Questions Asked on
October 6, 2012

  1. Chemistry

    Calculate the pH and the pOH of an aqueous solution that is 0.025 M in HCl(aq) and 0.075 M in HBr(aq) at 25°C.

    asked by Alex
  2. Chemistry 120

    * If 13.3 kilograms of Al2O3(s), 58.4 kilograms of NaOH(l), and 58.4 kilograms of HF(g) react completely, how many kilograms of cryolite will be produced? * Which reactants will be in excess? *What is the total mass of the excess reactants left over after

    asked by Rachel
  3. chemistryy

    Identify the solute with the highest van't Hoff factor: Non-electrolyte, NaCl, MgCl2, FeCl3, MgSO4

    asked by luz
  4. Physics

    To create artificial gravity, the space station shown in the drawing is rotating at a rate of 1.60 rpm. The radii of the cylindrically shaped chambers have the ratio rA/rB = 3.00. Each chamber A simulates an acceleration due to gravity of 9.60 m/s2. Find

    asked by Redgy22
  5. Chemistry

    How would the calculated molarity of KMNo4 be affected when KMno4 is added to rapidly and too much KMnO4 is added, overshooting the endpoint.

    asked by Karamu
  6. Physics

    A force F = (5i − 4j) N acts on a particle that undergoes a displacement Δr = (5i+j)m . (a) Find the work done by the force on the particle. (b) What is the angle between F and Δr?

    asked by Abraham
  7. algebra

    A total of $12,000 is invested in two funds paying 9% and 11% simple interest. If the yearly interest is $1,180, how much of the $12,000 is invested at each rate? We have two unknowns: the amount of money invested at 9% and the amount of money invested at

    asked by lin
  8. chem

    The complete combustion of octane, C8H18, the main component of gasoline, proceeds as follows. 2 C8H18(l) + 25 O2(g) ¨ 16 CO2(g) + 18 H2O(g) Octane has a density of 0.692 g/mL at 20‹C. How many grams of O2 are required to burn 26.5 gal of C8H18? i

    asked by rebekah
  9. Statistic

    I’m having problems creating the flow chart, so I am unable to insert the numbers. This is what I have done this far, and I’m not sure if I’m accurate with the calculations. (1) A school cafeteria is operated by five persons performing the activities

    asked by JJ
  10. Physics

    A circular hole in an aluminum plate is 2.725 cm in diameter at 0.000 degrees celsius. What is its diameter when the temperature of the plate is raised to 100.0 degrees celsius?

    asked by Michelle
  11. world history

    1. Which of the following were major items of trade in the West African states of Ghana and Gao? A. Bananas and copper B. Cacao beans and slaves [C. Gold and salt] D. Coffee and sugar

    asked by jake
  12. physics

    The mass of a roller-coaster car, including its passengers, is 481 kg. Its speed at the bottom of the track in the figure below is 20 m/s. The radius of this section of the track is r1 = 24 m. Find the force that a seat in the roller-coaster car exerts on

    asked by Anonymous
  13. College Physics

    Suppose the Eskimo is pushing the same 50.0-kg sled across level terrain with a force of 51.5 N. If he does 3.85 102 J of work on the sled while exerting the force horizontally, through what distance must he have pushed it?

    asked by Meghan
  14. CHEMISTRY

    CALCULATE DELTA G FOR REACTION Cu2(aq)+2Ag(s) gives Cu(s)+2Ag(aq) Given, E0 Ag+/Ag=0.80 v and E0 Cu2+/Cu=0.34 V

    asked by RAJI
  15. chemistry

    A 5.000 g sample of a mixture which contains MgCO3 and sand (SiO2) was heated for 2.30 hours until no further reaction occurred. It was then cooled and the residue, which contained MgO and unchanged sand, was weighed. The reaction is: MgCO3(s)  MgO(s) +

