Questions Asked on
October 4, 2015

  1. Math

    Which of the following are necessary to describe a rotation of a figure on a coordinate plane ? A.the center of rotation B.the shape of the figure C.the number on of degrees of the rotation D.the direction of the rotation Is the answers A and C? thank you

    asked by LoveMuffin
  2. PHYSICS

    A car is traveling up a hill that is inclined at an angle θ above the horizontal. Determine the ratio of the magnitude of the normal force to the weight of the car when (a) θ = 15o and (b) θ = 32o.

    asked by Anonymous
  3. Math

    If one honeybee makes 1/12 teaspoon of honey during its lifetime. how many honey bees are needed to make 1/2 teaspoon of honey? 1/12*2/1= 2/12=1/6 ???

    asked by MVN
  4. Pre-Calculus

    The cup on the 9th hole of a golf course is located dead center in the middle of a circular green that is 70 ft in diameter. You ball is located 50 feet south, and 40 feet west of the cup. The ball follows a straight line path and exits the green at the

    asked by Anonymous
  5. math

    A heated piece of metal cools according to the function c(x) = (.5)x − 11, where x is measured in hours. A device is added that aids in cooling according to the function h(x) = −x − 3. What will be the temperature of the metal after five hours?

    asked by dalton
  6. Chemistry (Le Chatelier's Principal)

    Methanol has the formula CH3OH and can be produced by the reaction of carbon monoxide with hydrogen gas. CO + 2 H2  CH3OH + heat In an attempt to maximize the yield of methanol (amount of methanol produced), a chemist would try to shift the

    asked by Terry
  7. chemistry

    How many moles of H3O+ or OH- must you add per liter of HA solution to adjust its pH from 9.75 to 9.01? Assume a negligible volume change. ……….x 10………Moles of ……………………..h3O+ or OH- I got 4.6001 x 10-5 M of h3o+...but it was

    asked by patrick
  8. Chemistry

    Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water . Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know dissociate means to take apart so for example; NaCl would look like Na^+ + Cl^- And another one like: Fe2(SO4)3 would look

    asked by Christine
  9. chemistry

    The weak acid HQ has pKa of 4.89. 1)Calculate the [H3O+] of .035 M HQ. 2)Calculate the (OH-) of 0.500 M HQ ....Am I correct? a) pKa = 4.89 => - log(Ka) = 4.89 => Ka = antilog(- 4.89) = 10-4.89 = 1.29x10-5 1. Given concentration of HQ, C = 0.035 M

    asked by patrick
  10. Physics

    At time t1 = 2.00 s, the acceleration of a particle in counterclockwise circular motion is (5.00 m/s2)i hat + (6.00 m/s2)j. It moves at constant speed. At time t2 = 5.00 s, its acceleration is (6.00 m/s2)i hat + (−5.00 m/s2)j. What is the radius of the

    asked by Rach
  11. Math

    Find the value of an odd natural number x if LCM(x, 40)=1400

    asked by Exerice 1.1
  12. calculus

    If f(x) = 5ex cos x, find f '(x) and f ''(x).

    asked by jam
  13. physics

    A curved road is banked at an angle such that friction is not necessary for a car to stay on the road. a 2500 kg car is traveling at a speed of 25 ms and the road has a radius of curvature equal to 40 m. calculate the magnitude of force that the road

    asked by amelia
  14. chemistry

    The equations for the heats of the formation of copper (I) oxide,Cu2O and copper(II) oxide,CuO are: 2Cu(s) +1/2 O2(g) CuO(s); ∆Hof =-166.7kj/mol Cu(s) +1/2 O(g) CuO(s); ∆Hof= -155.2kj/mol The first and second ionisation energies of copper are 750 and

    asked by felix
  15. algebra

    A 28​-inch board is to be cut into three pieces so that the second piece is twicetwice as long as the first piece and the third piece is 44 times as long as the first piece. If x represents the length of the first​ piece, find the lengths of all three

    asked by Anonymous
  16. Physics

    A sports car skids to a stop, leaving skid marks 290 m long. If the coefficient of kinetic friction between tires and pavement is 0.80, how fast was the car going before the skid?

