Questions Asked on
October 15, 2012

  1. Math

    The number N of bacteria in a refrigerated food is given by N(T) = 10T2 − 20T + 700, 1 ¡Ü T ¡Ü 20where T is the temperature of the food in degrees Celsius. When the food is removed from refrigeration, the temperature of the food is given by T(t) = 5t

    asked by Kristi
  2. Social Studies 9

    i did my chart and i have filled almost everything but 3 questions. Please help me on these 3 questions. 1. What is the role of law for a republic? 2. What is the role of law for an absolute monarchy? 3. What is the role of law for constititional monarchy?

    asked by Sarahh
  3. Chemistry

    Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in human. The value of deltaHcombustion for dimethylphthalate (C10H10O4) is 4685 kJ/mol. Assume 1.035 g of dimethylphthalate is combusted in a calorimeter

    asked by Amanda
  4. Calculus 251

    The slope of the tangent line to the curve y= 3x^3 at the point (-1,-3) is:? The equation of this tangent line can be written in the form y=mx+b where m is:? and where b is:?

    asked by J
  5. Chemistry 101

    75.0 G tartaric acid in 1 liter is what Molarity (moles/liter)? mw=150.087 g/mol

    asked by Renee
  6. chemistry ........................chemistry

    Sodium Na+ Intense yellow Barium Ba++ Green Calcium Ca++ Brick red Copper Cu+ or Cu++ Blue-green Strontium Sr++ ? Lithium Li+ ? Sodium and potassium mixture Na+&K :yellow light Observations using the cobalt glass filter Sodium & potassium mixture

    asked by Maria
  7. Chemistry 101

    25 ml tartaric solution is tritrated with 31 ml ammonium equation rearranged for normality of ammonium: starting with N1V1=N2V2 N1= V1= v2= final answer N2=

    asked by Renee
  8. physics

    An arrow is shot horizontally from a 50 m cliff with a velocity of 15 m/s. As the arrow travels in its parabolic path, its new height some time later, is 24 m. Calculate the instantaneous velocity of the moment it reaches is new height.

    asked by Daniel
  9. math

    I am thinking of a number. If I add 4 to it, square the result, divide that result by 20, and subtract 4, the infal result is 1. What is my number

    asked by Clayton
  10. Chemistry

    Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in human. The value of deltaHcombustion for dimethylphthalate (C10H10O4) is 4685 kJ/mol. Assume 1.035 g of dimethylphthalate is combusted in a calorimeter

    asked by Amanda
  11. physics

    How much heat is necessary to change 500g of ice at-10 celsius to water at 20 celsius?

    asked by erica
  12. computer science

    Write an Assembly program to determine the price of a car rental. The car being rented costs $45 per day and frequent renters get a $15 discount on the total bill. Get as input, the number of days rented and whether the user is part of the frequent renter

    asked by icysnow
  13. science

    i need an acrostic poem of the word eukaryotic

    asked by karina
  14. chemistry

    for depolarization of 1 mole of KMnO4, the moles of H2O2 required is_________

    asked by krishna
  15. Chemistry

    The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy

    asked by Amanda
  16. statistics

    random sample of n = 16 scores is selected from a normal distribution with a mean of μ = 50 and standard deviation of σ = 10. a. what is the probability that the sample mean will have a value between 45 and 55? b. what is the probability that the sample

    asked by angela
  17. chemistry ......chemistry

    what does Planck mean when he states that energy in quantized? Ans: plank's theory proposes that the energies absorbed or emitted by atoms are quantized ,which means that their values are restricted to certain quantities. is this O.K?

    asked by Maria
  18. Math

    Each equal side of an isosceles triangle is 3 1/2 inches longer than the base. The perimeter of the triangle is 2 feet. Find the length of its base.

    asked by Ray
  19. ENH275

    How does a story employ verisimilitude?

    asked by Jazmyne
  20. chemistry ............chemistry

    if you had to design a firework show for a Christmas celebration , what elements would you include in the fireworks ? why ? I knew u post answer for me , but i can't find it . May you answer for me? Thank you so much !!

    asked by Maria
  21. chemistry

    How much L and concentration of NaOH do i need to neutralize 500 L 22% HCL?

    asked by rebeka
  22. physics

    how to calculate the speed of sound at temp of -83F and 135F?

    asked by tiffany
  23. physics

    In the past, ships often carried small cannons that wer used when approaching shore in a dense fog to estimate the distance to the hidden land. How would this work?

    asked by tiffany
  24. physics

    what frequency of sound travels in air @20 degree C has a wavelength equal to 1.7m?

    asked by tiffany
  25. physics

    the frequency of middle C on a piano is 261.6hz. What is the wavelength of sound as it travels @room air and in water?

    asked by tiffany
  26. trig

    A plane is flying 12,000 feet horizontally from a tall, vertical cliff. The angle of elevation from the plane to the top of the cliff is 45degrees, while the angle of depression from the plane to a point on the cliff at elevation 8000 feet is 14degrees.

    asked by Mae
  27. Chemistry

    I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are

    asked by Lana
  28. Chemistry

    I am having such a hard time approaching this problem. It would be great if you can help me. 1.0 mole of CH4 react with 1.0 mole of O2 in a sealed container. (a) When the reaction is complete, what is the container? (b) How many moles of water are

    asked by Lana
  29. math

    5/6 of 3 find the product

    asked by Anonymous
  30. maths

    what is prime triplet?

    asked by chitla
  31. Chemistry

    The alcohol in gasohol burns according to the reaction C2H5OH(l) + 3O2(g) --> 2CO2(g) + 3H2O how many grams of water are produced when 3.0 moles of C2H5OH are burned in an excess of oxygen gas?

    asked by Lana
  32. s.s.

    who is pinochet

    asked by dev
  33. social study

    explian any three factor which lead to the incident known as bloody sunday

    asked by dev
  34. s.s.

    state the three demands of lenin's april theses?

    asked by dev
  35. s.s.

    what made pinochet unpopular in chile?

    asked by dev
  36. s.s.

    what is meant by "people as resorce" ?explain how is human resource diffrent from other resorces like land and physical capital?

    asked by dev
  37. s.s.

    explian the process of slavery abolition in france.

    asked by dev
  38. s.s.

    who was the leader of the jacobin club?state any four laws indroduced by him

    asked by dev
  39. s.s.

    "unemployment leads to wastage of man power resource" justifythe statement with suitable examples.

    asked by dev
  40. Science

    If Sam weights 114kg on earth what is his mass on the moon

    asked by Anonymous
  41. Science

    If Sam weigs 114kg on earth what is his mass on the moon

    asked by Saskia
  42. algebra

    Using the equation y=-2x-5 a. The slope of this line is b. The y intercept of this line is c. The x intercept of this line is

    asked by j.wallace
  43. Biology

    How does long term survival of a species depend on resources that may be limited from time to time?

    asked by Fahad
  44. Chemistry

    why is it important to add 1M HCl dropwise to the crucible?

    asked by SA
  45. chemistry

    A 2.622 g sample of almonds is ignited and used to melt ice in a can. a. If the almond sample melted 15.24g of ice what is the heat produced in Kcal grams of nuts? d.If the heat from the almond sample was used to heat 100mL of water at 0.0 degree

    asked by Anthony
  46. Science

    You have a stock solution of 3.5M glucose. You need a working solution of 0.5M glucose in a volume of 400ml. Explain how you make the solution. Also what is the concentration of the dilution solution?

    asked by Helper
  47. Calculus

    Let h(x) be a function which satisfies h'(4) = 3. If k(x) = h(x2), compute k'(2).

