Questions Asked on
May 4, 2012

  1. Physics

    A fan at a rock concert is 45.0 m from the stage, and at this point the sound intensity level is 108 dB. Sound is detected when a sound wave causes the tympanic membrane (the eardrum) to vibrate . Typically, the diameter of this membrane is about 8.40 m in

    asked by Kyle
  2. geometry

    Miguel looks out from the crown of the Statue of Liberty approximately 250 ft above ground. He sights a ship coming into New York harbor and measures the angle of depression as 18 degrees. Find the distance from the base of the statue to the ship to the

    asked by kaelan
  3. HISTORY

    In 2001, President George W. Bush signed the Economic Growth and Tax Relief Reconciliation Act of 2001 (EGTRRA). This bill called for large tax cuts just as the Economic Recovery Act of 1981 had and largely benefited the wealthiest Americans. President

    asked by JO
  4. Math

    The present value of the money in your savings account is $420, and you're receiving 3% annual interest compounded monthly. What is the future value in two months?

    asked by Paige
  5. Chemistry!!

    1) Write balanced chemical equation for the oxidation of Fe^2+(aq) by S2O6^2-(aq)? 2)Write balanced chemical equation for the oxidation of Fe^2+ by N2O 3)Write balanced chemical equation for the oxidation of Fe^2+ by VO2+

    asked by John
  6. physical science

    a 30 kg girl and a 25 kg boy face each other on friction-free roller blades.the girl pushes the boy,who moves away at a speed of 1.0 m/s.the girl,s speed is _ m/s.

    asked by Anonymous
  7. Physics

    The nucleus of a certain type of uranium atom contains 92 protons and 143 neutrons. What is the total charge of the nucleus in Coulombs?

    asked by Hunter
  8. Chemistry

    The Ksp value for PbS(s) is 8.0x10^-28. By using this value with an electrode potential from Appendix E in the textbook, determine the value of the standard reduction potential for the reaction: PbS(s) + 2e- --> Pb(s) + S2- (aq)

    asked by Mike
  9. 6th Grade Science

    How did earthquakes contribute to the destruction of over seventy villages in Tibet? What does a concave scar on a hillside reveal about the formation of the landscape? How can erosion form new land? Please help me. I don't have any answers and I really

    asked by poisoned thorn
  10. CHEMISTRY

    what volume of 0.100 M NaCl is needed to react completely with 5.00 mL of 0.200 M Pb(NO3)2?

    asked by Candace
  11. Calculus grade 12

    Explain why three directional vectors of the plane cannot me mutually perpendicular .

    asked by J
  12. math

    The first three terms of a geometric sequence are as follows. 64, 32, 16 Find the next two terms of this sequence.

    asked by Wilson
  13. calculus

    Sketch the region enclosed by 2y=5sqrtx, y=5 and 2y+3x=8. Decide whether to integrate with respect to x or y, and then find the area of the region.

    asked by ayee
  14. chemistry

    1.what is meant by atomic number of an element? 2.the mass number of an element is 18,it contains 7 electrons.what is the number of protons and neutrons in it?what is the atomic number of the element? 3.an element has an atomic number of 11 and its mass

    asked by pooja
  15. algebra

    the riddle that says did yu hear about...

    asked by Anonymous
  16. history

    Discuss the original purposes of the Freedman’s Bureau and the goals of the planned enlargement of the program by Congress. Evaluate how successful it was in helping the Reconstruction efforts

    asked by Dave
  17. PhYSiCs

    A -10 mC charge experiences a force of 75 N directed south. What is the electric field magnitude and direction at the location of the charge? If this charge is removed and not replaced, what is the electric field magnitude and direction at the location it

    asked by Allieeeeeeee:)
  18. Physics

    A massless string is wrapped around a cylinder of mass 0.400 kg and radius 0.100 m. The string is attached to the ceiling. The cylinder is released. As it falls, the string unwinds. What is the magnitude of the acceleration of the cylinder as it falls in

    asked by Chris
  19. physics

    A 6 mC charge experiences a force of 6 N directed north. What is the electric field (magnitude and direction) at the location of the charge? Would E=1000 N/C and direction is north Find the force (magnitude and direction) on a -20 mC charge that replaces

    asked by Alex B.
  20. Phys.

