Questions Asked on
December 4, 2011

  1. Chemistry

    1)How many protons and electrons are in a sulfate ion SO4^2- ? I know the answer is 48 protons and 50 electrons but i do not know how to get this from the ion. 2) What is the charge on a sulfide ion? The answer is -2 but im not sure why. Is sulfide always

    asked by Hannah
  2. chemistry

    Write a net ionic equation to show that ascorbic acid, H2C6H6O6, behaves as an acid in water. Consider only its first ionization

    asked by Seep
  3. 6th grade math

    In general, the air temperature decreases 12F for every 4000 feet increase in altitude. If a hiker climbs 3000 feet, by how much can she expect the temperature to decrease?

    asked by Kate
  4. physics

    I do not understand the answer that was given to me on a post dated Nov. 23. Please help explain my questions that appear at the end of this post. Bart ------------------- Posted by Bart on Wednesday, November 23, 2011 at 6:52am. A baseball is hit with a

    asked by Bart
  5. math

    A factory produces bicycles at a rate of 80+0.3t^2−1.1t bicycles per week (t in weeks). How many bicycles were produced from day 15 to 21?

    asked by saud
  6. Alg2

    How many ways can six different books be arranged on a shelf if one of the books is a dictionary and it must be on an end?

    asked by Rock
  7. Physics

    A bowling ball of mass M and radius R is thrown along a level surface so that initially ( t= 0) it slides with a linear speed but does not rotate, see the figure. As it slides, it begins to spin, and eventually rolls without slipping. How far has the ball

    asked by Helen
  8. calculus

    1. A rectangle has a constant area of 200 square meters and its length L is increasing at the rate of 4 meters per second. a. Find the width W at the instant the width is decreasing at the rate of .4 meters per second. b. At what rate is the diagonal D of

    asked by fareha
  9. AP Chemistry

    The solubility of solid Ce(IO3)3 in a 0.20 M KIO3 solution is 4.4 10-8 mol/L. Calculate Ksp.

    asked by Bill
  10. chemistry

    A gaseous mixture containing 5 moles of H2 and 7 moles of Br2 reacts to form HBr. Write a balanced chemical equation. Which reactant is limiting? What is the theoretical yield in moles? What is the theoretical yield for this reaction in grams? How many

    asked by Zoe
  11. chemistry

    Calculate the volume of natural gas (methane) required to bring 2.6 L of water to a boil. Assume the initial temperature of the water is 21 C, and the methane is at 1 bar and 25 C. Assume that methane is an ideal gas, the specific heat capacity of water to

    asked by Katie
  12. chemistry

    One of the steps in the Ostwald process for the production of nitric acid involves oxidation of ammonia. 4NH3 (aq) + 5O2 (g) 4NO (g) + 6H2O (g), Delta H= -905kJ a) State the reaction conditions that favour the production of nitrogen monoxide. b) A

    asked by Ahmed
  13. Chemistry

    A balloon is floating around outside your window. The temperature outside is 39 degree celsius, and the air pressure is 0.800atm . Your neighbor, who released the balloon, tells you that he filled it with 3.10 moles of gas. What is the volume of gas inside

    asked by Mary
  14. AP Chem

    The Ksp for silver sulfate (Ag2SO4) is 1.2 10-5. Calculate the solubility of silver sulfate in each of the following. 0.30 M K2SO4

    asked by Bill
  15. physics

    A 10.9-kg monkey climbs a uniform ladder with weight w = 1.24 102 N and length L = 2.70 m as shown in the figure below. The ladder rests against the wall and makes an angle of θ = 60.0° with the ground. The upper and lower ends of the ladder rest on

    asked by Anonymous
  16. Physics

    A child of mass 40 kg stands beside a circular platform of mass 100 kg and radius 1.8 m spinning at 2.6 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed; rad/s b) She then walks to the center and stay there.

    asked by John
  17. Physics

    A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26 cm, and initially not rotating, slips down a spindle and lands on the turntable.

    asked by John
  18. Alg2

    Help w/Word Prob: LAW ENFORCEMENT A police accident investigator can use the formula s=2√5l to estimate the speed=s of a car in miles per hour based on the length=l in feet of the skid marks it left. How fast was a car traveling that left skid marks 120

    asked by Rock
  19. algebra

    three times a first number decreased by a second number is 25. the first number increased by four times the second number is -22. find the numbers

    asked by Anonymous
  20. physics

    An open railroad car of mass 2449 kg is coasting with an initial speed of 17 m/s on a frictionless, horizontal track. It is raining, and water begins to accumulate in the car. After some time, it is found that the speed of the car is only 10 m/s. How much

    asked by glenmore
  21. Physics

    A circular disk of mass 0.3 kg and radius 40 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7 kg and the same radius, rotating freely at 3.1 rad/s. a) Find the new angular velocity of the combination; A circular

    asked by John
  22. physics

    A roller coaster car speeds down a hill past point A and then rolls up a hill past hill B.The car has a speed of 16.9 m/s at point A. THe acceleration of gravity is 9.81 m/s^2.If at point A the track exerts a force on the car that is 2.45*10^4 N greater

    asked by Jake
  23. Physics

    A light spring of constant k = 158 N/m rests vertically on the bottom of a large beaker of water (Fig. P9.34a). A 5.55 kg block of wood (density = 650 kg/m3) is connected to the spring and the mass-spring system is allowed to come to static equilibrium

    asked by Arianna
  24. physics

    A block of mass 0.433kg is hung from a vertical spring and allow it to reach equilibrium rest. As a result the spring is stretched by 0.603m. Find the spring constant.

    asked by briana wiliams
  25. physic

    A hockey player strikes a puck that is initially at rest. The force exerted by the stick on the puck is 950 N, and the stick is in contact with the puck for 4.4 ms (0.0044 s). (a) Find the impulse imparted by the stick to the puck. (b) What is the speed of

    asked by glenmore
  26. geometry

    quadrilateral ABCD has right angles at B and D. If ABCD is kite-shaped with AB=AD=20 and BC=CD=15, find the radius of the circle inscribed in ABCD.