    asked by Anonymous
  48. math

    Ray Sugar's account Principal: $1,700 Rate: 9.5% compound Length of period: quarter Third quarter's interest: _________

    asked by terry pierce
  49. Calculus

    What is the derivative of R(x)=(√7)/(xˆ10)

    asked by Chelle
  50. algebra

    2st squared -s squared. S=4 t=8

    asked by Melissa
  51. Calculus

    What is the derivative (tˆ2)ˆ(1/3)+2(tˆ5)ˆ(1/2)

    asked by Chelle
  52. calculus

    differentiate: g(t)=tˆ3cos(t)

    asked by Chelle
  53. calculus

    Differentiate: f(x)=(secx)/[1+sec(x)]

    asked by Chelle
  54. Physics

    A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 50.0 m/s. The bat does Wnc = 65.0 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above

    asked by Ben
  55. Chemistry

    Balance MgCO3 > CO2 + MgO

    asked by Stacy
  56. Chemistry

    write the conjugate acid of this base. PO4^3-

    asked by Stacy
  57. dounoon

    (1) A sample of gas has a volume of 0.5 meter at 27 0degree and 1.5x10 Pa. What volume will this gas occupy if the temperature is raised to 117 0degree and the pressure lowered to 0.5x10 Pa.

    asked by casieve
  58. Algebra

    Give the domain of (f - g)(x) and (g of f)(x) where f(x)=3 -x and g(x) - ã(x)

    asked by Kristi
  59. Physics

    A 1600-kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 32 m/s. Going up a hill, the car's engine produces 54 hp more power to sustain the constant velocity than it

    asked by Sam
  60. Calculus

    Determine an equation of the tangent line to the curve of f (x) = 3e^4x − 3 at the point where the curve crosses the y-axis.

    asked by Anonymous
  61. math

    The scatter plot shows the study times and test scores for a number of students. How long did the person who scored 81 study? A. 50 minutes B. 81 minutes C. 16 minutes D. 100 minutes helppppppp!!!!!

    asked by jose
  62. Grammar, punctuation

    She experienced fever anorexia weakness and right-sided chest pain. I say the correct punctuation for this sentece is; She experienced fever, anorexia, weakness and right-sided chest pain.

    asked by Marie
  63. Calc

    deriv. y=x(sinx)(cosx)

    asked by C.S.
  64. Grammar, punctuation

    Social history revealed that he lives with his aunt and uncle does not smoke or chew tobacco and reported drinking to intoxication once a month. My answer is; Social history revealed that he lives with his aunt and uncle, does not smoke or chew tobacco and

    asked by Marie
  65. Calc

    deriv. h(t)=(tˆ4-1)ˆ3(tˆ3+1)ˆ4

    asked by C.S.
  66. math

    there are 28 students in a class 16 are girls what fraction are boys

    asked by arron
  67. Calculus 1

    differentiate f(x)=(sinˆ2x)/(cosx)

    asked by Adam
  68. Calculus 1

    differentiate f(x)=(1+sinˆ2x)ˆ6

    asked by Adam
  69. Calculus

    A pebble is dropped into a pond, causing ripples in the form of concentric circles. The radius r of the outer ripple is increasing at a constant rate of 2 feet per second. When the radius is 10 feet, at what rate is the total area A of the disturbed water

    asked by Anonymous
  70. Calculus

    Find an equation of the tangent line to the curve of f (x) = x^3 − 8, at the point where the curve crosses the x-axis.

    asked by Anonymous
  71. Calculus

    Let Q(x)= f(f(x)−g(x)). Find Q'(x).

    asked by Anonymous
  72. Algebra

    4ã(50x)+3ã(2x)+ã(72x) Combine. Assume that all variables represent nonnegative real numbers.

    asked by Becky
  73. Calculus

    Air is being pumped into a spherical balloon and the volume is increasing at the rate of 100 cubic cm per minute. How fast is the radius of the balloon increasing when the radius is 10 cm? (V=4/3 times pie times r^3)

    asked by Anonymous
  74. algebra2

    s-2/2-s-1/5=1/4

    asked by Anonymous
  75. aed 204

    sexual harassment among students

    asked by Anonymous
  76. Evolutionary Bio

    Is Amborella considered a magnoliid, monocot, or eudicot and why?

    asked by M
  77. Biology

    3) The following statements are generalizations about cell signaling events made by a student with a basic knowledge of biology (a little knowledge is a dangerous thing). Your professor has requested that you tutor this student. You note that in each case

    asked by melody
  78. Biology

    We looked at four different families of signal transduction cascades. Describe three general, common features that are, in some way, part of each of these cascades.

    asked by melody
  79. Biology

    Describe the process of gastrulation in the sea urchin – what molecular and cellular changes are needed to drive the movements that one observes?

    asked by melody
  80. Biology

    Compare and contrast fertilization in the mouse and the sea urchin – how they similar and how do they differ (and why?). Think about the structures, events and results. You might want to do this by breaking down the steps. Also address the key role of

    asked by melody
  81. Biology

    11) The recent Nobel Prize in Physiology or Medicine was awarded based on two sets of experiments. The first of these is described in the following abstract: An important problem in embryology is whether the differentiation of cells depends upon a stable

    asked by melody
  82. Calculus

    Find the dervatives: 1. f(x)=(3x+1)e^x^2 2. y = e^(sin x) ln(x) 3. f(x)=(x^(2)+x)^23 4. f(x)=sin(2x)/cosx 5. square root of x/(3x+1) 6. f(x)=sin^4(3x=1)-sin(3x+1) 7. x+y=cos(xy) The answers I got: 1. 6x^(2)e^(x^2)+2xe^(x^2)+3e^(x^2) 2. e^sinx/x +

    asked by Anonymous
  83. Evolutionary Bio

    How would you differentiate a monophyletic from a polyphyletic and paraphyletic? I know the definition but can someone provide me with an exmaple and an explanation for it so I can understand better? That would be greatly appreciated!

    asked by M
  84. grammar

    Cowardice die many times before their death but brave once

    asked by Anonymous
  85. Calculus

    Find the equation of the tangent line to the graph of the function f(x)= 2x^3−3x^2+4x+2 at x=2 I got y=16x-12 but I know it is wrong.

    asked by Anonymous
  86. geometry

    draw the triangle into a coordinate system of (-7) to 7. Designating cathetes and hypotenuse. a)A(1/1);B(3/1);C(1/6) b)D(-3/1);E(1/-2);F(1/1)

    asked by sabine
  87. Calculus

    Find dy/dx using implicit differentiation of xy + sin^2y=10350. Is it -y/(x+2siny)

    asked by Bill
  88. math

    what is 22 times 58. My answer is 1278 am i correct

    asked by americal
  89. Math Rational Functions

    What is the domain and range of 2x^2-18/x^2+3x-10

    asked by Enlia
  90. Math

    If I make a porch that is 60 feet in length, 50 feet wide and 4 inches deep, how do I calculate the area, perimeter, and surface area of the porch? Can I multiply feet and inches in the same equation?

    asked by Sonya
  91. algebra

    Which set represents a Pythagorean triple? 27, 38, 42 33, 44, 55 35, 38, 42 68, 72, 81 Which number completes the Pythagorean triple: 12, 16, ____? 18 20 22 24 A base ball diamond is square. The distance from home plate to first base is 90 feet. In feet,

    asked by geny
  92. MATH

    150% OF 16.00

    asked by booker
  93. Government

    Write a 1,000-word report on two different ways that you, as a young citizen, can become active in politics that would help promote causes that you believe in. You may choose a specific organization that is politically active. In the report, tell the goals

    asked by Rachel
  94. MATH

    WHAT PERCENTAGE OF $40 IS $8? 8/40 =5% Am I on right track?

    asked by booker
  95. english

    Roman was an orphan who had barely survived in a war camp.