    asked by Luis
  17. Physics

    An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary? b) the elevator accelerates upward at 2 m/s2? c) the elevator rises with constant velocity 4 m/s? d) while rising, the elevator

    asked by John Scott
  18. math 6th grade

    At basketball practice, Kyla made 60 free throws. this was 80% of her attempts. how many free throws did Kyla attempt?

    asked by alyson
  19. trigonometry

    A line AB, 125 feet long, is measured along the sraight bank of a river. A point C is on the opposite bank. Angles ABC and BAC are found to be 65° 40' and 54° 30' respectively. How wide is the river?

    asked by shyiah
  20. math

    Types of bonds are divided into three categories: good risk, medium risk, and poor risk. Assume that of a total of 13,838 bonds, 7,035 are good risk, 1,388 are medium risk, and the rest are poor risk. One bond is chosen is chosen at random. what is the

    asked by Anonymous
  21. Chemistry

    Compare the rate of effusion of carbon dioxide with that if hydrogen chloride at the same temperature and pressure.

    asked by Cade
  22. Physics

    A plane can travel with a speed of 80 mi/hr with respect to the air. Determine the resultant velocity of the plane (magnitude only) if it encounters a: 10 mi/hr cross wind; 60 mi/hr cross wind; 10 mi/hr tailwind; 10 mi/hr headwind. I have no idea what

    asked by Oleg
  23. Chemistry

    2 NaIO3(aq) + 5 NaHSO3(aq) → 3 NaHSO4(aq) + 2 Na2SO4(aq) + H2O(ℓ) + I2(aq) What is the theoretical yield of I2 if you mixed 16.0 g of NaIO3 with 120 mL of 0.853 M NaHSO3?

    asked by Julian
  24. factors

    Lucy has 40 bean plants, 32 tomato plants, and 16 pepper plants. she wants to put the plant in rows with only one type of plant in each row. All rows will have the same number of plants. How many plants can Lucy put in each row

    asked by Anonymous
  25. physics sl

    A dead dog of mass 2.2 kg and an initial speed of 5.5 m.s-1 slides along a rough horizontal surface and stops after travelling 4.2 m. calculate the frictional force between the dog and the surface (Think of the work the friction has to do to stop the dog

    asked by samuel
  26. Combinations and Permutations

    A committee of 3 members is selected from a club made up of 10 junior members and 20 senior members. What is the expected number of juniors in the committee?

    asked by Charles
  27. Physics

    A plane head north with an airspeed of 420 km/h. However, relative to the ground, it travels in a direction 7.0 west of north. if the wind's direction is towards the southwest (45.0 south of west), what is the wind speed?

    asked by JHM
  28. chem

    a) Co(H2O)6^2 + 4 Cl^‐1 (aq) ⇄ CoCl4^‐2 (aq) + 6 H2O (l) Rewrite the net ionic equation above including the energy term where appropriate. The Delta H for this reaction is +50 kJ/mol. b) Silver chloride (AgCl) is a white solid. For the equilibrium

    asked by Victor
  29. Social Studies

    Who were the first Early American civilization to build stone pyramids? A)Maya B)Olmec C)Aztec D)Inca I think it's Maya :p

    asked by Shalee ^~^
  30. Physics

    A person 1.90 m tall walks on a horizontal icy surface. The coefficient of friction between the surface of the ice and the person's shoe sole is μ = 0.33 and the length of the person's legs are 1/2 of the person's height. Determine the maximum step length

    asked by Jacob
  31. Physics

    A galvanometer needle deflects full scale for 53.0A current. What current will give full-scale deflection if the magnetic field weakens to 0.860 of its original value?