    asked by anonymousplm
  16. PHY 101

    A 0.425-kg blue bead slides on a frictionless, curved wire, starting from rest at point where h = 1.50 m. At point , the blue bead collides elastically with a 0.675-kg green bead at rest. Find the maximum height the green bead rises as it moves up the

    asked by tom
  17. science

    a star has a size of 0.1 solar radius. How many times larger is the sun than this star

    asked by asia
  18. Math

    The Lions Gate bridge in Vancouver is a suspension bridge. The main span between the two towers, is 427m long. Large cables are attached to the ends of the both towers, 50m above the road. Each large cable forms a parabola. The road is suspended from the

    asked by Hamza
  19. Chemistry

    Uhmmm.. I am totally lost! Help? There are 7.0 x 10^6 red blood cells in 1.0 mm^3 of blood. How many red blood cells are in 1 L of blood?

    asked by Kayla
  20. chemistry

    The first ionization energy of a hydrogen atom is 2.18 aJ. Assuming the ionization efficiency is 82%, how many such photons are needed to 1.00 * 10^16 atoms?

    asked by gine
  21. Chemistry

    How would the calculation percent of oxalate of the unknown affected when weighting out the unknown solid the actual mass is .758 grams however the mass is mistakenly recorded as .785 grams

    asked by Karamu
  22. Health

    Explain five personal characteristics or life situations that promote good fitness, health, and wellness. Include in your answer reasons that support these as being beneficial to lifetime fitness.

    asked by Hollaaa
  23. world history

    2. In forming his government, Asoka recruited what group to serve as bureaucrats? A. Traditional Brahman elites [B. The Buddhist clergy] C. The military elite D. The rising merchant class

    asked by jake
  24. Sociology

    Did I choose the correct answer #3 In the mid- to late 1880s, the United States experienced a surge in immigrants from 1)Japan and Cuba. 2)China, Japan, and Mexico. 3)China and Japan < I chose this one< 4)China and Canada.

    asked by Sharon
  25. world history

    7. In the development of the Roman Empire, the Romans treated citizenship as A. a benefit worthy only of peoples who had freely joined them. [B. belonging only to native Romans.] C. meaningless because the Roman Empire was tyrannical. D. something to be

    asked by jake
  26. Physics

    An 855-kg race car can drive around an unbanked turn at a maximum speed of 61 m/s without slipping. The turn has a radius of curvature of 165 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 10900 N on the car.

    asked by Moises
  27. chemistry

    A sample being given as a laboratory unknown is a mixture of calcium carbonate and magnesium carbonate. Both substances decompose to form calcium oxide and magnesium oxide, respectively, when heated at a high temperature for a prolonged period. An unknown

    asked by anonymousokm
  28. Physics

    A 4 kg block slides down a rough inclined plane inclined at 30° with the horizontal. Determine the coefficient of kinetic friction between the block and the surface if the block has an acceleration of 1.2 m/s2.

    asked by La La
  29. Language Art

    You can explore, with a minimal time commitment, an interest, hone a skill, or participate in an activity. If you rewrote sentence 3 beginning with With a minimal time commitment, the next words should be 1. to be exploring 2. you can explore 3. an

    asked by jacob
  30. Physics

    If a particle moves with velocity V PA = (2.0 m/s) + (4.0 m/s) relative to frame A, what is the velocity V AP of the frame relative to the particle? a. -(2.0 m/s) + (4.0 m/s) b. -(2.0 m/s) - (4.0 m/s) c. (2.0 m/s) + (4.0 m/s)

    asked by Sharon
  31. Algebra

    A builder has 80 feet of fencing to create an enclosure adjacent to a long existing wall. He will use the wall for one side and the available fencing for the remaining three sides. If the sides perpendicular to the wall have length x feet, which of the

    asked by Anonymous
  32. Math

    A store mixes Brazilian coffee worth $10 per kilogram and Turkish coffee worth $12 per kilogram. The mixture is to sell for $11 per kilogram. Find out how much of each should be used to make a 216 kilogram mixture.