    A 6 mC charge experiences a force of 6 N directed north. What is the electric field (magnitude and direction) at the location of the charge? Would the direction still be north? And the magnitude 1000?

    asked by Alex B.
  21. Physics

    What is the electric force of attraction between charges of 3 C and -4 C separated by a distance of 2 m?

    asked by Lisa
  22. math models

    Compute the number of vinyl tiles, measuring 6 in. each side, needed to tile a kitchen measuring 20 ft. by 16 ft.

    asked by Clarissa
  23. Math

    A student got these marks on 7math tests: 91%,75%,95%,,80%,83%,86%,68% What mark will the student need on the 8th test to make each statement true? a)The mean of the tests is 84% b)The mode of the eight tests is 86% c)The median of the eight tests is 84%

    asked by Cherie
  24. chemistry

    What is the solubility of AgCl when it is in a solution of 0.15 M NaCl? (AgCl has Ksp = 1.8 x 10-10.) Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium concentration. Write down the equation for the Ksp

    asked by Anonymous
  25. physics

    what is the temperature increase of 6.4 kg of water when it is heated by a 7.7*10 square? (cp=4186j/kg*degrees celsius)

    asked by crissy
  26. Calculus

    How do I differentiate ln (2X^2 - 12X + Y^2 -10Y) and the second differentiate it? HELP ASAP is much appreciated

    asked by Michelle
  27. Physics

    A pendulum is composed of a mass m suspended from the ceiling by a massless string of length L. If the mass is pulled back so that it is raised an amount L/4 and then released, what is the tension on the string at the bottom of the swing? A.3 mg B.4 mg C.2

    asked by Chris
  28. College Chemistry

    A gas containing carbon and hydrogen analyzed as 85.6 % carbon and 14.4 % hydrogen. A 42.1 g sample of a gas occupied a volume of 7490 mL with a pressure of 2280.0 torr at 92 °C. Enter the molecular formula of the compound. Thanks.

    asked by Lance
  29. spanish

    what does A los niños les gusta _____ con muchos colores mean?

    asked by Declan
  30. statistics

    The international olympic committe states that the female participation in the 2004 summer olympic games was 42%, even with new sports such as weight lifting, hammer throw, and modern pentathalon being added to the games. Broadcasting and clothing

    asked by matt
  31. al mustafa publick school

    two planets of masses m and respectively.have a centre to center separation of r.at what distance from the center of the pianet of mass m do the gravitational force of planets cancel each other???

    asked by hussain
  32. Physics

    By what distance must two charges of +2 C and +4 C be separated so that the repulsive force between them is 4.10 1010 N?

    asked by Karlie
  33. chemistry

    assuming that a neutron star has the same density as a neutron, calculate the mass in kilograms of a small piece of a neutron star the size of a spherical pebble with a radius of 0.11mm

    asked by Karon
  34. Word problem

    Jessica just bought a refrigerator for 570 . She paid 199.50 in a down payment and will pay the rest in 5 equal installments. How much does she need to pay for each installment? is this Answer 74.10

    asked by PLS Check
  35. physics

    water density 1000 kg m3 falls without splashing at a rate of .37 L/s from a height of 45.3 m into a .610 kg bucket. if the scale is originally empty, what does the scale read 1.76 s after the first drop contacts the bucket?

    asked by Anonymous
  36. world history

    In the reading, What To Do About the Christians?,the emperor Trajan and pliny the Younger exchange letters concering the persecution of Christians. From this exchange which of the following assumptions could NOT be made? A. Neither party knows much about

    asked by ciara
  37. physics

    A Piece of string 5.3-m long has a mass of 15.o g what must the tension in the string be to make the wavelength of a 125- Hz wave 120.0 cm

    asked by Anonymous
  38. Geometry

    ABCD is a parallelogram with angle B= 120, angle C= 60, angle D= 2x+5y, and angle A= 4x+y. Find the values of x and y. Check your solution, only an algebraic solution will be accepted.