    asked by gaopalelwe
  32. chemistry

    acetylsalicylic acid (aspirin) HC9H7O4 is the most widely used pain reliever and fever reducer. Find the PH of 0.040 M aqueous aspirin at body temperature (Ka at 37 C = 3.6 x 10-4) is this correct? initial concentration is 0.040 M. let change in

    asked by patrick
  33. Chemistry

    Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water . Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know dissociate means to take apart so for example; NaCl would look like Na^+ + Cl^- And another one like: Fe2(SO4)3 would look

    asked by Christine
  34. Biology

    Compare and contrast natural selection and artificial selection. All I can think of is that man controls what happens in artificial selection.

    asked by Anonymous
  35. physics

    I need help understanding these, please. Thanks! 1. A 2 kg body moves with constant velocity when a force of 10 N is applied. What is the coefficient of kinetic friction between the table and the body? (Would I use F=m*g for this??) 2. Which of the

    asked by Ellie
  36. chemsitry

    acetylsalicylic acid (aspirin) HC9H7O4 is the most widely used pain reliever and fever reducer. Find the PH of 0.040 M aqueous aspirin at body temperature (Ka at 37 C = 3.6 x 10-4) is this correct? initial concentration is 0.040 M. let change in

    asked by patrick
  37. sinking

    Find the periodic payments PMT necessary to accumulate the amount given in a sinking fund. HINT [See Example 2.] (Assume end-of-period deposits and compounding at the same intervals as deposits. Round your answer to the nearest cent.)

    asked by joe
  38. orgo lab

    when is it better to use recrystallization vs. sublimation techniques in lab? I know they both result a purer compound, but I am confused on when one technique is better than the other.

    asked by domo
  39. chemistry

    What is the conjugate acid for NH2- ? N3- NH2- NH4+ H+ I thought it was NH4+ but it was wrong. Isn't it suppose to be NH3+ but they don't have on this choices.

    asked by kris
  40. ap chemistry

    The weak acid HQ has pKa of 4.89. 1)Calculate the [H3O+] of .035 M HQ. 2)Calculate the (OH-) of 0.500 M HQ ....Am I correct? a) pKa = 4.89 => - log(Ka) = 4.89 => Ka = antilog(- 4.89) = 10-4.89 = 1.29x10-5 1. Given concentration of HQ, C = 0.035 M

    asked by patrick
  41. Pre-Algebra

    Ashley bought a dress at 30% off. The sale price was $59.50. What was the original price of the dress?

    asked by Coolkid101
  42. math

    Bacteria in a certain culture increase at a rate proportional to the number present. If the number doubles in one hour, how long does it take for the number to triple?

    asked by rama krishna
  43. Finance

    A business opportunity has presented itself to you and one of your classmates. Your opportunity is to enter the fast growing craft beer industry. Your projected sales in the first year is 8300 kegs. Your projected growth rate is 5 percent. Entering the

    asked by Jimmy
  44. Physics

    A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bottom of its path it is moving at a speed v = 2.4 m/s and the tension in the rope is T = 15.5 N. A peg is placed 4/5 of the way

    asked by Hannah
  45. Physics

    A quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 20 m/s. The ball is caught by the receiver 2.55 seconds later. Determine horizontal velocity, vertical initial velocity, the distance ball was thrown, and

    asked by JoseF3
  46. PHYSICS

    Three forces act on a moving object. One force has a magnitude of 81.2 N and is directed due north. Another has a magnitude of 47.9 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object

    asked by Anonymous
  47. Calculus

    Calculate the approximation. L4, f(x)=cos^2 x , [pi/6, pi/2]

    asked by Anonymous
  48. Science

    CaCo3 _____ CaO+CO 2 From this eqn caculate the amount of Carbon dioxide in grams liberated by heating 25g of calcium carbonate ?