    asked by Halleberry
  96. university physics

    Two forces act on a 4.00-kg object in a manner that the object has an acceleration 3.00 m/s2 in a direction 20.0° north of east. The first force is 15.00 N in a direction 10.0° west of north. What is the second force?

    asked by mike
  97. Physics

    A little red wagon with mass 7.0kg moves in a straight line on a frictionless horizontal surface. It has an initial speed of4.00 m/s and then is pushed 3.0m in the direction of the initial velocity by a force with a magnitude of 10.0 N a.) Use the

    asked by Frankie
  98. Physics

    A little red wagon with mass 7.0kg moves in a straight line on a frictionless horizontal surface. It has an initial speed of4.00 m/s and then is pushed 3.0m in the direction of the initial velocity by a force with a magnitude of 10.0 N a.) Use the

    asked by Frankie
  99. Chemistry

    The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy

    asked by Amanda
  100. Calculus

    f(theta)= 4sec(theta)+ 2tan(theta), 0 less than theta less than 2pi. find all critical numbers

    asked by Ashley
  101. Algebra

    The length of a rectangle is 5 less than twice the width. Find the dimensions if the perimeter is 110?

    asked by Chad
  102. accounting

    in order for companies to prepare and issue financial staements, their accounting equations (debit and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement.

    asked by mya
  103. government

    Despite their differences, the Founding Fathers all agreed that _____.

    asked by Anonymous
  104. geometry

    Yuki just bought a big screen TV set. The screen has a diagonal measure of 40 in. If the screen is 32 in. wide, how high is it?

    asked by Louise
  105. math

    how much oxygen is required to convert total so2 into so3 tell me the percentage ratio of so2:o2 the reaction is so2+1/2o2=so3

    asked by himanshu dave
  106. PreCalculus

    A piano tuner strikes a tuning fork for note A above middle C and sets in motion vibrations that can be modeled by the equation y = 0.001 sin 880 Pi(T). Find the amplitude and period for the function.

    asked by Anonymous
  107. Physics

    A skier is gliding along at 5.0{\rm m/s} on horizontal, frictionless snow. He suddenly starts down a 15{\rm ^{\circ}} incline. His speed at the bottom is 15{\rm m/s} .

    asked by Denika
  108. Physics

    A skier is gliding along at 5.0{\rm m/s} on horizontal, frictionless snow. He suddenly starts down a 15{\rm ^{\circ}} incline. His speed at the bottom is 15{\rm m/s} . What is the length of the incline? How long does it take him to reach the bottom?

    asked by Denika
  109. pharmacy

    Where would you find information on drug interactions in an older style drug monograph

    asked by Anonymous
  110. Physics

    After a day of testing race cars, you decide to take your own 1502.5 kg car onto the test track. While moving down the track at 11.4 m/s, you suddenly accelerate to 30.2 m/s in 19.2 s. What average net force have you applied to the car during that time?

    asked by Amelia
  111. earth

    The global-mean surface temperature of the earth is about 288 degrees Kelvin. Use the Stefan-Boltzman law to calculate the radiative flux corresponding to an object with this temperature. [hint: use σT4 with σ = 5.67x10-8 Wm-2K-4 ]

    asked by Samantha
  112. chem

    The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy

    asked by greg
  113. math

    Which of the following sets of Dewey Decimal call numbers is in the correct order? A. 010.1 ABR, 004.15 KWA, 100.01 PRO, 100.1 BLU B. 100.1 BLU, 010.1 ABR, 004.15 KWA, 100.01 PRO C. 100.01 PRO, 100.1 BLU, 010.1 ABR, 004.15 KWA D. 004.15 KWA, 010.1 ABR,

    asked by gerlaine
  114. Physics URGENT!!!

    A 4.02 kg steel ball strikes a massive wall at 11.8 m/s at an angle of 60.0° with the plane of the wall. It bounces off the wall with the same speed and angle, as shown in the figure below. If the ball is in contact with the wall for 0.174 s, what is the

    asked by Anonymous
  115. Physics URGENT!!!

    A 41.8 kg girl is standing on a 142. kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.40 m/s to the right relative to the

    asked by Anonymous
  116. Physics

    A surfer is catching a wave. Suppose she starts at the top of the wave with a speed of 1.3 m/s and moves down the wave until her speed increases to 8.0 m/s. The drop in her vertical height is 2.8 m. If her mass is 59 kg, how much work is done by the

    asked by Sam
  117. oceanography

    14C has a half-life of 5,730 years. If we start with 70 grams of 14C at time zero how many grams of 14C will be left after three half-lives?

    asked by teal
  118. Trig

    From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the oppisite side of the runway are 6 degrees and 13 degreess respectivel. The points and the tower are in the same vertical

    asked by Nikki
  119. chemistry

    2C6H6(l) + 15O2(g) --> 12CO2(g)+ 6H2O(g) how to calculate the ratio?

    asked by ev
  120. math

    Use properties of logarithms to expand each logarithmic expression as much as possible. Where possible evaluate logarithmic expsressions without using a calculator. logb x^7

    asked by Ashley
  121. Language Arts

    He fell like a leaf tossed down the wind, down, down, with one cry that overtook Daedalus far away. When he returned, and sought high and low for the poor boy, he saw nothing but the bird-like feathers afloat on the water, and he knew that Icarus was

    asked by Taylor
  122. AP Chemistry

    A balloon is filled to a volume of 2.0 102 mL at a temperature of 33.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 102 K. What is the final volume of the balloon?

    asked by Ashley
  123. U.S history

    okay i want to check and see if my answers are corrects before i submit my stuff. can someone help ? i think i know the answers but the questions are: 1. The cotton gin changed agriculture in the South by (1 point) A. simplifying the planting process. B.

    asked by day
  124. geometry

    Each side of a equilateral triangle measures 12 cm. Find the height, h of the triangle.

    asked by Louise
  125. Literature

    2. In The Call of the Wild, the bond between Buck and Thornton is best explained by observing that A. dog and man were like mirror opposites. [B. dog and man were both in touch with their primordial nature.] C. Buck had helped Thornton pay off his debts.

    asked by jake
  126. English

    Identify the world in bold type. Do you know someone who can fix a lamp? (A) demonstrative pronoun (B) indefinite pronoun (C) interogative pronoun (D) relative pronoun (E) not a pronoun

    asked by Anonymous
  127. MATH

    WALTER HAS A CAR PAYMENT OF 417.HOW MUCH WILL HIS CAR PAYMENTS TOTAL IN ONE YEAR?

    asked by ARIANNA
  128. accounting

    •In order for companies to prepare and issue financial statements, their accounting equations (debits and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement

    asked by mya
  129. English

    What is can find in the following sentence: You can find properties of science in a basic clock. A. Main verb B. Helping verb C. Both D. Neither I say it is C Both, is this right?

    asked by B
  130. accounting

    in order for companies to prepare and issue financial staements, their accounting equations (debit and credits) must be in balance at year end. Discuss how errors and misstatements may occur given this requirement.

    asked by mya
  131. english

    What is on batteries in the following sentence: These clocks often run on batteries. A. Main verb B. Helping verb C. Both D. Neither Is it D Thanks

    asked by B
  132. Newton's law

    7. A uniform flexible chain of length l, with weight per unit length lamba, passes over a small, frictionless, massless pulley. It is released from a rest position with a length of chain x hanging from one side and a length l-x from the other side. Find

    asked by Ringo
  133. Math

    if the interest rate on a home mortgage is 9%, then each month you pay 0.75% of the unpaid balance in interest. if the unpaid balance on one such loan is $60,000 at the beginning of a month, how much interest must be paid that month?

