Questions Asked on
September 13, 2010

  1. PHY

    Two snowcats tow a housing unit to a new location at McMurdo Base, Antarctica, as shown in Figure 4-46. The sum of the forces A and B exerted on the unit by the horizontal cables is parallel to the line L, and FA = 4300 N. Determine FB and the magnitude of

    asked by AMI
  2. physics

    If a car rolls gently(vo=0) off a vertical cliff, how long does it take to reach 85km/h?

    asked by john
  3. chemistry

    the mole fraction of urea (molar mass = 60g/mole) in a solution prepared by dissolving 16g of urea in 39g of h2o

    asked by jessie
  4. physics 1

    In coming to a stop a car leaves skid marks 92m long on the highway. Assuming a decceleration of 7.00m/s^2, estimate the speed of the car just before braking.

    asked by john
  5. math

    how do you convert .83 to a fraction

    asked by bren
  6. chemistry

    Write formulas for the compounds that form from {\rm Rb} and each of the following polyatomic ion: {\rm NO}_{3}^{-}, {\rm SO}_{4}^{2-}, {\rm PO}_{4}^{3-}.

    asked by Anonymous
  7. chemistry - vapor pressure

    the vapor pressure of pure water at 25C is 23.8 torr. determine the vapor pressure (torr) of water at 25 C above a solution prepared by dissolving 35g of urea (a nonvolatile, non-electrolyte, MW = 60.0G/MOL) IN 76G of water. answer:21 i just want to know

    asked by billy
  8. Physics Flux

    The electric flux through the surface shown in Figure Ex27.10 is 15.0 Nm2/C, and the electric field makes an angle á = 70° with the surface. What is the electric field strength? The surface is a 10cm by 10cm square.

    asked by David
  9. Physics

    Upon spotting an insect on a twig overhanging water, an archer fish squirts water drops at the insect to knock it into the water. Although the insect is at distance d from the fish along a straight-line path at angle $ (as in the figure here), a drop must

    asked by Antonio
  10. Calculus

    Let F(s)=5s2+5s+4 . Find a value of d greater than 0 such that the average rate of change of F(s) from 0 to d equals the instantaneous rate of change of F(s) at s=1. d=

    asked by Melissa
  11. Chemistry

    I need help setting up this problem: Ethylene glycol has a specific gravity of 1.1088 at room temperature, What is the volume of 1.00 kg of ethylene glycol? What is the volume of 2.00 lb of ethylene glycol? Using 25 degrees Celsius.

    asked by MW
  12. math

    Between what two consecutive whole numbers is the square root of 75

    asked by john
  13. physics 2

    A thin nonconducting rod is bent to form a semi-circle of radius R. A charge Q is uniformly distributed along the upper half and a charge -Q is uniformly distributed along the lower half, as shown int he sketch at the right.find E vector at P, the center

    asked by peter
  14. health

    Identify at least five indicators of project failure that manifest themselves in this case study. Are these right ? these are a few i have came up with: organized inertia lack of clarity of pupose lack of landor project status report insufficient

    asked by brian
  15. statistics

    In a survey of 5100 TV viewers, 40% said they watch network news programs. Find the margin of error for this survey if we want 95% confidence in our estimate of the percent of TV viewers who watch network news programs. Hint, find the CI using 1-PropZInt,

    asked by Rachel
  16. trig

    Sitting in your sailboat, you see a lighthouse 500 feet away. Looking up at a 20°angle, you see the light at the top of the lighthouse. How far off the ground is the light in the lighthouse? Round your answer to the nearest tenth.

    asked by Anonymous
  17. Calculus

    If h(t) represents the height of an object above ground level at time t and h(t) is given by h(t)=-16t2+11t+1 find the height of the object at the time when the speed is zero.

    asked by Melissa
  18. math

    When 2 dozen cans of food are placed in a bucket, the mass is 4560 g. When 18 cans of food are placed in the same bucket, the mass is 3480 g. Find the mass of the bucket?

    asked by brebre
  19. hcs 577

    Why are charges not reported as revenue for health care organizations?

    asked by keisha
  20. physics

    A fisherman's scale stretches 3.9 cm when a 2.8 kg fish hangs from it. (a) What is the spring stiffness constant? N/m (b) What will be the amplitude and frequency of vibration if the fish is pulled down 2.7 cm more and released so that it vibrates up and

    asked by storm
  21. Math

    What is the pattern for 3, 19, 99, 499, 2499

    asked by Will
  22. statistics

    For this problem, assume the balls in the box are numbered 1 through 9, and that an experiment consists of randomly selecting 3 balls one after another without replacement. What probability should be assigned to the event that at least one ball has an odd

    asked by Laura
  23. College Physics

    A particle experiences a constant acceleration that is north at 100 m/s^2. At t=0, its velocity vector is 60 m/s east. At what time will the magnitude of the velocity be 100 m/s?

    asked by Chelsea
  24. physics

    PLEASE HELP !!!!!!Find the acceleration reached by each of the two objects shown in figure below if the coefficient of kinetic friction between the 7.00 kg object and the plane is 0.250. img411.imageshack.us/img411/5841/p449.gif I keep getting 3.9=a

    asked by bill
  25. 9 th science

    distinguish between tolerance range and optimal range

    asked by jin
  26. math

    For this problem, assume the balls in the box are numbered 1 through 9, and that an experiment consists of randomly selecting 3 balls one after another without replacement. What probability should be assigned to the event that at least one ball has an odd

    asked by Laura
  27. 12th grade math

    Identify the domain and range: 1.) y = x^2 / 4x^2 - 1 2.) y = -3 / (x+2)^2 + 1 3.) y = ³√-x^2

    asked by Nicki
  28. math

    A roulette wheel has 18 red slots and 18 black slots numbered alternately with the numbers 1 through 36. Two green slots are numbered 0 and 00. The winning number is determined by the slot into which a single marble rolls. Players are not allowed to bet on

    asked by Sarah
  29. European History

    What are the advantages and disadvantages of Europe’s geography?