    asked by Hanna
  27. physics

    you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 80 steps per minute, with each step 8.00 inches high. If you weigh 150 lb and the machine reports that 690 kcal have been burned at the end of the workout, what efficiency is the

    asked by Shawn
  28. Physics

    A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26 cm, and initially not rotating, slips down a spindle and lands on the turntable. a) Find the new angular speed. b) what is the

    asked by John
  29. Physics

    What is the energy released in the fusion reaction: 2H+2H--> 4He + Q? How do I calculate this?

    asked by Mariana
  30. Physics

    A 650 N student stands on a scale in an elevator. As the elevator starts to move, the scale reads 780 N. a. Find tha acceleration. b. Is the elevator going up or down?

    asked by Tomomi
  31. calculus

    1. Let y = f(x) be the continuous function that satisfies the equation x^4-5x^2y^2+4y^4=0 and whose graph contains the points (2, 1) and (-2, -2). Let l be the line tangent to the graph of f at x = 2. a. Find an expression for y’ b. Write an equation for

    asked by fareha
  32. physiology

    True or False The secretion of GnRH, FSH, and LH are pulsatile instead of continuous?

    asked by becca
  33. physics

    An insulated Thermos contains 140 cm3 of hot coffee at 89.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium is reached? Treat the

    asked by mar13
  34. Math

    Someone verify if this is correct, please! 1. Draw a distance versus time graph that corresponds to the walk described below. Adam starts 8 m away from the motion sensor and walks in a straight line toward the sensor at a constant rate of 0.5 m/s for 3 s.

    asked by Melinda
  35. Math Probability

    A lottery game has balls numbered from 0 - 9 If a ball is selected at random, what is the probability of selecting an even numbered ball or a 5 ? I am guessing this is Mutually exclusive event and hence used the OR= P(A)+P(B) concept considering 0 as an

    asked by HM
  36. chemistry

    For which salt in each of the following groups will the solubility depend on pH? Pb(OH)2 PbCl2 could you explain too? thanks!

    asked by clay
  37. Physics

    An iron ion contains 26 protons, 27 neutrons, and 23 electrons. What is the net charge of the ion?

    asked by David
  38. AP Chemistry

    Will a precipitate form when 100.0 mL of a 7.5 10-4 M Mg(NO3)2 is added to 100.0 mL of 5.8 10-4 M NaOH? (Hint: Ksp for Mg(OH)2 = 8.9 10-12) Give the value of Q, to support your answer.

    asked by Bill
  39. AP Chemistry

    A solution is prepared by mixing 50.0 mL of 0.17 M Pb(NO3)2 with 50.0 mL of 1.6 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6X 10-5.

    asked by Bill
  40. Finance

    A court has ordered Security Enterprises to pay 200000 in two years and 500000 in five years. In order to meet this important liability, they wish to invest in a combination of two-year 10% par-value bonds with annual coupons and five-year zero-coupon

    asked by Jack
  41. calculus

    6. A trough is in the shape of a triangular prism. It is 5 feet long and its vertical cross sections are isosceles triangles with base 2 feet and height 3 feet. Water is being siphoned out of the trough at the rate of 2 cubic feet per minute. At any time

    asked by fareha
  42. physics

    A puck of mass 80.0 g and radius 4.10 cm slides along an air table at a speed of 1.50 m/s as shown in the figure below. It makes a glancing collision with a second puck of radius 6.00 cm and mass 130.0 g (initially at rest) such that their rims just touch.

    asked by Anonymous
  43. physics

    Water flows through a horizontal tube of diameter 2.9cm that is joined to a second horizontal tube of diameter 1.5 cm. The pressure difference between the tubes is 7.2 kPa. A)Find the speed of flow in the first tube.

    asked by jazz
  44. Critical Thinking Quiz phi 103

    Surveys show that people who use calorie information to decide which foods to eat consume on average 100 calories less than they would if they didn’t check calorie information before eating. Strangely though, people who use calorie information in this

    asked by Anonymous
  45. Physics

    An 893 kg car passes over a bump in a road that follows the arc of a circle of radius 14.3 meters. A) What force does the road exert on the car as the car passes the highest point of the bump if the car travels 7.53 m/s. B) What is the max speed the car

    asked by Ryan
  46. physics

    A triangular plate with a non-uniform areal density has a mass M=0.700 kg. It is suspended by a pivot at P and can oscillate as indicated below. Its center of mass is a distance d=0.200 m from the pivot axis and its moment of inertia about an axis through

    asked by liv
  47. chemistry

    Rubidium crystalizes in the body centred cubic structure with an edge length of 560.5 pm.. a. calculate the radius (in pm) to 4 sig figures. b. calculate the density to 4 sig.fgures. thnks guys..

    asked by amanda
  48. biology

    Ectothermic organisms have body temperatures that vary with the temperature of their surroundings. Discuss the effect this variation might have on the functioning of enzymes in these organisms. Suggest some ways ectothermic organisms might cope with this

    asked by John
  49. Physics

    Calculate (in MeV ) the total binding energy for 40 Ca.

    asked by Paige
  50. Math

    The following table represents the diameter of the cross section of a wire at continuous heights (feet) above the ground. Assume that each cross section is circular. Height(ft) 2 6 10 14 18 22 26 30 Diameter 2 2 2.0 1.8 1.6 1.5 1.3 1.2 (feet) (those should

    asked by Paige
  51. Physics

    The mass of a certain neutron star is 5 × 10^30kg (2.5 solar masses) and its radius is 2000 m. What is the acceleration of gravity at the surface of this condensed, burned-out star? The value of the universal gravitational constant is 6.67 ×

    asked by Amanda and Leah
  52. physics

    a man applies a force of 220 N horizontally to the right against a 50 kg crate. the force of friction between the crate and the floor is 200 N. if the crate is pushed 2.0 m, the work done is.... What formula would be applicable?

    asked by Connor
  53. Physics

    Calculate (in MeV ) the total binding energy for 40 Ca.

    asked by Paige
  54. physics

    A puck of mass 80.0 g and radius 4.10 cm slides along an air table at a speed of 1.50 m/s as shown in the figure below. It makes a glancing collision with a second puck of radius 6.00 cm and mass 130.0 g (initially at rest) such that their rims just touch.

    asked by Anonymous
  55. chemistry

    For which salt in each of the following groups will the solubility depend on pH? Pb(OH)2 PbCl2

    asked by william
  56. AP Chemistry

    How much work is done by the system when 2.00 moles of O2 expand from a volume of 3.00 liters to a volume of 8.5 liters against a constant external pressure of 0.0100 atm? Answer in units of J.

