Questions Asked on
April 16, 2012

  1. Chemistry

    If the literature value for the ΔHfus of water is 6.01 kJ/mol, how many kJ of heat energy would be required to completely melt 130 g of ice at 0°C?

    asked by Sarah
  2. psychology

    humanistic therapy acknowledge unconscious forces and --- as a source of personal difficulties environment negative thoughts genetics psychosis please help

    asked by kevin
  3. Chemistry

    Assume equal concentrations, rank these solutions by pH HBrO, Ca(OH)2, HCl, KOH, NH3 Here's how I ranked it: highest: Ca(OH)2 > HCl > KOH > NH3 > HBrO lowest is this correct? if not please tell me why!

    asked by Katherine
  4. psuchology

    Currently there are --- types of cognitive therapy in common practice. 2 4 6 cognitive therapy is rarely used today please help

    asked by kevin
  5. chemistry

    a 500ml sample of o2 gas at 24 degrees celsius was prepared by decomposing a 3% aqueous solution of hydrogen peroxide, in this presence of a small amount of manganese catalyst by the reaction 2H2O2>2H2O+O2. The oxygen thus prepared was collected by

    asked by Michelle
  6. Chemistry

    Calculate the amount of heat released in the complete combustion of 8.17 grams of Al to from Al2O3 at 25 celcius and 1 atm. The delta enthalphy change in the heat of formation for Al2O3 = 1676 KJ/mol 4Al(s) + 3O2(g) --> 2Al2O3(s)

    asked by Philip
  7. physics

    Skater 1 has a mass of 45 kg and is at rest. Skater 2 has a mass of 50 kg and is moving slowly at a constant velocity of 3.2 m/s [E]. Skater 3 has a mass of 75 kg and is moving quickly at a constant velocity of 9.6 m/s [E]. Which skater experiences the

    asked by shan
  8. physics

    If a 80 lightbulb emits 4.0 of the input energy as visible light (average wavelength 550 ) uniformly in all directions, estimate how many photons per second of visible light will strike the pupil (4.0 diameter) of the eye of an observer 3.0 away. 1. I

    asked by sarah
  9. RMS Speed

    A gas is at 20°C. To what temperature must it be raised to triple the rms speed of its molecules? Ans: 2364oC I don't get how they got the answer. Please help!

    asked by Jenny
  10. College Chemistry

    A sample of an iron alloy contains 92.1g Fe, 2.59g C, and 1.59g Cr. Calculate the percent by mass of each component present in the alloy sample.

    asked by Michelle
  11. Chemistry

    At 25 degrees Celsius all of these are true for a neutral solution : pH = 7.00, pOH = 7.00, and [H+] = [OH-] is that correct? For a neutral, aqueous solution regardless of temperature.. would the only correct statement be [H+] = [OH-]? pH = 7.00 and pOH =

    asked by Katherine
  12. engineering science

    The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the mirror. If the height of the car is 1.6 m, how tall is its image?

    asked by lindiwe
  13. Chemistry

    For the chemical reaction CH3Br + OH- CH3OH + Br-, which of the following would speed up the reaction? increasing the CH3Br concentration reducing the OH concentration cooling the reactant mixture Please help with this question. I appreciate it. Thank you.

    asked by Lucy
  14. Chemistry

    How would you find the pH of a solution prepared by mixing 50 mL of 0.125 M KOH with o.050 L of 0.125 M HCl?

    asked by Anne
  15. college chemistry

    Followed by the total volume. Calculate the molarity of this solution: 0.521 mol NaCl;125 mL

    asked by michelle
  16. physics

    calculate the net charge on a substance consisting of a combination of 3.0X10^13 protons and 8.6X10^13 electrons.

    asked by jandy
  17. Math

    Estimate the number of pints In 445 ounces?

    asked by Marie
  18. chemistry

    need formula to this. Carbon monoxide reacts with oxygen to produce carbon dioxide. If 3.0 Liters of carbon monoxide at STP, how many liters of oxygen are required to run the reaction

    asked by bill
  19. Organic Chem

    Outline a separation scheme for isolating pure isopentyl acetate from the reaction mixture.

    asked by Peter
  20. chemistry

    What volume of nitrogen at 215 degress celcius and 715 mmHg would be required to react with .100 moles of hydrogen to produce ammonia? N2+3H2--> 2NH3

    asked by Anonymous
  21. Chemistry

    A 125-g piece of metal is heated to 288 degrees celsius and dropped into 85.0 g of water at 26 degrees celsius. If the final temperature of water and metal is 58 degrees celsius, what is the specific heat of the metal?

    asked by Alicia
  22. chemistry

    A liquid was analyzed to be 54.5% C, 9.10% H, and 36.4% O. An empty flask, whose mass was 45.32 g, when filled with the vapor of the liquid at 735mm Hg and 99.2°C had a mass of 46.05 g. The volume of the flask was found to be 263.2 mL. empirical formula

    asked by josh
  23. physics

    Two fi gure skaters are moving east together during a performance. Skater 1 (78 kg) is behind skater 2 (56 kg) when skater 2 pushes on skater 1 with a force of 64 N [W]. Assume that no friction acts on either skater. T / I (a) Determine the acceleration of

    asked by shan
  24. pre cal

    What is the center of the conic whose equation is x^2 + 2y^2 - 6x + 8y = 0 2.Which one of the following equations represents a hyperbola? (5 points) A) 3x^2 + y^2 + 12x - 7 = 0 B) 3x^2 + 3y^2 + 12x - 7 = 0 C) 3x^2 + y + 12x - 7 = 0 D) 3x^2 - 3y^2 + 12x - 7

    asked by Mecie
  25. physics- help please !!1

    A toy rocket moving vertically upward passes by a 2.2m -high window whose sill is 7.0m above the ground. The rocket takes 0.17s to travel the 2.2m height of the window part a) what was the launch speed of the rocker ? assume the propellant is burned very

    asked by john
  26. Math

    Nico was stunned when he opened the mail. Here was a check for $322.50! This was the interest he earned on his investment. One year ago Nico had been given $5,000. His parents made him put it in the bank and save it for college, but they said he could keep

    asked by Erica
  27. physics

    Humans can hear sounds with frequencies up to about 20.0 kHz, but dogs can hear frequencies up to about 40.0 kHz. Dog whistles are made to emit sounds that dogs can hear but humans cannot. If the part of a dog whistle that actually produces the high

    asked by Romy
  28. AP Chemistry

    A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e- Cu(s) I2(s) + 2 e- 2 I -(aq) The cell is operated at 298 K with [Cu+ ] = 2.3 M and [I - ] = 3.3 M. (a) Determine E for the cell at these concentrations. (b) If [Cu+ ]

    asked by Brittany
  29. physics

    in a bizzare but harmless accident, superman fell from the top of the eiffel tower. how fast was superman traveling when he hit the ground 7.80 seconds after falling

    asked by Anonymous
  30. college algebra

    a cub measures n inches on each edge. If a slice 1 inch thick is cut from one face of the cube and then a slice 3 inches thick is cut from another face of the cube, the resulting solid has a volume of 1560 cubic inches. Find the dimensions of the original

    asked by Missy
  31. Physics help!!

