Questions Asked on
March 5, 2008

  1. Phys 1200

    I am doing my HW and I have a few questions I don't understand. Each has their own answers but I have to find how they got it... #3 How much kinetic energy must an 80-kg high jumper generate to move his center of mass from 0.9m above the ground to clear

    asked by Deb
  2. CALCULUS-URGENT- no one will respond!!!

    find the radius and interval of convergence for the series the series from n=1 to infinity of ((-1)^(n+1)*x^n)/n! I did the ratio test so I had the Lim as n approaches infinity of -x/(n+1), but this is 0, giving no radius, so I think I did something

    asked by laura
  3. CALCULUS-URGENT- no one will respond!!!

    find the radius and interval of convergence for the series the series from n=0 to infinity of ((-1)^n*x^n)/(n+1)

    asked by jane
  4. CALCULUS-URGENT- no one will respond!!!

    we know the series from n=0 to infinity of c(sub n)*3^n converges 1. TRUE OR FALSE the series from n=0 to infinity of c(sub n)*2^n must converge 2. TRUE OR FALSE The series from n=0 to infinity of c(sub n)*4^n must converge 3. TRUE OR FALSE the series from

    asked by jane
  5. science

    a clear type of quartz: rock -------

    asked by kelli
  6. Human Service Administration

    Can you explain why integrated information management systems are important in human service organizations. Can you give me an example? Thank you.

    asked by Kimberly
  7. statistics

    A random sample of n=16 scores is obtained from a population with a mean of µ= 80 and a treatment is administered to the sample. After treatment, the sample mean is found to be M=82. a)Assuming the sample contained n=16 individuals, measure the size of

    asked by Laurie
  8. Science

    1. Why does North America and Asia consume so much petroleum? I would guess that it is because these two areas produce so many things. 2. What factors would prevent petroleum trade between regions? I'm really not sure but i am guessing it has something to

    asked by Danica
  9. physics

    An electron is released from a distance of 2 cm from a proton. How fast will the electron be going when it is .5 cm from the proton? It says to use the work energy thereom, but I don't understand how to use it. any help would be greatly appreciated!

    asked by Jessica
  10. Physics

    Two concentric conducing spheres of radii 4 cm and 12 cm are given equal but opposite charges of 6 x 10^-8C. How much energy is stored in the system? How would I go about in beginning to solve this problem?

    asked by Jessica
  11. maths

    find the indefinite integral of the following f(t)=6cos(3t)+5e^-10t

    asked by cecelia
  12. maths

    find the indefinite integral of the following g(x)=21-12x^3/x (x>0)

    asked by cecelia
  13. maths

    finf the definite integral of the following h(u)=cos^2(1/8*u) (8th*u)

    asked by cecelia
  14. maths

    find the stationary points of the following f(x)=x^3-3x^2-24x-7

    asked by cecelia
  15. maths

    use the quotient rule to differentiate the following k(t)=e^3t/4-t^2 (-2

    asked by cecelia
  16. religion

    where did judiasm originate?

    asked by Anonymous
  17. Physics

    A moving 4.80 kg block collides with a horizontal spring whose spring constant is 243 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal

    asked by Courtney
  18. Mathematics

    A Ladder AB, of length 13m, rests against a vertical wall with its foot on a horizontal floor at a distance of 5meters from the wall. When the top of the ladder slips down a distance x meters on the wall, the foot of the ladder moves out x meters. Find x.

    asked by Nazharia
  19. Mathematics

    A Pendulum 45cm long swings through a vertical angle of 30degrees. Find the distance of the altitude through which the pendulum bob rises. (I couldn't find this answer either :\ but can anyone please please help me! And if you can, can you also write the

    asked by Nazharia
  20. Mathematics

    A tree is "x"meters high. The angle of elevation of its top from a point P on the ground is 23degrees. Form another point Q, 10meters from P and in line with P and the foot of the tree, the angle of elevation is 32degrees. Find "x". (i need a way on how to

    asked by anonymous
  21. Chemistry

    This has to do with the reactivity series for metals (K,Na,Ca,Mg,Al,Zn,Fe,Pb,Cu,Au,Ag) Which metal is most likely to undergo the conversion M(s)->M(n+)(aq)+ne- What type of reaction is this?-oxidation ? Which metal ion is most likely to undergo the

    asked by Anonymous
  22. English

    I have to write an essay on gender segregation in secondary schools-the case for. Any tips on how to start it off, set it out, make sure it's structured, whatever... Any tips would be so great!

