Questions Asked on
March 13, 2015

  1. English-Please Help

    3. Based on the context clues, what is the meaning of the word catalpa in Line 27 of the poem? (The poem is Almost Summer Sky by Jacqueline Woodson) Line 27: No, upstate they got maple and catalpa and scotch pine, A a location upstate B a species of

    asked by BUBBLES
  2. English

    8. What can readers infer from the following quote from Act V, Scene 3 of Romeo and Juliet? Romeo: O, be gone! By heaven, I love thee better than myself; For I come hither arm’d against myself: Stay not, be gone;--live, and hereafter say, A madman’s

    asked by Kendra
  3. Science Help Please

    A weatherman reports, "The storm waves are about 2 meters high and about 25 meters apart." What properties of waves is the reporter describing? A. frequency and wavelength B. wavelength and wave speed C. amplitude and wavelength D. amplitude and frequency

    asked by frazzled
  4. English 9

    . Read the following line from Romeo’s monologue in Act II, Scene 2 of Romeo and Juliet, where Shakespeare employs personification: Arise, fair sun, and kill the envious moon, Who is already sick and pale with grief, That thou her maid art far more fair

    asked by Jana
  5. Check My Answers Math

    The time between a lightning flash and the following thunderclap may be used to estimate, in kilometers, how far away a storm is. How far away is a storm if 9 seconds elapse between the lightning and the thunderclap? Use the formula d= t/3 , where t is the

    asked by SmartyPants
  6. Pre ALGEBRA

    what are the next three terms in the sequence -6, 5, 16, 27? A)38,49,60 B)37,47,57 C)36,45,54 D)36,46,57 i think its a Am i right Somebody help me please DAMON,MS.SUE, SOMEBODY PLEASE HELP ME

    asked by Oscar
  7. Math

    What is 37.52 rounded to the nearest whole

    asked by Melodi
  8. Science

    Why is photosynthesis an example of a chemical reaction, and why is it classified as endothermic?

    asked by Zack
  9. Science Help

    Soundproof rooms take advantage of which property of waves? A. Absorption B. Regular reflection C. Refraction D. Diffuse reflection Is the answer C? Thank you for your help and time.

    asked by Anonymous
  10. Math

    What is the term for data that are grouped closely together? A. Outlier B. Linear C. Positive D. Clustering Is the answer C? Thank you for your help.

    asked by Anonymous
  11. Social Studies

    Which of the following is the staple crop of the north China plain A. Barley B. Rice C. Soybeans D. Wheat**** Crops grow well on the north China plain because the Huang river A. Forms a barrier to animals that eat crops B. Changes weather patterns in the

    asked by Help
  12. science

    14. the sun's layer is called the photosphere . ( 1point) A. true b. false 15. meteoroids can form when comets break apart , creating dust clouds . ( 1point ) A. true b. false 16. a star is born whenever a nebula expands . ( 1point ) A. true b. false 17. a

    asked by Help me,plz
  13. Math check my answer

    During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M = 176 – 0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended heart rate in beats

    asked by SmartyPants
  14. Math Check My Work Please

    Find the value of the variables in the table. x n 4 6 10 12 y 1 9 m 21 25 m = 13, n = 0 m = 11, n = 0* m = 15, n = 3 m = 13, n = 3 6. Write an expression to describe a rule for the sequence. Then find the 100th term in the sequence. 4, 9, 14, 19, 24, 29, .

    asked by SmartyPants
  15. Health

    3. The muscular system allows our bones to: A. Strenthen B. Contract C. Lenghthen D. Move***** 4. This muscle helps to transport blood to and from the heart: A. Smooth Muscle***** B. cardiac Muscle C. Skeletal Muscle D. Invoulntary Muscle 5. The blood

    asked by Anonymous
  16. Science Help Please

    1.A weatherman reports, “The storm waves are about 2 meters high and about 35 meters apart.” What properties of waves is the reporter describing? (1 point) A.frequency and wavelength B.wavelength and wave speed C.amplitude and wavelength ***

    asked by frazzled
  17. Physics

    A hollow spherical shell with mass 2.45kg rolls without slipping down a slope that makes an angle of 30.0∘ with the horizontal. a.) find the magnitude of the acceleration of the center of mass of the spherical shell. b.) find the magnitude of the

    asked by Rosae
  18. Social Studies

    Until the 1700s, the mayan calendar was much more accurate than any calendar used in... A. the United States B. Europe C. China D. the Middle East

    asked by Angel
  19. Stat

    A Bacteria has a doubling period of 8 days. If there are 2250 bacteria present now, how many will there be in 33 days? find the growth rate (Round this to 4 decimal places). Growth Rate___________. There will be _________ Bacteria.