    A Styrofoam bucket of negligible mass contains 1.60 kg of water and 0.425 kg of ice. More ice, from a refrigerator at -14.8 degree C, is added to the mixture in the bucket, and when thermal equilibrium has been reached, the total mass of ice in the bucket

    asked by Joey
  32. Trig

    How do you find the exact circular function value of csc(-23pi/6)? I don't know how to do the pi symbol on the keyboard.

    asked by Bailie
  33. college algebra

    A propane tank has the shape of a circular cylinder with a hemisphere at each end. The cylinder is 6 feet long and volume of the tank is 5pie cubic feet. Find, to the nearest thousandth of a foot the length of the radius x.

    asked by Missy
  34. chemistry

    Given that the specific heat capacities of ice and steam are 2.06 J/g degrees celsius and 2.03 J/g degrees celsius, respectively, and considering the information about water given, calculate the total quantity of heat evolved when 10.0g of steam at

    asked by Anonymous
  35. income tax

    Jonathan is married, files a joint return, and has one child. During 2011, Jonathan has $85,000 of taxable income. He has $20,000 of positive AMT adjustments and $28,000 of tax preferences. Since Jonathan rents his home (pays no mortgage interest) and

    asked by Addy
  36. area hexagon

    Find the area of a regular hexagon with an apothem 10.4 yards long and a side 12 yards long. Please help

    asked by kevin
  37. Chemistry

    Given that the specific heat capacities of ice and steam are 2.06 J/g degrees celsius, respectively, and considering the information about water given in exercise 16, calculate the total quantity of heat evolved when 10.0g of steam at 200. degrees celsius

    asked by Rachael
  38. chemistry

    what mass of ethanol(C2H5OH) will be required to prepare a 2.00m solution in 8.00kg of water?

    asked by maria
  39. Physics

    The human ear can detect sounds with frequencies between 20 Hz and 20kHz. Find the largest and smallest wavelengths the ear can detect, assuming that the sound travels through air with a speed of 343 m/s at 20°C. smallest ___m largest____m

    asked by Steve
  40. Physics 100

    A 355-g piece of metal at 48.0 degree celsius is dropped into 111g of water at 15.0 degree celsius.If the final temperature of the mixture is 32.5 degree celsius what is the specific heat of the metal?

    asked by Sue
  41. AP Chemistry

    A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e- Cu(s) I2(s) + 2 e- 2 I -(aq) The cell is operated at 298 K with [Cu+ ] = 2.3 M and [I - ] = 3.3 M. (a) Determine E for the cell at these concentrations. (b) If [Cu+ ]

    asked by Brittany
  42. Chemistry

    What volume of carbon monoxide gas (at STP) is needed when 1.35 Moles of oxygen gas react completely in the following equation. 2CO + O2 > 2CO2 please show your work I'm having trouble with Gas Stoichiometry.

    asked by Randy
  43. Chemistry

    Complete and balance the following equation: NO2{-} + Cr2O7{2-} = Cr{3+} + NO3{-}

    asked by Steven
  44. Geometry

    In the standard (x,y) coordinate plane, if the x-coordinate of each point on a line is 4 less than twice its y-coordinate, what is the slope of the line?

    asked by Meghan
  45. maths

    a box containing pens,nickels,and dimes has 13 coins with a total value of 83 cents.how many coins of each type are in the box?

    asked by Dalcy
  46. Pharmacology

    the ration 3:100 would properly be expressed in fraction form as

    asked by Kim
  47. Math

    A math teacher is randomly distributing 15 rulers with centimeter labels and 10 rulers without centimeter labels. What is the probability that the first ruler she hands out will have centimeter labels and the second ruler will not have labels.

    asked by John
  48. finance

    Winnebagel Corp. currently sells 29,400 motor homes per year at $44,100 each, and 11,760 luxury motor coaches per year at $83,300 each. The company wants to introduce a new portable camper to fill out its product line; it hopes to sell 20,580 of these

    asked by angiza
  49. CHEMISTRY

    Suppose 1400 J of heat energy are put into a sample of liquid water at 23°C, and the final temperature of the water is 78°C. How many grams of water are present?

    asked by Sarah
  50. Chemistry

    Consider the voltaic cell illustrated in the figure, which is based on the cell reaction: Zn(s)+Cu^2+(aq) -> Zn^2+(aq)+Cu(s) Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 52.0g of copper is

    asked by Steven
  51. Trigonometry

    A standard doorway measures 6 feet 8 inches by 3 feet. What is the largest dimension that will fit through the doorway without bending?

    asked by Zayn
  52. math

    Sonya spent 3/8 of her money and then had $15.00 left. How much money did Sonya originally have?

    asked by lily
  53. Chemistry

    A 1.00-L solution saturated at 25°C with calcium oxalate (CaC2O4) contains 0.0061 g of CaC2O4. The solubility constant (Ksp) for this salt is [CaC2O4=128.09 g/mol]

    asked by Anne
  54. Algebra 2

    Abelardo wants to create several different 7-character screen names. He wants to use arrangements of the first 3 letters of his first name(abe, followed by arrangements of 4 digits in 1984, the year of his birth. How many different screen names can he

    asked by Tom
  55. chemistry

    why would it be undesirable to wash the crude halide with aqueous sodium hydroxide

    asked by lia
  56. Chemistry

    Complete and balance the following equation: NO2{-} + Cr2O7{2-} = Cr{3+} + NO3{-}

    asked by Steven
  57. Chemistry

    Consider the voltaic cell illustrated in the figure, which is based on the cell reaction: Zn(s)+Cu^2+(aq) -> Zn^2+(aq)+Cu(s) Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 52.0g of copper is

    asked by Steven
  58. physics

    A toy car (200 g) moves by shooting a plastic ball (50 g) horizontally out the back. The average acceleration of the car is 1.2 m/s 2 [E] and there is negligible friction acting on each part of the toy. T / I C (a) Draw an FBD for each object. (b) Identify

    asked by shan
  59. physics

    at what velocity must a conductor 75mm long cut a magnetic field of flux density 0.6T if an emf of 9V is to be induced in it? Assuming the conductor, the field and the direction of motion are mutually perpendicular.

    asked by frank fred
  60. MATH

    I have been trying to do this problem for a couple of days but i cant seem to get the answer. Any help would be greatly appreciated. For each of the following forms determine whether the following limit type is indeterminate, always has a fixed finite

    asked by bobby
  61. physics

    AM radio signals are electromagnetic waves transmitted between frequencies of 550 kHz and 1600 kHz. Find the range of wavelengths for these signals. largest ___m smallest___m

    asked by Jeff
  62. physics

    a 200g tennis ball approaches a racket at 20m/s is in contact with the racket for 0.008s and the ball rebounds at 4m/s. find the average force that the racket exerted on the ball

    asked by sugin
  63. Algebra

    You go to the video store to rent 5 movies for the weekend. Movies rent for $2 and $3. You spend $13. How many $2 movies did you rent? ~Mish

    asked by Mishka
  64. chemistry

    What volume of nitrogen at 215 degress celcius and 715 mmHg would be required to react with .100 moles of hydrogen to produce ammonia? N2+3H2--> 2NH3

    asked by Anonymous
  65. math

    you are making a scale drawing with a scale of 2in.=17ft. elplain how you find the length of the drawing of an object that has an actual lenght of 51ft

    asked by Taylor
  66. physics

    Ice of mass 11.0 kg at 0.00° C is placed in an ice chest. The ice chest has 3.00 cm thick walls of thermal conductivity 1.00 10-5 kcal/s · m · C° and a surface area of 1.25 m2. (a) How much heat must be absorbed by the ice before it melts? (b) If the

    asked by Alex
  67. physics

    Comic-book superheroes are sometimes able to punch holes through steel walls. (a) If the ultimate shear strength of steel is taken to be 2.90 109 Pa, what force is required to punch through a steel plate 2.10 cm thick? Assume the superhero's fist has

    asked by Anonymous
  68. history

    How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism? HELP!!!