    asked by Ashlyn
  57. Physics

    How can one find the magnitude and the directions of a resultant if Vector A is 35N @ 60' NE, and Vector B is 50N @ 20' NW?

    asked by Megan
  58. Physics

    What minimum strength of magnetic field is required to balance the gravitational force on a proton moving at speed 6*10^6 m/s?

    asked by Richard
  59. Physics

    A researcher observes hydrogen emitting photons of energy 10.2 eV. What are the quantum numbers of the two states involved in the transition that emits these photons?

    asked by Paige
  60. chemistry

    a metal crystallizes in the face centered cubic crystal structure with a unit cell edge of 5.48 x10 power of -8 cm. the density of the metal is 6.90 g per cubic cm. a. what is the mass (g) of a single atom of this element. b. what is the atomic weight of

    asked by amanda
  61. Algebra 1 (HELP PLEASE!!)

    A bakery makes bread in batches. Several loaves per batch are rejected due to defects. Your friend says that the total number of defective loaves is the independent variable. Explain and correct the error.

    asked by Mercedez
  62. calculus

    1. A rectangle has a constant area of 200 square meters and its length L is increasing at the rate of 4 meters per second. a. Find the width W at the instant the width is decreasing at the rate of .4 meters per second. b. At what rate is the diagonal D of

    asked by Fareha
  63. chemistry

    thank you for any help possible. Given a Mass Percent 13.3% and a Mass Solvent of 325.2 g, find Mass of Solute and Mass of Solution. Mass%=13.3% Mass solvent= 325.2g solve for the Mass solute and Mass solution. This is all the information I am given.

    asked by ben 16
  64. USA PoliScience

    On average, women earn about _____ as much as men. a. one-fourth b. one-half c. two-thirds d. three-fourths e. nine-tenths I have looked all over.. My educated guess would be 1/4

    asked by HM
  65. geometry

    Gerrad is a painter. he is using a canvas that is in the shape of a regular hexagon. The perimeter of the canvas is 78 in. The perpendicular distance from a side to the center is 11 in. to the nearest inch. Based on these measurements, what is area of the

    asked by Cj
  66. chemistry

    For which salt in each of the following groups will the solubility depend on pH? Pb(OH)2 PbCl2 could you explain too? thanks!

    asked by matthieu
  67. USA PoliScience

    The presidency has been a consistently activist office since the administration of a. Andrew Jackson. b. Abraham Lincoln. c. U.S. Grant. d. Franklin Roosevelt. e. Richard Nixon. I know for sure it is not Andrew Jackson .. My guess would be.. Roosevelt ?

    asked by HM
  68. Calculus

    When a particle is located a distance x meters from the origin, a force of cos(x/4) newtons acts on it. How much work W is done in moving the particle from x = 1 to x = 3?

    asked by Ethan
  69. physics

    the momentum of 900kg car initially moving north at 10m/s increases by 10,800. calculate the final velocity of the car.

    asked by gem
  70. calculas

    A car braked at a constant deceleration of 45 ft / s2, producing a skid mark measuring 105 feet before coming to a stop. How fast was the car travelling when the brakes were first applied?

    asked by jordan
  71. physics

    A puck of mass 80.0 g and radius 4.10 cm slides along an air table at a speed of 1.50 m/s as shown in the figure below. It makes a glancing collision with a second puck of radius 6.00 cm and mass 130.0 g (initially at rest) such that their rims just touch.

    asked by Anonymous
  72. chemistry

    hi need help for these questions a. which of the ions Cs+, Sr 2+, Ba 2+, will have the largest heat of hydration?which is the smallest? b. of the two compounds NaF and MgF2,which has the strongest intermolecular forces? c. of the two compounds NaNO3 and

    asked by amanda
  73. Physics

    A bowling ball of mass M and radius R is thrown along a level surface so that initially ( t= 0) it slides with a linear speed but does not rotate, see the figure. As it slides, it begins to spin, and eventually rolls without slipping. How far has the ball

    asked by Helen
  74. Calculus

    A spring has a natural length of 24 cm. If a 27-N force is required to keep it stretched to a length of 30 cm, how much work W is required to stretch it from 24 cm to 27 cm? (Round your answer to two decimal places.)

    asked by Courtney
  75. physics

    An insulated Thermos contains 140 cm3 of hot coffee at 89.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium is reached? Treat the

    asked by mar13
  76. physics

    On an air track, a 403.0 glider moving to the right at 2.30 collides elastically with a 501.0 glider moving in the opposite direction at 3.00 .Find the velocity of first glider after the collision

    asked by Lindsay
  77. Math

    The following table represents the diameter of the cross section of a wire at continuous heights (feet) above the ground. Assume that each cross section is circular. Height(ft) 2 6 10 14 18 22 26 30 Diameter 2 2 2.0 1.8 1.6 1.5 1.3 1.2 (feet) (those should

    asked by Paige
  78. Calculus

    If 27 J of work are needed to stretch a spring from 18 cm to 24 cm and 45 J are needed to stretch it from 24 cm to 30 cm, what is the natural length of the spring?

    asked by Alan
  79. PROOF-READ MY PARAGRAPH

    The first right given to every American citizen at birth is the right to freedom of speech and religion. Therefore, anyone would be able to choose which religion to endorse. Religions such as Christianity, Catholicism, Islamic and Judaism can have major

    asked by student
  80. Texas Government

    Which of the following are "swing states"? a. Those that may vote Republican or Democratic b. States that joined the Union after 1870 c. Large states d. Small states e. New England A ?

    asked by HM
  81. Chemistry(Please help)

    1)How many protons and electrons are in a sulfate ion SO4^2- ? I know the answer is 48 protons and 50 electrons but i do not know how to get this from the ion. 2) What is the charge on a sulfide ion? The answer is -2 but im not sure why. Is sulfide always

    asked by Hannah
  82. Math

    I need help with this question, it says to find the instantaneous rate at distance t = 6s with the given graph First of all, it is a linear line, do i need to find the equation of the graph? After finding the equation, i plug in 5.99 and 6.01? and solve ?