    asked by Bobbie
  20. health. please help! #6

    6. It is the middle of winter and like everyone else you have caught a cold, your body relies on your ______ to help you boost your immune system. A. Plasma B. Red Blood Cells C. White Blood Cells D. Platelets

    asked by Anonymous
  21. LA

    In which of these lines is the meaning of the word resent best expressed? A. "Suppose you try kepping still for five minutes." B. "Anne, dear, don't be such a baby." C. "You know we're going to forget how to dance...When we get out we wont remember a

    asked by Anonymous
  22. Science

    Which of the following may have happened if the inner planets had greater masses during the formation of the solar system? A. The inner planets may have been even smaller and rockier. B. The inner planets may have been larger and more gaseous. C. The inner

    asked by Anonymous
  23. Stats - Please help me

    A Bacteria has a doubling period of 8 days. If there are 2250 bacteria present now, how many will there be in 33 days? find the growth rate (Round this to 4 decimal places). Growth Rate___________. There will be _________ Bacteria. I came up with:.0668 for

    asked by Bobbie
  24. Math Check My Work Please 2

    15. Lisa takes a loan of $10,500 at a 9% simple interest rate for 7 years. a. How much interest will she pay after 3 years? b. How much interest will she pay in total for the loan? $2,835.00; $6,615.00 $8,280.00; $9,720.00* $13,598.00; $19,194.00

    asked by SmartyPants
  25. Science Help Please

    Marie and Pierre noticed burns on their fingers after handling test tubes containing radioactive substances. This observation led to A. the discovery of natural fluorescence. B. the discovery of X-rays. C. the discovery of radiation therapy. D. the

    asked by frazzled
  26. Social Studies

    What effect did workers' low wages in China and Taiwan have on export sales? a. other countries did not want the low-priced products. b.other countries quickly bought the low-priced products c.other countries made low-priced products themselves d.other

    asked by Help
  27. geography

    2) resources that include workers and their labor are called ________ A) Natural resources B) human resources C) Industrial resources D) Capitol resources 3) which of these is the most likely opportunity cost of choosing to play a board game rather than go

    asked by Gav
  28. Chemistry

    I did a lab on vinegar and titration. The question asks.. In the titration of acetic acid and NaOH the use of the color indicator mandates that excess base be present to detect the reading endpoint. Will this cause the calculated and reported mass percent

    asked by Liz
  29. English-Please Help

    Based on the context clues, what is the meaning of the word catalpa in Line 27 of the poem? 27: No,m upstate they got maple and catalpa and scotch pine, A a location upstate B a species of tree**** C a family of birds D a dense puffy cloud In the previous

    asked by BUBBLES
  30. Steve - Stat

    A Bacteria has a doubling period of 8 days. If there are 2250 bacteria present now, how many will there be in 33 days? find the growth rate (Round this to 4 decimal places). Growth Rate___________. There will be _________ Bacteria. The growth rate you

    asked by Bobbie
  31. health

    when consuming fats,the healthiest choice is food high in .saturated fats .unsaturated fats .trans fats .cholesterol *** is it D ?

    asked by lexi
  32. Science Help Please

    Marie and Pierre noticed burns on their fingers after handling test tubes containing radioactive substances. This observation led to A. the discovery of natural fluorescence. B. the discovery of X-rays. C. the discovery of radiation therapy. D. the

    asked by I'm Stupid
  33. life orientation

    explain clearly how intrapersonal conflict ca be addressed through engaging in physical exercises

    asked by presley
  34. Social Studies

    Which of these would most likely be allowed to appear in China today but not in China during the Cultural Revolution? a. a film about the idea of Mao Zedong b. a newspaper article criticizing one-child policy c. a website commemorating the Tiananmen Square

    asked by Help
  35. science

    A charge of +9.0 nC and a charge of +4.0 nC are separated by 50.0 cm. Find the equilibrium position for a −1.0 nC charge as a distance from the first charge. The Coulomb charge is 8.98755 × 109 N · m2 /C 2 . Answer in units of cm.