    asked by Anonymous
  23. Physical Education

    if you have completed your degree from a university in Alabama, but decided to move to another state, what would you need to be able to teach in that state. Include everything you would need to teach in that state; degrees, exams, certifications, etc. Also

    asked by Anonymous
  24. MATH

    A tree is "x"meters high. The angle of elevation of its top from a point P on the ground is 23degrees. Form another point Q, 10meters from P and in line with P and the foot of the tree, the angle of elevation is 32degrees. Find "x". (Please don't give me

    asked by Nazharia
  25. economics

    Can somone tell me what are the factors that indicate monopoly plsss??? 10x alot :D

    asked by ilenia
  26. astronomy

    An Extreme Ultrviolet imager telescope is used to observe the sun and corona.it has four filters which are sensitive to different wavelenghts of UV radiation.These are: filter: 17.1nm 19.5nm 28.4nm 30.4nm Question: which filters are most likely to be of

    asked by amy21
  27. physics

    How much would a 60-kg person weight on the Moon where the gravitational field has a magnitude of 1.6 N/kg?

    asked by Marty
  28. physics

    The flywheel of a steam engine runs with a constant angular velocity of 220 rev/min. When steam is shut off, the friction of the bearings and of the air stops the wheel in 2.7 h. (a) What is the constant angular acceleration, in revolutions per

    asked by greg
  29. Algebra

    4x+2>6x-1 > This should be a greater then or equal to sign in the equation. I am getting -3/-2 The book says 3/2

    asked by G
  30. Economics - Demand: Multiple Choice

    A switch on the part of the public from large cars to smaller cars should cause the demand curve for gasoline to tend _______________. a) not be affected b) shift to the right c) rise d) both b and c e) shift to the left I'm confused by this question

    asked by Anonymous
  31. Business

    Does anyone have any ideas on writing a paragraph for a fictional company?

    asked by greatdanelola
  32. Spanish

    I need someone who know a little bit of Spanish. I am having trouble learning the jugar verbs. I need someone who knows them and is willing to teach me. Thanks, Taylor

    asked by Taylor
  33. Physics

    A motorcycle has a constant speed of 24.0 m/s as it passes over the top of a hill whose radius of curvature is 129 m. The mass of the motorcycle and driver is 330 kg. Find the magnitude of (a) the centripetal force and (b) the normal force that acts on the

    asked by Zach
  34. Physics

    A centrifuge is spinning at 3600 rev/min, and when turned off, it rotates 50 times before coming to a stop. A) What is the initial angular velocity? B) What is the angle (in radians) that the centrifuge passes through before stopping? C) What is the

    asked by Mike
  35. English

    choose the sentence that has a subject complement the nurse felt the pulse I felt much better the day ended with many surprises we can't believe without seeing her

    asked by Anonymous
  36. Physics

    A centrifuge is spinning at 3600 rev/min, and when turned off, it rotates 50 times before coming to a stop. A) What is the initial angular velocity? B) What is the angle (in radians) that the centrifuge passes through before stopping? C) What is the

    asked by Mike
  37. Algebra

    Students are given a list of ten vocabulary words to learn. In how many ways could four of the words be listed on a test? 10*4 40 ways

    asked by Jon
  38. Algebra

    Evaluate C(12,10). C(n,r)=n!/(n-r)!r! =12!/(12-10)!10 =12!/2!2 =12*11/2*1 =66

    asked by Jon
  39. Algebra

    If the probability that an event will occur is 8/13, what are the odds that it will occur? 8:13

    asked by Jon
  40. Algebra

    A red die and a blue die are tossed. What is the probability that the red die shows an odd number and the blue die shows a 1 or 2? (3/6)*(2/6)= 6/36 answer 1/6

    asked by Jon
  41. Latin

    I am studying Catullus 101 in Latin. I have to learn the poem off by heart. I have done the scansion, but I'm not sure how that's supposed to help with the actual speaking it...