    asked by Britt
  69. world history

    What was the cause of the peloponnesian War ? A.Greeks sought revenge for the Persian Wars. B.Sparta wanted control of the powerful Ahenian army. C.A spartan murdered the Athenian ruler Pericles. D.Many Greeks outside of Athens resented Athenian domination

    asked by ciara
  70. chemistry

    The dH for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO (g) reacts completely. 2CO(g) + O2(g) --> 2CO2(g)

    asked by tank
  71. Chemistry

    1.Write a mathematical equation that can be used to calculate the concentration of the HCl solution after the standardization procedure (Titration #1). 2. Using LeChatelier’s principle, predict whether [OH-] in the calcium hydroxide/0.050 M NaOH solution

    asked by Cassie
  72. physics

    To recharge a 12 V battery, a battery charger must move 2.7 × 105 C of charge from the negative terminal to the positive terminal. How much work is done by the battery charger? Answer in units of J

    asked by Anonymous
  73. Calculus

    A electric circuit board has equally spaced parallel wires with connections at points A, B, C. If the length of AB=3.42 cm, what is the length of BC?

    asked by Liz
  74. physics

    A ship mapping the depth of the ocean emits a sound of 37 kHz. The sound travels to the ocean floor and returns 0.65 s later. (a) How deep is the water at that location? m (b) What is the wavelength of the wave in water? cm (c) What is the wavelength of

    asked by Anonymous
  75. Chemistry

    Balance the equation. Cu + HNO3 --> Cu(NO3)2 + NO2 + H2O I'm having a little trouble getting this equation to balance. Thank you in advance! :)

    asked by Lindsey
  76. physics

    A copper plate has a hole cut in its center. When the plate is heated, the hole gets smaller. When heat is added to a system, the temperature must rise. When the pendulum of a grandfather clock is heated, the clock runs more slowly. Cold objects do not

    asked by anonymous
  77. math

    if you threw a 6-sided die 48 times, about how many times would you expect it to land on a number greater than or equal to 4.

    asked by Celest
  78. Biology

    GENETICS PRACTICE PROBLEMS Worth 10 points each problem is either right or wrong 1. In humans, assume that brown eyes (B) are dominant over blue eyes (b). A blue eyed man, both of whose parents were brown eyed, marries a brown eyed woman whose father was

    asked by Vicky
  79. calculus

    A 160-lb man carries a 25-lb can of paint up a helical staircase that encircles a silo witha radius of 20 ft. If the silo is 90 ft high and the man makes exactly three complete revolutions, how much work is done by the man against gravity in climbing to

    asked by Bryant
  80. CHEMISTRY

    A student calibrates his/her calorimeter. S/he performs part 1 as instructed. The data are: 99.2 g water at 36.0°C are added to 97.3 g water in the calorimeter at 16.0°C. The final temperature is 26.0°C. Calculate the heat capacity of the calorimeter in

    asked by Sarah
  81. math

    What mystery number has 8 digits; none of the digits are the same. It is evenly divisible by 10. The value of one of the digits is 80,000. The digits in the millions place is the largest 1-digit odd number. The digit in the thousands place is 3 less than

    asked by Adonis
  82. physics

    the energy received by the earth from the sun is 1400w/m2. Assuming that the sun is a black body radiator and the ratio of the radius of the earth's orbit to the sun's radius is 216. Calculate the surface temperature of the sun. Stefan constant =

    asked by frank fred
  83. Social Civics

    Does anyone know how to prepare for the final exam for Social Civics for American Schools?

    asked by Kate
  84. physics

    A metal container, which has a mass of 9.4 kg contains 14.2 kg of water. A 1.7-kg piece of the same metal, initially at a temperature of 160.0°C, is dropped into the water. The container and the water initially have a temperature of 15.0°C and the final

    asked by anonymous
  85. algebra

    if the red river is 500 miles longer than the blue river. if the sum of their lengths is 5550 miles what is the length of each river

    asked by DOn
  86. English

    Can you please check these instructions, Writeacher. Thank you very much. English remedial test 1) Complete the following sentences with must/mustn’t, have to, don’t have to, should/shouldn’t 2) Fill in the correct future form (will future, going to

    asked by Matthew
  87. chemistry

    The dH for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO (g) reacts completely. 2CO(g) + O2(g) --> 2CO2(g)

    asked by tank
  88. College Algebra

    The number of Mosquitoes M9x), in millions, in a certain area depends on the June rainfall x, in inches:M(x)=19x-x^2. What rainfall produces the maximum number of mosquitos?

    asked by Abreanna
  89. Discrete Math

    1.Using the principle of inclusion-exclusion find the numbers of integers between 1 and 1000 (inclusive)that are divisible by at least one of 2,3,5,or 7? 2.A drug store sells gum, candy, and playing cards. 15 teenagers are in the store...the clerk notes

    asked by Abbey
  90. Consumer Math

    Franklin deposited $1,400 in a savings account that accrues simple interest at 6.75%. What is the balance in his account at the beginning of the third quarter?

    asked by Anonymous
  91. Math 7 - Homework Question Check (Q2)

    37. On the lines below, explain why the graph you choose is misleading? Answer - The reason why graph A was misleading is because on the left side (where the numbers are) it started from 0 to 50, then 50 to 100, AND 100 to 300! From 100 to 300 is too much,

    asked by Laruen
  92. Math 7 - Homework Question Check

    12. Is the figure below a right triangle? On the lines below, explain how you determined your answer. Answer - The figure below is not a right triangle. The reason why it's not a right triangle is because this figure is a acute angle. Acute angle is less

    asked by Laruen
  93. economics

    Suppose that for the firm below, the goods market is perfectly competitive. The market price of the product the firm produces is $4 at each quantity supplied by the firm. What is the amount of labor that this profit-maximizing firm will hire, and what wage

    asked by Anonymous
  94. Physics (Energy and Momentum)

    A body of 5.10 kg mass makes an elastic collision with another body at rest and continues to move in the original direction, but with one-fourth of its original speed. What is the mass (in kilograms) of the struck body? Assuming a perfectly elastic

    asked by Andrew
  95. ALGEBRA

    Select all statements that are true. (log_b\(A\))/(log_b\(B\))=log_b\(A-B\) (If ) log_1.5\(8\)=x, text( then ) x**(1.5) =8. log\(500\) text( is the exponent on ) 10 text( that gives ) 500. text (In )log_b\(N\), text( the exponent is )N. text( If )

    asked by Randy
  96. Physics

    How much heat is required to raise by 10.30°C the temperature of 1.2 kg of water? How much heat is required to raise by 10.30°C the temperature of 1.2 kg of iron?

    asked by Alex
  97. discrete math

    Find the solution to the following lhcc recurrence: an=3nan-1 for n >or equal to with initial conditions a0=4

    asked by cjones
  98. English

    i hve to do metaphor assignment where i tell which type of writer i be. i not know what metaphor to use some example be spider: I am a writer: I am a spider, spinning a web of meaning with words and images pulled from my soul. I display my beautiful and

    asked by Mohammad
  99. math

    A building has 4 stories that are each 15 feet high. A scale drawing has the height of the building at 5 inches. Which of the following is the correct scale?

    asked by ben
  100. Native American Studies: Contemporary Perspective

    Define secularism and describe the role of secularism in Native and non-Native interactions. How does secularism influence Native and non-Native paradigms regarding natural resources? How has this difference influenced Native and non-Native interactions?

    asked by Anonymous
  101. physics

    An athlete swings a 4.30 kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.790 m at an angular speed of 0.590 rev/s. (a) What is the tangential speed of the ball? m/s (b) What is its centripetal acceleration? m/s2 (c) If the

    asked by Jamie
  102. history

    How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism

    asked by Brittney
  103. Consumer Math

    Edith earns an annual gross salary of $17,500. She has 28% of her gross salary withheld for taxes and other deductions. What is the net pay of each paycheck if she is paid weekly?

    asked by Naty
  104. Physics

    FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest

    asked by Justin
  105. Math

    A bag contains 5red balls and 4 white balls. Two balls are drawn at random from the bag. The first ball drawn is put back into the bag before the second ball is drawn. What is the probability that the two balls drawn are both red?

    asked by Sue
  106. dameno

    The driver of a 1300-kg car moving at 21 m/s brakes quickly to 13 m/s when he spots a local garage sale. (a) Find the change in the car's kinetic energy.