    asked by Julia
  36. Physics

    A mass of 5Kg is 1st weighed on a balance at the top of a tower 20m high.The man is then suspended from a fine wire 20m long and reweivhed.find the difference in a weight ,assuming that the radius of the earth is 6400km,the mass of the earth is 6×10^24kg

    asked by Olushola
  37. chemistry

    What is the strongest intermolecular force that occurs between carbon dioxide molecules? A. London dispersion forces B. Hydrogen bond C. Covalent bond D. Dipole-induced dipole attractions I think the answer is D but I am not sure

    asked by Morgan
  38. Physics

    two cars start from rest and begin accerlating, one at 10m/s^2 and the other at 12m/s^2. how long will it take for the second car to be 100m ahead of the first car

    asked by Yes
  39. Three Branches

    Compare and Contrast The three branches of government. Please help i have read on plenty of websites and i found the contrast just not the compares

    asked by Social Studies
  40. life orientation

    four fraud of the students who receive and repay nfsas

    asked by phillus baloyi
  41. Science

    Which of the following planets is considered a rocky, or terristrial, planet? A. Venus B. Neptune C. Saturn D. Uranus Is the answer A? Thank you

    asked by Anonymous
  42. math

    What is the average of all of the integers from 17 to 55?

    asked by Anonymous
  43. chemistry

    Stainless steel is an alloy of iron containing 5 percent nickel and 0. 175 percent chromium. How much chromium is present in a 72.2 g sample of this alloy? Answer in units of mol.

    asked by DJ
  44. LA

    Which expression best represents the view a fatalist would have? A. "Whatever will be, will be." B. "The best is yet to come." C. "We are still masters of our fate." D. "You don't know what you have until its gone." Could the answer be A? Thank you

    asked by Anonymous
  45. Chemistry

    The reason that nonpolar oil will not dissolve in polar water is that the attractive forces between: A. the oil molecules are ionic and the attractive forces between the water molecules are covalent. B. the water molecules are weaker than the attractive

    asked by Morgan
  46. Chemistry

    Assuming that the lab procedure was conducted in an identical manner in all other respects, if a large quantity of vinegar had been taken initially for analysis, for example, a 50.0 ml instead of 25.0mL discuss briefly how each of the following would

    asked by Liz
  47. chemistry

    Several reactions are carried out using AgBr, a cream-colored silver salt for which the value of the solubility product constant, Ksp, is 5.0 x 10-13 at 298 K. a) Calculate the value of [Ag+] in 50.0 mL of a saturated solution of AgBr at 298 K. b) A 50.0

    asked by jack
  48. math

    Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey.results of the survey indicated that 8 students own a cat, 15 students own a dog and five students owned neither a cat or a dog. how many of the students surveyed owned

    asked by cynthia
  49. chemistry

    A solution of fructose, C6H12O6, a sugar found in many fruits, is made by dissolving 22.0 g of fructose in 1.00 kg of water. What is the molal concentration of fructose the solution? What is the mole fraction of fructose in the solution? What is the mass

    asked by Anonymous
  50. math

    Mary has 7 1/4 yards of fabric. she cuts off 3/4 foot of fabric to make the edge even. Mary wants to end up with 3 pieces of fabric that are the same size. how long will each piece be?

    asked by destiny
  51. LA

    What is the prepositional phrase in the following sentence? The food and the extra water were kept in storage cabinet. A. The food B. and extra water C. were kept D. in the storage cabinet Is the answer D? Thank you for your help.

    asked by Anonymous
  52. Science Help

    A projectile that is launched at 15 degrees and the landing height is the same as the launch position. If this is true, then at what other angle can the projectile be launch to achieve the same horizontal displacement?

    asked by Khloe
  53. Chemistry ( HELP PLEASE!!! )

    Consider the reaction H3PO4+ 3NaOH→Na3PO4+ 3H2O. How much Na3PO4 can be prepared by the reaction of 3.43 of H3PO4 with an excess of NaOH?

    asked by Farrell
  54. Statistics

    A Particular pain relieving medicine has a decay rate of 24% an hour. A patient was given a dose of the medicine 5 hours ago and there is currently 74mg of the medicine in the patients bloodstream. Q: What was the Origional dose of the medicine? ________

    asked by Cindy
  55. Math

    Beginning at age 35, Ms. Trinh invests $4000 each year into an IRA account until she retires. When she retires she plans to withdraw equal amounts each year that will deplete the account when she is 80. Find the annual amounts she will receive for each of

    asked by Lena
  56. env.sc.