    asked by Curt
  33. Statistics 2231

    12.05 A study of the students taking distance learning courses at a university finds that they are mostly older students not living in the university town. Choose a distance learning student at random. Let A be the event that the student is 25 years old or

    asked by Regina
  34. Math

    Please find the next THREE numbers in the patterns and explain how you got them: 1) 5, 5/2, 5/4, 5/8, 5/16.... 2) 1, -3, 9, -27, 81... 3) 1/2, 1/2, 3/8, 1/4, 5/32... 4) -9, 101, -999, 10001, -99999...

    asked by Kim
  35. Chemistry

    A sample of metal has a mass of 1.75 kg and a specific heat of 0.115 cal/g oC. What is the temperature change of the metal after 625 calories of heat are added? My answer is 3 oC. Just want to make sure is right and my equation is set up right.

    asked by Karamu
  36. Chemistry

    You have made a bet with a friend. You tell them that you can eat one mole of M&Ms in a year, if you eat one M&M every second for three hours a day, 7 days a week, for 365 days in that year. Can you win the bet? Calculate how many years it would really

    asked by asdfghjkl
  37. german

    Think of a funny cartoon that you like. Choose a character or two from that cartoon and write 3-5 sentences telling what those characters did in the cartoon you watched. Use the simple past verb tense to write your sentences. ****I was thinking about doing

    asked by BreAnne
  38. math

    Sanjeev is twice as old as his son.If after four years he will be four times as old as his son was 9 years ago ,how old is each now ??

    asked by TUHITUHI
  39. chemistry

    The imaginary compound calcium nortonate, CaNtO4, is 54.698% nortonium, Nt, by weight. Calculate the percent, by weight, of potassium in potassium nortonate to four significant digits.

    asked by 098123
  40. physics

    A tennis ball with a velocity of +9.6 m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a velocity of -5.8 m/s (to the left). If the ball is in contact with the wall for 0.013 s,

    asked by Mackenzie
  41. math

    the age of somya and yaseen are in the ratio 5:7.if somya were 9 years older and yaseen is 9 years younger one,find thier present age?

    asked by TUHITUHI
  42. pre-calculus

    solve the following logarithmic equation. Be sure to reject any value of x that is not in thedomain of the orginal logarithmic expression. Give the exact answer. log3(x+8)=4 The three actually drops down a little below the g. Can someone tell me how to do

    asked by ladybug
  43. grammar

    several lab studies are being performed because its or it's necessary for appropriate treatment. which its or it's should be used.

    asked by Anonymous
  44. world history

    11. Which of the following is not one of the new thoughts of or about God that were formulated in the Axial Age? A. Many Gods B. Divine God [C. Single God] D. Involved God

    asked by jake
  45. Physics

    2. A person would like to jump over a river using a motorcycle and a ramp. The frictionless ramp is inclined at an angle of 42.5 degrees, has a length of 52 meters, and the motorcycle's engine produces a constant force of 915 Newton’s directed up the

    asked by Jasmin
  46. Physics

    what is the force that a jet pilot feels against his seat as he completes a vertical loop that is 500 m in radius at a speed of 200 m/s? Assume his mass is 70 kg and that he is located at the bottom of the loop.

    asked by Linda
  47. Physics

    A 2.285 kg object is held in place on an inclined plane that makes an angle of 40 degrees with the horizontal. The coefficient of static friction between the plan and the object is 0.552. A second object that has a mass of 4.75 kg is connected to the first

    asked by Mike
  48. CHEMISTRY! HELP!