    asked by Anonymous
  42. Physics

    If you weighed 112 N on the Moon where g=1.6N/kg, how much would you weigh on Earth?

    asked by Marty
  43. Intro to Probability

    MY MAIN PROBLEM IS FIGURING OUT WHAT DISCRETE DISTRIBUTION TO USE, BERNOULLI, BINOMIAL, DISCRETE UNIFORM, GEOMETRIC NEGATIVE BINOMIAL, OR POISSON. Every time I choose one, it's the incorrect one. Is there some way I can easily find out which one to use.

    asked by amelie
  44. Algebra

    From a group of 6 men and 4 women, a committee of 3 is to be selected at random. Find P(at least 2 women). It might be a little out of order but this is what I got. C(10,2) (10*9*8*7*6*5*4*3*2*1)/(8*7*6*5*4*3*2*1*2*1) =45 C(6,2) (6*5*4*3*2*1)/(2*1) =360

    asked by Jon
  45. English

    please help i have searched and read and still cant find the answers i am looking for. which sentences contains three prepostions? a. Ben has done without a car for six months. b. The quick brown fox jumped over the lazy dog. c. The boys might have

    asked by Anonymous
  46. chemistry

    the number of molecules in 6.843*10^-2 kg of Al(NO3)3 is: and this is what i have done so far... 1st i converted the kg to g which is 6.843*10^-5. then i figured out the moles:6.843*10^-5/213.01 i got 3.21*10^-7. i then multiplied this number by avogadro's

    asked by tina
  47. Social Studies

    How many PEOPLE have served in World War I??

    asked by Nick
  48. simple social studies

    how much did soldiers get paid if they joined the continental army in 1776?

    asked by Brooke
  49. Algebra

    x=1 is the day tickets go on sale. Tickets=-0.2x^2+12x+11 use the quadratic equation to determine the last day that tickets will be sole. (Write your answer in terms of the number of days after ticket sales begin) MY ANSWER: 60 days Stuck on this portion:

    asked by avincent
  50. othello paper

    I was wondering if someone could proof read the begining of my paper and give me feedback...thanks! In an attempt to warn females against falling under the control of a patriarchal society, progressive feminist Adrienne Rich defines patriarchy as “the

    asked by laura
  51. physics

    When methane burns, energy is released as heat and light. Does the energy released weigh anything?

    asked by Aston
  52. geography

    I couldn't find where bell lived and worked when i googled bell. Alexander Graham Bell:?::Florence Nightingdale:Italy

    asked by Frances
  53. geography

    Queen Victoria:Prince Albert::Queen Elizabeth II::?

    asked by Frances
  54. Biology

    Why must biologists be able to distinguish homologous traits from analogous traits?

    asked by Mike
  55. Physics help please

    A 40-kg child is standing still on a 10-kg skateboard, which is also at rest. If the child walks to the right at 2 m/s, what is the resulting velocity of the skateboard?

    asked by Deb
  56. physic

    A rotating star expands to become a red giant, increasing its average radius from one million km to 100 million km without changing its mass. What happens to the velocity of a piece of this star located at the average radius? any help would be great THANKS

    asked by Madison
  57. acid and alkalis

    TRUE OR FALSE car battery acid is so strong thatit is very,very dangerous.

    asked by italina
  58. Physical science

    I have done this problem over and over again, but I still keep getting it wrong. What do I need to do? A 1.04x10^3 kg car accelerates uniformly from rest to 12.0 m/s in 2.16 seconds. What is the work done on the car in this time interval? Answer in units

    asked by Christy
  59. geography

    Hungary:Budapest::Ireland:?