    How many No.of ions of cadmium present in 3n moles of cadmium nitrate

    asked by upasana singh
  57. ELA

    What differences became matters of life and death during the Holocaust? There are no choices in the question. SOMEONE HELP ME PLEASE. MS. SUE, WRITETEACHER,SOMEBODY HELP ME PLEASE

    asked by Oscar
  58. Statistics - Can anybody help me?

    A Particular pain relieving medicine has a decay rate of 24% an hour. A patient was given a dose of the medicine 5 hours ago and there is currently 74mg of the medicine in the patients bloodstream. Q: What was the Origional dose of the medicine? ________

    asked by Cindy
  59. PHYSICS

    A submarine is trapped at the bottom of the ocean with its hatch at a depth of 20 m below the surface. The hatch is circular and 0.40 m. Calculate the force that would have to be exerted against it to open it. The air inside the submarine has a pressure of

    asked by Javeria
  60. Science Help Please

    1.A weatherman reports, “The storm waves are about 2 meters high and about 35 meters apart.” What properties of waves is the reporter describing? (1 point) A.frequency and wavelength B.wavelength and wave speed C.amplitude and wavelength ***

    asked by frazzled
  61. philosophy

    Libertarianism believes that causal determinism is true. Select one: True False I think true Whether or not we have free will seems to have implications for which of the following? Select one: a. Our idea of God b. Our idea of the physical laws of the

    asked by TayB
  62. French

    I am working on my French homework (direct/indirect) and would like to check my answers and make sure I am on the right track. I am having difficulty with the following: Options: Me/m’, te/t’, nous, vous, le, la, les, lui, leur, y, en A. Je vais au

    asked by Anonymous
  63. chemistry

    The Kw of water varies with temperature. Calculate the pH of water at 46⁰C with a Kw = 1.219 x 10-14. Show all calculations leading to an answer.

    asked by Ciaria
  64. Math

    1. The fourth and seventh terms of a geometric sequence are 6 and 384, respectively. What is the common ratio and the sixth term of the sequence? 2. The fifth and eight terms of a geometric sequence of real numbers are 7! and 8! respectively. What is the

    asked by Penny
  65. Math

    Of the coins in my collection, 13/25 are quarters. Of these quarters 2/3 are state quarters. What fraction of my coins are state quarters? I think I need to divide 13/25 by 2/3 and my answer will be 39/50. Is this correct. Thank you for your help.

    asked by Alice
  66. Statistics

    80. Florida State University has 14 statistics classes scheduled for its Summer 2013 term. One class has space available for 30 students, eight classes have space for 60 students, one class has space for 70 students, and four classes have space for 100

    asked by Howard
  67. Criminal Justice

    Planned, premeditated killings of family members whose behavior is judged to have brought shame or dishonor to the family are referred to as:

    asked by Mike
  68. english check answers

    You have taken me prisoner with all my warriors. I am much grieved, for I expected, if I did not defeat you, to hold out much longer, and give you more trouble before I surrendered. I tried hard to bring you into ambush, but your last general understands

    asked by jimm
  69. algebra

    What is a quadratic function?

    asked by Alex
  70. Chemistry

    The density of air is about 1.29g/l at standard temp and pressure . Would carbon dioxide rise up or sink in the atmosphere ? Thanks:)

    asked by Maya
  71. Mathematics

    The sum of the 1st and 2nd terms of an AP is 4 and the 10th term is 19. Find the sum of the 5th and 6th terms

    asked by Amaka
  72. math

    convert 34.6% to a decimal

    asked by Damaris
  73. Marianne

    Fill in the blank: The electrons follow a ________ path when they are deflected in a magnetic field due to the magnetic force.

    asked by Physics
  74. Algebra

    A chemist has one solution of 20% acid and another of 50% acid. how many millimeters of each are needed to obtain 30 ml of 30% acid?

    asked by TJ
  75. Math (Pre-Calc)

    Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ∠A1 is smaller than ∠A2.) b = 74, c = 84,

    asked by Alyssa
  76. statistics

    A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 395 babies were born, and 316 of them were girls. Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born.

    asked by slomomo
  77. english

    The principal parts of a verb are A. present tense, past tense, future tense. B. present tense, present participle, past tense, past participle. C. base form, helping verb, past participle. D. base form, past tense, past participle, future tense.