    asked by Amaresh S Patil
  49. Calculus

    Finding critical numbers g(theta) = 16(theta) - 4tan(theta) I can only get the derivative of g to be g'(theta) = 16 - 4sec^2(theta). Am I supposed to move on to get sec^2(theta) = 4, then sec(theta) = 2?

    asked by Justin
  50. chemistry

    How many moles of H3O+ or OH- must you add per liter of HA solution to adjust its pH from 9.75 to 9.01? Assume a negligible volume change. ……….x 10………Moles of ……………………..h3O+ or OH- I got 4.6001 x 10-5 M of h3o+...but it was

    asked by patrick
  51. Distributed Management System

    what is the crow's foot ERD of this problem?

    asked by Karen
  52. Eligugu high school physical science

    A cannon with a mass of 10 tons fires a bullet horizontally with a mass of 50kg. The velocity of the bullet when it leaves the barrel of the cannon is 800 m / s. calculate the recoil velocity of the cannon.

    asked by Mandla
  53. PHYSICS

    Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 88 kg, and the mass of the woman is 58 kg. The woman pushes on the man with a force of 56 N due east. Determine the

    asked by Anonymous
  54. Chemistry

    Calculate the amount of heat (calories) needed to raise the temp of 10.0g of water from 10.0 c to 75.0 c ??

    asked by Anonymous
  55. Organic Chemistry

    Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment

    asked by Peter
  56. chemistry

    6.3E10 cm converted to ft would be

    asked by NEED HELP PLEASE
  57. chemistry

    6.3E10 Mm converted to mm would be? Round the following measurment to three significant figure: 0.90985 cm^2

    asked by HELP!
  58. Chemistry

    You place a piece of paper on a balance and find that its mass is 0.63 g. You add a lump of NaOH to the paper and get a mass of 22.21 g. You remember that you forgot to tare the balance before taking this measurement. You tare the balance, add another lump

    asked by Misaki
  59. Organic Chem 2

    Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment

    asked by Peter
  60. math

    Information:Juan plans to bulid a bookcase to store his paperback books DVDs and CDs he has lumber that he will use for the sides and back of the bookcase the bookcase will have 5 shelves in each shelf will be two and a half feet long Question: juan bought

    asked by help
  61. science

    Two converging lenses are separated by 50 cm, and have focal lengths of f1 = 20 cm and f2 = 10 cm, as illustrated in Figure 2. An object is placed on the left of Lens 1. The final image formed by the two lenses is located at 26.0 cm to the right of Lens 1.

    asked by Anonymous
  62. Social Studies

    which of the tive themes includes the human and physical features at a specific location

    asked by Jack
  63. Chemistry

    What is the balanced net ionic equation for the reaction between the permanganate ion and the ferrous ion in acid solution. What is the number of moles of ferrous ion that could be oxidized by 1.2×10^-2 moles of permanganate ion? Honestly don't understand

    asked by Minset
  64. Ochem

    Write the equation for the reaction that occurs when sodium carbonate is added to the mixture of the reaction and water (hint: a gas is evolved). This is for benzocaine experiment

    asked by Peter
  65. math

    Evaluate -x+4y when x=-4/5 and y=1/3. Write your answer as a fraction or mixed number in simplest form.

    asked by Anonymous
  66. algebra

    graph the function f(x)=ãx-2 graph the function leftmost point and three additional points

    asked by Pat
  67. STAT

    The Probability that a randomly selected commuter listens to audiobooks during their commute is 0.49. Suppose that a sample of 10 commuters is selected, what is the probability that at most 3 of them listen to audiobooks? Write only a number as your

    asked by Anonymous
  68. Algebra

    a). The length of the classroom is 30 ft. The length of the room on the scale drawing is 6 in. Is this correct? Explain why or why not. Michael has made a scale drawing of his classroom. The scale for his drawing is 0.5 in. : 3 ft. b). One of the student