    asked by michelle
  107. Native American Studies

    Which of the practices listed is an example of an activity Native American people might regard as an act of desecration?

    asked by Liz
  108. physics

    The red laser light used in supermarket scanners has a wavelength of 633 x 10-9 m. (This is 633 nanometers, 633 nm). Find the frequency of the red laser light.

    asked by Tim
  109. geometry

    If m = 6.25 cm and n = 10 cm, what is the measure of angle ?

    asked by Annie
  110. math

    if you threw a 6-sided die 48 times, about how many times would you expect to land on a number greater than or equal to 4? how do i find the answer?explain.

    asked by Celest
  111. physics

    A plank 2.00 cm thick and 16.3 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. A man of mass 87.6 kg is forced to stand on the very end. If the end of the board

    asked by Anonymous
  112. maths

    During a trip, Sally spent 1/4 of her money on some clothes. She also spent 1/3 of the remaining money on a bag. She then bought a camera which cost $15 more than the bag and had $95 left. How much money did Sally have at first?

    asked by ssssss
  113. College Math

    An artifact was found and tested for its carbon-14 content. If 88% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.

    asked by Yvonne
  114. Physics

    A car of mass 1.25 103 kg is initially moving on a level road at a speed of 17.0 m/s. Compute the increase in temperature of the brakes, assuming that all the mechanical energy ends up as internal energy in the brake system. Assume a total heat capacity of

    asked by Alex
  115. PHYSICS

    FIND THE LENGTH (IN CM) OF A PENDULUM WITH A PERIOD OF 1.20S.

    asked by ~ALICE~
  116. Physics help!!

    A Styrofoam bucket of negligible mass contains 1.60 kg of water and 0.425 kg of ice. More ice, from a refrigerator at -14.8 degree C, is added to the mixture in the bucket, and when thermal equilibrium has been reached, the total mass of ice in the bucket

    asked by Joey
  117. Chemistry

    How much volume (in mL) of 0.75 M K2SO4 (aq) and water must be mixed to prepare to 150.0 mL of 0.10 M K2SO4 solution? Thanks!

    asked by Mike
  118. Consumer Math

    Sylvia receives a net pay of $390.45 biweekly. She has $130 withheld from her paycheck. What is her annual gross salary?

    asked by Naty
  119. Math

    Find the coefficient of x^2y^3 in the binomial expansion of (x-2y)^5.

    asked by Mariette
  120. Physics

    FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest

    asked by Justin
  121. statistics

    the universal baking ic purhases bags of flour which vary somewhat in weight. the bakery wants to determine if the mean weights per bag purchased from two suppliers are different, a) perform a hypothesis test at a 10 percent level if the supllier 1 sample

    asked by hypotheis
  122. Math

    Juan has two number cubes, each with faces 1,2,3,4,5,6. What is the probability he can roll the cubes so that the sum of the faces showing equals 11?

    asked by Anonymous
  123. Physics

    a 65 kg sled starting from the rest slides down a 14 m high frictionless ramp. at the bottom of the ramp the sled encounters a level area that is not frictionless. how much work is done by friction to stop the sled?

    asked by Kim
  124. CHEMISTRY

    WHAT IS THE COST PER KJ TO PRODUCE METHANOL, ETHANOL, PARIFFIN, PROPANOL,AND BUTANOL?

    asked by JGU
  125. Composition 155

    explain how purpose, audience, tone, and content impact academic writing. Be sure to use the three components of a good paragraph covered in this week’s readings. In addition, be sure to answer the following questions: What is the purpose of this topic?

    asked by Terrence
  126. Chemistry

    Calculate the volume of 1.78M sulfuric acid that would be needed to neutralize 62.4 mL of a 2.09 M aqueous ammonia solution. The equation for the reaction is H2SO4(aq) + 2 NH3(aq) ---> 2 NH4(aq)+ SO4 ^-2 (aq)

    asked by Brea
  127. College Math

    The "learning curve" describes the rate at which a person learns certain tasks. If a person sets a goal of typing N words per minute (wpm), the length of time t (in days) to achieve this goal is given by the following formula. t=62.5ln(1-N/80) (a)

    asked by Yvonne
  128. physics

    projectile motion with constant horizontal speed ? A stone falls off a cliff with horizontal velocity v m/s. it falls a distance of 5cm vertically and 200m horizontally in t seconds. when it has fallen a vertical distance of 20cm, what is its horizontal

    asked by raj
  129. Algebra

    If the sides of a square are increased by 3 cm, its area becomes 100 cm2. Find the length of the sides of the original square.

    asked by Anonymous
  130. science

    How many moles are in a 12.0 g sample of iron (II) oxide

    asked by Yamilet
  131. history

    what event caused the greek city- states to put aside their differences.

    asked by Bob
  132. physics

    Two waves traveling on a string in the same direction both have a frequency of 100 Hz, a wavelength of 2cm and an amplitude of .02 m. What is the amplitude of the resultant wave if the original waves differ in phase (a) by Pi/6 and (b) by Pi/3

    asked by Bob
  133. chemistry 2

    An experiment calls for 125 mL of 0.105 M NaCl solution. What mass of NaCl is required? What mass of NaCl would be required for 1.00 L of the same solution?

    asked by Britany
  134. poetry

    I am trying to identify examples of metaphors and assonance in the poem June by William Cullen Bryant? Can you help?

    asked by tonette
  135. chemistry

    Given a saturated solution of 25 drops of Ca(OH)2 in water that requires 34 drops of 0.0050 M HCl to titrate to the endpoint, calculate [OH-] and [Ca2+]. An ICE table will help you relate [OH-] to [Ca2+].

    asked by Cassie
  136. ALGEBRA

    Consider the following expression. 3(x - 2) - 9(x**2 + 7 x + 4) - 5(x + 8) (a) Simplify the expression.

    asked by Randy
  137. historical globalization $ imperialism grade 10

    what does eurocentric attitude means?

    asked by kyle
  138. Chemistry

    What is the equationfor this?: Sulfur reacts with oxygen to produce sufur trioxide

    asked by Taylor
  139. social 10

    What major way did the new imperialism of the late 1800s to early 1900s differ from the imperialism of the previous few ceenturies? PLEASE HELP ME!

    asked by kyle
  140. Pre-Calc Help!!!

    Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. Sqrt(1-cos50/2)

    asked by Amanda
  141. US History

    The major difference in ethnicity, religion, and settlement patterns of California: A. was founded by Spain, was Catholic, and settled very early in the 18th century B. they were completely successful in Christianizing the indians C. the area was dominated

    asked by Amy
  142. math

    you are making a scale drawing with a scale of 2 in =17ft. explain how you find the lenght of the drawing of an object that has an actual lenght of 51ft. what points should you include in your explanation?

    asked by Taylor
  143. chemistry

    A solution containing 5.00g of solid Al2(CO3)3 dissolved in water to a total volume of 200. mL is combined with 140. mL of 1.0 M HBr. Write the total of ionic equation for the reaction described below and find the molar concentration of all ions remaining

    asked by SELDIL
  144. Physics

    FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest I have used the equation, but im doing something wrong, so if i could get the answer instead of just

    asked by Justin
  145. Literature

    When you finish Antigone , you’ll write an essay analyzing the causes and/or effects of an issue, situation, or event in your journal. Your textbook explains the assignment this way: “…you’ll help readers understand an event or situation by

    asked by Petisa
  146. french

    I don't know if any of you have read le compte de mont cristo but there are two questions I am confused about. On what project did the abbot work? and after having encountered Dantes in prison, what did the abbot learn and what was his plan?

    asked by Nicole
  147. raiots and perimeter

    you have to figures that are similar, large one is 28yds, and the smaller one is 8yds. give the ratio of the perimeter and the ratio of the areas of the larger figure to the small one. Can someone please help not just answer but explain

    asked by kevin
  148. statistics

    Suppose that a random variable Y has a probability density function given by f(y) = ( ky 3 e y=2 ; y > 0 0; elsewhere: Find the value of k that makes f(y) a density function.