    asked by Ralph
  39. Algebra

    Hang time? If a basketball player has a vertical leap of about 30 inches, what is his hang time? V-48T^2 Hang time to the nearest tenth in seconds. :-)

    asked by ShelbyA
  40. Psychology

    Please check my answers and let me know if they are right or wrong. 1. Behaviorism as a means of studying the mind emerged due to the limitations of Introspection. Behaviorists examine: >subjective behavior. >covert behavior. >overt behavior.x (My Choice)

    asked by Kathy
  41. history

    Describe the purpose of the Native American reservation as well as the lives led by those who resided there. Did the reservation encourage or discourage Native American culture? If so, in what ways?

    asked by Dave
  42. chemistry

    For the reaction H2(g) + I2(g) ¡ê 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial concentration, change in concentration,

    asked by Anonymous
  43. chemistry

    An indicator has the reaction Hln(aq) ¡ê H+(aq) + In-(aq). Explain how the indicator can change color when a strong base is poured into a solution of this indicator. Will a strong base dissociate? Which way will this cause the reaction to shift? Is there

    asked by Anonymous
  44. chemistry

    Explain why a buffer made of equal concentrations of HF and F- does not change in pH when a small amount of HCl (a strong acid) is added to the solution. Does the HCl dissociate into ions when it is added to the solution? What do the hydrogen ions react

    asked by Anonymous
  45. Algebra

    The bus stations in Trawlwy and Fenton are 220 miles apart. A bus left Trawley for Fenton at 9:00am. Traveling at 40 miles per hour. One hour later, an express bus left Fenton for Trawley traveling along the same road at 50 miles per hour. At what time did

    asked by Miranda
  46. trigonometry

    I need help in understanding how to identify which identity to use. using this question as an example. Show that tan theta (sin theta+cot theta cos theata)all over cos theta = sec^2 theta. Please explain.

    asked by lindsay
  47. Chemistry

    Using half reactions, write the equation for MnO4- reacting with H2O2 in acid solution to give Mn2+ and O2

    asked by Tammy
  48. how to work this

    Estimate 15.264 - 8.12 by first rounding each number to the nearest tenth. is the rounding answer 15.264=15.300 8.12=8.10

    asked by PLS Check
  49. physical science

    a 30 kg girl and a 25 kg boy face each other on friction-free roller blades.the girl pushes the boy,who moves away at a speed of 1.0 m/s.the girl,s speed is _ m/s.

    asked by Anonymous
  50. Math

    A bullet hole in the wall at height of 7'6 inches from the floor. Bullet passed through wall at angle 34 degrees. If they assume that the gun was fired from a height 4' above the floor, how far away from the wall was it when it was fired? (nearest inch)

    asked by Timothy
  51. calculus

    Find the volume of the solid formed by rotating the region enclosed by y=e^(2x)+1 y=0 x=0 x=0.9 about the y-axis.

    asked by cjones
  52. calculus

    Find the volume of the solid formed by rotating the region enclosed by y=e^(2x)+1, y=0, x=0,x=0.9 about the y-axis.

    asked by carlton
  53. chemistry

    The chemical reaction N2(g) + 3 H2(g) ↔ 2 NH3(g) is at equilibrium. An experimenter injects a small amount of N2 into the reaction chamber. What happens to the forward reaction rate right after the injection of the N2? What happens to the reverse

    asked by Anonymous
  54. Chemistry

    4.0 moles of lithium bromide, LiBr, dissolved in 5.0 moles of water

    asked by RYAN
  55. chemistry

    how to Calculate the molarity of a solution if sulphuric acid contains 13%H2SO4 by mass and density is 1.02 gm per cm3.