    asked by Alyssa
  69. Statistics

    If 12 women are randomly selected, what is the probability that their mean head circumference is between 21.8 in and 22.8 in.? If this probability is high does it suggest that an order of 12 hats will very likely for each of 12 randomly selected women? Why

    asked by Kacey
  70. Science

    1. Which component of the technological system is achieved when an automobile airbag inflates? A. Input B. feedback C. process D. output I think the answer is D. Output. Possibly C. Process. Please help. It will be greatly appreciated. Thank you for your

    asked by BabyCakes101
  71. Chemistry

    Suppose you dilute 20.0 mL of a 0.130 M solution of Na2CO3 to exactly 100.0 mL. You then take exactly 15.0 mL of this diluted solution and add it to a 250-mL volumetric flask. After filling the volumetric flask to the mark with distilled water (indicating

    asked by Julian
  72. Physics

    A quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 20 m/s. The ball is caught by the receiver 2.55 seconds later. Determine horizontal velocity, vertical initial velocity, the distance ball was thrown, and

    asked by Jose Luis
  73. Biology

    Is the oval window soft or hard? Explain the advantage to your answer Personally I think it's soft and it's because being soft would it to be amplified to the ear hear things more clearly. Explain why a person with a sore throat may end up with a mild ear

    asked by Alex
  74. Chemisrty

    What volume of 0.740 M , HCl in milliliters, is required to titrate 2.05 g of Na2CO3 to the equivalence point?

    asked by Julian
  75. math

    7x-3y+4z=18 13x+6y+8z=30 11x-9y-12z=16 Find x,y,z please show the solution pleaseee

    asked by Jean
  76. PHYSICS

    The space probe Deep Space 1 was launched on October 24, 1998. Its mass was 474 kg. The goal of the mission was to test a new kind of engine called an ion propulsion drive. This engine generated only a weak thrust, but it could do so over long periods of

    asked by Anonymous
  77. English

    What is the archetype in By the Waters Of Babylon for The Quest to Know who you are, with an example from the book

    asked by John
  78. Math

    Find the product tell which strategy you for (4x10)x10

    asked by Emmya
  79. Physics

    A boy throws a ball straight up into the air so that it leaves his hand at 11 m/s. If the ball has mass 0.15 kg and the boy's arm moved through 1.5 m as he threw the ball, then what average force did he exert on the ball? I'm completely confused. I looked

    asked by John Scott
  80. Math

    - 2 1/4 cups all purpose flour - 1 teaspoon of backing soda - 1 teaspoon of salt - 1 cup (2 sticks) of butter softened - 3/4 cups of sugar - 3/4 cup of packed brown sugar -1 teaspoon of vanilla extract -2 large eggs -2 cups of chocolate chips -1 cup of

    asked by Brenda
  81. math

    Evaluate 2x+6y when x=-4/5 and y=1/3. Write your answer as a fraction or mixed number in simplest form.

    asked by Anonymous
  82. Physics

    A small plane aims to fly directly east at 120. km/h, but a headwind is blowing 50. km/h at 22 degrees south of west, slowing the plane down. Find the plane's actual ground speed and direction.

    asked by brooklyn
  83. Physics

    John has used a solar simulator setup to measure the relation between the voltage and the current of a small photovoltaic module (40 cm long and 40 cm wide). The measurement setup maintains the standard measurement conditions: the temperature is controlled

    asked by Prasad
  84. Chemistry

    If 75.0 g of metal at 75.0 c is added to 135 g of water at 15 c the temp of water rises to 18.3 c what is the specific heat of the metal..? Can someone please help me plug the #s into the specific heat formula I'm very confused as to were to plug these #s

    asked by Abby
  85. math

    He spent $48 on art supplies. The canvas for each of his paintings is an additional $2. He plans to sell his paintings for $10. Find the number of paintings (p) he will need to sell to break even.