    asked by Anonymous
  149. language arts

    My mom went to the grocery store.she forgot her purse

    asked by justin
  150. chemistry

    Which metal,Pd or Pt has the lowest specific heat?Explain why, using the law of Dulong and Petit.

    asked by chin
  151. Geometry

    If AB= 9 centimeters and BC= 12 what does Ac equal ? and it is a right triangle .

    asked by Bri
  152. Math Probability

    If the probability that event A will happen is 1/4 and the probability of A not happening is 3/4, find the probability that event A happens 3 times out of 7 experiments

    asked by Antonio
  153. accounting

    Question: Because Aqua Elite, Inc. is a new startup business, the beginning balances in all the general ledger accounts are zero to start. n The length of the accounting periods are three months using a fiscal calendar year. (A fiscal calendar is on a

    asked by diana
  154. Math

    If a number cube is rolled, what is the probability of rolling a 3, given that the number rolled was odd?

    asked by Chiyo
  155. Math

    A bag contains 5 red balls and 4 white balls. Two balls are drawn at random from the bag. The first ball drawn is put back into the bag before the second ball is drawn. What is the probability that two balls drawn are both red?

    asked by Sandeep
  156. physics

    waves propagate down a 25 gram string at 35 m/s. If the string has a length of 1.5 meters, what is the magnitude of the tension acting on it?

    asked by sue
  157. maths

    Xuan Yun has a total of 24 coins in her piggy bank. Some of them are twenty-cent coins and the others are fifty-cent coins. Thetotal savings is $6.90. How many twenty-cent and fifty-cent coins does she have?

    asked by ssssss
  158. algebra

    Cupcakes cost $1.50 each to produce with fixed cost of $50. Express the cost C, of producing the cupcakes as a linear function of x cupcakes produced.

    asked by Anonymous
  159. Chemistry

    Are hybridized orbitals used to explain the fact that the four bonds in methane are equivalent? If not, what is?

    asked by Grace
  160. algebra

    Cupcakes cost $1.50 each to produce with fixed cost of $50. a) Express the cost C, of producing the cupcakes as a linear function of x cupcakes produced. b)Find the average cost, C=C/x and simplify appropriately. c) What is the horizontal asymptote of C?

    asked by Bryan
  161. Phsyics

    A cannonball is fired into the air with a speed of 42 m/s from a height of 28 m, with what speed does the cannonball hit the ground?

    asked by Kelly
  162. microeconomic

    Mexico produce only two goods, fish and coconuts. They only consume goods produced within their own country and do not trade with anyone. However Mexico needs more fish now.if they produce more fish they have to give up more coconuts. In the neighbor

    asked by rimm
  163. ALGEBRA

    Contract the expressions. That is, use the properties of logarithms to write each expression as a single logarithm with a coefficient of 1. text ((a) ) ln\(3\)-2ln\(4\)+ln\(8\) ((b) ln\(3\)-2ln\(4+8\) (c) )ln\(3\)-2(ln\(4\)+ln\(8\))

    asked by Randy
  164. economics

    Mexico produce only two goods, fish and coconuts. They only consume goods produced within their own country and do not trade with anyone. However Mexico needs more fish now.if they produce more fish they have to give up more coconuts. In the neighbor

    asked by rimm
  165. ALGEBRA

    Find a simplified value for x by inspection. Do not use a calculator. (a) log5(25) = x (b) log2(16) = x

    asked by Randy
  166. Calculus

    Use theta equals inverse tangent of 28/x minus inverse tangent of 6/x to show that theta also equals 22x/(x^2=168).

    asked by Lisa
  167. ALGEBRA

    (a) Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of ln(x) in your answer.) log_(8.5) \(127\) = Give a calculator approximation (correct to four decimal places). log_(8.5) \(127\) ~=

    asked by Randy
  168. to ms.sue

    this is what i flunked. SCIENCE for magnets and electricity!

    asked by Celest
  169. math

    last thing i promise ok the length of the wing of a model airplane is 3 in. if th escale of the model to the actual plane is 1in=25ft wha tis the length of the actual wing? is it 8.3 or 0.12

    asked by Taylor
  170. math

    Colin is working to earn some money for a CD player.On Saturday he earned half as much as he did on Sunday,but twice as much as he did on Friday.During those three days he earned $70.How much did he earn each day?

    asked by hates math
  171. Geometry

    A performance was rated on a 3-point scale by an audience. A rating of 1 was given by 30%, a rating of 2 was given by 60%, and a rating of 1 was given by 10%. To the nearest tenth, what was the average of the ratings?

    asked by Callie
  172. Geology

    Granite age for Scottish highlands

    asked by Jess
  173. Chemistry

    what volume of ammonia gas will be produced when 1.26L of nitrogen react completely in the following equation? N2 + 3H2 > 2NH3 Please if someone can just give me the order of operation it will be much appreciated because chemistry is just not my forte.

    asked by Randy
  174. Math

    I need help trying to write out these binomial expansions: they all need to be raised to the 8th power. Thanks 1. (x + y) 2. (w + z) 3. (x - y) 4. (2a + 3b) - Now explain how your answer for #1 could be used as a formula to help you answer each of the

    asked by Samantha
  175. Chemistry

    The pH of a 0.100 M solution of an aqueous weak acid (HA) is 4.00. What would the Ka for the weak acid be?

    asked by Grace
  176. anatomy and physiology

    what lifestyle factors of the muscle affect the growth, development, size and/or healing (positively or negatively) of the tissue?

    asked by James
  177. physics

    FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest___m smallest___m

    asked by Jack
  178. social grade 10

    Historical Globalization & imperialism PLEASE HELP! Did imperialism lead to a better life for European immigrants to Canada?

    asked by kyle
  179. physics

    FM radio signals are electromagnetic waves transmitted between frequencies of 88 MHz and 107 MHz. Find the range of wavelengths for these signals. largest___m smallest___m

    asked by Drew
  180. algebra

    solve for x: -5 is less than or equal to 2(2x+5)-7

    asked by Lover Girl
  181. algebra

    The third, the fourth and the fifth terms of a G.P. are (w+6), w,and (w-3) respectively. a. Find the value of w. b. Find the common ratio

    asked by jodi
  182. algebra

    If (x-3) is a factor of 3x^3+bx^2-17x-12. a. Find the value of b. b.Hence , find the roots fo the equation 3x^3+bx^2-17x-12=0.

    asked by jodi
  183. physics

    The relationship between magnetic force and magnetic pole strength is similar to the relationship between which of the following?. A) force, mass, and distance as in Newton's law of gravity.B) All of these.C) current, voltage, and resistance as in Ohm's

    asked by Christy
  184. Math Probability

    a bag of hershey miniatures candies contain 18 milk chocolates, 9 Mr.good bars, 9 krackel bars and 8 hershey dark chocolate. if a candy is chosen at random, find the probability that it is A) A krackel or a Dark chocolate B)Not a milk Chocolate bar?

    asked by Antonio
  185. Math Probability

    At a political rally there are 20 republicians 13 democrates 6 independents. if a person is chosen at random what is the probability that the person is either a democrate or and independent?

    asked by Antonio
  186. Math Probability dice roll

    two fair dice are rolled, find the A)odds of getting a 9 B) the odds against getting a 12

    asked by janet
  187. math(functions)

    Find the inverse of f for which f is defined as f:x-(2x minus 1)divided by (2x plus 1)

    asked by Nyasha
  188. physics

    the temperature of a body falls from 30C to 20C in 5 minutes. The air temperature is 13C. Find the temperature after a further 5 minutes.