    asked by hari
  56. calculus

    Find the volume of the solid formed by rotating the region enclosed by y=e^(2x)+1 y=0 x=0 x=0.9 about the y-axis.

    asked by ayee
  57. physics

    (a) a person in a wheelchair approaches a 0.50-m-high ramp with a speed of 3.5 m/sec. calculate the final speed of the wheelchair at the top of the ramp if the person coasts up and friction is negligible. (b) what initial speed would be necessary to be 1.0

    asked by sara
  58. physics

    (a) calculate the number of kilocalories needed to climb 232 stair steps (116 steps per minute for 2 min.) *climbing stairs (116/min.) = energy consumption rate is 9.8 (kcal/min) * (b) calculate the gain in gravitational potential energy for a 50-kg person

    asked by sara
  59. math

    In rectangle ACDE, AB=5cm, C=10cm, and BE=13cm (triangle within the rectange is BDE). What is the total area outside the triangle?

    asked by Trish
  60. Word problem

    Amanda has to carry 247 apples from a farm to the market. How many baskets will she need, given that each basket can hold 33 apples? Baskets :

    asked by Sean La
  61. finance

    You take out a 30- yr mortgage loan, purchase price is $120,000 put $20,000 down and finances the balance of $100,000 at fixed annual loan rate of 12%, what will be your monthly payment? How much total interest will you have paid at the end of 30 years?

    asked by tj
  62. us history

    choose the phrase that best completes the following statement. one difference between the strategies of Dr.martin luther king Jr.and some later civil rights group was that king was committed to a)ending discrimination in housing and unemployment b)using

    asked by lisa
  63. physics- MC QUESTIONS

    Can you help please Question1: A car makes a banked turn on a "real" road (meaning you can not ignore friction), which of the following are forces that act on the car: (for full credit you must select ALL that are true) A)centripetal force B) friction C)

    asked by emiie
  64. Math

    Round 0.575 to the nearest hundredth. Answer =0.60 Estimate 15.264-8.12 by first rounding each number to the nearest tenth. Answer 15.270-8.1= if these aren't correct show me how to work these ?

    asked by PLS Check
  65. College chemistry

    Need help balancing chemical equation. Complete and balance the chemical equation. Be sure to include the states of the reactants and products. C3H8(g)+O2(g) →

    asked by Lance
  66. chemistry

    if the radius of a neutron is 1.0 x 10 minus 13cm calculate the density of a neutron in g/cm 3

    asked by Karon
  67. Conic Sections: Circles

    A row of sprinklers is to be installed parallel to and 4.5 feet away from the back edge of a flower bed. Each sprinkler waters a region with a 6 foot radius. How far apart should the sprinklers be placed to water the entire flower bed with the least

    asked by Anonymous
  68. chemistry

    how to Calculate the molarity of a solution if sulphuric acid contains 13%H2SO4 by mass and density is 1.02 gm per cm3.

    asked by hari
  69. maths

    If the pth term of an AP is q and the qth term is p, prove that its nth term is (p+q-n).

    asked by ridhi
  70. Chemistry

    1. As the strength of a weak acid increases, the proportion of ions to molescules increases or decreases? ... I think that it will increase. Is this right? 2. As the as the concentration of a weak acid increases, the pH... decreases? Is decreases correct?

    asked by April
  71. Art

    Could you please help me find examples of phrasal verbs used in phone calls? Thank you, Writeacher. 1) You can call me up whenever you want to. Shall I ask him to call you back? 2) The line is engaged. Would you like to hang on/hold on? Hang on, I'll put

    asked by Frank
  72. Art

    I left out the following sentences. Thank you, Writeacher. 1) You mustn't leave the school building without either your teacher's or your parents' permission. 2) You shouldn't revise for a test just the day before (the test). You shouldn't run in the

    asked by Frank
  73. DEsperate to undertsand-Chemistry

    The pressure of gas is measured at 550 mm Hg. Calculate the pressure in a. Torr b. lb/in2 c. atm d. in Hg How do I set up these conversions to get the [prper calcu;ations...step by step? This is the 3rd time zzzzzzzIve posted this question and I need to

    asked by KL
  74. Algebra

    x^1/2 * y^1/6 *z^1/5. We are to use rational exponents to write an expression. The sqrt of x - the sqrt of y, over the sqrt of x + the sqrt of y. I need to simplify and use radicals as needed. I obviously do but what...?? Please assist. Thank you.