    asked by Melinda
  83. chemistry

    Calculate the heat transferred when a 8 g of iron nail is cooled from 50oC to 18oC. The specific heat of iron is 0.45 J/goC.

    asked by Dana
  84. physics

    a rod supports a 2.35 kg lamp. a)what is the magnitude of the tension in the rod? b)calculate the components of the force that the bracket exerts on the rod.

    asked by jessica
  85. physics

    A rubber ball (mass 0.21 kg) is dropped from a height of 1.7 m onto the floor. Just after bouncing from the floor, the ball has a speed of 3.6 m/s. (a) What is the magnitude and direction of the impulse imparted by the floor to the ball? Magnitude?

    asked by glenmore
  86. physics

    Two objects of mass m1 = m and m2 = 4m undergo a completely inelastic collision in one dimension. If the two objects are at rest after the collision, what was the ratio of their speeds before the collision? v1/v2=

    asked by glenmore
  87. Chemistry

    1) How many miles are covered in a 15km race? (1 mile=5280, 12 in=1 ft, 1in=2.54cm) I know that I have to convert but I do not know where to start. 2) Silver (107.87amu) has two naturally occuring isotopes. In a typical sample, 51.84%of silver exists as

    asked by Hannah
  88. Math

    There were 93 students going to a nature camp. After equal groups of fewer than10 students , were formed for hiking, 2 students were left over . How many equal groups were formed?

    asked by Paul
  89. Thermochemistry

    The standard enthalpy of formation of n-octane is -249.95 kJ/mol. Compute the amount of heat liberated when 5.24 g of n-octane is burned completely with excess oxygen to form carbon dioxide and liquid water.

    asked by LaurenB
  90. statistics

    A spinner has equal regions numbered 1 through 21. What is the probability that the spinner will stop on an even number or a multiple of 3? (Points : 5)

    asked by Anonymous
  91. Health

    1. What is needed to make blood cells? 2. What pair of workers is needed to produce estrogen? 3. What is needed to produce eleven hormones that control the actions of other endocrine glands? 4. What is needed to pass oxygen from lungs into blood vessels

    asked by Hayley
  92. math/117

    Jack usually mowes his lawn in 7 hours. Marilyn can mow the same yard in 4 hours. How musch time would it take for them to mow the lawn together?

    asked by Angela
  93. Physics

    A force of 15 N is applied at an angle of 30 degrees with the horizontal on a 0.75 block at rest on a frictionless surface. a. What is the magnitude of the resulting acceleration of the block? b. What is the magnitude of the normal force?

    asked by Tomomi
  94. math

    The ratio of the length of a rectangular field to its width is 10:7. If the width of the field is 70 meters, find the perimeter of the field

    asked by danielle
  95. Texas Government

    Which of these was NOT a major factor in the emergence of a two-party system in Texas? a. The Shivercrats b. The civil rights movement c. In-migration d. Failure of the New Deal e. Support among minorities for liberal policies I would say In-migration

    asked by HM
  96. interm. algebra

    3e^-5x=48 solve

    asked by nick
  97. Physics

    Two men pushing a stalled car generate a net force of +655 N for 8.3 s. What is the final momentum of the car?

    asked by Haile
  98. chemistry

    What is the mass pecent of an aqueous sodium hydroxide in which the mole fraction of NaOH is 0.162? The density of the solution is 1.3311 g/ mL

    asked by Allison
  99. algebra 1

    Marcia is 3 times as old as Kate. The difference between their ages is 12 years. Find the age of each.

    asked by kit kat
  100. Science

    Is there any science fair contests I can partcipate??? I found this topic in gr 5th and I really want to use it for my science fair project this year but we don't have it at my school so I want to use it for a contest.

    asked by Laruen
  101. simple physics

    A 1500 kg car travels along the road at 25 m/s when the driver sees the light turn red and applies the brakes. What average force is needed to stop the car in a) 5 seconds and b) .2 seconds? What formula should be used?

    asked by JuJu
  102. Chemistry

    1) what mass of oxygen will react with 2.64g of magnesium? 2Mg + O2 -> MgO I was going to do 2.64g * (1/2) from the equation but im not sure. Do I have to add a 2 in front of the MgO? 2) How many moles of sodium ions are present in 2.50 L of 0.300 M

    asked by Hannah
  103. english

    Am doing Autism and I have to give farther information. Thanks The cognitive part: I have...(1) Selecting attention, I have they absorve things..(2) Concrete processing, i don't have anything for this one. (3) Rote memory: I putted recalling.

    asked by Jessica
  104. Chemistry

    How many moles of hydrogen gas will be produced when the 0.03 g of magnesium reacts with excess hydrochloric acid?

    asked by Brandy
  105. chemistry

    a metal crystallizes in the face centred cubic cubic crustal structure with a unit cell edge of 5.48 x10 power of -8 cm.the density of the metal is 6.90g per cubic cm. a. what is the mass in grams, of a single atom of this element. b. what is the atomic

    asked by amanda
  106. precalc

    Write the partial fraction decomposition of the rational expression. 6x^2+1/x^2(x-1)^2

    asked by Robert
  107. math

    PLEASE HELP! Multiply. (3sqrt3-6sqrt2)(4sqrt3+8sqrt2)

    asked by =)
  108. phyics

    Ethyl alcohol has been added to 190 {\rm mL} of water in a container that has a mass of 140 {\rm g} when empty. The resulting container and liquid mixture has a mass of 450 {\rm g}. What volume of alcohol was added to the water? Express your answer using

    asked by please help
  109. English

    Can you tell me if sentence 2 is a mistake? Thank you. I remember going to primary school.. I remember I went to primary school..

    asked by Henry2
  110. calculus

    a light sitting on the ground is shining onto a wall 20 feet away from the light. if a 5 foot person is walking toward the light at 4 ft/sec., how fast is the shadow moving up or down the wall when he is 15 feet from the wall?

    asked by Anonymous
  111. mastering physics

    A square frame is made from four thin rods, each of length and mass Calculate its rotational inertia about the three axes shown in the figure

    asked by omah
  112. Chemistry

    In an esterification reaction, how does one tell when its reached equilibrium? Like what sign could you use to measure the rate at which it gets to equilibrium?

    asked by Lauren
  113. Chemistry

    In an esterification reaction, how does one tell when its reached equilibrium? Like what sign could you use to measure the rate at which it gets to equilibrium?