    asked by Frances
  60. geography

    Lithuania:Latvia::Belgium:?

    asked by Frances
  61. geography

    I looked this up yesterday and could't find the answer. Mozart:?::Michelangelo:Italy

    asked by Frances
  62. geography

    I have no idea what so ever as to what to do. what would i even google for this? Roman Catholic:Italy::?:Sweden

    asked by Frances
  63. ratios and rates

    Replace each variable with the number that correctly completes each statement: 10 words/2 minutes x 60 minutes/1 hour = x words/1 hour What is x?

    asked by lauren
  64. geography

    River Shannon:?::Vistula River:Poland

    asked by Frances
  65. science

    A + B -----> C is an example of a A) double-displacement reaction B) synthesis reaction C) single-displacement reaction D) redox reaction E) decomposition reaction

    asked by jake
  66. math

    Hi, I have a math problem that I can't understand how to write the equation for. The question says: a ball is thrown upwards from an initial height of 20 meters at an initial velocity of 10 meters per second. Write an equation for the height (h) of the

    asked by Michelle
  67. physic

    I need help with this question How many calories does a 75-kg woman use in walking up stairs to a point that is 20m higher? answer is 3571 I got to show how they got the answer.

    asked by kadyn
  68. physics

    An electric charfe of -3 C is moved from a position where the electric potential is 1 V to a position where the electric potential is -6V. What is the chsange in potential energy of the charge with this change in position? I know that change in PE =

    asked by Andrea
  69. geography

    Ferdinand V:Spain::Henry VIII:?

    asked by Frances
  70. Health

    Would you be more likely to catch a cold or the flu after failing an exam or after providing long-term care for an ill family member?

    asked by Jennifer
  71. geography

    Finland:Helsinki::Netherlands:?

    asked by Frances
  72. geography

    Lira:Turkey::?:Great Britain

    asked by Frances
  73. phys. help

    A 30-kg child coast down a hill on a 20-kg sled. She pushes off from the top of the hill with a velocity of 1 m/s. At the bottom of the hill, she is moving 4 m/s. If there is no heat generated when she slides down, how high is this hill? thank u

    asked by Aulivia
  74. geography

    couldn't find this answer Roman Catholic:Italy::?:Scotland

    asked by Frances
  75. Science

    Name three different agents of erosion that might move a rock once it has been weathered?

    asked by Travis
  76. Chemistry

    1) Assume that the reference half-cell is changed to a standard mercury-mercury (II) half-cell. a) What would be the reduction potential of a standard chlorine half-cell. c) What would be the cell potential of a standard chlorine-nickel cell. 2) For each

    asked by Anonymous
  77. earth

    how does convection work

    asked by brandon
  78. physics

    One kg of water is moving 2 m/s as it goes over a dam. At the base of the dam, 13m below, how fast is that water going if air friction can be neglected? (ans: 16.25m/s) B: if the water does not go straight over the dam, but instead goes through the

    asked by Kadyn
  79. geography

    okay, ive got like 9 questions! but i could not find them! 1) Loch Ness: Scotland:: Lake of Lucerne: ? 2) Alexander Grahm Bell: ? :: Florence Nightingale: Italy 3) Queen Victoria: Prince Albert:: Queen Elizabeth 11: ? 4) Mozart: ? :: Michelangelo: Italy 5)

    asked by tori
  80. Algebra

    Two cards are drawn from a standard deck of cards. Find the probability that a king or a red card is drawn?(4/52)*(26/52) 104/2704 answer 0.038

    asked by Jon
  81. Chemistry Check

    Write chemical equations to represent the cathode, anode, and net cell reactions. 1) Cd | Cd(NO3)2 || Ag(NO3)2 | Ag Reduction at Cathode: Cd2+ + 2e- ---> Cd Oxidation at Anode: [Ag ---> Ag+ + e-] x2 Cd2+ + 2Ag ---> Cd + 2Ag2+ 2) Pt | IO3-,H+ || Zn2+ | Zn