    asked by Charbene
  30. Physics

    A man lifts a 2.0 kg stone vertically with his hand at a constant upward velocity of 1.5 m/s. What is the magnitude of te total force of the stone on the man's hand?

    asked by Chelsea
  31. chemistry

    How many oxygen atoms are in 10.3 g of CuSO4*5H2O? What is the mass percent of carbon in C(12)H(22)O(11)?

    asked by Sarah
  32. Physics

    A rocket is fired vertically with an upward acceleration of 30 m/s2. After 20 s, the engine shuts off and the rocket then continues rising (while in free-fall). The rocket eventually stops rising and then falls back to the ground. (a) What is the highest

    asked by Jackie
  33. molal

    the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol.

    asked by lisa
  34. arithmetic

    james has a metal fame with an 8.32 inch perimeter. if the sides are .04 inches thick, what is the perimeter of the inside of the frame

    asked by natasha
  35. Physics Gauss

    A long, thin straight wire with linear charge density -λ runs down the center of a thin, hollow metal cylinder of radius R. The cylinder has a net linear charge density 2λ. Assume λ is positive. Find expressions for the electric field at the following

    asked by David D.
  36. physics

    Annie is walking to school leisurely at a speed of 1.0 m/s for the first half of her trip. She then remembers that her physics teacher told her that she must average 2.5 m/s to make it to school on time. Realizing she might be late, she starts running.

    asked by Kyle
  37. gr 12 physics

    A person standing at the edge of the water and looking out at the ocean/ The height of the person's eyes above water is h=1.6m. and radius of the earth is R=6.38x10^6m How far is it to the horizon. In other words, what is the distance d from the person's

    asked by fan
  38. geometry

    point G is the midpoint of EF EG= 4x+12 and EF= 2x+30. How do i find GF?

    asked by k
  39. Chemistry

    A chemist carries out a reaction between 10.0g of sodium and 20.0g chlorine. Which reactant element is present in excess? What quantity of sodium chloride is produced? What quantity of the elment in short supply would have been required to react with all

    asked by Austin
  40. Physics

    A relay race is run along a straight line track 300.0 m long running south to north. 1st runner - starts at the South end of the track and passes the baton to a teammate at the north end of the track. 2nd runner - races back to the start line and passes

    asked by Kayla
  41. math

    jenna wants to purchase a pad of drawing paper for $5.00, a charcoal pencil for $0.75, and an eraser for $1.25. how much money doses she need altogether to buy the supplies

    asked by jojo
  42. Physics

    Annie is walking to school leisurely at a speed of 1.0 m/s for the first half of her trip. She then remembers that her physics teacher told her that she must average 2.5 m/s to make it to school on time. Realizing she might be late, she starts running.

    asked by Dianne
  43. Physics

    A car slams on its brakes, coming to a complete stop in 4 sec. The car was traveling north at 60 mph. Calculate the acceleration

    asked by April
  44. Science-Chemistry

    I did a lab on Elements and Compounds and I would be grateful if u could provide and tell me some information on my work. Lab --Investigation--Elements and compounds. Can an element be separated from a compound? Can an element form a compound? In this

    asked by Immy
  45. analogy

    large is to small, feast is to

    asked by peter
  46. Physics

    Kyle is flying a helicopter and it is rising at 6.0 m/s when he releases a bag. After 2.0 s (a) what is the bag's velocity? -13.6 m/s (b) how far has the bag fallen? (c) how far below the helicopter is the bag?

    asked by Billy
  47. statistics

    Find the p-value for each test statistic. a. Right-tailed test, z=+1.34 b. Left-tailed test, z=−2.07 c. Two-tailed test, z=−1.69

    asked by kim
  48. Chemistry

    Oxygen reacts 1:2 with sodium and is a colourless gas; chlorine reacts 1:1 with sodium and is a yellow gas; neon does not reacts with sodium and is a colourless gas. Suppose that a new element , pretendium, has been dicovered, and it is noted that this

    asked by Anonymous
  49. More Math

    I do not understand this: Evaluate and simplify f(x+h)-f(x)/h if f(x)=x^2-2x

    asked by John
  50. English

    1. The woman working in the farm is a foreigner. 2. The woman working on the farm is a foreigner. (Which preposition do we have to us before 'the farm'? Are both OK?)

    asked by rfvv
  51. physics

    A thin nonconducting rod is bent to form a semi-circle of radius R. A charge Q is uniformly distributed along the upper half and a charge -Q is uniformly distributed along the lower half, as shown int he sketch at the right.find E vector at P, the center

    asked by peter
  52. Physics

    A football kicker can give the ball an initial speed of 31 m/s. What are the (a) least and (b) greatest elevation angles at which he can kick the ball to score a field goal from a point 49 m in front of goalposts whose horizontal bar is 3.44 m above the

    asked by Antonio
  53. Physics

    a baseball is hit at a height h = 1.10 m and then caught at the same height. It travels alongside a wall, moving up past the top of the wall 1.2 s after it is hit and then down past the top of the wall 3.2 s later, at distance D = 53 m farther along the

    asked by Antonio
  54. Physics

    a ball is thrown up onto a roof, landing 4.70 s later at height h = 24.0 m above the release level. The ball's path just before landing is angled at  = 62.0° with the roof. (a) Find the horizontal distance d it travels. (Hint: One way is to reverse the

    asked by Antonio
  55. Physics

    A particle leaves the origin with an initial velocity = (6.91 ) m/s and a constant acceleration = ( - 2.38 - 2.79 ) m/s2. When the particle reaches its maximum x coordinate, what are (a) its velocity, (b) its position vector?

    asked by Antonio
  56. MATH

    Given the GCF or LCM, what else do you know about each pair of numbers? a) Two numbers have GCF of 2. b) Two numbers have an LCM of 2. Please and thankyou!