    I have a hard time getting this someone help me? Astronauts often use the unit light year to express intergalactic distances. If light travels 3.00 x .10^10 cm/s and one year is defined as 365 days, how many kilometers does light travel in one year?

    asked by Kyle
  49. science

    what are some physical properties of stars

    asked by candy
  50. Physics

    A satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 3.70 104 s. What is the speed at which the satellite travels?

    asked by Moises
  51. Physics

    The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 5.2 m, measured from its tip to the center of the circle. Find the ratio of the centripetal acceleration a1 at the end of the blade to the centripetal

    asked by Moises
  52. statistics

    1. The exam scores for the students in an introductory statistics class are as follows. 88 63 90 64 82 98 96 75 89 86 76 84 70 67 34 89 85 39 81 96 92 85 a. Compute the mean and the median score. b. Identify the shape of the distribution of score. Explain

    asked by Anonymous
  53. peripheral nerves

    How do the functions of the two groups of peripheral nerves differ?

    asked by randomchik
  54. chemistry

    How many photons are produced in a laser pulse of 0.324 J at 631 nm?

    asked by lindsay
  55. Physics (Kinematics)

    A ball is thrown 83.3 m upward and then falls back to earth.Neglecting air resistance, how long will it be in the air? The acceleration of gravity is 9.8 m/s2 . Answer in units of s

    asked by Joy
  56. Physics

    A boater wants to head straight across a river that has a current of 3km/hr. If the top speed of the boat in still water is 4km/hr, find the direction the boat must travel into the current to go straight across the river. How fast is the boat going

    asked by Megan
  57. physics

    A ball thrown vertically upward has an upward velocity of 5.68 m/s at a point 11.9 m above where it was thrown. How long does the ball take to reach that point?

    asked by Anonymous
  58. trignometry

    show that cos2x=1-tan^ 2 x /1+tan^2x=2cos^2x-1

    asked by help me out it's urgent
  59. mathematics

    there are two wooden square prisms with base edge 8cm and height 12cm.from one of this prism ajesh curved outthe largest square pyramid.but from the otherrajesh curved out the largest cone.find the volume of the solids they curved out.whose product has

    asked by asha
  60. physics!!

    An 8.82g bullet is fired into a 235g block that is initially at rest at the edge of a table of h = 1.05 m height (see the figure below). The bullet remains in the block, and after the impact the block lands d = 2.16 m from the bottom of the table.

    asked by Emily
  61. world history

    3. What geographic feature at times made life difficult for the Moche of South America? A. Mountains [B. Desert] C. Lack of access to the sea D. Unpredictable rivers

    asked by jake
  62. world history

    6. After its conquest by Alexander the Great, the government of the Persian Empire A. was transformed into a democratic monarchy. B. became a democracy. C. was ruled by a traditional Macedonian monarchy. [D. was maintained more or less intact.]

    asked by jake
  63. english

    2. According to the Pardoner, what is the best way to collect money from people? (1 point) appealing to their sense of piety openly condemning avarice and greed scaring them with prospects of divine punishment

    asked by elizabeth
  64. Precalculus

    I have a diagram that has 4 rectangular corrals joined together and a barn above it. Fencing is not needed along the back wall of the barn. The perimeter is 200 ft and the question asks... If each corral is 16 ft. long (front to back) how wide will each

    asked by Cole
  65. math

    An open box is made from a rectangular piece of cardboard, with dimensions of 24 cm by 30 cm, by cutting congruent squares from each corner and folding up the sides. Determine the dimensions of the squares to be cut to create a box with a volume of 1040 cm

    asked by Melissa
  66. physics

    While standing on 3rd street you hear an approaching ambulance. Its siren oscillates in frequency between about 650 Hz and 750 Hz. Later on as you near your destination, you come upon the scene of the accident. The now-stationary ambulance runs its siren

    asked by Anonymous
  67. chemistry

    To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 8.10 nm in diameter? Take the mass of an

    asked by lindsay
  68. Chemistry

    If the Kb of a weak base is 2.6 × 10-6, what is the pH of a 0.24 M solution of this base?

    asked by Alex
  69. English

    I'm a 7 Letter Words, You Read me daily, My 5, 6, 7th Letter increases every Year. 3rd and 4th Letter are the Same. My 3rd, 2nd and 5th Letter Covers 75% of the World. What am i?.