    asked by Anonymous
  82. Algebra

    For questions 1 and 2 use the following info. The numbers are in this order: 456,306,160,363,376,935,54,349 1)Find the mean, median ,mode, and standard deviation of the data. Round to the nearest hundredth, if nessesary. mean= added all numbers and divided

    asked by Jon
  83. Trigonometry

    Find a vector perpendicular to the plane containing the points (0,1,2), (-2,2,4), and (-1,-1,-1) step by step

    asked by Anonymous
  84. Chemistry

    i don't understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy

    asked by johnny
  85. Algebra

    The time a group of high school students arrive home from school each day was found to be normally distributed. The mean time was 3:15pm and the times had a standard deviation of 15 minutes. What is the probability that a student chosen at random arrives

    asked by Jon
  86. math

    rules on adding and dividing fractions

    asked by Darian
  87. science

    what are electric charges?

    asked by Kobi
  88. geometry

    finding the area in square feet

    asked by Darian
  89. Algebra

    During a clothing sale, 1/4 of the store merchandise is reduced in price. Find the probablility that 3 of 5 randomly-selectled shirts have reduced prices. my guess is to multiply 1/4 and 3/5 but that has to be wrong

    asked by Jon
  90. Physics

    To stop a car, first you require a certain reaction time to begin braking. Then the car slows down at a constant rate. Suppose that the total distance moved by your car during these two phases is 56.7 m when its initial speed is 85.0 km/h, and 24.4 m when

    asked by Lance
  91. geometry

    Please Help Mark uses 1 pt 9fl oz and then 2 pt 10fl oz from a container of film developer that holds 3 qt. How much of the developer remains?

    asked by Sherri
  92. Spanish

    Im trying to say chocolate covered strawberries, would it be el chocolate fresas?

    asked by Emily
  93. human services

    Make a list of the top ten characteristics needed in a knowledge- and value-centered manager. What is the managers’ responsibility in creating a successful organization? Give an example that supports your position. What role do managers play in helping

    asked by kimberly
  94. Chemistry

    As the temperature of a substance decreases, the average kinetic energy of its particles a- Remains the same b- Decreases c- Increases

    asked by John
  95. chemistry

    According to Solubility guidelines chemistry reference table, which of these salts is least soluble in water? a- PbCl2 b- RbCl c- LiCl d- FeCl2

    asked by John
  96. chemistry

    Which must be a mixture of substances? a- Solid b- Liquid c- Gas d- Solution

    asked by John
  97. Economics

    I need to write a 300 word essay that argues for or against international trade. My class reading is vague. I was wondering if anyone could suggest some web sites to research.(Preferably unbiased)

    asked by Marinda
  98. Chemistry

    An increase in the average kinetic energy of a sample of copper atoms occurs with an increase in a- Concentration b- Pressure c- Volume d- Temperature

    asked by Charles
  99. PHYSICS!!!

    The flywheel of a steam engine runs with a constant angular velocity of 220 rev/min. When steam is shut off, the friction of the bearings and of the air stops the wheel in 2.7 h. (a) What is the constant angular acceleration, in revolutions per

    asked by greg
  100. Social Studies

    What were 5 steps involved in Indiana becoming a state?

    asked by Ally
  101. Gen Chem 2

    The air within a piston equipped with a cylinder absorbs 555 J of heat and expands from an initial volume of 0.12 L to a final volume of 0.87 L against an external pressure of 1.0 atm. What is the change in internal energy of the air within the piston in

    asked by Jessica
  102. Intro to Probability

    MY MAIN PROBLEM IS FIGURING OUT WHAT DISCRETE DISTRIBUTION TO USE, BERNOULLI, BINOMIAL, DISCRETE UNIFORM, GEOMETRIC NEGATIVE BINOMIAL, OR POISSON. Every time I choose one, it's the incorrect one. Is there some way I can easily find out which one to use.

    asked by Amelie
  103. math

    the sum of the digits of a two digit number is 9. if the digits are reversed, the new number if 63 grater than the original number. what is the original number?