    asked by Vanessa
  57. Chemistry

    Alicia's cheapskate boyfriend gave her a ring he claims is 24 carat gold. Alicia is skeptical. After chem class the next day she measures the mass of the ring, finds the volume of the ring by water displacement, and then calculates the density of the ring.

    asked by Patrice
  58. 7th grade

    What is the unscrambled fruit or vegetable with the letters bekrechuryl?

    asked by Frederick
  59. chem

    How much water would be needed to completely dissolve 1.64 L of the gas at a pressure of 750 torr and a temperature of 21 C? Henrys law constant is .145 M/atm.

    asked by moe
  60. chemistry

    A solution of sodium nitrate, NaNO3, in 200 g of water is saturated at 50°C. If the solution is cooled to 20°C, how many grams of sodium nitrate will precipitate from the solution?

    asked by KSLE
  61. Science (Nutrition)

    Which hormone signals the pancreas to secrete bicarbonate into the small intestine? Which hormone tells the pancreas to secrete pancreatic lipases, proteases, and amylases into the small intestine?

    asked by Stacy
  62. chem

    What mass of sucrose should be combined with 524 g of water to make a solution with an osmotic pressure of 8.50 atm at 270 K? I keep working this and end up with 68.81g but it is not right, any help?

    asked by moe
  63. Physics

    The electric flux through the surface shown in Figure Ex27.10 is 15.0 Nm2/C, and the electric field makes an angle α = 70° with the surface. What is the electric field strength? The surface is a 10cm by 10cm square.

    asked by David D.
  64. statistics

    Solve the problem. The lifetime of a new brand of light bulb can be described by a Normal model with a mean of 2000 hours and a standard deviation of 250 hours. Find the percentage of light bulbs that will last more than 2600 hours. A.) 100% B.) 5% C.)

    asked by Anonymous
  65. Math - asymptotes

    Identify all asymptotes. 1. y= 1 / 2-√x^2 - 3x the asymptotes I got were: vertical: 1 & 4 horizontal: 0 Is this it or are there more? 2. y= x^3-2x / x^2 + 1 I believe there are no asymptotes? Is this correct?

    asked by Jared
  66. line segments,lines and rays

    how you draw a label line segment

    asked by tina
  67. Child Psychology

    By the age of ___,a child's perceptual map for phonetic discrimination is A. one month B. six months C. one year D. five years

    asked by Anonymous
  68. Chemistry

    5.00 g is equal to how many pounds?

    asked by Taylor
  69. math

    forgot my math book at school, i need the questions saxon math grage 6 lesson 14

    asked by kolbi
  70. European History

    What is the relationship between the study of geography and the study of history?

    asked by Charbene
  71. math

    two students are playing with a six-sided number cube. the probabilty of tossing a number greater than 13 and less than 24 is 6/6 or 1. what are the possible numbers on the cube?

    asked by Darlene
  72. European History

    Explain the impact of Europe’s geography on European History.

    asked by Charbene
  73. drama

    how do you write the crtique of a movie

    asked by Ted
  74. physics

    An object with constant acceleration has velocity v = 12 m/s when it is at x = 6 m and v = 17 m/s when it is at x = 10 m. What is its acceleration?

    asked by katharine
  75. science

    When a parent radioactive nucleus splits by ejecting an alpha particles (two protons and two netutrons), the remaining nucleus has ____ the original nucleus. a) two protons and two neutrons more than b) two protons more and two neutrons less than c) two

    asked by pam
  76. Physics

    A car is driven east for a distance of 46 km, then north for 27 km, and then in a direction 35° east of north for 24 km. Determine the angle (from east) of the car's total displacement measured from its starting direction.

    asked by Evin
  77. physics

    A man is pulling on a rope with a force of 65 N directed at an angle of 26◦ to the horizontal. What is the x-component of this force? Answer in units of N.

    asked by Brooke
  78. physics

    A helicopter is rising at 5.1 m/s when a bag of its cargo is dropped. (Assume that the positive direction is upward.) (a) After 2.0 s, what is the bag's velocity? (b) How far has the bag fallen? (c) How far below the helicopter is the bag?

    asked by penny
  79. Word Problems

    1. Express the area of a square as a function of its diagonal. 2. The height of a cylinder is half the diameter. Express the total surface area as a function of the height. SA = 2πh + 2πr^2

    asked by Jackie
  80. Physics

    An airplane can reach a takeoff speed of 45 m/s (from rest) in 7.0 seconds. What is the minimum runway length required for a safe takeoff?

    asked by Kyle
  81. Science-Physics HELP

    A S.S. automobile travels N at 40 km/h and a P.A. automobile travels E at 50 km/h. Relative to the observer riding in the S.S. auto what are the x and y components of the velocity of the P.A. car? The x axis is to the E and the y axis is to the N.

    asked by AJ
  82. chemistry

    What is the positively charged part of an atom called? electron or proton

    asked by junior
  83. physics

    A wood block, after being given a starting push, slides down a wood ramp at a constant speed. What is the angle of the ramp above horizontal? The fact that there aren't any numbers involved here and a certain angle is required confuses me. I know it

    asked by Alura
  84. spanish

    please check my homework. 1. Yo__estoy___ en mi casa (in my house). 2. Jose, María, y yo _____estoy____ alegres. 3. Mario, tú, y yo ____estoy______ en el cine (at the movies). 4. El perro ___estamos_____ en el parque (at the park.) 5. Usted ____esta_____

    asked by whitney
  85. Math - function problems

    1) A box with a square base has a total surface area of 12m^2. Express the volume of the box as a function of the base edge. 2) A 10 foot tall lamppost causes a child 4 feet tall to cast a shadow of x feet on the ground. If the distance along the ground

    asked by Amie
  86. chemistry

    Which is the Standard International (SI) unit of temperature? Kelvin or Celsius

    asked by junior
  87. QNT561

    Refer to the Baseball 2005 data, which reports information on the 30 major league teams for the 2005 baseball season. a. Select the variable team salary and find the mean, median, and the standard deviation. b. Select the variable that refers to the age

    asked by Anonymous
  88. Physical chemistry

    Calculate the pressure exerted by 1.0 mol C2H6 behaving as a perfect gas

    asked by Melissa
  89. math

    what is algebra

    asked by nevel
  90. english

    What is mixed word order?

    asked by Bre
  91. Physic

    It is possible to shoot an arrow at a speed as high as 121 m/s. (a) If friction is neglected, how high would an arrow launched at this speed rise if shot straight up?

    asked by Matt
  92. Physics

    At t = 0, a stone is dropped from a cliff above a lake; 2.0 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff.

    asked by Hannah
  93. berkner

    what would happen if correct new edvidence was discovered that did not agree with a weel established scientific theory?

    asked by kj moore
  94. GEOMETRY HELP!

    Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use

    asked by Leasha
  95. English

    Can you please check if the following questions are grammatically correct? Thank you very much. 1)What does Bassanio need money for? OR Why does.... He needs money so that he can go to Belmont and court Portia. 2) What solution does Antonio suggest to him?

    asked by Franco
  96. maths

    perform the indicated operation and simplify 1/16+3/32

    asked by Anonymous
  97. 11th grade

    4 x^3 - 4x^2 - 11x + 6 = 0 Need to solve the equation algebraically

    asked by sarabeth
  98. English

    I forgot to include the following sentences. 1) Express the following sentences using a proverb (or through a proverb) Example: Having too many people doing something usually causes problems. 2)Who does Shyloch pay to help him find his daughter Jessica? 3)

    asked by Franco
  99. math

    WRITE A PROBLEM IN WHICH YOU WOULD USE THE FUNCTION RULE y=20X

    asked by Anonymous
  100. physics

    A roller coaster travels 10.6 m at an angle of 15.0◦ above the horizontal. How far does it move horizontally? Answer in units of m.

    asked by Wendia
  101. Algebra

    we need help and the steps to solve 5x-y=18 and 5x+6y=-38. we need the ordered pairs if any. So far we came up with (6,-9). Thanks Team A

    asked by Team A
  102. math

    What is the Rule for a function table with the following information. A child's admission is $4 more than half an adults admission. Input (x) as follows: 20, 26, 30, and 42. Thanks

    asked by Michael
  103. statistics

    Scores on a certain test are normally distributed with a variance of 14. A researcher wishes to estimate the mean score achieved by all adults on the test. Find the sample size needed to assure with 95% confidence that the sample mean will not differ from

    asked by Sarah
  104. physics

    In the diagram below, qA = 9.8 µC & qB = -1.4 µC. There is no charge at point C. The distance between A & C is 2.1 cm and the distance between B & C is 9.6 cm. Find the electric potential at point C

    asked by Greg
  105. hcs 577

    4. Why the U.S. health care system is considered complex

    asked by keisha
  106. 8th grade

    can afsedrniru be unscrambled into a noun? :)

    asked by duckie
  107. Science-Chemistry

    Analysis questions: A) What evidence is there that the gas bubbles formed in the first part of the investigation were hydrogen gas? Answer: Evidence there was that proved that the gas bubbles formed in the first part of the investigation were hydrogen gas

    asked by Immy
  108. Earth Science

    During the Dinosaur Ages, if there was a region with a mountain range, alluvial plain, and a shallow sea. Which place would it be the most likely for dinosaur fossils to be formed?

    asked by Joe
  109. 9th grade math

    if a man mixes 12 lbs. of peanuts that's $1.25 a lbs. with a pound of cashews at $1.80 a lbs. how many pounds of cashew do you need to make a $1.50 a lbs. mixture explain in words and numbers

    asked by Giorgio
  110. physics

    A roller coaster travels 10.6 m at an angle of 15.0◦ above the horizontal. How far does it move vertically ? Answer in units of m.

    asked by Wendia
  111. Family life

    Give the marriage laws in The state of Georgia.

    asked by TOM
  112. chemistry

    how many significant figures does 221.5 have

    asked by junior
  113. statistics

    A hotel installs smoke detectors with adjustable sensitivity in all public guest rooms. (a) State the null and alternative hypotheses. (b) Define Type I and II error. What are the consequences of each? (c) Which is more to be feared, and by whom? (d) If

    asked by Shon
  114. Math

    Explain how you would use a number line to round 148 to the nearest ten.

    asked by June
  115. math

    From a point on a straight road, two cars are driven in opposite directions, one at 44 miles per hour and the other at 35 miles per hour. In how many hours will they be 237 miles apart?

    asked by karla
  116. Math

    How would you solve this if f(x)= {(3,5),(2,4),(1,7)}?: 1/f(x)

    asked by John
  117. latin

    WHAT DOES SILVAS CLARAS INSULAE MAGNAE SPECTATIS MEAN IN ENGLISH?

    asked by BONNIE
  118. statistics

    Use Excel to find the p-value for each test statistic.a. Right-tailed test, t = +1.677, n = 13 b. Left-tailed test, t = −2.107, n = 5 c. Two-tailed test,t = −1.865, n = 34

    asked by kim
  119. chemistry

    labelled diagram of an experiment magnesium with oxygen

    asked by alex
  120. geography

    Which is the largest sea, North, Mediterranean, Caspian or South China Sea?

    asked by Anonymous
  121. 12th grade

    solve (24e)^1/3 / (3e)^1/3

    asked by gav
  122. 3rd grade

    Explain how you would use a number line to round 148 to the nearest ten.

    asked by Alexis
  123. physics

    A stone is thrown horizontally with an initial speed of 10 m/s from the edge of a cliff. A stop watch measures the stone's trajectory time from the top of the cliff to the bottom to be 4.3 s. What is the height of the cliff?

    asked by Indira
  124. 6th grade math

    how can you change a one dollar bill into exactly 50 coins, using at least one penny, one nickel, one dime and one quarter please?