    asked by Maria
  75. Math

    Ryder tossed two coins 50 times.He recorded two heads 11 times. A)what is the experimental probability of obtaining two heads as a percent? b)the theoretical probability of obtaining two heads is 25%.How could Ryder repeat the experiment to obtain an

    asked by Cherie
  76. chemistry

    1. name the three fundamental particles present in an atom? mention the masses of the particles in M.K.S. system? 2.what is a proton? stste its relative mass and charge? 3.how many times a proton is heavier than an electron? 4.what important information

    asked by pooja
  77. calculus

    Find the volume of the solid obtained by rotating the region bounded by y=5x+25 y=0 about the y-axis.

    asked by cjones
  78. calulus

    The volume of the solid obtained by rotating the region enclosed by y=x^2 y=2x about the line x=2 can be computed using the method of disks or washers via an integral The volume is V

    asked by cjones
  79. Calculus grade 12

    Determine an equation for the line parallel to 2x + 6y + 4z = 1 and contains the point P(3, 2, 1).

    asked by J
  80. math

    8x-5y=-35 5y-8x=35 Is the above a point, have no solution, or infinatley many solutions?

    asked by Frank
  81. Calculus

    1. a) Write the vector and parametric equations of the line through the points A(6, -1, 5) and B(-2, -3, 6). b) Find another point on the line in (a). ----- This is what I got for a) r = 6i-j+5k + t(-8i-2j+k) x = 6-8t y = -1-2t z = 5+t I need help with b)

    asked by J
  82. CIS

    Design a flowchart using Visual Logic for the following: A program that accepts a candy name (for example, “ chocolate-covered blueberries”), price per pound, and number of pounds sold in the average month, and displays the item’s data only if it is

    asked by Anonymous
  83. math

    Divide. 7/1.61= 4.34 Multiply. 41.6 X 0.49 = 20.384 Divide 6.4/73.6 =0.66

    asked by Please check faith
  84. History

    This question deals with liberty and power. How have people in North America acted to create, preserve, organize, and resist power from the founding of Jamestown in 1607 through the Civil War to 1865?

    asked by Miguel
  85. math

    given a right triangle ABC with the right angle at B find AB if AC = 25 in and BC = 6 in Approximate the length of AB to two decimal places

    asked by mt
  86. Calc III

    Find the position vector of a particle that has the given acceleration and the specified initial velocity and position. a(t)= 56t i + sin(t) j + cos(2t) k v(0)= i r(0)= j I need help finding r(t) Thanks so much for your help!!

    asked by Emily
  87. history

    • Explain the politics of consensus

    asked by lisa
  88. math

    how many 2in by 5in by 3in boxes will fit in a 2ft by 4ft by 8ft container.

    asked by shon
  89. Chemistry-Answer & Solution please!~

    An AM radio statrion broadcasts atr 1060jGHZ Calculate tghe wavelength of the coressponding radio waves. Ned solution amdhow to get the answr! Thank you!

    asked by KL
  90. geometry

    Find the area of pentagon CANDY with vertices C(-6,8), A(3,8), N(6,-2),D(-4,-1),and Y(-7,4).