    asked by Anonymous
  78. CHEMISTRY

    How many atoms of carbon are present in 12.9 g of a compound that is 36 .7% carbon, by weight? Answer in units of atoms.

    asked by DJ
  79. Physics - Mechanics

    A large box of mass M is at rest on a horizontal table whose surface is rough; the coefficient of static friction between the table and the block is μ. The box is connected by a taut string to a small block of unknown mass m, initially held horizontally

    asked by Anonymous
  80. Chemistry

    An electron has an uncertainty in its position of 507pm. What is the uncertainty in its velocity?

    asked by J
  81. Pre-Calculus

    Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ∠B1 is smaller than ∠B2.) a = 34, c = 43,

    asked by Alyssa
  82. chemistry

    600 gallons of 15 M nitric acid were added to a lake. The initial pH of the lake was 5.90 and the final pH was 3.70. What is the volume of the lake?

    asked by mar
  83. college physics

    When a thin 12.0cm iron rod moves with a constant velocity of 6.50m/s perpendicular to the rod, the induced emf across its ends is measured to be 0.300V. What is the magnitude of the magnetic field?

    asked by a
  84. Physics - Mechanics

    A bullet of mass m is shot at speed v toward a pendulum bob of mass M. The bullet penetrates through the block and emerges on the other side traveling at speed v/2. 1. What is the speed v_block of the block immediately after the bullet emerges from the

    asked by Anonymous
  85. INT. Algebra

    suppose that W is inversely proportional to V. If W = 63 when V = 9, find W when V = 81

    asked by Rocio
  86. vectors and geometry

    Find the scalar product a.b. If a = 2i + 3j + 4k and b = 5i - 2j + k

    asked by hart
  87. Physics - Mechanics

    A small block of mass 1.2 kg is launched by a compressed spring with force constant k=600 N/m. The initial compression of the spring is 0.15 m. The block slides along a horizontal frictionless surface and then up an inclined plane that makes an angle

    asked by Anonymous
  88. Social Studies

    CCA User 2) The only native american's who successfully stayed on their land were the? A)Seminole*** B)Sauk C)Cherokee D)Fox 5)The first college in the United States to admit women and African Americans? A)Mount Holyoke B)Ashmun Institute C)Oberlin college

    asked by Kailli
  89. chemistry

    describe how you can prepare 500cm of0.1m of standard hydrochloric acid from commercial concentrated HCL of density 1.18g/cm and percentage by 37%

    asked by Anonymous
  90. Math

    a hillside is inclined at an angle of 30 degrees with the horizontal. how much altitude has mary gained after hiking 40 meters up the hill?

    asked by Wilma
  91. chemistry

    What volume of 0.050 M AgNO3, silver nitrate solution is required to reat completely with 60.0 mL of 0.025 M K2S, potassium sulfide?

    asked by AJ
  92. trig

    a balloon is tethered to the ground by a string 5 m long if the string makes an angle of 65 degrees with the ground how high above the ground is the balloon

    asked by liz
  93. chemistry

    what's the lewis dot diagram for methanol?

    asked by Laura
  94. Math

    1. Find all values of p so that 6p, 4p-1, p^2 - 1 will be an arithmetic sequence. 2. The common ration of a geometric sequence is -3. IF the terms of this sequence are 3y, y+6, z+1, ..... respectively, what is the value of z?

    asked by Lily
  95. linear algebra

    The outstanding balance on Peter's credit card account is 4730 dollars. The bank issuing the credit card is charging 19.3 percent of interest per year compounded monthly. If Peter decides to pay off his balance in equal monthly installments at the end of

    asked by baris
  96. Math - Geometry

    An object is launched from certain height into the air. The height is modeled by the the function h(t) = -4.8t^2+23t+20. The time (t) is measured in seconds. A) What is the maximum height? B) After how many seconds will it hit the ground? C) From what

    asked by Lilly
  97. physics(Please respond)

    if a rock is dropped into a well and it takes 17 seconds to hit the water how far down is the water level from the top of the well

    asked by mike
  98. Statistics

    Good Afternoon, Hope everyone will have a nice weekend. I am sorry to bother you all, but I am failing statistic. Can someone give me an example of this and example of a regression hypothesis. Thank you

    asked by mary ann
  99. math

    a model of a solid structure in the shape of frustum of a cone with hemispherical top. The diameter of the hemispherical part is 70 cm and is equal to the diameter of the top of the frustum. The frustum has a base diameter of 28 cm and slant height of 60

    asked by kudu
  100. math

    What is 612 divided by 9

    asked by Jamaya
  101. Math Triangles

    ABCD is a trapezium in which AB is parallel to DC and its diagonals intersect each other at point O .Show that AO/BO=CO/DO

    asked by Sadaf
  102. chemistry

    What is the % carbon by weight in 1.7 grams of potassium carbonate (K2CO3)? Answer in units of %.