    asked by Tesa
  70. math

    Of 55 students in the fifth grade, 43 are fans of the local basketball team and 35 are fans of the local hockey team. Twenty - three students are fans of both teams. How many students are fans of the hockey team but not the basketball team?

    asked by Anonymous
  71. maths

    can you help me with this? cos2A=cossquareA-sinsquareA/cossquareA+sinsquareA=cossquareA(1-tansquareA)/cossquareA(1+tansquareA) I encountered this situation while solving trignometric problem.can you tell how does this come?

    asked by help me out it's urgent
  72. chem 2

    The boiling point of an aqueous 1.83 m salt solution is 102.5°C. Determine the value of the van't Hoff factor for this solute if the Kb for water is 0.512°C/m.

    asked by gigi
  73. math

    write 718.5 in scientific notation

    asked by Bill
  74. science

    Explain why the temperature of water might increase when a solution forms.

    asked by Morgan
  75. Math

    For an experiement to test elastic collision, ball 2 was at rest and ball 1 was released from a certain height and distance and hit ball 2. A set of measurements were collected which was v1 and v2 prime for each ball. I need to calculate the kinetic energy

    asked by Hannah
  76. mathematics

    what is the slantheight of the largest square pyramid that can be curved out from a wooden cube of side 12cm?find the lateral surface area of the pyramid so obtained?

    asked by asha
  77. chemistry

    if u had used 40ml of water and 6g of ammonium nitrate ,rather than 20ml water n 3g ammonium nitrate. would u expect to get a larger,smaller or identical temp. change? why?

    asked by hz
  78. Physics

    A satellite has a mass of 6135 kg and is in a circular orbit 3.80 105 m above the surface of a planet. The period of the orbit is 2.08 hours. The radius of the planet is 3.85 106 m. What would be the true weight of the satellite if it were at rest on the

    asked by Moises
  79. Physics

    On a banked race track, the smallest circular path on which cars can move has a radius of 119 m, while the largest has a radius 155 m, as the drawing illustrates. The height of the outer wall is 18 m. (a) Find the smallest speed at which cars can move on

    asked by Moises
  80. pre-calculus

    solve the following logarithmic equation. be sure to reject any value of x that is not in the domain of the original logarithmic expression. give the exact answer. then, use the calculator to obtain a decimal appromiation, correct to two decimal places,

    asked by ladybug
  81. Math

    Al and Harpreet are racing to Wing Stop to get the last batch of fries made for lunch. Al participates in cross country and can cover (write in value) per minute. Harpreet likes to watch TV and play video games. She is out of shape and can only cover 3

    asked by Dana
  82. pre-calculus

    solve the exponential equation. express the solution in terms of natural logarithims. Then, use a calculator to obtain a decimal point approximation for the solution. e^x=12.3 What is the solution in terms of natural logarithims? The solution set is ?

    asked by ladybug
  83. history

    Which of the following statements about President Andrew Johnson is true? A. He was raised under conditions of extreme poverty B. He was well educated, but he was a poor stump speaker. C. he was impeached and forced from office. D. He defended the planter

    asked by arthur
  84. physical science

    An object which is 0.52m tall is located 1.13m in front of a plane mirror. How tall is the image as seen in the mirror?

    asked by Anonymous
  85. world history

    12. The Chinese philosopher Xunzi wrote that if a person attempted to cure rheumatism by beating a drum and sacrificing a pig to the gods, then the A. rheumatism wouldn't get better because proper therapy required playing a flute and sacrificing a chicken.

    asked by jake
  86. chemistry

    I left out part of my question. This may make better sense. But I'm not sure of what he can be asking me to do with it. 75g of tartaric acid in one liter is used in a titration. What could he want me to find?