    asked by Rodney
  134. chemistry

    2) Toluene, C6H5CH3, is a liquid similar to benzene, C6H6. It is the starting material for other substances, including trinitrotoluene (TNT). Find the molality of toluene in a solution that contains 25.8 g of toluene and 135 g of benzene.

    asked by Mike
  135. Math

    Trish says that if 5/7 of her pencils are yellow, then 2/7 are not yellow. Is she correct. Explain

    asked by arianna
  136. Calculus

    y=sqrt(x)^1/x. Find dy/dx That is to the power of 1/x So to start this do I need to take Ln on both sides and then use a logarithm property? Ln(y)=lnx^1/2x?

    asked by Greg
  137. physics

    The 20-g centrifuge at NASA's Ames Research Center in Mountain View, California, is a horizontal, cylindrical tube 58 ft long and is represented in the figure below. Assume an astronaut in training sits in a seat at one end, facing the axis of rotation

    asked by Ania
  138. college chemistry

    Please be specific! Briefly explain whether each if the following procedural errors would result in a high, low, or an unchanged calculated mass of Ca2+ in the analyzed tablet. a)a student had difficulty decanting the supernatant solution from the test

    asked by anne
  139. social studies

    what will obama do for for jobs, education and gun control? i am writing an persuasave essay in 6th grade and i need a fact about what obama will do for jobs education and gun control please make sure the facts are correct and NOT made up!

    asked by rjr
  140. Algebra

    I'm not sure how to format this You are putting fence around a rectangular garden whose length is twice its width. What are the dimensions of the garden?

    asked by Simone
  141. Grammar

    The subject of the sentence is sometimes a prepositional phrase. True or False I say true as my answer

    asked by Marie
  142. Physics

    A motor boat heads west across a river as a current of 12 km/hr. The speedometer reads a constant of 26 km/hr. What is the resultant velocity of the boat as compared to its original path? And what is the degree?

    asked by Anna
  143. maths

    x3+6x2+18x+13=0

    asked by jenny
  144. COMPUTER SCIENCE JAVA

    Assignment problems: Write Java programs for each of the following. 1. Students in a university class are being organized into groups of three for an upcoming research project. To model this situation: a. Write a Student class that stores the name, email

    asked by AHMED
  145. Grammar

    A main ________ shows action and has a meaning on its own. A) adjective B) adverb C) noun D) pronoun E) verb I said A for my answer

    asked by Marie
  146. COMPUTER SCIENCE JAVA

    Assignment problems: Write Java programs for each of the following. 1. Students in a university class are being organized into groups of three for an upcoming research project. To model this situation: a. Write a Student class that stores the name, email

    asked by AHMED
  147. English3

    That you over slept is a serious matter

    asked by Deondrea
  148. Physics

    A tennis ball is dropped from 1.80 m above the ground. It rebounds to a height of 1.00 m (assume down to be negative). (a) With what velocity does it hit the ground? (b) With what velocity does it leave the ground? (c) If the tennis ball were in contact

    asked by Confused
  149. Grammar

    A/an ________ has a different form depending on how it is used. A) adjective B) adverb C) noun D) pronoun E) verb I answered d

    asked by Marie
  150. Environmental Studies

    Buell (2004: 110) suggests that "people have entered a world in which the robust exercise of their power to modify nature has made their past actions increasingly into their present fate-or, better, not just their present fate, but the fate of all life

    asked by Kjd
  151. Grammar

    A/an ________ is a sentence that is created by joining two independent clauses with a comma. A) comma splice B) fragment C) run-on I answered A

    asked by Marie
  152. Chemistry

    Balance the equation and write the reaction-quotient expression, Qc. U(s) + F2 (g) UF6 (g)

    asked by Andrea
  153. Grammar

    A simple __________ expresses one complete thought (one independent clause) with one subject and one predicate. A) clause B) phrase C) sentence I answered c, although I think it could be B also

    asked by Marie
  154. NATH

    WHAT FOUR LETTER BELONG IN ABCELK

    asked by MICHAEL
  155. math

    Chester builds and collects models of boats and planes. He has 22 models all together chester has 8 more planes than he has boats. How many of each kind of model does he have?

    asked by lesley
  156. chemistry

    Given the balanced equation for the decomposition of INO, and the rate of disappearance of INO, write the expressions for the rates of appearance of I2 and NO 2INO(g) ---> I2(g) + 2NO(g) Reactant: Product(I2): Product(NO): -∆[INO]/2∆t = ??/?? = ??/??

    asked by Brunette
  157. math

    Find the following landmarks for 12,16,23,15,16,19,18

    asked by joey
  158. physics URGENT! PLEASE

    Figure the resultant velocity of a plane that is traveling at 300 km/hr @ 190 degrees when he encounters the wind below a) 30 km/hr tailwind b) 40 km/hr headwind c) 50 km/hr wind blowing south

    asked by Anna
  159. chemistry

    Please be specific! Briefly explain whether each if the following procedural errors would result in a high, low, or an unchanged calculated mass of Ca2+ in the analyzed tablet. a)a student had difficulty decanting the supernatant solution from the test

    asked by claire
  160. Grammar

    A verb can be one word or a group of words. True or False I said false

    asked by Marie
  161. Math

    Mr Collins bowling league has 48 members. If the league splits into teams of 12 members each,how many equally sized teams will there be

    asked by Shion
  162. Grammar

    A noun can be either one word or a group of words. True or False I know this ones got to be false

    asked by Marie
  163. algebra

    what is subtitition

    asked by regine
  164. College Chemistry

    We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of NaOH(aq) to use per titration is 15mL. From this molarity and volume, the moles of NaOH can be calculated. Since the unknown acid

    asked by Alex
  165. Physics URGENT!!!

    Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at

    asked by Anonymous
  166. math

    a rectangular box measures 4 by 5 by 2 meters. what is the length of the longest pole that can fit into the box?

    asked by dan
  167. Grammar

    The verb with all its modifiers is the complete ________. A) predicate B) subject I answered Predicate

    asked by Marie
  168. Physics URGENT!!!

    Gayle runs at a speed of 9.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 20.0 m. After she has descended a vertical distance of 4.00 m, her brother, who is initially at rest, hops

    asked by Anonymous
  169. Grammar

    The object of the preposition is ________ a noun when we define a noun as a person or thing, a proper name, a pronoun, or a gerund. A) always B) never C) sometimes I answered Sometimes

    asked by Marie
  170. science

    changing the mass or volume of an object changes its density and ?

    asked by shon
  171. Chemistry

    A calorimetric determination of specific heat and enthalpy of solution was performed. How would each of the following procedural changes affect (higher than the correct value, lower than the correct value, or no change) the value of the specific heat of

    asked by Amy
  172. science

    if an object covers a large enough area of the water's surface, it can float on the water because of the________of water particles

    asked by shon
  173. math

    write 8,042,176 in words

    asked by Anonymous
  174. science

    what science word can be formed using these letters ECREFENINE?

    asked by Cheryl
  175. chemistry

    an ionic equation has 2H+(AQ)on the left side and H2(g) on the right. Are these species spectators? explain.

    asked by natasha
  176. 6th grade math Statistics and Graphs

    If I were to do a survey on how many students have pets in my class should I include the zero amount of kids that didn't have pets in my calcualtion?

    asked by Billy
  177. Math

    Five apples cost $4.90.how much does each apple cost

    asked by Shion
  178. Calculus

    a square is defined by the unit vectors i(vector) and j(vector). FInd the projections of i(vector) and j(vector) on each of the diagonals of the square.

    asked by Jennifer
  179. math URGENT!!

    a rectangular box measures 4 by 5 by 2 meters. what is the length of the longest pole that can fit into the box?