    asked by DJ
  103. Math

    1. Find the inverse of the logarithmic function f defined by f(y) = 2 log5 (2y-8) + 3. 2. If x > y > 1, what is the largest possible value of logx (x/y) + logy (y/x)?

    asked by Lily
  104. vectors and geometry

    Given that a = 5i +2j - k and b = I - 3j + k. Find (a + b) x (a + b).

    asked by hart
  105. Calculus 1

    Use logarithmic differentiation to find the derivative of the following equation. y = (2x+1)^5(x^4−3)^6

    asked by TayB
  106. Chemistry

    Rolaids is an over the counter remedy for upset stomachs that functions by reacting with stomach acid. The active ingredients are calcium carbonate (550 mg) and magnesium hydroxide (110 mg). The inactive ingredients are dextrose, flavoring, magnesium

    asked by Jen24
  107. chemistry

    if .5 g of a KHP containing unknown mixture requires 7 mL of NaOH to reach the endpoint of titration, what mass of the unknown should be weighed out to consume 20 mL of the NaOH. If anyone could help me start this that would be appreciated. Thanks!

    asked by lawerence
  108. Physics

    In the drawing, the weight of the block on th e table is 380 N and that of the hanging block is 175 N. Ignore all frictional effects, and assuming the pulley to be massless. What is the acceleration of the two block?

    asked by Cameron
  109. Social Studies

    Can someone please explain John C. Calhoun dream for the United States.

    asked by Reed
  110. Geometry

    John is painting the side of a building that is 30ft tall. The ladder is at a 68 degree angle with the ground. while standing on the ladder the highest point John can reach is 4 ft above where the ladder touches the wall. What is the shortest ladder John

    asked by Tricia
  111. chemistry

    describe how you can prepare 500cm of 0.1 of hydrochloric acid from commercial Hcl of density 1-18g/cm and the percentage by mass 37%

    asked by kennedy
  112. Swakop High

    John has $6000 to invest. He invests part of it at 5% and the rest at 8%.How much should be invested at each rate to yield 6% on the total amount?

    asked by sara
  113. Pre-Calculus

    I posted this question about an hour ago, got a response but still confused. Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place.

    asked by Alyssa
  114. Math 2

    The bottom of the ladder rests on a horizontal flat surface and the top of the ladder rests against a wall. The ladder makes an angle of elevation of 61°. The bottom of the ladder is 6 ft from the base of the wall. How long is the ladder? Round your

    asked by Tomiya
  115. math

    The acceleration, ams^-2, of a particle is given by a =25 – 9t^2, where t is in seconds after the particle passes fixed point O. If the particle passes O, with velocity of 4 ms^-1, find (a) An expression for velocity V, in terms of t (b) The velocity of

    asked by kudu
  116. Chemistry

    If 5.40 kcal of heat is added to 1.00 kg of ice at 0⁰C, how much liquid water at 0⁰C is produced? Show all calculations leading to an answer.

    asked by Ciaria
  117. Separation processes

    Can someone help me to clarify this question? I'm not sure whether the answer is a), d) or e). What is the definition of the bubble-point line? Select one: a. The line that shows when the liquid begins to boil/evaporate b. The vapour-liquid mixture region

    asked by Swaastikaa
  118. Math

    1. The sequence log2 32, log2 y, log2 128, ... forms an arithmetic sequence. What is the value of y? 2. If log a^2 b^3 = x and log (a/b) = y, what are the values of log a and log b?

    asked by Lily
  119. science

    calculate the net force on an object that has a mass of 12kg and acceleration of 4m/sec

    asked by Veronica
  120. Stats

    A random sample obtained from a population has a mean of µ=100 and a standard deviation of ó = 20. The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a

    asked by Mark
  121. Math Functions (if i have correct answer)