    asked by What?
  87. Geometry

    if RS= 2x+2 and ST= 3x-2 and RT= 24, find the value of x. then find RS and ST

    asked by haddash
  88. Biology

    1. Creates energy in the form of ATP 2. The gel-like liquid that fills the cell 3. Sorts, packages, and sends out proteins 4. Helps the chromosomes divide faster in animal cells only 5. Creates food energy from sunlight energy 6. Responsible for digestion

    asked by Aradia Megido
  89. Prealgebra

    Identify the slope and y-intercept of the line with the given equation then graph the equation. Y=-2 * must use slope-intercept form

    asked by Aaron
  90. chemistry

    To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 8.10 nm in diameter? Take the mass of an

    asked by Anonymous
  91. physics

    While standing on 3rd street you hear an approaching ambulance. Its siren oscillates in frequency between about 650 Hz and 750 Hz. Later on as you near your destination, you come upon the scene of the accident. The now-stationary ambulance runs its siren

    asked by Anonymous
  92. business

    Major Tire Company's plant in Charleston, South Carolina was destroyed when Hurricane Hazel hit the coast. The company officially closed the facility after reviewing the damage and terminated all 500 workers. The company did not give the employees 60 days

    asked by vonnie
  93. English

    1. Fifty states make up the U.S.A. 2. Fifty states compose the U.S.A. 3. Fifty states comprise the U.S.A. 4, The U.S.A. is composed of fifty states. 5. The U.S.A. consists of fifty states. 6. The U.S.A. is made up of fifty states. (Are they all grammatical

    asked by rfvv
  94. business

    select the statement which reflects the employer position on electronic monitoring

    asked by lamia
  95. Health care admin.

    How do HMOs affect health care costs?

    asked by toya
  96. Chemistry

    Calculate the amount (volume) of 0.135 M HClO4 solution required to neutralize 57.00 mL of .089 M NaOH

    asked by Vicky
  97. statistics

    How do you calculate the degrees of freedom for unequal sample sizes and unequal variance (independent t test)

    asked by maddy
  98. Math

    A 5.0m ladder is leaning 3.1m up the wall. What is the angle the ladder makes with the ground? Would this be..... sinA=3.1/5.0 sinA=0.62 sin^-1=38degrees?

    asked by Nikki
  99. calculus

    find the x coordinate of each point at which the line tangent to the graph of f(x)=x^4-3x^2 is parallel to the line y= -2x+4

    asked by Anonymous
  100. Physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 20.0 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 83.9 m), the block swings

    asked by Thien
  101. Precalculus

    Combined area of 1680ft^2 for 4 identical rectangular corrals. Corrals are joined together and no fencing at the back wall of the barn. 200=5d+4w 1680=4dw What length will produce the maximum area? d=12 The dimensions of each corral (lxw) is 12'x35' What

    asked by Cole
  102. Social science

    Social conflict, empowerment theory and feminist theory. How are the theories similar? How are the theories different? What are the implications for interventions and community development? Thank you, Ms. Sue

    asked by KeKe
  103. Calculus

    Use implicit differentiation to find dy/dx. e^4x = sin(x+2y). This is a practice problem. It says the correct answer is 4e^x/(2sin(x+2y)) but I keep getting 4e^(4x)/(2cos(x+2y)). I thought the derivative of e^(4x) would be 4e^(4x), not 4e^(x). And I use

    asked by Travis
  104. pre-calculus

    the function f(x)=4/x-7 is one to one a. find the inverse of f b. graph f, f^-1, and y=x on the same set of axes find the inverse of f f^-1(x)=

    asked by ladybug
  105. world history

    5. What religion, which had potentially universal appeal, was created by Gautama Siddhartha in India? [A. Buddhism] B. Hinduism C. Zoroastrianism D. Jainism

    asked by jake
  106. statistics

    How is the standard error of the mean influenced by sample size and standard deviation?