    asked by frank fred
  189. physics

    Jahna and Raul move onto the setup for experiment 2. They have been asked to determine both the mass of the rod and the mass of the hanging object. They know the length of the rod, the position of the hanging mass, anf the positions and readings of the

    asked by Natasha
  190. physics

    distinguish between Root mean square velocity, Most probable velocity, and Average velocity of gas molecules.

    asked by frank fred
  191. Chemistry

    What mass of oxygen is consumed when 1.73L of carbon dioxide (STP) are produced in the following equation. C4H8 + 6 O2 > 4 CO2 + 4 H2O please help and show your work. My answer for this problem is 11.12g/O2. I have no confidence in my answer.

    asked by Randy
  192. ALGEBRA

    Evaluate the given expressions (to two decimal places). (a) log((23.0) ((b) log_(2) \(128\) text((c) ) log_(9) \(1\)

    asked by Randy
  193. MTH214

    Determine the height of a tower if it casts a shadow 156 ft long on level ground when the angle of elevation of the sun is 20°. (Round your answer to the nearest hundredth)

    asked by Amy
  194. 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

    asked by Randy
  195. algebra

    The week before the big concert, five friends Alan, Ben, Cameron, Derryck, and Garrett, stood in line to buy tickets. There were other people there, but the five friends were in the line in the order listed above. The line was really long, and they were

    asked by zachary
  196. bio anatomy

    whaat are some genetic variations of the occipital lobe?

    asked by Nicole
  197. Geometry

    How many different integer values of n satisfy the inequality 1/13 < 2/n < 1/10? F. 1 G. 2 H. 3 J. 4 K. 5

    asked by Derek
  198. ALGEBRA

    Solve the equations. ((a) ) (2 L)/(5) = 2 L = ((b) ) 4 = (4 M)/4 + 8 M =

    asked by Randy
  199. social 10

    (forms of imperialism) What are 3 ways that the new imperialism led to World War 1? PLEASE HELP!

    asked by kyle
  200. algebra

    Perform the division, x squared + 16x +63 divided by x + 7

    asked by theresa
  201. math

    Suppose the weekly use of gasoline for motor travel by adults in North America is approximately normally distributed, with a mean of 14 gallons and a standard deviation of 6 gallons. What proportion of adults use more than 18 gallons per week?

    asked by Eliza
  202. Math

    A simple dartboard has three areas the main board has a radius of 9 inches there is a circle with a radius of 5 inches ans the bullseye has a radius of 3 inches What is the proability of a random dart landing inside the bullseye Round to the nearest 1000th

    asked by Jeff
  203. Calculus

    Evaluate the definite integral from -π/2 to π/2 of (x^4) (sin x)/(1 + x^0)dx.

    asked by Michael
  204. algebra

    Find the coefficient of the fifth term in the expansion(rootK+3)^8

    asked by jodi
  205. English

    Hi. I will appreciate some help. Do you think it's possible to say "to attend to the guests" (i.e. take care of the guests)? Thank you very much for help.

    asked by Ilma
  206. Pre-Calc Help!!!

    Find sin x/2, cos x/2, and tan x/2 from the given information. cos x=− 4/5, 180° < x < 270° sin(x/2= cos(x/2)= tan(x/2)=

    asked by Amanda
  207. Pre-Calc !!!

    Prove the identity. 2tanx/1+tan^2x=sin^2x

    asked by Josh
  208. Calculus

    use law of cosines to show that theta equals inverse cosine of (a^2 + b^2 -484)/(2ab) where a^2=(7+xcos a)^2 + (28-xsin a)^2 and b^2=(7+xcos a)^2 + (xsin a -6)^2

    asked by Lisa
  209. maths

    Auston,Ben and carl spent all their mone on a dinner which cost $60. Auston paid thrice amount of money paid by Ben and Carl. Ben paid $1.60 more than Carl. If they were to share the cost of the dinner equally, how much must Ben and Carl each return to

    asked by ssssss
  210. maths

    A rectangular piece of wood measures 3.48m by 2.28m. Ali wishes to cut squares of the largest possible size from it without any leftover. What is the length of each square piece?

    asked by ssssss
  211. statistics

    the manufacturing of jstcare automobile uses a random sample of 500 car owners to determeine if the proportion of satisfied caar owners is different for jetcare than for other cars a)perform a hypothesis test t the 5 percent level if the sample contained

    asked by hypotheis
  212. Geometry

    How do I find the perimeter of the rectangle (l=10.6in and h=6.1 in

    asked by Jane
  213. history

    what is the outcome of the battle of Marthenon?

    asked by Schemmer
  214. ALGEBRA

    Find the number of decibels for the power of the sound. Round to the nearest decibel. A rock concert, 5.21 multiplied by 10-6 watts/cm2

    asked by Randy
  215. ALGEBRA

    A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.4 multiplied by 102 µm. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth.)

    asked by Randy
  216. ALGEBRA

    (1)/(2) log\(x\) - log\(10000\) = 4

    asked by Randy
  217. algebra

    HOW IS 1/(-2)³ THE SAME AS - 1/8? I understant that -2 x -2 x -2 = -8 but why does the entire fraction become negative? I would think the answer would be 1/-8? Not -1/8? Are they the same thing? This is GMAT study question.

    asked by PJR
  218. ALGEBRA

    Solve the equations by finding the exact solution. ln\(x\) - ln\(9\) = 3

    asked by Randy
  219. algebra

    Marissa has budgeted $65 for her monthly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes can she talk on her cell phone in a month and not exceed her budget?

    asked by carol
  220. algebra

    HOW IS 1/(-2)³ THE SAME AS - 1/8? I understant that -2 x -2 x -2 = -8 but why does the entire fraction become negative? I would think the answer would be 1/-8? Not -1/8? Are they the same thing? This is GMAT study question.

    asked by PJR
  221. ALGEBRA

    Use the definition of logarithm to simplify each expression. (a) )log_(3b) \(3b\) ((b) )log_(8b) \((8b)^6\) (c) )log_(10b) \((10b)^(-13)\)

    asked by Randy
  222. ALGEBRA

    Evaluate the given expressions (to two decimal places). (a) ) log((23.0) (b) ) log_(2) \(128\) (c) ) log_(9) \(1\)

    asked by Randy
  223. algebra

    Copy Cats charges a $21 surcharge for a batch of colored copies plus $0.15 per page. Heritage Printing charges a $25.50 surcharge for a batch of colored copies plus $0.12 per page. How many pages of colored copies would make Heritage Printing cheaper than

    asked by carol
  224. physics

    One mile of copper wire has a resistance of 13 Ω. Using the wire to electrically connect two terminals that are half a mile apart, rank the following situations in order of increasing resistance. I. Use the full length of wire. II. Cut the wire in half

    asked by BOBBY
  225. math

    In Mr. Roberts class there are 30 children. 18 of them are girls. What percent of the children in Mr Roberts class is girls?

    asked by Anonymous
  226. Social Studies 4th grade

    What challenges occured to Native American culture when they had contact eith European Settlers? 1. Spread of Disease 2 Increased Barter 3 Decreased Population 4 Inreased Conflict / War 5 ????????

    asked by RB
  227. English

    Can you check if the various exercises are all possible? Thank you, Writeacher. Here is exercise 1. •1) The new German teacher (arrive) _______on Tuesday, for his first lesson. 2) On Saturday night we (meet) _______our friends in the square at 3

    asked by Matthew
  228. English

    I need help writing a thesis statement on the power of research.

    asked by Tina
  229. math

    If 10 points are arranged on a circle, how many lines are needed to join every point to every other point once? First solve simpler problems to determine a pattern.

    asked by Anonymous
  230. anatomy and physiololgy

    what lifestyle factors of the bone affect the growth, development, size and/or healing (positively or negatively) of the tissue.