    asked by dan
  180. Grammar

    A/an ________ and a connector is the same thing. A) conjunction B) preposition I answere B

    asked by Marie
  181. English

    Which word is opposite of establish? acquit deem devastate discredit elusive generate idolize ingratitude keepsake mortal ovation petty plight repent reverie revocation scan strand strife ropple

    asked by Jerald
  182. math

    Someone said when you put together any groups, you can multiply. Explain why that is not correct.

    asked by Trishona
  183. physics

    A cyclist is coasting at a steady speed of 17m/s but enters a muddy stretch where the effective coefficient of friction is 0.60. What will be the speed upon emerging?

    asked by Anonymous
  184. Grammar

    The phrase or word introduced by the preposition is called the ________of the preposition. A) link B) object C) subject I answered B

    asked by Marie
  185. College Algebra

    The campus of a college has plans to construct a rectangular parking lot on land bordered on one side by a highway. There are 720 feet of fencing available to fence the other three sides. Let x represent the length of each of the two parallel sides of

    asked by Cameron
  186. Grammar

    A relative pronoun is a connector, and the most commonly used relative pronouns are “that,” “which,” “who,” “whom,” “whose,” “whoever,” and “whomever.” True or False I answerd True

    asked by Marie
  187. math

    meredith picked 4 times as many green apples as red apples. if she picked a total of 20 apples how many green apples did she pick?

    asked by kat
  188. algebra

    how do I solve 10x198=(10xM)-(10x2)

    asked by Dylan
  189. Grammar

    state of being ________ simply shows that something exists. A) adjective B) adverb C) noun D) pronoun E) verb I say it could be E

    asked by Marie
  190. Physics

    A farmhand pushes a 23kg bale of hay 4.0m across the floor of a barn. If she exerts a horizontal force of 91N on the hay, how much work has she done?

    asked by RoCu
  191. Grammar

    Grammatically speaking, a/an ________ is a group of 2 or more words that does not contain a subject or a verb. A) clause B) phrase C) sentence I answered b

    asked by Marie
  192. AP Calculus

    if i define the function f(x)= x^3-x^2-3x-1 and h(x) = f(x)/g(x), then evaluate the limit (3h(x)+f(x)-2g(x), assuming you know the following things about h(x): h is continuous everywhere except when x = -1 lim as x approaches infinity of h(x) = infinity

    asked by Anonymous
  193. physics

    A skier slides down a slope to the left at a constant speed.

    asked by nhan
  194. Grammar

    For a sentence to be complete, it must be a complete thought and have two parts. The second part it must have is a/n ________. A) predicate B) subject C) subject I answered with A

    asked by Marie
  195. Physics

    An elevator weighing 10 000N is supported by a steel cable. Determine the tension in the cable when the elevator is accelerated upward at 3.0 m/s2 A) 7.0kN B) 10.0 kN C)11.6 kN D) 13.1 KN E) 40.0 kN

    asked by mike
  196. math

    when enlargeing sn object, why does the area increase diffrently than the preminter?

    asked by anna
  197. Grammar

    If it tells you where something is in relation to something else, it is a/an ________. A) conjunction B) preposition I answered A

    asked by Marie
  198. Grammar

    An adjective can be either one word or a group of words. True or False

    asked by Marie
  199. math

    An observer of height h stands on an incline at a distance d from the base of a building of height T. the angle of elevation from the observer to the top of the building is theta and the incline makes an angle of alpha witht he horizontal. Express T, in

    asked by Annmarie
  200. Algebra - Math

    How do you solve 5y+4=5(y+3)-11 ? when i did it out i got 0y = 22 so no solution but i don't think it's right ?

    asked by Mimi tran
  201. Algebra

    Solve the following equation? (14)/(x+2) - (1) / (x-4) = 1

    asked by minh tran
  202. Algebra

    It takes matt 9 hrs longer to build a wall than it takes chris. Working together they can build the wall in 20hrs. how long would it take each working alone to build the wall?

    asked by sami sun
  203. Algebra

    he spreadsheet shows the length of 3 movies in each of 3 categories. Choose the formula that could be used in cell B2.   A B C D E 1 Type of Movie Movie 1 (min. long) Movie 2 (min. long) Movie 3 (min. long) Mean Length 2 Animated 72 63 84 73 3 Drama 92

    asked by Algebra
  204. college orgo

    calculate how to make 10 mL of 15:85 ethyl acetate:hexane solution from 2 mL of 5:95 ethyl acetate:hexane, using pure hexane and pure ethyl acetate.

    asked by sara
  205. Grammar

    The ________ is what the sentence is about. A) predicate B) subject C) sentence D) subject I answered Subject

    asked by Marie
  206. chemistry

    Nitric oxide (NO) can be removed from gas-fired power-plant emissions by reaction with methane as follows: CH4(g) + 4NO(g) --> 2N2(g) + CO2(g) + 2H2O(g) Complete the equation relating the rates for each of the following: a) the rate of appearance of N2 to

    asked by Brun
  207. chemistry

    Posted by Brunette on Sunday, October 14, 2012 at 10:42pm. Values of the rate constant for the decomposition of N2O5 at four different temperatures are as follows: T(K) k(s^-1) 658....2.14*10^5 673....3.23*10^5 688....4.81*10^5 703....7.03*10^5 The

    asked by Brun
  208. Physics URGENT!!!

    Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at

    asked by Anonymous
  209. grammar

    If it tells you more about a noun, it’s a/an ________. A) adjective B) adverb C) noun D) pronoun E) verb I answered d

    asked by Marie
  210. Chem II

    A sample of gas at 38 degrees Celsius occupies a volume of 2.97 L and exerts a pressure of 3.14 atm. The gas is heated to 118 degrees Celsius and the volume decreased to 1.04 L. Determine the new pressure exerted by the gas.

    asked by Layn
  211. US History

    How would the French and Indian War first unite the colonists and then lead them to resent the British?

    asked by Darcy
  212. Chem II

    What mass of oxygen gas exerts a pressure of 475 mm Hg in a volume of 1.25 L at a temperature of -22 degrees Celsius.

    asked by Layn
  213. elementary

    Draw an array. Then write a fact family to describe your array

    asked by josh
  214. biology, test tom!

    how is plants doing sesxual and asexual an adaptation?

    asked by rebekah
  215. math

    Suppose a certain economy's consumption function is as follows, where C(x) and x are measured in billions of dollars. C(x) = 0.76x1.1 + 18.19 Find the marginal propensity to consume (dC/dx) when x = 7. (Round your answer to three decimal places.)

    asked by beauty
  216. grammar

    A compound ________ is 2 or more simple sentences/complete thoughts (independent clauses) connected by a comma and a conjunction (e.g., and, or, but) or by a semicolon and no conjunction. A) clause B) phrase C) sentence I answered c

    asked by Marie
  217. chemistry

    The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or

    asked by Brun
  218. marketing

    explain how the e-business's online service fits within the e-marketing mix

    asked by David
  219. Physics- Elena please help!