    asked by Nina
  107. world history

    8. What strategy did Buddhist and Christian missionaries employ to spread their faith that Muslims didn't? A. Conversion of kings and other elite figures B. Use of artifacts C. Forceful conversion of others [D. Conversion of merchants]

    asked by jake
  108. Calculus

    The linear approximation to 1/sqrt(3-x) at x=0 is y=

    asked by That Guy
  109. pre-calculus

    solve the equation 1. In x + In (x+12) =2 x= ? or either there is no solution 2. solve the exponential equation 9^x=6 What is the exact answer? 3. Use transformations to indentify the graph of the function. Then determine its domain, range, and horizontal

    asked by ladybug
  110. math

    a pipe is 2" outside diameter and it as 3/16" walls. What isthe inside diameter. could you explain in detail . Thanks

    asked by jay
  111. please help

    HI, MY dughter is studying 3rd grade.how to prepare Tsat test in math,english.can u tell me .can u send me links.Tennese state.that links is not working.can u send me another links

    asked by Lakshmi
  112. world history

    13. _______ was the first thinker to postulate that numbers are real, not abstractions. A. Hui Shih [B. Pythagoras] C. Parmenides D. Aristotle

    asked by jake
  113. physics

    a 4 kg mass is dropped on a spring below. the mass falls 2 meters before stopping and the spring compresses 40 cm in the process. what is the spring constant?

    asked by Emily
  114. math

    Of 30 runners surveyed ,23 go running in the morning and 15 go running in the evening . Seven of the runners surveyed go running in both the morning and the evening .How many runners go running in the morning but not the evening?

    asked by Anonymous
  115. chemistry

    certain electromagnetic wavelenght radiation has frequency of 98hz .what will be its wave lenght?

    asked by viraj dahane
  116. math

    use : .# x 6 = minutes I did try to do it but came up with numbers like 5.732360456. Plz help P.S. Trying to help my son but can't 0.5 ='s how many hours and minutes 2.5 ='s how many hours and minutes 2.3 ='s how many hours and minutes 12.5 ='s how many

    asked by Anonymous
  117. Algebra

    Of 30 runners surveyed, 22 go running in the morning and 15 go running in the evening. Seven of the runners surveyed go running in both the morning and the evening. How many runners go running in the morning but not the evening?

    asked by Anonymous
  118. Math

    Ms. Sue, help me. I don't get the runners problem. Please i am helpless!!!

    asked by Anonymous
  119. math

    how to solve a quadratic equation in one variable ? plsss

    asked by nina
  120. math

    please help me solve , 1/8(x+230)=200

    asked by ann
  121. Algebra

    How do I solve 6/2x - 1 - 2/2x+1

    asked by Sheryl
  122. physics

    A car traveling 28 mi/h accelerates uniformly for 6.7 s, covering 555 ft in this time. What was its acceleration? Answer in units of ft/s 2

    asked by Ann
  123. science

    What happens when you burn magnesium metal using the big idea of energy?

    asked by tom
  124. African American

    Amazing fact regarding African American in Randolph County

    asked by ami
  125. Chemistry

    What is the moles of NaOH when molarity is .2744 125 mL flask Mass 9.398 Volume 29.90

    asked by John
  126. African American

    Amazing fact regarding African American in Randolph County

    asked by ami
  127. Algebra

    Would someone please help me figure this one out? (¡î5 b©ø/©÷)^4 a^9 / a^-©øb^5

    asked by Anonymous
  128. physics instrument

    how to measure vernier caliper? tell me about least count in cm scale and vernier scale least count. how to find the vernier coincidence easily tell me some tips

    asked by nanbala
  129. sociology

    To support a scientific hypothesis, one might (Points : 1)

    asked by Anonymous
  130. Health care admin.