    The function h(t)= 2 + 50t -1.862t^2, where h(t) is the height in metres and t is the time in seconds, models the height of a golf ball above the planet Mercury's surface during its flight. What is the maximum height reached by the ball? My answer is

    asked by Jackie
  122. maths

    a cubical water tank is filled by tap water at the rate of 1.4liters per second. find the length of the tank in centimeters if the tank if completely filled in 28 sec

    asked by neevetha
  123. Math

    Thank you Ms. Sue to my question on the coin collection. I just haven't figure out when to divide and when to multiply with these word problems this past week. So my answer will be 2/3 times 13/25 = 26/75 Thank you and have a nice evening.

    asked by Alice
  124. science

    How many sex chromosomes are found in the reproductive cells of human being?

    asked by sanjay
  125. probability

    Exercise: Sections of a class A class consists of three sections with 10 students each. The mean quiz scores in each section were 40, 50, 60, respectively. We pick a student, uniformly at random. Let X be the score of the selected student, and let Y be the

    asked by RVE
  126. AP Chem

    A mixture of 1.380 g of H2 and 66.80 g of Br2 is heated in a 2.00-L vessel at 700 K. These substances react as follows. H2(g) + Br2(g) equilibrium reaction arrow 2 HBr(g) At equilibrium the vessel is found to contain 0.605 g of H2. (a) Calculate the

    asked by Adriana Vargas
  127. English

    I am doing a compare and compassion essay. One paragraph has be about Midwest Food and the next paragraph about the South Food.How to add simlar and differences to each of this paragraphs?

    asked by m
  128. English

    Should fragrances be allowed in schools? I need 3-4 reasons for no. the only one that i can think of would be that people are allergic to it. What are some other ones?

    asked by Elizabeth
  129. math

    write a four equations in slope-intercept form of four different lines that are parallel and graph the line ?? HELP pleaseee!! thank you

    asked by may
  130. Maths lit, geography, economics and cat

    I need to know which career can i ff with this subjects? i passed my matric with bachelor last year i gained 33 points plz help me.

    asked by Nobuhle
  131. Eng 1511

    I realized that she was not like the other girls

    asked by Nokuzola Ntsunja
  132. math

    Calculate -3²

    asked by vizzy
  133. Algebra 2

    Find a third-degree polynomial equation with rational coefficients that has roots -1 and i+1

    asked by Ryan
  134. Math - Geometry

    I'm having problems with one of the questions on my homework. It has 4 parts. Thanks 9) y = -2(x + 5)^2 + 4 A) Find Vertex B) Find the Zeros C) Find the y-intercept(s) D) This function has a: a) Minimum b) Maximum

    asked by Lilly
  135. physics

    If you do 500J of work to elevate a bucket of water, what is its gravitational potential energy relative to its starting position? 500*10=5,000 5,000/500=10

    asked by Lara
  136. Math

    1. Solve for y in the equation 15 * 3^(y+1) - 243 * 5^(y-2) = 0. 2. Solve: log y-1 = -log(y-9)

    asked by Lily
  137. science

    Calculate the average speed of a water molecule (with a mass of 3.0e-26 kg) on the surface of Venus (730 Kelvin).

    asked by A
  138. Physics

    A beam of light makes an angle of θi = 53.0˚ with the normal of a slab of transparent material of t=3.80 mm-thickness. The index of refraction of the glass is n2 = 1.39. Angle 3 is 53.1 b) How far vertically (d) is the point at which the beam leaves the

    asked by Emily
  139. Calculus 1

    Find the derivative of the function. F(t) = e^(4t sin 2t)

    asked by TayB
  140. chemistry

    If you dissolve 220.3 Pounds of ammonium nitrate in water to obtain a final solution volume of 500. gallons what is the [NH4+] (of course in mol/L)?

    asked by Jaxx
  141. math

    I have 120 square blocks I want to make a large square how many do I put in each row

    asked by tom guzmam
  142. math

    If A,B and C are the points P and Q are p and q respectively is another point with position vector r = 3q – ½ p. Express in terms of p and q. i) PR ii) RQ hence shows that P, Q and R are collinear. iii) Determine the ratio PQ: QR.

    asked by kudu
  143. Calculus

    How would I find the instantaneous rate of change using this formula y=3.9657(0.9982^x) and given a table of values?

    asked by Sara
  144. chemistry

    I would love help on trying to start this problem?

    asked by jack