    In a Broadway performance an 80.0 kg actor swings from a 2.05 m long cable that is horizontal when he starts. At the bottom of his arc he picks up his 47.0 kg costar in an inelastic collision. (a) What is the velocity of the swinging actor just before

    asked by Anonymous
  220. Chemistry

    How many milliliters of 7.00M HCl solution are needed to obtain 0.200mol of HCl?

    asked by Chris
  221. social studies

    Are all aztecs able to wear feather headdress or just royalty and rich people?

    asked by Slippy
  222. Chemistry

    How many moles of KBr are present in 120mL of a 0.290M solution?

    asked by Chris
  223. math

    506 divided by 23

    asked by cupcake
  224. chemistry

    Why do halogens tend to form diatomic molecules?

    asked by Tes
  225. Physics

    In a Physics laboratory class, an object of mass 2.1 kg, attached by massless strings to two hanging masses, m1= 1.0 kg and m2= 4.0 kg, is free to slide on the surface of the table. the coefficient of kinetic friction between m2 and the table is 0.30.

    asked by Ashley
  226. physics

    Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices.

    asked by lib
  227. chemistry

    4) An aqueous solution is 1.65 m glucose. What are the boiling point and freezing point of this solution?

    asked by Mike
  228. physics

    Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices.

    asked by lib
  229. physics

    Your physical therapist throws a baseball to you at a certain speed and you catch it. To increase the difficulty, the therapist is going to throw you a medicine ball whose mass is ten times the mass of the baseball. You are given the following choices.

    asked by lib
  230. Math 8R - HELP!

    Simplifying Algebraic Expression Using the Distributive Property & Combining Like Terms Solve: 4 (g +7) = 64 4g + 4(4) = 64 4g + 16 = 64 I'm getting a bit confused and struggling a lot in this problem. Please help me!

    asked by Laruen
  231. Math 8R - HELP! (homework qs. check)

    Simplifying Algebraic Expression Using the Distributive Property & Combining Like Terms Simplify: -3 (2+3x) + x - 5 -3(2) + -3 (3x) + x - 5 Answer - 6 + -3(3x) + x - 5 Is the answer is correct??? I'm getting a bit confused and struggling a lot in this

    asked by Laruen
  232. Physics

    Florence who weighs 120lb stands on a bathroom scale in an elevator. What will she see the scale read when the elevator is accelerating upward at 4.0 m/s^2 a) 120lb b) 135lb 3) 105lb d) 90lb

    asked by Joey
  233. Test

    Tomorrow the whole state is going to take this assessment and I'm stressing out. There is this website that I am practicing on right now and most of the math questions I don't even know. I don't know what to do and I'm worried that I'll fail the math

    asked by Joy
  234. Physics

    Consider two vectors F~ 1 with magnitude 44 N inclined at 163 ◦ and F~ 2 with magnitude 72 N inclined at 236 ◦ , measured from the positive x axis with counterclockwise positive. What is the magnitude of the resultant vector F~ 1 + F~ 2 ? Draw the

    asked by Diego
  235. Math

    Change 300 mm3(cubed) to cm3(cubed). I have no idea how to work this out. Any help you can give me would be greatly appreciated!! Thanks

    asked by Hannah
  236. Grammar

    Sam confidently placed th oars in their locks and started to pull, but we didn't move. Do I need a comma after but in th above sentence?

    asked by Dakota
  237. business

    how long would it take to pay off 105,000.00 at 200.00

    asked by Anonymous
  238. algebra

    Bad boy is fleeing the scene of a crime at 75 mph. Half an hr. later the police chase after him following his same route-traveling at 90 mph. Bad boy thought he got away... but he didn't... How long had Bad boy been traveling when the police caught him?

    asked by Eliza
  239. Math

    One fourth of class takes French. One half takes Latin One third as many take Japanese as Latin students. There are 8 students taking Japanese. ***no students take more than one language How many students take French?12 How many students take Latin? 24

    asked by Meagieting
  240. Can you help me make my thesis sound clear & good

    In the short story, "how much land does a man need," the author Leo Tolstoy would describe that human worth based on shallow measurements such as wealth and possessions make true love and humanity impossible because of greediness, the devil filling our

    asked by Erin
  241. Math

    A school planned to buy x calculators for a total cost of Ksh 16200. The supplier agreed to offer a discount of Ksh 60 per calculator. The school was the able to get three extra calculators for the same amount of money. (a) Write an expression in terms of

    asked by Anonymous
  242. algebra

    A stone dropped from rest travels 160 ft the first 3 seconds. How far will it have fallen at the end of 5 seconds?

    asked by tracey
  243. chemistry

    What is the bonding continuum?

    asked by Tes
  244. PHYSICS

    At an amusement park, a swimmer uses a water slide to enter the main pool. The swimmer slides without friction, and descends through a vertical height of 2.98m. Find the swimmer's speed at the bottom of the slide if she starts with an initial speed of

    asked by RoCu
  245. calculus

    if i define the function f(x)= x^3-x^2-3x-1 and h(x) = f(x)/g(x), then evaluate the limit (3h(x)+f(x)-2g(x), assuming you know the following things about h(x): h is continuous everywhere except when x = -1 lim as x approaches infinity of h(x) = infinity

    asked by Anonymous
  246. PHYSICS

    A 0.26kg- rock is thrown vertically upward from the top of a cliff that is 32m high. When it hits the ground at the base of the cliff, the rock has a speed of 29m/s. 1) Assuming that air resistance can be ignored, find the initial speed of the rock ? m/s

    asked by RoCu
  247. Statistics

    Over a period of about nine months, 1,353 women reported the timing of each of their menstrual cycles. For the first cycle reported by each woman, the mean cycle time was 28.86 days, and the standard deviation of the 1,353 times was 4.24 days. (a)

    asked by Sseemee
  248. Math( < > )

    Find clues to the mystery number , the number is less than 800 but greater than 780 , it has 8 more 10's than 1's _________.

    asked by Blaine
  249. math

    Julie has a mystery number. When she divides the mystery number by 5, the remainder is 1 When she divides the mystery number by 6 the remainder is 4 When she didvides the mystery number by 7 the remainder is 6 What is the smallest number that could be

    asked by stephanie
  250. math

    i am a 3-digit number divisible by 3. my tens digit is 3 times as great as my hundreds digit, and the sum of my digits is 15. if you reverse my digits, i am divisible by 6 as well as 3

    asked by bob
  251. physics

    what is a satellite's altitude above the surface of the earth if earth's mass is 5.98*10^24 kg and its radius is 6380 km?

    asked by chris
  252. chemistry

    Which solvent is more preferential? Solubility of a substance: water- 2.0g/100ml or ether- 6.3g/100ml

    asked by geen
  253. Chemistry

    Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 3.60 MJ of energy (in the form of heat) if the temperature of the sodium is not to increased by more than 10.0 °C? Use CP = 30.8

    asked by Garcia
  254. math

    jill bought 32 orange and apple slices. There were three times as many orange slices as there were apple slices. how many of each did she have

    asked by lisa
  255. Science 8R - Homework Qs. Check

    If an object has mass of 70.5g and a volume of 64 cm(3), what is its Density? Will it sink or float and why? Answer - The Density of this object is 4512g/cm(3). It will sink because the amount of grams is a lot. Is the answer correct and good???? I

    asked by Laruen
  256. physics ..PLEASE HELP ASSIGN DUE SOON :(

    A charge is to be placed at the empty corner to make the net force at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner if the three charges have the same charge of +7.63 μC?

    asked by joane
  257. physics

    A box of books weighing 324 N is shoved across the floor by a force of 527 N exerted downward at an angle of 35 below the hori- zontal. The acceleration of gravity is 9.81 m/s2 . If μk between the box and the floor is 0.59, how long does it take to move

    asked by Tanya
  258. Physics

    if you were on a 22.7 degree slope and an avalanche started 425 m up the slope, how much time would you have to get out of the way, there is no friction.

    asked by Tanya
  259. Math

    Janet drove 304 Kilometers and the trip took 4hours. How fast was Janet traveling?

    asked by Kay
  260. PHYSICS

    A skateboarder starts at point A in the figure(Figure 1) and rises to a height of 2.64 m above the top of the ramp at point B. What was the skateboarder's initial speed at point A?

    asked by RoCu
  261. statistics

    If total items is 7500 and 300 are tested what's percentage that 25 are bad?