    asked by cameron
  125. physics

    Two parallel plates, separated by 10 mm, are charged to a potential difference of 50 V (that is, one plate is 0 V and the other plate is 50 V). Which of the following statements are true? the electric potential at the midpoint between the plates is 50 V

    asked by VJC
  126. hcs 577

    4. Why the U.S. health care system is considered complex?

    asked by keisha
  127. chemistry

    In the movie "The Raiders of the Lost Arc", Indiana Jones and his guide play catch with a gold idol. The idol had a volume of about 1.30 L. In order to determine whether they could really play catch with the idol, calculate the weight (in pounds) of the

    asked by anon
  128. English 2

    12. In "Two Kinds", what motivated Jing-mei to keep silent about her performance at the piano recital, never discussing the recital with her mother? a. She fears her mother feels betrayed by her failure b. She thinks her mother will become angry if she

    asked by mysterychicken
  129. Geometry

    B is the midpoint of AC, if AB=3x+4 and AC = 15x-19, find x and bc

    asked by Annon
  130. English

    Thank you very much for helping me. Can you check these sentences, too? Thank you. 1) According to Venetian law a debtor was given a thirty day grace period after the deadline in order to pay his debt. 2) If the debtor failed (or had failed) to pay the

    asked by Franco
  131. Chemistry

    What properties differ between the elements in the akali metals and the elements in the akaline earth metals? The akali metals have a charge of 1+, and the akaline earth metals have a charge of 2+.

    asked by Anonymous
  132. 10th grade math

    Which expression repeersents the phrase'' twice the quotient of 50 and the sum of a number y and 8?''

    asked by Dawn
  133. math

    2/3x-6=22

    asked by madelyn
  134. Chemistry

    Which metals are good conductors of electricity? I only need like 3. This is what I have: -Copper, Gold, and Silver. Is that good?

    asked by Anonymous
  135. hcs 577

    5. Do health care organizations typically get paid based on their established charges? If not, explain how they do get paid.

    asked by keisha
  136. chem "help"

    What is the ratio of the activities of Zn 2+ and Pb 2+ in a solution that is in equilibrium with respect to sphalerite and galena?disregard hydrolysis effect

    asked by moon
  137. physics

    An object is shot from the back of a railroad flatcar moving at 40 km/h on a straight horizontal road. The launcher is aimed upward, perpendicular to the bed of the flatcar. The object falls: a) in front of the flatcar b) behind the flatcar c) on the truck

    asked by Antonio
  138. 9th grade math

    Translate the phrase into an expression The product of 6 and a number y how would i write that?

    asked by Allyson
  139. economics

    what does economy means?

    asked by makalay
  140. 12th Grade Maths

    simplify (e is positive) (24e)^1/3 / (3e)^1/3

    asked by dave
  141. Physics

    how much work is required to extend an exercise spring by 15 cm if the spring constant k has the value of 800 N/m

    asked by John
  142. 10th grade math

    Number of pages of a 5 page articile left to read if you read p pages.

    asked by Dawn
  143. math

    Explain how a number can name something.

    asked by Austyn
  144. Math

    Please help!! We can determine the time it would take an object to fall (if there were no air resistance) by using the formula where d is the distance.t=1/4sq.root of d, d being the distance 1. We can determine the time it would take an object to fall (if

    asked by Ashley
  145. algebra II

    list all elements of the set {9,0 squareroot3, squareroot25,6/7,-110} that are elements of the set of rational numbers

    asked by kattey
  146. physics

    Two cars both start from rest and have the same constant acceleration. When radar is used to measure the velocity of each car, car A is found to be moving twice as fast as car B. At the instant the radar is used, car A has a displacement that is ______

    asked by Joey
  147. 9th grade

    wat is 7m-3m-6=6 can you please tell me how you got that answer?

    asked by Alexus
  148. ethics

    what does kant mean by a good will without qualification?

    asked by justin
  149. geometry

    B is the midpoint of line AC. If AB = 12x-5 and BC = 4x + 15. Find x and BC.

    asked by Anonymous
  150. Geometry

    Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use

    asked by Leasha
  151. Cultural Diversity

    What are the linguistics of Puerto Rican Americans

    asked by michelle
  152. 9th Grade Algebra 1

    I need someone to tell me how to do these kinds of problems (In great detail please) -5x=9-2x -8x-10=4x+14

    asked by Nicole
  153. SCIENCE

    A car going at 30 m/s undergoes acceleration of 2 m/s^2 for 4 sec. What is its final speed? How far did it travel while it was accelerating? acceleration=the change in velocity/(divided by) the change in time plz help thx

    asked by Happy Face
  154. Statistics

    An educator wants to estimate the proportion of school children in Boston who are living with only one parent. Since their report is to be published, they want a reasonably accurate estimate. However, since their funding is limited, they do not want to

    asked by Sarah
  155. physics

    A spring with a spring constant of 1.50 102 N/m is attached to a 1.2 kg mass and then set in motion. (a) What is the period of the mass-spring system? s (b) What is the frequency of the vibration? Hz

    asked by storm
  156. physics

    A child's toy consists of a piece of plastic attached to a spring, as shown below. The spring is compressed against the floor a distance 1.8 cm and released. If the spring constant is 107 N/m, what is the magnitude of the spring force acting on the toy at

    asked by storm
  157. physics

    In preparing to shoot an arrow, an archer pulls a bowstring back 0.43 m by exerting a force that increases uniformly from 0 to 268 N. What is the equivalent spring constant of the bow? N/m

    asked by storm
  158. biology

    an atom that gains for loses electrons has an electrical charge and is called an _____.

    asked by greg
  159. Math

    Explain how numbers can be used to name something.

    asked by Betsy
  160. Geography

    What is the largest river that empties into the Pacific Ocean?

    asked by Kathy
  161. SCIENECE!!