    asked by brandon
  86. chemistry

    how many rb atoms could be placed on a square surface that is 1.0cm on a side? The diameter of a rb atom is 4.95

    asked by linda
  87. PHYSICS

    A 50.5-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.624 and 0.364, respectively. What horizontal pushing force is required to (a) just start the crate moving and (b) slide the crate across the

    asked by Anonymous
  88. Algebra

    A miniature rocket is launched so that its height in meters after t seconds is given by the equation h=-4.9t^2+29.4t+7. (a)draw a graph of the equation (b)how high is the rocket after 5 seconds? (c)what is the maximum height the rocket will attain? (d)how

    asked by Amy
  89. physics

    An athlete executing a long jump leaves the ground at a 28.9 ∘ angle and travels 7.70 m .What was the takeoff speed?If this speed were increased by just 4.0%, how much longer would the jump be?

    asked by alex
  90. Ecology & English

    I am writing my answer and my teacher wants me to give an example of parasitism and write a sentence explaining my answer. Is this a good answer also should I keep the semicolon or change it. Sentence: Wolves and deer; The deer are hunted and killed by the

    asked by Fairypenguingirl
  91. Pre-Calculus

    Venus orbits the sun in an approximately circular path. Venus is about 67 million miles from the sun. A comet is located 80 million miles north and 73 million miles west of the sun. The comet follows a straight-line path and exits Venus's orbit at the east

    asked by Anonymous
  92. Biology

    Evolution by artificial selection is a common way by which people breed plants and animals to have characteristics that we find desirable. Imagine that you are working in a lab where scientists are trying to breed a strain of apple that has much higher

    asked by Anonymous
  93. Algebra 1

    The manager of a band recommends that the band sell its CDs for $8.75. The band decides to sell the CD for p dollars. A) Write an absolute value expression that tells how far the bands price is from the recommended price. B) The band wants the price of its

    asked by Ellie
  94. Eligugu high school science

    5 kg of steel is immersed in water at 2 degrees Celsius. what mass of water is required if the final temperature is 40 degrees Celsius?

    asked by Mandla
  95. Algebra

    If the angles of triangle are in the ratio of4:1:1then find the ratio in the smallest side / perimeter of the tringle

    asked by Math
  96. Chemistry

    With relation to Avogadro's Constant: How many hydrogen ions are present in 3 moles of dilute sulphuric acid? As sulphuric acid is H2SO4, I'm not sure whether the answer is: 2 x 6 x 10(23) = 1.2 x 10(24) OR 6 x 6 x 10(23) = 3.6 x 10(24) Thank you!

    asked by Maria
  97. Grammar English

    How would you change this sentence- The infant was handed to the pediatrician, who then cried spontaneously.

    asked by Sharon
  98. chemistry

    The weak acid HQ has pKa of 4.89. Calculate the (OH-) of 0.500 M HQ This is what I have: pKa = 4.89 so Ka = 10^-4.89 = 1.29x10^-5 Ka = 1.29x10^-5 = [H+][Q-] / [HQ] 1.29x10^-5 = x^2 / 0.046 - x x^2 + 1.29x10^-5x - 5.93x10^-7 = 0 x = [H+] = 7.64x10^-4M pH =

    asked by patrick
  99. Algebra 2

    Evaluate 4-1.5 using a calculator. Round you’re answer to 3 decimal places

    asked by Sara
  100. algebra

    enum =5 four=2 three= 1 suppose the function f is defined, for real numbers, as(x) follows f{4if=0 1ifx=0 graph the function f

    asked by Pat
  101. math

    At a car rental agency, 0.34 of the cars are returned on time. A sample of 13 car rentals is studied. What is the probability that more than 3 of them are returned on time? Write only a number as your answer. Round to 2 decimal places ( for example: 0.24).

    asked by Anonymous
  102. physics

    A rock is dropped from a tree of height 22 m into a lake (depth 4.0 m) below. After entering the water, the rock floats gently down through the water at a constant speed of 1.4 m/s to the bottom of the lake. What is the total elapsed time?