    asked by Anonymous
  262. Math

    A baseball diamond is a square with sides 22.4m. The pitchers mound is 16.8m from home plate on the line joining home plate and second base. How far is the pitchers mound from first base? Step by step please.

    asked by Nikki
  263. Physics

    7. A stock person at the local grocery store has the job of 1) picking up boxes of tomatoes from the stockroom floor, 2) accelerating to a comfortable speed, 3) Carrying the boxes to the tomato display at constant speed, 4) decelerating to a stop, and 5)

    asked by BO
  264. semicolons

    Mary Vaux Walcott is known as "the Audubon of North American wildflowers," for she painted more than seven hundred species.

    asked by Anonymous
  265. Math

    As a realtor, you earn 7% of the sale price. The owners have the house listed for $150,000 and will entertain offers within 10% of the list price. Write an equality that models the commission you could make on this sale.

    asked by Rachel
  266. physics

    3. A satellite of mass 500 kg orbits the Earth with a period of 6000 s. The Earth has a mass of 5.98 x 1024 kg. (a) Calculate the magnitude of the Earth's gravitational force on the satellite. (b) Determine the altitude of the satellite above the Earth's

    asked by BO
  267. Physics

    A golf ball of mass 30.0 grams is struck by a 4.00 kg golf club for a time of 3.00 ms. If the golf ball obtains a velocity of 25.0 m/s after being struck then with what force did the club strike the golf ball? a. 2.50 N b. 7.50 N c. 250 N d. 750 N e. 25.0

    asked by Tiffany
  268. literature

    What are the major events in Act I of A Doll's House?

    asked by ellen
  269. science

    i need to create a specimen for a diorama using vascular or non-vascular plant don't know how to begin

    asked by djorge
  270. Physics

    A 1800-kg car experiences a combined force of air resistance and friction that has the same magnitude whether the car goes up or down a hill at 28 m/s. Going up a hill, the car's engine produces 52 hp more power to sustain the constant velocity than it

    asked by Darren
  271. Physics

    A 0.40kg block is held against a compressed spring of stiffness 68.2N/m and compression 0.64m parallel to a 24 degree incline that is 1.27m long.  The coefficient of kinetic friction between the block and the incline is 0.34.  The external force holding

    asked by Alphonse
  272. College Algebra

    A piling supporting a bridge sits so that 1/4 of the piling is in the sand, 150 feet is in the water, and 3/5 of the piling is in the air. What is the total height of the piling?

    asked by Rachel
  273. Math Rational Functions-Please Clarify =)

    I have a question about the rational function I recently posted. Would the range still be (-∞,2)U(2,∞) if the rational function is what Reiny posted "(2x^2-18)/(x^2+3x-10)." The y-intercept confuses me because its (0,1.8) and when I look at the line it

    asked by Enlia
  274. Chemistry

    Given N2(g) + 3H2 = 2NH3(g), which scenario will allow you to eventually reach an equillibrium mixture involving these chemicals? A. Place only H2 into a sealed vessel. B.Place only NH3 into a sealed vessel. C.Place only N2 into a sealed vessel. D.All of

    asked by kina
  275. physics

    Standing on a balcony, you throuw your keys to a friend on the ground below. 1.2 seconds after releasing the keys, they have an instantaneous velocity of 14.8 m/s directed 53 degrees below horizontal. What initial velocity did you give them?

    asked by Anthony Grottini
  276. College algebra

    What is the domain for X³+2X²-9X-18

    asked by MEghan
  277. physics

    an arrow leaves a bow at 15 m/s at an angle of 45 degrees above the horizontal . how long before the arrow returns to the level it was launched from?

    asked by maryum
  278. Math

    Show his to make one addend a ten. Complete the new addition sentence. 15+37=? ---- + ---- =

    asked by Ni
  279. math

    y=(w-5)270 for w

    asked by matt
  280. Physics

    How far apart are a proton and electron if they experience an electric force of 5.10N?

    asked by joane
  281. math

    Suppose a certain economy's consumption function is as follows, where C(x) and x are measured in billions of dollars. C(x) = 0.76x^1.1 + 18.19 Find the marginal propensity to consume (dC/dx) when x = 7. (Round your answer to three decimal places.)

    asked by tee
  282. algebra 1

    A passenger plane and a jet leave att the same time from the same airport,traveling in opposite directions. The jet travels at twice the speed of the passenger plane. they are 2400 mi apart in 4 hours. Find the speed of the passenger plane and jet.

    asked by Victoria
  283. math

    A water trough is 4 m long and its cross-section is an isosceles trapezoid which is 210 cm wide at the bottom and 280 cm wide at the top, and the height is 70 cm. The trough is not full. Give an expression for V, the volume of water in the trough in cm^3,

    asked by j
  284. chemistry

    The reaction Cl(g)+ O3(g) --> ClO(g)+ O2(g) is the first-order in both reactants. Determine the pseudo-first-order and second-order rate constants for the reaction from the data in the table below if the initial ozone concentration was ..0000000000825 M or

    asked by Brun
  285. Math

    1/2 of class takes Spanish and 1/4 takes Chinese. 1/3 as many take French as Spanish. 8 takes French. No students takes more than one Language. How many takes Spanish? How many students take Chinese and how many students are in the class? Is this correct?

    asked by Patch
  286. geometry

    solve for x if angle 1 and angle 2 are supplementary: angle 1= 5x+6 angle 2= 3x

    asked by gman23
  287. algebra

    james collects 15 rocks. six of the rocks are smooth. the,rest of the rocks.r are rough. which equation can be used to find how many rocks are rough?

    asked by stephie
  288. Math

    How many 2/3 are in 3/4?

    asked by Tyler
  289. physics

    A man claims he can safely hold on to a 11.90 kg child in a head-on collision with a relative speed of 117. mi/h lasting for 0.140 s as long as he has his seat belt on. (a) Find the magnitude of the average force needed to hold onto the child.

    asked by lib
  290. Math

    Show how to make one addend a ten. Complete the new addition sentence. 22+49= ? ---- + ---- =

    asked by Ni
  291. statistics

    3. Consider selecting a starting line up for an intermural 6-on-6 indoor soccer team where you are required to have 4 students and 2 faculty on the court at all times. As everyone on your team have equal skills, you decide to randomly assign members to

    asked by ami
  292. Box and whisker plot math

    How do I read a box-and-whisker plot ?? Please help with example if you can?? Thank you so much.

    asked by Billy
  293. physics

    If the pelican was traveling at the same speed but was only 2.3 m above the water, how far would the fi!@#$%^&ravel horizontally before hitting the water below? Answer in units of m

    asked by Anonymous
  294. calculus

    suppose f(x) is a function such that f(3)=5, f'(3)=0, and f''(3)=3. Is the point (3, 5) a relative maximum, minimum or inflection point?

    asked by Elizabeth
  295. Religion

    I need help interpreting this question, In Isaiah 38 how did Hezekiah feel when he found out he was going to die, some typical or expected things? thanks

    asked by Elisabeth
  296. Math

    Show how to make one addend a ten. Complete the new addition sentence. 38 + 25=? ---- + ---- =

    asked by Melissa
  297. Math Statistics

    I need to find the critical value of what I have here so far, and I am stuck can someone please help? Percent of children depressed: 4.3% 1250= n 4.3/100= s/1250 53.75= sample mean n=sample size After, mid 2010: Percent of children depressed: 5% 100= n

    asked by Anonymous
  298. Chemistry Lab

    Hydrogen gas was collected over water in a eudiometer at 26 degrees celcius when the atmospheric pressure was 756 mm Hg. What was the pressure of the H2 gas?

    asked by Heather
  299. Chemistry

    How many photons with a wavelength of 450 nm is required to have mass of 1.25 micrograms?