    asked by Lauren
  114. Chemistry

    A 2.3 g sample of C5H10O is burned completely in excess oxygen to yield CO2(g) and H2O(l) at 25 C, releasing 83.42 kJ of energy. What is the enthalpy of formation of C5H10O?

    asked by Katie
  115. Math

    he current term-structure of spot interest rates for safe zero-coupon bonds is as follows: Maturity, in years Interest rate(r) 1 8% 2 10% 3 11% 4 12% 5 13% There is a safe bond B which has 4 years before maturity and pays a coupon of 12% at regular annual

    asked by Robbie
  116. 7h grade math

    Deminsional analysis 4.25L/h to mL/

    asked by Anonymous
  117. trig

    We are doing trig identities in school. I need help with these five: 1.1+sinx/1-sinx=cscx+1/cscx-1 2.tanx+sinx/1+cosx=tanx 3.sec^2x/sin^2x=1/sin^2x+1/cos^2x 4.tan^2x/1+tan^2x=1-cos^2x 5.sinx-sin^3x/cos^3x=tanx

    asked by Jay
  118. cultural antropology

    Before colonialism, most colonized people lived in general peace and tranquilit static and unchanging cultures a state of balance with nature constant warfare and violence

    asked by carmen
  119. proofread please

    These four religions have some similarities but are very different in their beliefs and their cultural differences to society. Christianity is one of the largest religious groups in politics but and also is the biggest religious group in the world.

    asked by student
  120. MATH

    Consider a population with and . (A) Calculate the z-score for from a sample of size 13. (B) Could this z-score be used in calculating probabilities using Table 3 in Appendix B of the text? Why or why not?

    asked by deandra
  121. Alg2

    For a college application, Macawi must select one of five topics on which to write a short essay. She must also select a different topic from the list for a longer essay. How many ways can she choose the topics for the two essays?

    asked by Rock
  122. grade 7 math

    which expression is equivalent to (n+10)x5

    asked by vito
  123. Physics

    By what distance must two charges of +2 C and +10 C be separated so that the repulsive force between them is 3.70*10^10 N?

    asked by David
  124. Chemistry

    What minimum volume of 3.0 M H2SO4 is required to produced 13 L of H2 at STP? Reaction formula: 2Al(s) + 3H2SO4(aq) --> Al2(SO4)3(aq) + 3H2 (g)

    asked by Diva
  125. English

    Hello. I will really appreciate some help. 1)Would you use the article in the sentence "The UN called on Egypt to end (the) violence and bloodshed"? 2)Is it correct to say: a)the British newspaper Daily Mirror; or is it b)the British newspaper The Daily

    asked by Ilma
  126. math

    a company sells snack-size boxes of raisins with dimensions 5 in. by 2.5 in. by 1.5 in., each weighing 2 oz. They want to make a family-size box that would be 7.5 in. by 3.75 in. by 2.25 in. What would be the weight of the family-size box of raisins?

    asked by danielle
  127. language arts

    Cleanliness what is it? why practice it? how do you practice it? what would it look like if..... reflections: action plan: plz help!!!!!!!!!!!!!

    asked by smiley face
  128. MATH

    Rewrite cos(arcsin(v)) as an algebraic expression in v. i know that the answer is squroot of 1-v^2 but i don't know the process of how to come to this answer. Thanks for the help!

    asked by MISS SUE PLEAE HELP
  129. Basic Communications

    I'm trying to add more details to this paragraph on my assignment: Lastly, Temporary Marriage Licenses are not a good solution to high divorce rates because couples in a boyfriend-girlfriend relationship should look into all the responsibilities that the

    asked by Alex L.
  130. math/117

    FOIL (8x^8-9)(x^9-5)

    asked by Angela
  131. Math

    4x^2-4 radical3x +3=0 Using quadratic formula

    asked by Jose
  132. Stats

    A bag contains 7 blue marbles, 18 red marbles, and 16 orange marbles. Find the chance that neither draws are orange.

    asked by Fay
  133. Chemistry

    Write the equation for the reaction of mixing 2 ml of 3 M (HO)2SO2 with 9 ml of 0.2 M NaClO4

    asked by Anonymous
  134. Texas Government

    Which of the following forms the core of the Republican Party? a. Hispanic Catholics b. Anglo Catholics c. Anglo Protestants d. Anglo Mormons e. Black Protestants Anglo Protestants.

    asked by HM
  135. spanish

    Could someone please read my (corrected) summary in Spanish for grammar and fluidity? The English version appears below for help. Thanks! Spanish: Al principio del cuento, el narrador y su familia de braceros migratorios tenían que mudarse a Fresno porque

    asked by Lisa
  136. Pre-calculus

    I want to make sure this is right. the inverse of f(x)=(-3x+2)/(2x-1) I got f^-1(x)=(x-2)/(2x-3). if its right how do i check the answer to see if it is right. also would the domain of f be D=all real numbers except 1/2. And I do not know how to get the

    asked by nessa
  137. Physics

    A 90 kg person stands on the ground before jumping vertically upward. If momentum is truly conserved in all closed isolated systems, then the Earth-person system should conserve momentum. If the person jumps with a speed of 3.5 m/s, what is resulting speed

    asked by JuJu
  138. Proof read please hw help

    Religion plays a big part in people's daily life. The Christian and Catholic religion beliefs going to conformation, regular church services, Sunday school, and other church events. Members may also pray throughout the day at times such as before meals and

    asked by student
  139. physics

    Consider two cars, one a compact model (m = 781 kg) and the other an SUV (m = 2483 kg). The SUV is traveling at 15 m/s, while the compact car is traveling at an unknown speed v. If the two cars have the same momentum, what is v?

    asked by glenmore
  140. Pre-algebra

    Can you simplify (9x)^-2 = -81x^2

    asked by Sherrie
  141. physics

    A railroad car containing explosive material is initially traveling south at a speed of 4.5 m/s on level ground. The total mass of the car plus explosives is 2.9 104 kg. An accidental spark ignites the explosive, and the car breaks into two pieces, which

    asked by glenmore
  142. United States Government

    Which of the following is not one of the elements for which the United States could be considered the strongest of the economic powers? a. It exports roughly $1 trillion in goods annually. b. It has a wide base of natural resources. c. It has the most

    asked by HM
  143. Rockland Essay Contest

    Is there any essay contests in rockland???? My parents want's me to partcipate in one.