    asked by julia
  103. PHYSICS

    A 103-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is μk = 0.555. (a) What is the magnitude of the frictional force? (b) If the player comes to rest after 1.05 s, what is his initial

    asked by Anonymous
  104. Chemistry

    How would you write the equation to represent "Nitrogen and Oxygen react to form Nitrogen Dioxide".

    asked by Elle
  105. Algebra

    A man flies between two cities; on a windless day, he averages 120 mph round trip; on a windy day he averaged 140 mph with the wind; he averaged 100 mph against the wind; on the windy day, it took 15 extra minutes to make the round trip; what is the

    asked by Linda
  106. math

    If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take both of them to paint the house together? > I know the answer, but I do not know what is the name of the methods. EX: 1/n= 1/4 + 1/6 1/n =5/12 n=

    asked by Mohammed
  107. Physics

    A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 660 m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.027 m below the center. What is the horizontal distance between the end

    asked by Hannah
  108. English help

    "We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light" what does this quote mean?

    asked by Hanna
  109. Physics

    A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.890 m/s at an angle of 36.0° above the table, and it lands on the magazine 0.0660 s after leaving the table. Ignore air resistance. How thick

    asked by Hannah
  110. Chemistry

    How many grams of iron at 200.0 c must be placed in 200.0 g of water at 18.0 c so that the temp of both will be 30.0 c ? Okay so the SH of iron = .106 This is what I have set up.. Not sure if I'm going at this the right way.. (.106) (m) (170.0) = (1.0)

    asked by John
  111. English assignment

    We have to write a one page reflection on honesty, I need help. What are some real world situations in which this value is being violated? What actions does your conscience call you to take to respond to real world situations in which this value is being

    asked by Bob
  112. AP Calculus AB

    Hello! I'm having trouble with this related rates problem: A 5ft tall person is walking away from a 16ft tall lamppost at a rate of (2/x) ft/sec, where x is the distance from the person to the lamppost. Assume the scenario can be modeled with right

    asked by Andy
  113. Math

    Evaluate the following limit algebraically. lim (sqrt 4+x-2)/x x approaches 0

    asked by Levi
  114. Econ

    Whenever an industry fails to achieve allocative efficiency by producing too little output, a shortage arises.

    asked by Anonymous
  115. Calculus

    We are finding critical numbers f(x)= 8x^3+x^2+8x f'(x)=24x^2+2x+8 -> 2(12x^2+x+4) I'm honestly stuck. All I can tell is that I need to set my f'(x)=0, but I am lost there too. Quadratic form. equates to (-1±i√191)/24 I believe. That is as far as I can

    asked by Justin
  116. Calculus

    We are finding critical numbers f(x)= 8x^3+x^2+8x f'(x)=24x^2+2x+8 -> 2(12x^2+x+4) I'm honestly stuck. All I can tell is that I need to set my f'(x)=0, but I am lost there too. Quadratic form. equates to (-1±i√191)/24 I believe. That is as far as I can

    asked by Justin
  117. Calculus

    We are finding critical numbers f(x)= 8x^3+x^2+8x f'(x)=24x^2+2x+8 -> 2(12x^2+x+4) I'm honestly stuck. All I can tell is that I need to set my f'(x)=0, but I am lost there too. Quadratic form. equates to (-1±i√191)/24 I believe. That is as far as I can

    asked by Justin
  118. math

    The energy-separation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n Derive and expression for the stiffness of the bond at the equilibrium spacing, in terms of A, B, m, n, and r0. S=dF/dr at r=r0:

    asked by ana
  119. Biology

    You place a piece of paper on a balance and find that its mass is 0.63 g. You add a lump of NaOH to the paper and get a mass of 22.21 g. You remember that you forgot to tare the balance before taking this measurement. You tare the balance, add another lump

    asked by Misaki
  120. physical

    Consider a compound microscope that has a minimum separation angle of 0.5 ¦Ìrad when it satisfies the ¡®just resolved¡¯ condition. When its objective lens with a circular aperture is immersed in oil whose refractive index is 1.53, determine the

    asked by Anonymous
  121. 4

    Bobby has 230 marbles to put in jars. He wants the jars to hold either 100 marbles or 10 marbles. Which is a way he can arrange the marbles?