    What are some of the driving forces behind rising health care spending?

    asked by toya
  131. social studies

    Treasure claims that her 6-month-old baby, Precious, can add and subtract small numbers of objects. Recent research on infants' understanding of numbers would: A. indicate that Treasure is nuts. B. prove that Precious can add and subtract up to 20 objects.

    asked by clara
  132. social studies

    Results of Renee Baillargeon's sliding carrot research may suggest that object permanence: A. may not be present until much later than Piaget believed. B. may be present at a much younger age than Piaget thought. C. cannot be tested with

    asked by clara
  133. pre-calculus

    Please diregard the other one the square root sign did not come out right. find the complete function f o g f(x)=x^2+1;g(x)= square root x-4

    asked by ladybug
  134. Math Statistics

    I am stuck can someone help me 19.2 - 21.1 ---------- 3.18 \/25

    asked by Misty
  135. pre-calculus

    find the inverse of the following function. Find the domain, range, and asymptotes of each function. f(x)=3+1n(x+2)

    asked by ladybug
  136. algebra

    John measures the dimensions of a roomto be 16.6ft times 15.23 ft. How many significant digits should he use when calculating the area of the room?

    asked by Carina
  137. geometry

    AB=2x+9,BC=4x-5

    asked by brianna
  138. spanish

    1. what does cuale son los dias de la escupla mean ? 2. what does cual es tu dias favorito de la semana mean ?

    asked by gary
  139. math

    Sanjeev is twice as old as his son.If after four years he will be four times as old as his son was 9 years ago ,how old is each now ??

    asked by TUHITUHI
  140. Social science

    What are the implications for interventions and community development?

    asked by KeKe
  141. Health care admin.

    What key functions and incentives of HMOs affect costs?

    asked by toya
  142. chemistry

    I don't know what he wants me to do with this. This is for extra credit and for good reason. It is way ahead of where we are in the text. This is all the information given. 75g of tartaric acid is used in a titration. What do I do with that?

    asked by What?
  143. algebra

    M --- +. 5= -2 3.

    asked by Natalie
  144. Physics

    A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 20 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 165 m), the block swings toward

    asked by Moises
  145. Math

    Algebra Find the value of 78 X n when n = 3,237.

    asked by Ryan
  146. pre-calculus

    solve the equation (5/2)^2=(125/8) x=

    asked by ladybug
  147. geometry

    Al and Harpreet are racing to Wing Stop to get the last batch of fries made for lunch. Al participates in cross country and can cover (write in value) per minute. Harpreet likes to watch TV and play video games. She is out of shape and can only cover 3

    asked by Dana
  148. Math

    The sum of the ages of Monica and her mother is 70. Monica is 4 less than 1/2 her mother's age. Find their ages. I've been trying to do this for the past 20 minutes. I think the question is wrong, but try for yourself. Help please!

    asked by Catherine
  149. pre-calculus

    solve the equation 5^5x+1=125

    asked by ladybug
  150. pre-calculus

    solve the logarithmic equation. be sure to reject any value of x that is not in the domain of the orginal logarithmic expression. In square root of x+2=2 (If I try to make the square root sign it will not come out right so I wrote it out instead) What is

    asked by ladybug
  151. Critical Thinking/Ethics

    During the last full moon, the ratio to of male to female births was 1.1 to 1 in Toronto but 2.5 to 1 in Timmins, so the effect of the full moon on a baby`s gender is stronger in smaller towns. What is an alternative explanation for that?

    asked by Steph
  152. pre-calculus

    solve for the following exponetial equation. 1.4^x=(0.5)^-x What is the exact answer? A. x= b. There is no solution.

    asked by ladybug
  153. Chemistry

    The mass of a single uranium atom is 4.70E-22 grams. How many uranium atoms would there be in 167 milligrams of uranium?

    asked by Miranda
  154. math

    what is x in: 3.25 + 6x= 23.10

    asked by Christabelle
  155. math

    I still do not understand

    asked by jay
  156. math

    what is cubefor # 64

    asked by steve
  157. Chemistry

    When investigating heat of solution of NaoH& NH4No3, what is the heat of solution of the two cpds?

    asked by Mark