    asked by dillon
  104. algebra 1

    a high school wrestling mat must be square with 38-foot sides and contain two circles as shown. suppose the inner circle has a radius of "s" feet and the outer circle's radius is nine feet longer than the inner circle. *write an expression for the area of

    asked by trixie
  105. calculator question.. please answer ASAP

    how do i type in tan^2 or cos^2 on the calculator?.. everyime i press tan or cos, parentheses automatically come up with it

    asked by Anonymous
  106. Chemistry

    According to Solubility guidelines chemistry reference table, which of these salts is least soluble in water? a- PbCl2 b- RbCl c- LiCl d- FeCl2

    asked by Charles
  107. chemistry

    According to Solubility guidelines chemistry reference table, which of these salts is least soluble in water? a- PbCl2 b- RbCl c- LiCl d- FeCl2

    asked by Charles
  108. chemistry

    An increase in the average kinetic energy of a sample of copper atoms occurs with an increase in a. concentration b. pressure c. volume d. temperautre

    asked by Charles
  109. Chemistry

    Which sample contains particles in a rigid, fixed, geometric pattern? a. CO2 b. HCl c. KCl d. H2O

    asked by John
  110. Math

    How many feet are in 2 3/4 miles? (Hint: 1 mile=5280 feet) How do I write a proportion to solve this problem. Please help, thank you.

    asked by Plse Help
  111. algebra

    Cystic fibrosis is inherited from parents only if both have the abnormal CF gene. Children of two parents with the CF gene will either be affected with the disease, a carrier but not affected or not have the gene. -Write an expression for the genitec

    asked by astrid
  112. Chemistry

    A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. what is the new pressure when the temperature is changed to 336K and the Volume is decreased to 450. milliliters? a- 0.177 b- 14.1 c- 5.64 d- 4.43

    asked by John
  113. Chemistry

    What is the molarity of a solution that contains 0.50 mole of NaOH in 0.50 liter of solution? a-0.50 b-0.25 c-2.0 d-1.0

    asked by John
  114. Chemistry

    What is the molarity of a solution containing 20 grams of NaOH in 500 milliliters of solution? a-0.04M b-0.5M c-1M d-2M

    asked by John
  115. physics

    The human eye is most sensitive to light having a frequency of about 5.3*10^14 Hz, which is in the yellow-green region of the electromagnetic spectrum. How many wavelengths of this light can fit across the width of your thumb, a distance of about 2.0 cm?

    asked by rick
  116. Science

    Metals can be hammered into thin sheets because they are___________? Its in a crossword puzzle and i thought it was ductile but that doesnt fit.

    asked by Emily
  117. algebra 1...urgent

    a high school wrestling mat must be square with 38-foot sides and contain two circles as shown. suppose the inner circle has a radius of "s" feet and the outer circle's radius is nine feet longer than the inner circle. *write an expression for the area of

    asked by trixie
  118. geometry

    find the ara of a regular octagon inscribed in a circle with a radius of 1 cm.

    asked by ashley
  119. Chemistry

    1) Assume that the reference half-cell is changed to a standard mercury-mercury (II) half-cell. a) What would be the reduction potential of a standard chlorine half-cell. c) What would be the cell potential of a standard chlorine-nickel cell. 2) For each

    asked by Alex
  120. Chemistry Check

    Write chemical equations to represent the cathode, anode, and net cell reactions. 1) Cd | Cd(NO3)2 || Ag(NO3)2 | Ag Reduction at Cathode: Cd2+ + 2e- ---> Cd Oxidation at Anode: [Ag ---> Ag+ + e-] x2 Cd2+ + 2Ag ---> Cd + 2Ag2+ 2) Pt | IO3-,H+ || Zn2+ | Zn

    asked by Alex
  121. Chemistry

    What is the molarity of a solution containing 20 grams of NaOH in 500 milliliters of solution? a-0.04M b-0.5M c-1M d-2M

    asked by Jena
  122. Chemistry

    What is the molarity of a solution that contains 0.50 mole of NaOH in 0.50 liter of solution? a-0.50 b-0.25 c-2.0 d-1.0