    asked by ben
  122. Physics

    If you kick a football at 64.7 m/s at 49 degrees? a) How long is the ball in the air? b) Where does the ball land horizontally? c) What is the balls vertical acceleration at the top of its flight?

    asked by Ghazi
  123. physics

    a rocket launched off a cliff is represented by the equation h(t)= -16t^2+100t+140. when will this rocket reach 200 feet? I tried to factor it, i'm confused.

    asked by angel
  124. English

    How would you fix this sentence? The patient resides in a nursing home, which toppled over resulting in a broken hip.

    asked by Lyx
  125. English

    How would you fix this sentence? He passed about a cup of bright red blood per rectum, which brought him to the emergency room.

    asked by Lyx
  126. geometry

    The length of a rectangle is 4 times its width. If the perimeter of the rectangle is 70 ft., find the area.

    asked by Christine
  127. physics

    A 3000-kg truck needs a propeling steady force of 1400 N to travel at a speed of 40 mpg. What is the MPG for the truck if its engine efficiency is 27%? Heat released from one gallon=136,500,000 J and 1 m= 1609 m.

    asked by Penny
  128. Physics

    A stone is thrown up and returns to it's starting point 6 second later. Find the stone's initial speed.

    asked by Mike
  129. math221

    consider situations in your work or home that could be addressed through a continuous probability distribution. Describe the situation and the variables, and determine whether the variables are normally distributed or not. How could you change these to a

    asked by Faithee
  130. Pre-Calculus

    Not sure what to solve... I tried to solve it but i ended up proving that it worked. a. Find the equations of the tangents at C (-2,1) and D (1,2) on the circle x^2+y^2=5 b. Find the point of intersection of the tangents. ~What I did was find the slope and

    asked by Anonymous
  131. History

    The core periphery model is not limited to a global scale Explain What does that mean

    asked by Anonymous
  132. Chemistry

    The world’s electrical demand is typically 1.4 x 10^13 W. If all the H2O(g)in the atmosphere suddenly condensed to liquid, and all the enthalpy of this process was captured and converted to electrical energy, for how long would this energy power the

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  133. chemistry

    6.3E7 cm converted to mm would be 4.3cm converted to in would be

    asked by steph
  134. Math

    The lcm of two numbers is 40 one of the numbers is 5 what is the other numbers

    asked by Angaly
  135. Accounting 2

    Coldfoot Corp. estimates that its 20-1 income tax will be $74,000. Based on this estimate, it will make four quarterly payments of $18,500 each on April 15, June 15, September 15, and December 15.

    asked by Norman A George
  136. Calculus

    Differentiate. g(x) = 5e^x√x

    asked by Joey
  137. Chemistry

    I'm having trouble understanding hybrid atomic orbitals. Could you please explain? Thanks

    asked by Anonymous
  138. Math

    4x−y+2z=11 x+2y−z=−1 2x+2y−3z=−1 can someone help me find x,y,z, I have tried isolation but i cant seem to get it

    asked by Adam
  139. Quality Control

    How need help with this one. This is what I know P(X)

    asked by WIlbert
  140. psychology

    what are a type of order effect that occurs when participants’ performance decreases over time due to repeated testing

    asked by lionel
  141. math

    I need the order from least to greatest 4/9 5/6 1/2 2/3

    asked by talia
  142. zambia school

    500ml of gas at 20 degrees celcius is under a pressure of 100cm of mercury what would be its volume at s.t.p?

    asked by Natalia