    asked by Gio
  91. english

    Does the folloeing sentence: It contains as many as ten thousand islands have any adverb clauses

    asked by kaila
  92. math

    The vertices of a triangle are listed below. H(-2,4), I(22,4), J(10,-1) Which of the following correctly classifies the triangle? 1.The triangle is an obtuse isosceles triangle. 2.The triangle is a right scalene triangle. 3.The triangle is an obtuse

    asked by ana
  93. math

    Round 546 to the nearest ten. Round 5,762 to the nearest hundred. Round 3,050 to the nearest thousand.

    asked by Wilson HELP
  94. Math

    Estimate 39,439 - 28,744 by first rounding each number to the nearest thousand.

    asked by Ki
  95. Math

    Round 0.575 to the nearest hundredth. Estimate 15.264 - 8.15 by first rounding each number to the nearest tenth.

    asked by Sean La
  96. science

    If the mass of solute 9.0 and the volume of solution is 250 mL, what is the solute's percent?

    asked by RYAN
  97. Math

    Limit as x approaches 0 √5+x - √5/x

    asked by Nakira
  98. science

    If the mass of solute 9.0 and the volume of solution is 250 mL, what is the solute's percent?

    asked by RYAN
  99. Honors Chemistry

    An aqueous solution of NaCl has a concentration of .500 M. 35.0 mL of this solution is allowed to evaporate to a volume of 20.0 mL. a) Is the solution more concentrated or more dilute afterwards? b) What is the new concentration of the solution?

    asked by Lou
  100. PHYSICS PLEASE HELP !

    Q : As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop a: force down due to gravity b: force down from the seat on you c: force up on you from the straps holding you in place d:

    asked by JACOB
  101. chemistry

    Barium Nitrate is a not very soluble nitrate. Calculate the Ksp (at 25 degrees) from the following ΔG's: Ba2+ = -561kj/mole NO3 1- = - 109kj/mole Ba(NO3)2 = - 797 kj/mole I did the first step and I ended up with dGrxn = -127 kj/mol. When I plugged it into

    asked by Viki
  102. Chemistry

    Complete and balance the chemical equation. Be sure to include the states of the reactants and products. SO2(g)+O2(g) → thanks

    asked by James
  103. algebra

    show me how to work this problem b/3+6=82

    asked by patricia
  104. algebra

    show me how to work this problem b/3+6=82

    asked by patricia
  105. physics plz

    Can you help please Question1: A car makes a banked turn on a "real" road (meaning you can not ignore friction), which of the following are forces that act on the car: (for full credit you must select ALL that are true) A)centripetal force B) friction C)

    asked by emiie
  106. physics help please

    Q : As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop a: force down due to gravity b: force down from the seat on you c: force up on you from the straps holding you in place d:

    asked by JACOB
  107. Wastewater treatment

    What is the molarity of 24.5 grams of sulfuric acid dissolved in a liter of water?

    asked by George
  108. chemistry

    1state relative mass and charge of an electron 2 an atom of an element X may be written as 4X^9 (a)What does the figure 9 indicate? (b)what is the number of protons in an atom X? (c)what is the number of electrons in an atoms X? (d)what does the number 4

    asked by pooja
  109. chemistry

    1 the mass of one mole of electron is ...... mg. 2 copper(I) ions contains .......... electrons in its 3rd orbitals 3 if both K and L shells of an atom are full,what is the total number of electrons contained in them? 4 what is maximum number of electrons

    asked by pooja
  110. Algebra

    n^3-9n/n^2-64 Numbers for which the rational expressions is undefined?

    asked by Susan
  111. l.o

    homelessness 5way in which the human or environmental problem impact on the community

    asked by ornella
  112. Math

    Bob planted some lettuce seedlings in his garden. After a few days, one-tenth of these seedlings had been eaten by rabbits. A week later , one-fifth of the remaining seedlings had been eaten, leaving 36 seedlings unharmaed. How many seedlings had Bob

    asked by Victoria
  113. math

    find the indicated outputs for f(x)=3x^2-4x f(0)= f(-1)= f(2)=

    asked by plz help
  114. Business Math

    the finance charge at 12% interest for an original charge amount of 300.00 and a payment of 50.00 halfway through the month would be how much ?