    asked by Michelle
  300. chemistry

    calculate the relativistic mass of 1.81x10^24 photons (3.00 mol) with wavelength of 450 nm.

    asked by matt
  301. physics

    a student stands on an elevator scale at rest on the 64th floor of a building. the scale reads 847 N. As the elevator moves up the scales increases to 923 N, then decreases back to 847 N. the acceleration of gravity is 9.8m/s^2. Answer in units of m/s^2

    asked by Emily
  302. Calculus

    What is the derivative of sin(3x+1)^4?

    asked by Bill
  303. Math

    A telephone is anchored to the ground by a long cable called a guy wire, at a point 5 meters from the base of the pole, the wire makes an angle of 72.5 degrees with the horizontal. What is the length of the guy wire? HELP ASAP! I forgot how to compute for

    asked by Sofia
  304. Chemistry

    Zinc dissolves in acid according to the balanced reaction: Zn(s) + 2H^+(aq) -> Zn^2+(aq) + H2(g) A sample of zinc is placed in the ice calorimeter. If 0.0657g of zinc causes a decrease of 0.109mL in the ice/water volume of the calorimeter, what is the

    asked by Kjd
  305. Subjects and Prepositions.

    What is the compound or simple subject and compound or simple predicate in each sentence? draw t the line between the complete subject and complete predicate in each sentence. 1. People of all ages and abilities love sports. 2. More than 2 million

    asked by Kimberly
  306. Math

    An 8 meters bamboo pole is leaning against a coconut tree. The foot of the pole is 3 meters from the base of the tree. What angle does the pole make with the tree if the pole reaches up to the top of the tree? HELP PLEASE!

    asked by Katy
  307. Chemistry

    Using data from the following reactions and applying Hess's law, calculate the heat change for the slow reaction of zinc with water (answer must be in kJ/mol Zn): Zn(s) + 2 H2O(l) ----> Zn^2+(aq) + 2 OH-(aq) + H2(g) (ΔHrxn = ?) H+(aq) + OH-(aq) ---->

    asked by Amanda
  308. English

    Change the verb into the tense indicated. I am here. (past perfect)

    asked by Emma
  309. Early Child Care

    When Curriculum planning for cognitive development among infants and toddlers, the environment should contain; A) the same solid color throughout B) an absence of decorations C) a pattern without contrast or bright color D) soft items such as pillows and

    asked by seema
  310. Algebra

    A school planned to buy x calculators for a total cost of Ksh 16200. The supplier agreed to offer a discount of Ksh 60 per calculator. The school was the able to get three extra calculators for the same amount of money. (a) Write an expression in terms of

    asked by Anonymous
  311. TRIG.

    From a point 50 feet in front of a church, the angles of elevation to the base of the steeple and the top of the steeple are 35° and 47° 20', respectively. Find the height of the steeple. I missed class this day and have no idea how to go about this

    asked by Daisy
  312. Math

    Evaluate the expression. 2 60÷(7+3)+3

    asked by Malik
  313. Physics HELP!!

    A student presses a book between his hands, as the drawing indicates. The forces that he exerts on the front and back cover are perpendicular to the book and are horizontal. The book weighs 29.7kg. The coefficient of static friction between his hands and

    asked by joane
  314. Physics

    wo very small spheres are initially neutral and separated by a distance of 2.73 m. Suppose that 2.60E+13 electrons are removed from one sphere and placed on the other. What is the magnitude of the electrostatic force that acts on each sphere?

    asked by Sarah
  315. Physics

    A 27.0kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 71.0N and is directed at an angle of 30.0deg above the horizontal. Determine the coefficient of kinetic friction.

    asked by Danielle
  316. Physics

    As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 28.2 %. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the

    asked by Danielle
  317. Physics

    The mass of a robot is 5489.0kg. This robot weighs 3646.0N more on planet A than it does on planet B. Both planets have the same radius of 1.33 x 107 m. What is the difference MA - MB in the masses of these planets?

    asked by LS
  318. Physics

    A 74.1 kg climber is using a rope to cross between two peaks of a mountain as shown in the figure below. He pauses to rest near the right peak. Assume that the right side rope and the left side rope make angles of 48.0° and 11.16° with respect to the

    asked by LS
  319. Math

    if ben ate 4 of 6 candies in a bag and phil ate 5 of 6 candies in his bag, how much did they eat altogether?

    asked by Anonymous
  320. Psychology

    What is biological influences?

    asked by Chi
  321. Chemistry

    Determine the Molecular weight of a compound that weighs 34g, is vaporized at 50 degrees C, at 1.05 atm, in a flask with a volume of 5.0 L

    asked by Anonymous
  322. Math

    I need to find the critical value of what I have here so far, and I am stuck can someone please help ASAP ? Percent of children depressed: 4.3% 1250= n 4.3/100= s/1250 53.75= sample mean n=sample size After, mid 2010: Percent of children depressed: 5% 100=

    asked by Misty
  323. Chemistry

    Determine the Molecular weight of a compound that weighs 34g, is vaporized at 50 degrees C, at 1.05 atm, in a flask with a volume of 5.0 L

    asked by Anonymous
  324. physics

    A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials’ boat pulls up next to the spy’s boat, both boats reach the edge of a 5.1 m waterfall. The spy’s speed is 17 m/s and the officials’

    asked by Anonymous
  325. Literature

    5. As we find with most songs, in poetry [A. there's no specific point of view.] B. each couplet must rhyme. C. sound and content have equal weight. D. meanings are hidden in imprecise words.

    asked by jake
  326. Psychology

    What is biological influences?

    asked by Chi
  327. Calculus

    Assuming that f and g are functions differentiable at a (though we do not know their formulas). Prove that f +g is differentiable at a using the definition of the derivative.

    asked by Marissa
  328. Early Child Care

    the ability to put an object or group of objects in a logical series based on a property of those objects is: A) seriation B) phonemic awareness C) classification D) attribution

    asked by anna
  329. Math

    What is the cube root of 192x to the 7th power?

    asked by Shaff
  330. math

    farmer jane has only pigs and chickens o her farm. she can't remembr how many of each she has but she does know she counted 110 legs and 35 heads. assuming that each animal is normalhow many of each animal does she have

    asked by Anonymous
  331. Physics- PLEASE HELP

    In a Broadway performance an 80.0 kg actor swings from a 2.05 m long cable that is horizontal when he starts. At the bottom of his arc he picks up his 47.0 kg costar in an inelastic collision. (a) What is the velocity of the swinging actor just before

    asked by Anonymous
  332. Physics URGENT!!!

    Ann, a 66.1 kg person throws a 0.0460 kg snowball forward with a ground speed of 31.7 m/s. Billy, with a mass of 60.5 kg, catches the snowball. Both people are on skates. Ann is initially moving forward with a speed of 2.29 m/s, and Billy is initially at

    asked by Anonymous
  333. graphs Math

    how could I redraw the graph so that the change in customers between the two months does not seem so great? Do I start from zero? Intervals by 5? Any other advice before I start?

    asked by Moby
  334. Literature

    13. Scan this line from Cowley's poem: "its hills bent low within my reach." How many feet does this line contain? A. 5 B. 7 C. 6 [D. 4]

    asked by jake
  335. algebra

    james collects 15 rocks. six of the rocks are smooth. the rest of the rocks,r are rough. which equation.can.be used to find how many rocks are rough? is it 15 equals 6+r or r=15+6 or 15=6-r or r=15divided by 6

    asked by stephie
  336. Math

    some kangaroos can cover 30 feet in a single jump. if a kangaroo could jump like that 150 times in a row, how farther would it need to go to cover a mile? (1 mile=5280 feet)

    asked by Malik