    A car going at 30 m/s undergoes acceleration of 2 m/s^2 for 4 sec. How far did it travel while it was accelerating?? Plz help thx

    asked by Happy Face
  162. US History

    Need help with this-- Should English be declared the official language of the US? List three effects that you believe such a law would have. Then write one paragraph explaining your position. I think it should be declared the official language, but I'm not

    asked by mysterychicken
  163. biology

    _________ occur when bonds are broken or formed

    asked by greg
  164. Alg. 1

    10x-5=21-3x

    asked by Laura
  165. Math

    Use the limit definition of the derivative to find f′(x) if 1. f(x) = x^2 + 3x 2. f(x) = 1/x + 1 kk for number one i got f'(x) = 2x+3 and for number two i got f'(x) = -1/(x+1)(x+1) can any one verify these, especially number 2.

    asked by catherine
  166. accounting

    E4-1 The trial balance columns of the worksheet for Briscoe Company at June 30, 2008, are as follows. BRISCOE COMPANY Worksheet For the Month Ended June 30, 2008 Trial Balance Account Titles Dr. Cr. Cash $2,320 Accounts Receivable 2,440 Supplies 1,880

    asked by Kris
  167. 8th grade algebra

    -12x=14-5x please and thank you!

    asked by Laura
  168. Physics

    Two motorcycles are traveling due east with different velocities. However, 2.16 seconds later, they have the same velocity. During this 2.16-second interval, motorcycle A has an average acceleration of 1.30 m/s2 due east, while motorcycle B has an average

    asked by Jeff
  169. math 11th grade

    evaluate each function. g(x)=|x-2|+3;find g(0)

    asked by jessie
  170. geometry

    At rosemead high school, 94 students take biology, 86 take ethnic studies, and 95 take geometry. thirty-seven students take both biology and geometry, 43 take geometry and ethnic studies, and 42 take ethnic studies and biology. twenty eight students take

    asked by Audrey
  171. Physics

    A cat rides a merry-go-round turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is (3.00 m/s) + (2.70 m/s) , measured on a horizontal xy coordinate system. At t2 = 5.90 s, its velocity is (-3.00 m/s) + (-2.70) . What are (a) the

    asked by Antonio
  172. math

    write each addition vertically.decide which new groups you will make.then,add to see if you were correct. 256+1273___________ a new ten?____________ a new hundred?_________ a new thousand?____________ need answers and please explain

    asked by Tracy
  173. physics

    A boy whirls a stone in a horizontal circle of radius 1.3 m and at height 2.0 m above level ground. The string breaks, and the stone flies off horizontally and strikes the ground after traveling a horizontal distance of 9.8 m. What is the magnitude of the

    asked by Antonio
  174. math

    write each addition vertically.decide which new groups you will make.then,add to see if you were correct. 256+1273___________ a new ten?____________ a new hundred?_________ a new thousand?____________ need answers and please explain

    asked by Tracy
  175. Lang Arts

    Can you tell me four homonyms.

    asked by Yan
  176. Just One More Math

    How would you solve this if f(x)= {(3,5),(2,4),(1,7)}?: 1/f(x)

    asked by John
  177. English

    Thank you very, very much for your corrections. Here are the last sentences for you to check. 1) What does Portia take from Antonio? 2) What does Graziano try to convince Nerissa of? He tries to convince Nerissa that he gave the ring to a clerk. 3) What

    asked by Franco
  178. arithmetic

    what is an abundant number

    asked by ry
  179. criminal justice 220

    How can prosecutors ensure they don't allow their own personal bias's to influence their actions in the courtroom.

    asked by llisa
  180. Tricky Math Question

    18, 9, 12, 15 There are four bags of marbles. One of them contains 18, one of them contains 9, one contains 12, and the other one contains 15 marbles. If I remove three marbles (must be three) and distribute one each of the other bags, that would be ONE

    asked by Clara Wang
  181. math

    if a roof has a pitch of 5 degrees and the horizontal lenght is 5.29 metres how high is the vertical?

    asked by tim
  182. math

    2 gal 3 qt + 5 gal 2 qt ________________

    asked by Anonymous
  183. English

    1. Please take a picture of the dog that is running. 2. Please take a picture of the dog running. (Is #2 correct? In Sentence 2 'that is' is missing.)

    asked by rfvv
  184. criminal justice 220

    how much can our own beliefs influence our actions? Are prosecutors immune from this?

    asked by llisa
  185. math

    If 5/17 of a region is shaded, what fraction is not shaded?

    asked by Alexander
  186. MATH

    WRITE EACH ADDITION VERTICALLY. DECIDE WHICH NEW GROUPS YOU WILL MAKE. THEN, ADD TO SEE IF YOU WERE CORRECT.

    asked by BYNN
  187. physics

    a man walks 10 meters in a direction of 20 degrees North of East, then 20 meters in a direction due west. What is his total displacement vector in component form

    asked by Anonymous
  188. algebra 2

    10-[5+9{4}]

    asked by LC
  189. algebra 2

    1/2 {9+5[-3]}

    asked by LC
  190. Psych

    Can someone please give me an example that illustrates how one's cognitive processes can shape some aspect of personality. thank you?

    asked by Carmen
  191. algebra

    Find the indicated outputs for f(x)=4x^2 -4x f(0) f(-1) f(2)

    asked by Sue
  192. Geography

    I am having A LOT of trouble locating river Severn on a map of the UK. I don't have and atalas with me and I can't find a map that shows me. Thank you!

    asked by Anonymous
  193. 7th grade

    this is from homework work book . write each fraction or mixed numberas a decimal. use bar notation if the decimal is a repeating decimal

    asked by naida
  194. english

    How do I teach my first grader the parts of a sentence. She gets the subject confused with predicate. She had a test and she was given a 33F. I want her to succeed in school. She scored 100 in her reading and math. Please help me!

    asked by Keysha
  195. European History

    Can someone please describe the geography of Europe to me or give me a place that I can read on it. I need to answer a question that asks what the disadvantages of Europe's geography are. Thanks

    asked by Sally
  196. science

    What are the chemical elements in citric acid?

    asked by bob
  197. math

    18x^2 minus x minus 4 simplified.

    asked by Samantha
  198. SCIENCE!!--ANONYMOUS PLEASE ANSWER MY QUESTION!