    asked by Laruen
  144. precalc

    Use Sigma Notation to write the sum [10-(1/10)^2]+[10-(2/10)^2]+[10-(3/10)^2]+[10-(4/10)^2]

    asked by Alex
  145. Geometry

    how do you find the orthocenter of a triangle with the vertices A(4,0) B(-2,4) C(0,6)? Please explain to me how you get x after doing point slope form for the two slopes.

    asked by Melanie
  146. AP Chemistry

    This is part of a marathon problem, we have to identify the five compunds of H, N, and O described below. For each compound, I have to write a Lewis structure that is consistent with the information given. a.) All the compunds are electrolytes, although

    asked by Kristin
  147. algebra 1

    The difference of two numbers is 5. Three times the larger, decreased by 5 times the smaller is 7. Find the numbers

    asked by kit kat
  148. Algebra 1

    A bakery makes bread in batches. Several loaves per batch are rejected due to defects. Your friend says that the total number of defective loaves is the independent variable. Explain and correct the error.

    asked by Anon
  149. US history HELP

    Which of the following statements is true? a. Political parties are unimportant in the organization of the U.S. Congress. b. Party-line voting rarely occurs in Congress. c. Party-line voting has increased in recent years. d. Partisanship makes virtually no

    asked by HM
  150. Math equation

    find the slope x+3y=6

    asked by Lavern
  151. Critical Thinking Quiz phi 103

    The average height of members of the high school basketball team is six feet, three inches. Jerry is on the high school basketball team, so Jerry must be taller than six feet. The argument above is flawed because it confuses

    asked by Anonymous
  152. Calculus

    Let f(t) be an odd function Using properties of the definite integral plus simple substitution show that if f is continuous on [−a, a] for a positive number a, then Z a −a f(t) dt = 0

    asked by Rory
  153. Algebra

    40 =15 x x - 20 This is a three part question>> first find the lcd method of solving this equations, and the second ones about cross-multiplying method to solve this equations ,The next question asked would the cross- multiplying method work for all

    asked by JERSEYGIRL
  154. Math

    Revolve the region bounded by y = 4x and y = x^2 about the y-axis. In cubic units, the resulting volume is

    asked by Beth
  155. physics

    Water flows through a horizontal tube of diameter 2.9 cm that is joined to a second horizontal tube of diameter 1.5 cm. The pressure difference between the tubes is 7.2 kPa. Find the speed of flow in the first tube.

    asked by jazz
  156. statistics

    Women’s heights are normally distributed with a mean of 162 cm and standard deviation of 16 cm. a. Define an random variable, X, and describe its full distribution including the mean and variance. b. What percentage of heights are greater than 180 cm ?

    asked by Jasmine
  157. Thermochemistry

    A constant pressure calorimeter having a heat capacity of 60.8 kJ/K is used to measure the energy released from burning a compound in excess oxygen to form CO2(g) and H2O(l). If the enthalpy of combustion of the compound is -2914.0 kJ/mol and the

    asked by LaurenB
  158. Talent Search

    If you don't do talent search in gr 7th can I still do it in gr 8th???? Ok me and my friend are having a problem like she saying that I can't do it this year which I'm not but she said I can't do it next year. Ok that's unfair I'm going to do very well

    asked by Laruen
  159. Math

    State two types of functions that you know that do not have a maximum or a minimum (unless the domain is restricted to some interval) How to do this?

    asked by Jayson
  160. English 12 Essay

    I posted this many times. I just want a list of comments about my essay not criticism (I don't think the things I wrote is wrong. This is what I got from articles. My essay is about the jobs he did and his literary influences. This is my topic of my

    asked by Anoymous
  161. Physics

    Divers dive straight out from a cliff that is 21 m high. If the rocks below the cliff extend outward for 15 m, what is the minimum horizontal velocity a diver must have to clear the rocks safely

    asked by Tim
  162. chemistry

    What is the molarity of OH- in an aqueous solution that is 0.17 M HClO4?

    asked by Ashley
  163. physics

    The density of gold is 1.93×104 {\rm{kg/m}}^{\rm{3}}. 205 {\rm g} of gold is shaped into a cube. whats the length of an edge

    asked by Anonymous
  164. Calculus

    Find the total area bounded by the curves y = x^3 and y = x^5 .

    asked by Beth
  165. chemistry

    How many grams of Sodium chloride are in 53.2 g of solution that is 0.50% by mass sodium chloride?

    asked by Aamnda
  166. science

    what is the difference between science, non-science and psuedoscience?

    asked by Anonymous
  167. Calculus

    If the work required to stretch a spring 1 ft beyond its natural length is 6 ft-lb, how much work is needed to stretch it 6 in. beyond its natural length?

    asked by Ryan
  168. math

    need help for a school math project:adjusting a recipe amounts using fractions

    asked by kris
  169. algebra

    factor completely. remember to look first for a common factor. if a polynomial is prime state this. x^2+2xy+y^2-9

    asked by Anonymous
  170. physics2

    12) The light velocity in certain liquid is 240000 km / s. Beam falls from air on surface of this liquid under angle 30 . Find refraction angle of the beam.

    asked by Anonymous
  171. Physics

    How long would it take a fighter jet to accelerate from 0 to 250m/s if the force from the engine was 180000N and the mass was 10000kg ? please help please

    asked by Anonymous
  172. chemistry

    78.7 mL sample of a 4.81 M sucrose solution is diluted to 120.0 mL. What is the molarity of the diluted soluti?

    asked by Amanda
  173. chemistry

    What is the pH of a solution in which 378 mL of HCL, measured at 27.5 degrees celcius and 1.02 atm, is dissolved in 1.5 mL of aqueous solution?

    asked by Anonymous
  174. math

    If the government finances $184 billion worth of 20 year old bonds at a fixed rate of 1.8% compounded quarterly , how much will it have to pay back when the bonds mature?