    asked by Lennnnnnn
  115. chemistry

    Dr Bob i know the density of a neutron is 1.00727638 but do not know how to multiply it out. This supposed to be a beginner coarse.

    asked by Karon
  116. math

    Suppose that you are responsible for predicting the cost of constructing a new office building. You find that the first story costs 500 dollars per square meter of floor space, and the second story costs 600 dollars per square meter. Assume that the costs

    asked by Kim
  117. Math

    Simplify: 5/3x + 2/x A) 7/4x B)3/x C)11/3x D) 7/2x My answer is (D).. Can someone tell me if this is the right answer?

    asked by Andra
  118. calculus

    Find the volume of the solid obtained by rotating the region bounded by y=5x+25 y=0 about the y-axis.

    asked by ayee
  119. science

    a 110 kg person dives off a cliff and hits the water at 17 m/s. how high is the cliff?

    asked by luis
  120. business/social work

    In terms of mediation, is power-and-rights negotiation the same as positional bargaining or negotiation?

    asked by jim
  121. algebra

    how do you solve this rational equation s+4/su^2 + 6s+4/s^2u

    asked by kim
  122. geometry

    If a circle has an area of 100 pi square units and a chord of 6 units what is the length of the intercepted arc?

    asked by Anonymous
  123. math

    you have a bicycle with 26 inch diameter tires. if you ride it for 6 miles, how many revolutions will each tire make?

    asked by shon
  124. social studies

    Which side won the battle of the coral sea

    asked by cay
  125. Chem help-please

    At o degrees celcius, a 1.0-L flask contains 5.0 x 10^-2 mol N2, 1.5 x 10^2 mg O2 and 5.0 x 10^21 molecules of NH3. What is the p00artial pressure of each gasnand what is the total pressure in the flask? I need to understand how to calculate it, formula

    asked by KL
  126. Geometry

    A flush tank on a toliet is rectangular with dimensions of 21 in. by 6.5 in. and contains water to a depth of 12 in. How many gallons of water per flush will be saved if the depth of water is reduced by one third? (231 in^3 per gallon.)

    asked by Ben
  127. Math

    You need to line the inside of a tank that is 6 ft. diameter and 40 ft. high. You are going to line only the sides with the lining. How many sq. ft. are needed?

    asked by Greg
  128. Math

    Find the perimeter of a right triangle which has a side 7 in. long and the angle opposite to it measures 37 degrees.

    asked by Timothy
  129. English essay

    I am not very good at writing essays and I am having trouble with my first paragraph of a persuasive essay on smoking. Could you please give me feedback on what i could fix to make it better? thank you! We’ve all seen them, the person that is smoking in

    asked by Ev
  130. Math

    A baseball has a circumfrence of 9 in. You have a rectangular piece of leather that is 24in. x 36in. How many baseball covers can be made from assuming no loss?

    asked by Evan
  131. World Civilizations

    A Hindu society in Southeast Asia that resisted both Buddhism and Islam was

    asked by K
  132. algebra ll

    Divide (42b^3 + 23b^2 + 38b + 49)/ (6b + 5)

    asked by Aaron
  133. calculus

    The volume of the solid obtained by rotating the region enclosed by y=1/x^4 y=0 x=2 x=4 about the line x=−5 can be computed the method of cylindrical shells via an integral The volume is V

    asked by ayee
  134. calculus

    The volume of the solid obtained by rotating the region enclosed by y=x^2 y=2x about the line x=2 can be computed using the method of disks or washers via an integral The volume is V

    asked by ayee
  135. math

    If a serving size is 1/6 and at the end of the night the restaurant has 5 3/8 left how many servings are left?

    asked by Monique
  136. calculus

    The volume of the solid obtained by rotating the region enclosed by y=x^2 y=2x about the line x=2 can be computed using the method of disks or washers via an integral The volume is V

    asked by ayee
  137. calculus

    Find the volume of the solid obtained by rotating the region bounded by y=5x+25 and y=0 about the y-axis.