    plz answer the question we were talking about plz plz. Go back to the problem. I got 184 but the worksheet answer says 136 which is correct?? plz help!! thx

    asked by Happy Face
  199. BEH/225

    Consider the following chain of events. Describe in 350-700 words the sensory process that takes place as the scenario unfolds.

    asked by Laura
  200. math

    find the roots of f(x)=x^2-1.5x+1

    asked by brenden
  201. science

    Spider plants, tulips and potatoes can grow from seeds. How are their other ways of reproducing alike?

    asked by cheyenne
  202. math

    a person has $4 in nickles, quarters, and dimes. there is a total of 36 coins altogether. the number of quarters is 4 less then the number of dimes. Algerbaicly determine the number of each type of coin using a system of 3 equations with 3 variables.

    asked by Bob
  203. college: psychology

    3. Define proactive & retroactive inhibition. Create a memory strategy to help you remember & discriminate between them. Explain this strategy well enough so that a reader could learn to use it.

    asked by hannah
  204. 4th grade Shurley English

    Do I need a comma after 1893 in the sentence "Basketball was then introduced in 1893 in France."? Thanks.

    asked by Susan
  205. 5th grade

    how do I break apart to divide

    asked by rakhim
  206. physics

    if you jump upward with a speed of 2mls, how long will it take before you stop rising?

    asked by chris
  207. college economics

    Assume Nebraska and Virginia each have 100 acres of farmland. The following table gives hypothetical figures for yield per acre in the two states: Nebraska Virginia Wheat 15 5 Cotton 7 4 Who has the comparative advantage in the production of wheat? *For

    asked by Stephanie
  208. scinece

    In the United States, rank order the users of energy from smallest to biggest: Smallest Biggest a) industry home transportation b) transportation industry homes c) homes industry transportation d) homes transportation industry e) transportation homes

    asked by pam
  209. biology103

    what consists of the interactions between groups of different individuals and the nonliving factors in a particular area

    asked by Anonymous
  210. math

    I am trying to find a pattern in these numbers. I have looked for what feels like hours, and can't find it. -3,-9,-14,-42,-47,-141

    asked by Jake
  211. health

    Case Study – Memorial Health System CPOE Implementation Identify at least five indicators of project failure that manifest themselves in this case study. 2. For each of those indicators, describe what you might have done differently to eliminate or

    asked by brian
  212. physics

    a basketball player can leap upward 0.5m. what is his initial velocity at the start of the leap?

    asked by chris
  213. science

    U.s. citizens use _______ energy than do people in other countries with about the smae or even higher standard of living. a) much less b) a little less c) a little more d) much more d

    asked by pam
  214. AP Stats

    I generally know how to use the normalcdf function on my calculator, but how to I find the area under a normal curve if there is no lower limit or no upper limit? For instance, we are required to use a calculator on this problem: Find the area under the

    asked by Emily
  215. chemistry

    What is the concentration of this solution? If you added 10mL of water to the 10mL of 0.010M CaCl2 solution.

    asked by fredy
  216. high school

    what arguements did the thinkers of the classical civilzations of greek, china, and india use to explain and justify the great differences in social status and material wealth

    asked by Anonymous
  217. math

    whats the sum of a number and -5 and a number

    asked by Nancy
  218. Language Arts

    What are 5 general elements or characteristics of the tall tale John Henry?

    asked by Kellie
  219. 4th grade

    i am a 5 digit number my tens digit is the sum of my hundreds digit and thousands digit. my tens digit is twice my ones digit.my hundreds digit is 1 more than zero.my thousands digit is seven times my hundreds digit.my ten thousands digit is the same as my

    asked by luzia
  220. Science-Chemistry

    Analysis questions: A) What evidence is there that the gas bubbles formed in the first part of the investigation were hydrogen gas? Answer: Evidence there was that proved that the gas bubbles formed in the first part of the investigation were hydrogen gas

    asked by Immy
  221. 8th grade

    what is 117 put in simplest form

    asked by devontae
  222. business

    What 5 types of changes would take place in Canadian citizens if Canada were to become self-sufficient. (our teacher said they can be positive and others negative, but personally I don't think it would be negative? please help!!

    asked by Tesy
  223. physics

    A truck has to travel at what speed to stay underneath an airplane traveling at 105 kg/h at 25% angle to the ground.

    asked by Captain K
  224. alegebra

    1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where

    asked by linda
  225. structure / physic

    1. Aquarium (Retaining Buttresses) Background: In a liquid, pressure develops from the weight of the liquid above any point. That pressure is called Hydrostatic pressure and acts equally in all directions. The pressure at any given depth is given by the

    asked by katherine
  226. chemistry

    A solution is made at room temperature containing 90 g of NaCl and 200 g of water. It is brought to a temperature of 50°C. What are you most likely to see? (Select all that apply.) A. a solution with a few crystals at the bottom B. all the solid dissolve

    asked by KSLE
  227. drama

    Any ideas for a funny parody fairytale - good still winning over evil? I also need to make a role play out of this, so any ideas to do with plays are greatly appreciated.

    asked by sally
  228. math

    how can estimating help you add two-digit numbers?

    asked by p
  229. English

    Here are some more sentences on school rules I'd like you to revise. Thank you very much for all. 1) You are not allowed to change your sitting order unlesstold by your tutor. You have to sit in the same place when you are in the linguistic laboratory.(how

    asked by Franco
  230. English

    I forgot to include these other sentences I'm not sure of. 1) I joined the Scouts in 1990. I went on a summer camp with the Scouts in July. 2) We camped in the mountains. We put up our tents as soon as we got there. 3) In the evenings() we made bonfires

    asked by Franco
  231. john marshall

    i don't understand how to do this prblem what is ab=x +7,bc=17,ac =2x

    asked by erica
  232. Social science

    I want some highlights on a course called economics education

    asked by Emeka
  233. geometric series

    what is the nth term equation for a geometric sequence with a1 = 36 and r = 1/3

    asked by raven
  234. geometry

    1) In a regular polygon the difference between the interior angles of a (n-1)sided polygon & (n+1)sided polygon is 9. find n? 2) In a regular polygon the difference between the exterior angles of a (n-1)sided polygon & (n+2)sided polygon is 6. find n?