    asked by Jess
  175. chemistry

    Identify the conjugate base of the following acids? The names. For example HCl is hydrochloric acid. A) HSO4^- B)H3O^+

    asked by Amanda
  176. economics

    The current term-structure of spot interest rates for safe zero-coupon bonds is as follows: Maturity, in years Interest rate(r) 1 8% 2 10% 3 11% 4 12% 5 13% There is a safe bond B which has 4 years before maturity and pays a coupon of 12% at regular annual

    asked by Robbie
  177. math

    1/(1*3) + 1/(3*5) + 1/(5*7)= 3/7 come up with a formula S(n)

    asked by dale
  178. Economics

    A monopolist is currently producing a level of output where Price = $110; Marginal Revenue = $10; Quantity = 100; Total Cost = $15,000; Marginal Cost = $10; Total Fixed Cost = $4,000. 1. To maximize profits in the short-run, the monopolist should: (a)

    asked by Jim
  179. Physical Science

    How does the mass of all the interstellar matter in our galaxy compare with the total mass of its stars?

    asked by Shirley
  180. algebra

    solve 3^(2x-3)=5*2^(x^2) for x

    asked by anju
  181. Pre-Calculus(Help)

    Partial Fraction of the Rational Expression: x^2+x+8/x^3+x

    asked by Joshua
  182. Chemistry

    General Chemistry 111 11/28/11 Chapter 9 Extra Credit Quiz Name: _____________________________ Section #______________________ Tetrahedral geometry has a bond angle of about 109.5 °. Given that a tetrahedron is made up of 4 equilateral triangles each of

    asked by Olayinka
  183. algebra

    Factor completely. Assume that variables in exponents represent positive integers. x^2a-y^2

    asked by Anonymous
  184. physics

    the final velocity of the car is 22 m/s?

    asked by gem
  185. Government US

    6.1 Development of the Two-party System Political scientists and historians usually focus on a few key elements of Texas's legal-institutional framework, political culture, and political history to explain the development of the two-party system in

    asked by HM
  186. Texas Government

    When you vote in Texas, you are voting by a. county. b. precinct. c. caucus. d. state. e. municipality. I would say county? Correct?

    asked by HM
  187. physics

    1.A 500.0 g mass is placed on a 20.0 cm cube of gelatin. The 500.0 g mass (a 5.00 cm diameter disk) depresses the gelatin 0.243 mm. What is Young's modulus for this gelatin? ____________N/m^2 Later, a 2.00 kg mass disk (5.00 cm in diameter) is placed on

    asked by sand
  188. spanish

    leemos las lecciones completas de puntos de partida?

    asked by hussain
  189. spanish

    Could someone please proofread this summary in Spanish on a short story? The English version is also below. Thank you. Spanish: Al principio del cuento, el narrador y su familia de braceros migratorios tenían que mudarse a Fresno porque la cosecha de

    asked by Lisa
  190. English

    Could you please check these sentences? Thank you. 1) Humanism spread in the whole country. 2) The English Renaissance developed (spread is possible?) later than its European equivalents. 3)Puritans wanted a balance of power between the king and (the?)

    asked by Henry2
  191. Statistics

    For a particular value, this table gives the percent of scores between the mean and the z-value of a normally distributed random variable. What percent of the total population is found between the mean and the z-score, assume z = 2.57. PLEASA HELP!!!!

    asked by rebecca
  192. Math

    An auditorium has 1600 seats. At a ticket price of $6, the owners can sell 1200 tickets. For each 25 cent increase in price the tickets sold reduces by 25. What price should the owners set to maximize the income? Income=(6+.25x)(1200-25x) Generalize and

    asked by Elisabeth
  193. physics

    A 500g ball is dropped into a well that is 10m deep. A)What is the ball's potential energy before it is dropped? Take the bottom of the well to be at zero height. I solved by using PE=mgh and came up with 49J. B) What are the kinetic energy and potential

    asked by Mack
  194. law

    How has the feminist movement influenced criminology? What negative impact has resulted from feminism, if any?

    asked by edwin
  195. math

    James has opted for a 20-payment life insurance policy of $200,000. James is 42 years old. What is his annual premium?

    asked by Anonymous
  196. Physics

    The internal energy of a gas is 900 J. The gas is compressed adiabatically, and its volume decreases by 100 cm3. If the pressure applied on the gas during compression is 1 atm, what is the internal energy of the gas after the adiabatic compression? The

    asked by Mike
  197. chemistry

    Suppose that the following solution is diluted by adding the indicated amount of water. Calculate the new concentration of 225 mL of 3.02 M HCl; 375 mL water added

    asked by Sandra
  198. Physics

    Find the heat that flows in 1 s through a lead brick 18 cm long if the temperature difference between the ends of the brick is 6.8° C. The cross-sectional area of the brick is 14 cm2.

    asked by Anonymous
  199. earth

    Rocks that become hot enough to melt and flow are referred to as ___ by scientists

    asked by james
  200. chemistry

    The electrochemical cell described by the balanced chemical equation has a standard emf (electromotive force) of -4.05 V. Calculate the maximum electrical work (kJ) the cell has done if 6.8500 mol of F2(g) (Molar Mass - 38.00 g/mol) forms. Round your

    asked by j
  201. Economics

    If the government announced the economy is headed into an expansionary period of rising real GDP and prices, businesses would most likely respond by: a. lowering wages so that they could afford to hire more workers b. dismantling some of existing

    asked by Sammy
  202. math

    The ratio of the length of a rectangular field to its width is 10:7. If the width of the field is 70 meters, find the perimeter of the field

    asked by danielle
  203. algebra

    I made a typing error on last post so I thought I would try again . thanks for your help. Use the percent equation to answer the following. solve the percent equation for b. percent equation is a= p% . b i saw in text it set up as cross products a/b =

    asked by ann
  204. cook

    which of the following dishes is an example of cajun cuisine

    asked by Anonymous
  205. pre-algebra

    explain the following:(a+b)^2 =//a^2 +b^2. Give a numerical example to illistrate this please.

    asked by Sherrie
  206. Calculus

    Compute the volume of the solid formed by revolving the fourth quadrant region bounded by y = x^2 - 1 , y = 0, and x = 0 about the line y = 9.

    asked by Beth
  207. math

    what is diam. if circumference is 32"?? what is volume of a football that is 16" circumference at wides part and 21" circumference on length?

    asked by cody
  208. chemistry

    Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 \rm J/(g \cdot {^\circ C}) and 1.00 \rm g/mL] and that no heat is lost to the calorimeter itself, nor to the surroundings.

