats is rs. 9000, then find the cost of 3 cows and 6 goats?

    asked by Anahad on December 8, 2012
  82. english

    1. In Edgar Allan Poe’s “The Cask of Amontillado,” the literary device of foreshadowing is used when Montresor tells Fortunato (1 point) “You are a man to be missed.” “A draught of this Medoc will defend us from the damps.” “You were not to

    asked by fronzilla on May 9, 2019
  83. Math - Credits & finance charges

    On the May 1 billing date, Mary had a balance due of $970.60 on her credit card. The transactions during the following month were: May 5 Payment $400.00 May 10 Charge: airline tickets $381.00 May 22 Charge: hotel $270.60 May 25 Charge: florist $60.20 The

    asked by Sunny on March 10, 2008
  84. physics

    A cylindrical glass of radius r=3 cm is full of salt water of height h=10 cm with the water's refraction index changing linearly from the bottom n1=1.401 to the top n2=1.400. A flashlight is positioned so that light shines horizontally onto the glass. If

    asked by raj on February 21, 2013
  85. physics

    A block of mass M hangs from a rubber cord. The block is supported so that the cord is not stretched. The unstretched length of the cord is L0 and its mass is m, much less than M. The "spring constant" for the cord is k. The block is released and stops at

    asked by Stephen on December 1, 2009
  86. Math

    4.The following table shows the high and low temperatures predicted for Dallas during the week beginning Monday, August 29 2011. Which day has the biggest difference between the high and low temperatures? A.Mon D.Tue C.Wed D.Sun Monday High temp 106 Low

    asked by Jerald on September 16, 2013
  87. PreCalculus

    Problem 1.) Three friends want to share a circular 16-inch pizza equally by exactly only two parallel cuts. How far from the center must the cuts be? Hint: The pizza is a circle of radius 8 inches. Problem 2.) You are at the southernmost point of a

    asked by Jackie on March 24, 2015
  88. chemistry

    The figure shows a cube of air at pressure 1.0 atm above a hot surface on Earth. Contact with the hot surface causes the volume of the air to expand from 2.00 × 105 L to 2.20 × 105 L by the transfer of 8.2 × 106 J of heat. Assume the systems are

    asked by Morgan on January 31, 2015
  89. economics

    Two people enter a bus. Two adjacent cramped seats are free. Each person must decide whether to sit or stand. Sitting alone is more comfortable than sitting next to the other person, whihc is more comfortable than standing. a.) Suppose that each person

    asked by jo on October 21, 2010
  90. physics

    1. the pilot of a private plane flies 20km in a direction 60 degrees north of east,then 30km straight east,then 10km straight north.how far and in what direction is the plane from the starting point. 2. two forces acts on a point object as follows 100N at

    asked by oluwatoyin on October 30, 2011
  91. physics

    1. the pilot of a private plane flies 20km in a direction 60 degrees north of east,then 30km straight east,then 10km straight north.how far and in what direction is the plane from the starting point. 2. two forces acts on a point object as follows 100N at

    asked by oluwatoyin on October 30, 2011
  92. physics

    1. the pilot of a private plane flies 20km in a direction 60 degrees north of east,then 30km straight east,then 10km straight north.how far and in what direction is the plane from the starting point. 2. two forces acts on a point object as follows 100N at

    asked by oluwatoyin on October 30, 2011
  93. chemistry

    Titration of Vitamin C tablets Prior to titration, Vitamin C samples were dissolved in dilute sulfuric acid, treated with a 60mL portion of 0.3 M KIO3 and excess KI. Given equations: (1) ascorbic acid + I2 + 2H2O dehydroascorbic acid + 2I^- + 2H3O^+ (2)

    asked by mimi--PLEASE HELP VERY CONFUSED on November 23, 2009
  94. Calculus

    A construction company wants to build a rectangular enclosure with an area of 1000 square feet by fencing in three sides and using its office building as the fourth side. Your objective as supervising engineer is to design the enclosure so that it uses the

    asked by Joey on August 9, 2011
  95. physics

    please tell me if this is done correctly Find the final equlibirum temperature when 10.0 g of milk at 10.0 degrees C is added to 1.60 * 10^2 g of coffee with a temperature of 90.0 degrees C. Assume the specific heats of coffee and milk are the same as for

    asked by y912f on February 23, 2009
  96. finance

    Jiminy's Cricket Farm issued a 30-year, 7.2 percent semiannual bond 9 years ago. The bond currently sells for 85.5 percent of its face value. The book value of this debt issue is $107 million. In addition, the company has a second debt issue, a zero coupon

    asked by Sara on May 9, 2016
  97. Physics

    Two planes are about to drop an empty fuel tank. At the moment of release each plane has the same speed of 135 m/s, and each tank is at the same height of around 2.00km above the ground. Although the speeds are the same, the velocities are different at the

    asked by Anonymous on June 6, 2012
  98. Statustics

    A survey found that women’s heights are normally distributed with mean 63.4 in and standard deviation 2.5 in. A branch of the military requires women’s heights to be between 58 in and 80 in. a. Find the percentage of women meeting the height

    asked by Angie on August 4, 2014
  99. math

    Sam received a $290 discount loan to purchase a stereo. The loan was offered at 16% for 90 days. Find the interest in dollars and the proceeds for the following problem. The interest is $12.60, $11.60, or $10.60 ? The proceeds are $279.40, $278.40, or

    asked by Kendra on January 26, 2010
  100. mojo

    A hydrogen atom is in its elevnth excited state, n = 12. Using the Bohr model of hydrogen, find the linear momentum. You want to solve for the electron velocity and multiply that by the electrn mass. There are many ways to do this. One would be to get the

    asked by physics on August 20, 2007

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