    asked by James
  231. College Physics

    A 30.0 m steel wire and a 22.0 m copper wire, both with 1.00 mm diameters, are connected end to end and stretched to a tension of 170 N. How long does it take a transverse wave to travel the entire length of the two wires? (Take the mass per unit length of

    asked by Anand
  232. life orientation

    five ways in which the human or environmental problem impacts on the community

    asked by mandisa moloi
  233. Operations Management

    What are some examples of companies that rely heavily on IT for effective supply chain management?

    asked by Anonymous
  234. Chemistry

    One more question: Which of the following effectively increases the reactant concentration? Is it: heating the reactant mixture or increasing pressure Thanks!

    asked by Lucy
  235. ALGEBRA

    3x2 = 17x + 6

    asked by Randy
  236. Algebra II

    You have a 12 gallon bucket filled with water, and empty 7 and 5 gallon buckets. Without using any other measuring devices, and without estimating a half-way point on the buckets, how can you equally divide 6 gallons of water into 2 of the buckets. PLEASE

    asked by MR
  237. social 10

    Historical globalization & imperialism If my ancestors were not indigenous Canadians what 3 motives for imperialism would make them immigrate to Canada? please help

    asked by kyle
  238. physics

    an electron has a kinetic energy that is 1.8 times its rest energy. What is its speed, expressed as a fraction of the speed of light?

    asked by Monique
  239. Under the Sea

    I was really impressed by the diversity of dresses that our creative team came up with! A round of applause for the FHFH designers, please!

    asked by Angelbaby
  240. algebra

    convert 4mm x 10cm x 2mm in to feet and inches

    asked by Anonymous
  241. physics

    An electric motor best makes use of the fact that on a current-carrying wire in a magnetic field there exists which of these?. A) electromagnetic energy to be tapped.B) rotation.C) All of these.D) a force.E) a changing voltage. Is this roation or all of

    asked by Christy
  242. Math

    If i had a 65% in a course now, and i need a 70% to pass, What will i need to get on my final exam worth 25% to pass the course?

    asked by Sarah
  243. Tax (HELP Plz)

    Jim Johnson has 40% interest in Richards and Johnson, LLP. The partnership has the following activity for the year: Sales $180,000 Cost of Goods Sold 105,000 Guaranteed Payment to Ron Richards 25,000 Depreciation 11,000 Interest Expense 1,000 Tax-Exempt

    asked by Kiran
  244. lifeorentation

    Identify and discribe one environmental problem that causes ill ,accidents,crises and disaster

    asked by gail
  245. English

    The Modern Drama collection theme is Opening Doors. Discuss examples of the ways in which doors and keys are used as symbols in The Miracle Worker. Make at least two references to specific details in the play to support your ideas.

    asked by Emma
  246. math

    how many feet are there in 4,000 miles?

    asked by Taylor
  247. History (To Mrs. Sue)

    The major difference in ethnicity, religion, and settlement patterns of California: A. was founded by Spain, was Catholic, and settled very early in the 18th century B. they were completely successful in Christianizing the indians C. the area was dominated

    asked by Amy
  248. ALGEBRA

    ln\(e\) = ln\( sqrt(2)/x \) -ln\(e\)

    asked by Randy
  249. ALGEBRA

    Solve the equations by finding the exact solution. (a) 1 = x - 1 (B)

    asked by Randy
  250. to ms.sue

    thank you so much! so it would be like a class right? when do i get started? thank you sooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

    asked by Celest
  251. math

    1. Gina wants to begin by figuring out how long the corn bed will be. She knows that in her previous two gardens, she was able to plant 2 rows in a 5 foot long space and 5 rows in an 11 foot long space. Find a linear equation for the length of the bed (y)

    asked by Melissa
  252. physics

    define black body, emissivity, solar constant in relation to heat transfer.

    asked by frank fred
  253. math

    Marissa has budgeted $65 for her monthly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes can she talk on her cell phone in a month and not exceed her budget?

    asked by carol
  254. life orientation

    in 10-15 lines critically discuss 5 ways in which the human or environmental problem impacts on the community.provide relevant sources to support your claims?

    asked by daniel
  255. English

    Can you please check the sentences? Thank you, Writeacher. 1) Are there any questions before you start? Did you have any difficulty in doing your homework? 2) Take a photocopy and pass the others on. Share these copies, one between two. Please, keep an eye

    asked by Matthew
  256. history

    According to the doves(people opposed to the Vietnam war) answer this question. Was the motive for US involvement in Vietnam primarily to help the average South Vietnamese citizen or was it primarily to gain a power advantage over Russia and China? That

    asked by Sara
  257. math

    At a political rally there are 20 republicians, 13 democrates, 6 independents. If a person is chosen at random what is the probability that a) the person is either a democrate or and independent?

    asked by delilah
  258. Math

    Hello, I need help with a 5th grade math question. The red train returns to central station every 45 min. The blue train returns to central station every 60 min. If both trains leave the station together, in how many min. will they both be back at the

    asked by Ardine
  259. English

    I left out two exercises for you to check. Thank you very much, Writeacher. By the way, do you say "talk about a topic of your choosing/or of your choice? 1) I ……………………… buy any butter, mum has just bought some. (Shall I include a colon

    asked by Matthew
  260. Chemistry

    Are the concentrations of CO, H2O, CO2 and H2 necessarily equal

    asked by Heather
  261. economics

    Explain why the productivity standard for the distribution of income entails rewarding people based on their contribution to society s total output. Why does the productivity standard typically fail to yield an equal distribution of income?

    asked by Anonymous
  262. Algebra

    For what values of x is x/[x(3x-4)] undefined?

    asked by Angel
  263. chem

    Hey you guys how do you find the moles of .75g of He

    asked by erica
  264. Algebra

    What is the vertex of y=(x-2)^2 +5?

    asked by Babygirl
  265. Algebra

    (100x^3y^-2)/(64x^7y^4)

    asked by Clare
  266. Consumer Math

    Joey-O's Organic Farm Financial Plan Revenues Budgeted Amounts From Farming $70,000 From Sales 8,200 Total $78,200 EXPENSES : Fertilizer $3,000 Pesticides 400 Feed 1,500 Equipment 1,700 Salaries 21,200 Supplies 300 Utilities 2,800 Insurance and interest

    asked by Anonymous
  267. College Math

    Consider the following expression. 3(x-2)-9(x^+7x+4)-5(x+8)

    asked by Yvonne
  268. Chemistry

    If a chlorine atom is lost from 1,2-dichloroethene [C2H2Cl2], would it have a higher or lower dipole?

    asked by Katherine
  269. social 10 COULD SOMEONE PLEASE HELP ME!

    Historical Globalization & IMPERIALISM I HAVE POSTED ABOUT 8 QUESTIONS THAT I REALLY NEED THE ANSWERS TO, I HAVE SAT HEAR ALL WEEKEND AND JUST DON'T GET THEM I HAVE JUST GOT MYSELF SO CONFUSED SO COULD YOU PLEASE HELP ME, I'M SO TIRED AND FED UP! THANK YOU

    asked by kyle
  270. algebra

    a ball falls from a height of 2.4m and bounces from the same spot, each bounces rise to 3/5 the height of the preceeding bounce. a. write the series of the movement from start to the eighth bounce. b.Find th etotal distance moved by the ball as indicated

    asked by jodi
  271. algebra

    Complete the tables for y=2^x and y=log base 2 x+3 y=2^x x -2, -1, ?, ? 2. y 0.25, ? 1 2 ? y=log base2 x +3 x ?, ?, ?, 1, ? y 0, 1, 2, 3, 4.

    asked by jodi
  272. physics

    last one before I got to go to work Which of these cities has the smallest incidence of cosmic rays? A) All about the same.B) New York City.C) Mexico City.D) Singapore.E) Anchorage.