    asked by Anoop
  235. Data Communication Networking

    Fill-in the Blank: The ____ layer of the OSI model performs a series of miscellaneous functions necessary for presenting the data package properly to the sender or receiver. Choices: transport presentation applications sessions

    asked by Shah
  236. Maths

    This mystery number has 3 digits.Its digits are in the descending order. The hundreds' digit is two more than the ones' digit. If you add the 3 digit it gives you a dozen. Guess this mystery number?

    asked by Sharlet
  237. molal

    the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol.

    asked by lisa
  238. maths

    This mystery number has four digits. Each digit is an even number. All the digits are different. It is the greatest number that can be described that way. guess this mystery number?

    asked by Sharlet
  239. 5th grade math

    Im confused please help thank you To find the volume of a box, you multiply the length times the width time the height. The colume of a box is 36,000 cubic inches. Its width is 40 in and its height is 15 in. Eatimate the length of the box.

    asked by Dakota
  240. math

    how is .83 equal to 5/6

    asked by bren
  241. calculus

    solve the equation: 6P=Pe^1.1t

    asked by nik
  242. math 5 grade

    longest multiplication combination for 210

    asked by zahra
  243. Biochem

    HEPES, is a commonly used component of physiological buffers. The PKa of the protonated amino group of HEPES is 7.55 at 25C. Describe the preparation of 1.00L of 0.100M HEPES buffer, pH 8.00, from the sodium salt of the basic form of HEPES (MW 260.3), .0M

    asked by Angel
  244. 9TH GRADE MATH

    21=5-3=7-9*2=

    asked by JOSH
  245. Geometry

    Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use

    asked by Leasha
  246. Tricky Math Question

    15, 10, 13, 14 There are four bags of marbles. One of them contains 15, one of them contains 13, one contains 10, and the other one contains 14 marbles. If I remove three marbles (must be three) and distribute one each of the other bags, that would be ONE

    asked by Clara Wang
  247. calculus

    Solve: sec(x)^2= 3tanx +1 *** It is suppose to be the sqaure root of 3 but i could find the symbol so just wrote the 3 without it but it is suppose to be the square root of 3 times tanx + 1

    asked by Jack
  248. Physics

    A hockey puck sliding on a frozen lake comes to rest after traveling 160 m. If its initial velocity is 2.3 m/s, what is its acceleration (assumed constant)? Answer in units of m/s2.

    asked by STOW
  249. Geometry

    Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use

    asked by Leasha
  250. calculus

    Find all possible radii of circle centered at (3,6) so that the circle intersects only one axis

    asked by Jack
  251. phy

    Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15. (a) Calculate the acceleration of the system.(to the

    asked by AMI
  252. math

    how do you cange 14/30 into a desimal and precent?

    asked by kris
  253. MATH 116

    • How do you know when an equation with one variable has infinitely many solutions? • How do you know when an equation with one variable has no solution? • How do you know when an equation with one variable has one solution? • Give an example of

    asked by TONY
  254. Science

    What is it called when scientists do their experiments more than once to reduce chance errors?

    asked by Matthew
  255. Data Communications / Networking

    True Or False: Network Architectures are cohesive layers of protocols defining a set of communication services.

    asked by Shah
  256. geometry

    At rosemead high school, 94 students take biology, 86 take ethnic studies, and 95 take geometry. thirty-seven students take both biology and geometry, 43 take geometry and ethnic studies, and 42 take ethnic studies and biology. twenty eight students take

    asked by Audrey
  257. math

    6.the difference of 8 and 5 is? 7.the expanded from of 654 is 600+50+____

    asked by jojo
  258. biology

    Which of the following problems do immigration and emigration pose for demographers?

    asked by christy
  259. English grade 5

    what do you think is some good ideas for a journal as an artisan, a knight, a farmer, a mother with small children, a feudal lord, or a merchant.

    asked by Bobby
  260. science

    how can my son a 5th grader be able to design an expermient with a lab report that theaches others how to use a balance correctly

    asked by Alexa
  261. Physics: Data Analysis - Power Law

    In an experiment, two variables quantities 'x' and 'y' were measure. The relation between x and y is thought to be y=ax^(1/2) x(m)+/- 0.01m 0.10 0.20 0.40 0.80 1.00 y(s) +/- 0.05s 0.64 0.90 1.27 1.80 1.90 a) What will you graph in the y- and x- axis in

    asked by Shaila
  262. government

    Without the _____ to implement them, the decisions of Congress would have no meaning

    asked by Amber
  263. math

    If a failure rate is 0.15 what is the probability of 5 failures in a row?

    asked by Jerrry
  264. Physics

    I have a quick question, If a ballplayer catches a ball 3.0s after throwing it vertically upward. With what speed did he throw it, and what height did it reach?

    asked by Jenna
  265. geometryy

    the intersection of two distinct planes can be a _ or a _?

    asked by cassie
  266. biology

    A solution of the enzyme amylase was added to a solution of starch and kept at 25C. The starch was broken down by hydrolysis. Explain how you would determine the rate of hydrolysis.

    asked by Arina Aliah
  267. computers

    · Write a 200- to 350-word paper that describes the distinctions of data and information and briefly explains the process a computer uses to convert data into information. o Consider the following: Computers use a completely different language than

    asked by Tracy
  268. math

    Use the limit definition of the derivative to find f′(x) if 1. f(x) = x^2 + 3x 2. f(x) = 1/x + 1 now what i am confuse with is that there is no value given for x. So how is one suppose to do these problems. please show steps and this is just the 3rd

    asked by catherine
  269. 4th grade

    what does greatest place mean

    asked by Anonymous
  270. English

    How did Arthur Miller use the witch trials to represent the McCarthy witch hunt?

    asked by Alexis