    asked by ayee
  138. math

    find the 15th term of the sequence -9,27,-81............

    asked by reema
  139. english

    Training for the upcoming ten-mile marathon, Lizette includes more protein and complex carbohydrates in her diet

    asked by Anonymous
  140. Algebra

    f(x)=1/4 (x+7)^2+7 f(-7)=7 min or max? How does graph open up, bottom or topside?

    asked by Susan
  141. Math - patterns

    what's the pattern for 2,3,__, 7, 11, 13, 17

    asked by Jen
  142. math

    Simplify the following expression. (n-1)!/n!

    asked by Nick
  143. math

    if an 20ft ladder is leaned against a building and the bottom of the ladder forms a 30 degree angle with the ground how far up will the ladder reach

    asked by shon
  144. Math

    Write the term of the binomial series. Simplify. a. The term with b^5 in (a-b)^9 b. The seventh term of (x^1/2 + x^-1/2)^8

    asked by Trevor
  145. calculus

    help!! please ...Find the volume of the solid obtained by rotating the region bounded by y=5x+25 y=0about the y-axis

    asked by carlton
  146. bio

    Orange juice is often touted by nutritionists as being an excellent antioxidant. Within an essay response, discuss the following concepts: an antioxidant’s function, free radicals and their effect on the human body, sources of vitamin C, optimal delivery

    asked by Dave
  147. bio

    Would you agree that it is valuable for a nation to have a citizenry that is reasonably well versed in science? Give reasons for your answer. Would you say this need has become especially urgent in the last two decades? Why or why not? Evaluate

    asked by Dave
  148. gov.

    An economic system must provide the answer(s) to what question(s)?

    asked by Anonymous
  149. algebra

    Write the equation for a parabola with vertex ( -2, 3) and focus ( -2, 1

    asked by jenny
  150. algebra

    Write an equation for a parabola with vertex at (3, -6) and focus at (3, -4)

    asked by jenny
  151. Need help

    Add. 7.7+ 7.88+ 7.37 Multiply. 1000*4.587 Divide. 5.94 / 100

    asked by Faye
  152. Math

    Divide. 7/1.61 Multiply. 41.6 X 0.49 Divide 6.4/73.6

    asked by My Help Pls1
  153. math

    In 1992, life expectancy of males in a certain country was 72.7 years. In 1999 it was 76.5 years. E represent the life expectancy in year 1 and t represent the number of years since 1992. E(t)= [ ]+ [ ] round to nearest tenth E(13)= [ ]round to neareast

    asked by plz help
  154. math

    Quest 1: Tammy ran three times last week. Here are the distances she ran (in kilometers). 3 , 10.91 ,6.1 What is the total distance Tammy ran on these three days? Quest : 2 Kareem needs to drive 20 miles to work. So far, he has driven 6.3 miles. How many

    asked by My Help Pls2
  155. math

    Estimate 2,835 + 11,496 + 4,937 by first rounding each number to the nearest thousand.

    asked by faye
  156. math

    For what values of n will n! be exactly divisible by 7?

    asked by Cathy
  157. Word problem

    Sung has 22 carnival ride tickets and it takes 3 tickets to ride the roller coaster. How many times can he ride the coaster? How many tickets will he have left over? Number of times he can ride the coaster? Number of tickets left over ?

    asked by Sean La
  158. physics

    A 5.0-g CD with a radius of 6.0 cm rotates with an angular speed of 20 rad/s. What is its kinetic energy?

    asked by Anonymous
  159. physics

    A 5.0-g CD with a radius of 6.0 cm rotates with an angular speed of 20 rad/s. What is its kinetic energy?

    asked by Anonymous
  160. physics

    Suppose a player is practicing kicking a soccer ball at a wall. The ball has a mass of 5kg and is kicked at a rate of 11m/s in 2 sec. AT what force does the ball hit the wall

    asked by Anonymous