    asked by Christy
  273. bio anatomy

    I am doing a paper on the occipital lobe and I am supose to talk about the pathology of it. i know that is like the study of disease of the lobe. So should i talk about different diseases that occur in the lobe? like maybe choose three different ones or

    asked by Nicole
  274. John F kennedy jr

    I am confused. Was John !@#$%^&ennedy Jr. murdered by a supposed bomb on the aircraft?? Or was it just a regular plane crash?

    asked by kathy
  275. math

    Kate is at a T-shirt sale where she can buy one and get a second one for 30% off. She wants to buy two T-shirts listed at $19 each. How much will she pay?

    asked by tt
  276. Math

    How many Terms does the binomil expansion on (X^2+2y^4)^25 have? a.23 b.24 c.25 d.26 e.27

    asked by Tiu
  277. Business math

    As a professional photographer, Marion has seen the trend away from film cameras as customers purchase low-end digital cameras and printers in order to avoid processing fees associated with film-based cameras. She would like to offer a new service to

    asked by Kimberly
  278. math

    the length of the Amazon River in South America is about 4,000 mi. How many feet is this?

    asked by Taylor
  279. physics

    Two students, Jahna, and Raul, re performing Experiment 1. To simplify their calculations, each will apply their force perpendicular to the arm of the apparatus. Jahna attaches her spring scale 15cm from the pivot and pulls with a force of 2.5N. Raul

    asked by Natasha
  280. ALGEBRA

    Solve the equations by finding the exact solution. ln\(x\) - ln\(9\) = 3

    asked by Randy
  281. to ms.sue

    i ave problems. over the summer, can you teach me because my parents don't have enough money to pay.

    asked by Celest
  282. math

    what is a scale? example please

    asked by Taylor
  283. Calculus

    Evaluate the integral from 0 to 24 of the square root of 9+3x dx.

    asked by Michael
  284. history social

    i need help to make a love poem

    asked by someone
  285. chemistry

    What are the total grams of iron

    asked by ashley
  286. History, World

    How many innocent South Vietnamese citizens were killed during the Vietnam war?

    asked by hannah
  287. elements and compounds

    iron and bromine

    asked by Tess
  288. com220

    how do I go about a full sentence outline for the effects of tanning salons

    asked by michelle
  289. business lowercapstone

    Assignment Type: Individual Project Deliverable Length: 4-5 body pages, 1 PERT chart, 1 Gantt chart Points Possible: 185 Due Date: 4/22/2012 11:59:59 PM CT Using your current work organization (or an organization of interest) as the subject matter,

    asked by dana
  290. pre cal

    does anyone take pre-cal online ?

    asked by Mecie
  291. English

    Here is the second exercise. Thank you very much for the revision. 1) John ……………………… buy the dictionary for the exam: he can take mine. 2) You ………………………stand on the left on the escalators. 3) I

    asked by Matthew
  292. Life orientation

    In 10-15 lines critically discuss 5 ways in which the human or environmental problem impacts on the community

    asked by Chikororo
  293. chem 101

    60F is 15.55 C 180 F is 82.22C delta T = 82.22-15.55 = 66.67 q = mass x specific heat x delta T q = 100g x 4.184 x 66.67 q = 278,947 = 279 kJ. Burning alcohol (46 g ethanol) provides 1238.43 kJ/mol. We want to know how many g ethanol to burn to provide 279

    asked by Anonymous
  294. Learn

    the length of the paper is 12 feet then what is the approximate area of the paper

    asked by Cora
  295. English

    I urgently need you to check this paragraph. Thank you, Writeacher. 1)Henry II was successful in bringing order and stability. 2) To avoid civil wars, he needed to reduce the power of the barons and wanted professional soldiers (mercenaries) to do this.

    asked by Matthew
  296. Math

    A ladder is placed 6 ft aainsgt a 25 ft building. How high above the ground does the ladder touch the wall?

    asked by Daniel
  297. sliva

    a solution is made by dissolving 3.95g of NaCl in 78.2 mL what is the concentration of sodium chloride in units of weight/volume percent

    asked by amber
  298. math

    Who am I? If you multiply me by 6 and subtract 11, the result is 73.

    asked by Anonymous
  299. math

    john made 1,620 last week. of that amount 1/5 went toward taxes ans 1/4 was spent on rent. what is the best estimate of how much money went tiward taxes and rent?

    asked by yolo
  300. math

    A=20 m2, b=_________, h=4m

    asked by rhonda
  301. Health Science

    Implementation of informatics has shown to be effective in many areas of health care. Perform a brief literature review and discuss one area that has shown significant savings in the operating budget.

    asked by Jay
  302. Algebra

    Solve for x: |x-6|>7

    asked by Marie
  303. Algebra

    Solve for x: (x/4)-(5/x)=(1/4)

    asked by Nikki
  304. Consumer Math

    What types of expenditures could you include in a budget for a working student? Do you need to save money, or can you spend all of your wages?

    asked by Anonymous
  305. College Math

    A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.3 102 µm. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth.)

    asked by Yvonne
  306. social 10

    Why is the "new imperialism" called the first era of globalization? PLEASE HELP!

    asked by kyle
  307. Algebra

    What is the domain and range of the equation y=-x^2-4x-7?

    asked by Jena
  308. social 10

    what would be a good statement to describe the differences between globalization & imperialism? PLEASE HELP!

    asked by kyle
  309. Physics

    a parallel plate capacitor, 10µF with air between its plate is connected to a 50 volt source and then disconnected. a)What is the charge on the capacitor and the potential difference across it.

    asked by Bukola
  310. math

    iwant help wth reduction formula

    asked by peacemaker
  311. Math

    A number is drawn at random from {1,2,3,4,5,6}. What is the probability that either a number larger than 3 or an even number will occur?

    asked by Mandeep
  312. sewing

    when plannin a one piece facing for the armhole of a sleeless dress, the grain line of the facing should be taken from the

    asked by Martina
  313. thermodynamics

    0.5 kg of saturated vapor is contained in a closed system with pressure of 10 bar is cooled at constant volume until pressure decreases to 5 bar. Determine heat transfer and sketch the process in a P-v and T-v diagram answer = -473.35 kJ(heat is

    asked by shasha
  314. english

    is the example "... waves rumbled across the reef..." a metaphor???

    asked by nicole a
  315. science

    what is buffer (ing) solution and its application with one example? and buffer system in blood?

    asked by erode kathirvel
  316. math

    when a cross tile is placed on a number plane the centre number is the average of al the numbers covered. Explain why

    asked by julia
  317. math

    4y-y+2/Y To 2nd power+3y

    asked by Anonymous
  318. maths

    solve the folling equation using grammars 2x+4y+z=9

    asked by abraham jerry
  319. SOCIAL STUDIES

    HOW OLD IS THE GREAT BARRIER REEF?

    asked by al
  320. math

    Use a net to find the length and width of a single sheet of paper that could be used to wrap the entire gift box. l = 6 in w = 4 in h = 2 in

    asked by scott
  321. Math

    Kirk has 25 marbles and 14 seashells. What information is needed to find the number of marbles that are NOT cat's eyes?

    asked by Jackie
  322. sector and diameter

    Find the area of a sectorwith a central angle 0f 190degree and a diameter of 5.1cm. Can someone please help?

    asked by kevin
  323. Math Need Help NOW!!!!!!!!!

    HELP! I forgot what a factor and multiple Mean.

    asked by Nix The Robot (is a Zelda fan)
  324. grade 6 math

    how many rectangles can have the perimiter of 46m

    asked by tony
  325. math

    there is no width

    asked by Cora
  326. social 10

    Historical Globalization & imperialism Should the Europeans have tried to change the beliefs of thr people in their colonies during imperialist times? could you please give me some reasons. Please help

    asked by kyle
  327. social 10

    historical globalization & imperialism PLEASE HELP! Did imperialism lead to a better life for Canada's indigenous people?

    asked by kyle
  328. social 10

    could you please help me with 6 differents of imperialism in Canada and imperialism in India?

    asked by kyle