    asked by denny
  123. Chemistry

    A sample of helium gas has a volume of 900. milliliters and a pressure of 2.50 atm at 298 K. what is the new pressure when the temperature is changed to 336K and the Volume is decreased to 450. milliliters? a- 0.177 b- 14.1 c- 5.64 d- 4.43

    asked by denny
  124. chemistry

    for the reaction: 4NH3+5O2=4NO+6H2O; 15.0g of NH3 and 27.5g of O2 were reacted. a). which is the limiting reactant? b).how many moles of NO are formed from the limiting reactant in the above reaction. what would be the first step in this problem?

    asked by tina
  125. Science

    this is in a crossword puzzle, what is the simplest type of a pure substance? there are 7 spaces and the second letter is a L.

    asked by Emily
  126. french

    why is it not la grande-mere but la grand-mere since it is feminine?

    asked by michelle
  127. algebra

    Aki's Bicycle Design has determined that when x hundred bicycles are built, the average cost per bicycle =0.9x^2-1.7x+10.861, when C(x) is in hundreds of dollars. How many bicycles should the shop build to minimize the average cost per bicycle?

    asked by Becky
  128. Accounting

    Assume that October's credit sales were $35,000. In the space below record the journal entry for the provision for uncollectible accounts under each of the following independent assumptions: a. The Allowance for Doubtful Acccounts before adjustment has a

    asked by Misty
  129. Chemistry

    I need help distinguishing between nucleophiles and electrophiles. Like one of the examples I am given shows methanal, chloroethane, and methanamine. Now it says methanal is electrophilic because the carbonyl group is polar since the more electronegative

    asked by Raj
  130. Pre-Algebra

    How do you calculate an area of a triangle again?

    asked by Joy
  131. Physics

    A light source, S, is located 2.9 m below the surface of a swimming pool and 1.7 m from one edge of the pool. The pool is filled to the top with water. At what angle does the light reaching the edge of the pool leave the water?

    asked by Anonymous
  132. geometry

    find the ara of a regular octagon inscribed in a circle with a radius of 1 cm.

    asked by ashley
  133. algebra 1

    A high school wrestling mat must be a square with 38-foot sides and contain 2 circles. Suppose the inner circle has a radius of s feet, and the outer circle's radius is 9 feet longer than the inner circle. What is an expression for the area of the square

    asked by Jenny
  134. Pre-Algebra

    A triangle is enlarged by a scale factor of 10/3. a) If the perimeter of the copy is 36 meters, find the perimeter of the original triangle using the proportion 10/3. b) If the area of the copied triangle is 48 meters squared, use a proportion to find the

    asked by Joy
  135. essay help

    whats a really good way to start a conclusion paragraph??

    asked by jordan
  136. Math

    On a radar screen the distance between two planes is 3 1/2 inches. If the scale is 1 inch on the screen to 2 miles in the air, what is the actual distance between the two planes. Please help! thank you. Do I use x represent a distance. I'm stuck. Help!!!

    asked by Plse Help
  137. bio II

    The molecule that provides energy for active transport is?

    asked by jake
  138. Honors Literature

    ~Dante's Inferno~ Canto 24:Why is there so much emphasis in this canto on the labor, the intense effort, required if the travellers are to continue downward to the center of hell? How does this concentration reflect upon Dante's task as a writer of epic

    asked by Jennifer
  139. grammar

    A ESSAY OF SHOULD WE TRY TO KOW OUR FUTURE

    asked by rashi
  140. Literature

    ~Dante Inferno~ Canto 28: At the end of this canto, Bertran de Born, French troubadour poet and false counselor to King Henry II of England, explains that he is punished with the usual "law of counter-penalty" ("contrapasso" in Italian). How does

    asked by Bill
  141. Chemistry

    I don't understand this paragraph, can anyone explain it to me? If a large amount of energy is needed to remove an electron from an atom, the arrangement of electrons in that atom is considered to be especially stable. Thus, a high first ionization energy

    asked by johnny