    asked by Anonymous
  209. Math

    Calculate the number of sides of a regular polygon whose interior angles are each 156 degrees.

    asked by AJ
  210. calculus

    Use the intermediate value theorem to determine whether or not f(x)=x^2+7x-7 and g(x)=4x+21 intersects on [-4,-1]. If applicable, find the point of intersection on the interval.

    asked by arial
  211. Girl Scouts

    Is there any girl scouts in rocland, ny?????

    asked by Laruen
  212. chemistry

    78.7 mL sample of a 4.81 M sucrose solution is diluted to 12.0 mL. What is the molarity of the diluted soluti?

    asked by Aamnda
  213. algebra

    A man has 400 meters of fencing and wants to fence in a rectangular field next to a straight river. Assuming that no fencing is needed along the river, what are the dimensions of the field with the largest possible area?

    asked by Sejul
  214. chemistry

    How many moles of carbon tetrahydride are needed to produce 3.59 moles of water

    asked by William
  215. social studies

    How did changes in the climate affect the lives of early people in Americas?

    asked by Dakota
  216. Pre algebra

    -1/3H < or equal to 7 how is it done? I know signs need to be switched but is there any reciprocating the fraction?

    asked by Nicole
  217. Physics

    If a force of 15.0 N directed east acts on a stationary 5.00 kg mass, what are its acceleration, displacement, and velocity after 10.0 s?

    asked by Tomomi
  218. chemistry

    Identify the conjugate acid of the following bases? what acid is it? A) F^- B) HSO4^- C) CH3COO^- D) CO3^2-

    asked by Amanda
  219. Math

    Multiply (b+1/3)(b+1/5)

    asked by Angela
  220. calculus(differentian)

    x=(6-2y²)/(1+y) differentiate with respect to y I saw this in a question here but..I don't get how the person go that answer.

    asked by Yoona
  221. English

    I urgently need to check sentence number 1. Thank you. 1) She seems like a man, more than her husband, surely. She is more of a man than her husband.

    asked by Henry2
  222. math

    4. If the rule (x, y) ¡ú (x + 3, y ¨C 3) is applied to the original triangle, give the coordinates of and draw the image. Show your work (show the computation) for calculating the coordinates of the resulting image. Label the vertices correctly.

    asked by Kaity
  223. Algebra

    Solve the equation: x^-2 -7x^-1 +12 = 0

    asked by ty
  224. Stats

    a die is rolled three times. find the chance that not all the rolls show 3 or more spots

    asked by Fay
  225. algebra

    x^3y^2+512y^2

    asked by marie
  226. Texas Government

    In which month are most local elections held in Texas? a. May b. November c. March d. July e. September I am confused between March and November.. half of the articles say march and half say november

    asked by HM
  227. Chemistry

    Suppose 33.5 g of ClF3(g) and 29.1 g of Li(s) are mixed and allowed to react at atmospheric pressure and 25 C until one of the reactants is used up, producing LiCl(s) and LiF(s). Using the NIST value for the enthalpy of formation of ClF3

    asked by Katie
  228. Math

    Dale sent Sasha a 2 II2-pound box of candy. Sasha's little sister ate I;4 of the candy. Sasha's pet poodle ate 1/8 of the original amount. Ifno one else has eaten any candy, how much candy does Sasha have left?

    asked by Lulu
  229. english

    How can you have Motivation, Forecast and Orientation in speech intorduction? like show the audience pictures etc?..thanks!

    asked by Jessica
  230. 7th grade mayh

    Dimensional analysis 4.25L/h to mL/h

    asked by Anonymous
  231. Math equation

    solve using the addition and multiplication principle 5x+2-4 less than or equal to 13

    asked by Lavern
  232. Texas Government

    Who elects the Speaker of the House of Representatives? a. The majority whip b. The majority party in the House c. The national chair of the majority party d. The president e. The vice president Is it going to be A or B ? I am confused.

    asked by HM
  233. geometry

    in a traingle ABC three sides is given 6cm, 5cm and 5.6cm is given, what will be the length of a perpendicular drawn on the side BC with A as vertex

    asked by Savyasachi Banerji
  234. math

    What are all the square roots of 100/9

    asked by mandy
  235. math

    Q:The table below shows a distribution and the observed frequencies of the values of a variable from a simple random sample of a population. Perform a chi-square goodness-of-fit test, at the specified significance level, to decide whether the distribution

    asked by destiny
  236. Math

    Rewrite cos(arcsin(v)) as an algebraic expression in v. i know that the answer is squroot of 1-v^2 but i don't know the process of how to come to this answer. Thanks for the help!

    asked by Bob
  237. Alg2

    I need more help

    asked by Rock
  238. 8th grade math

    if a person is 6 feet tall and casts a 9 foot shadow, how tall would the shadow of a 100 foot tall tree be?

    asked by liz
  239. Thunderstorms

    Can you suffer from memory-loss if you get hit by a lightning bolt?

    asked by Shay
  240. science

    what is the difference between exhaled and inhaled air ( in respect to Molar Mass)?

    asked by anonymouse
  241. Physics

    A 500g ball is dropped into a well that is 10m deep. A)What is the ball's potential energy before it is dropped? Take the bottom of the well to be at zero height. I solved by using PE=mgh and came up with 49J. B) What are the kinetic energy and potential

    asked by Mack
  242. Geometry

    A toddler’s playground has two slides on either side. The slide on the left is situated at a 45° angle to the ground and is 68 centimeters away from the base of the playground. The slide on the right is positioned at a 30° angle to the ground and is

    asked by Silvia
  243. Bronchitis

    Could some please tell me what is bronchitis?

    asked by Paris
  244. geometry

    Which composition would produce an image triangle whose area is not equal to the area of the original triangle?

    asked by jen
  245. statistics

    From the Arizona Department of Weights and Measures: Among 31 inspections sat a NAPA Auto Parts store, 88% failed. X= ?

    asked by Katrina
  246. the portuguese man of war

    How long has the potuguese man of war been around? How long does it live? Does it have a ruler or queen like in an ant colony?

    asked by Anjali
  247. Calculus

    Calculate the derivative.? d/dx ∫ from √x to x^2 tan9tdt = Use symbolic notation and fractions where needed.

    asked by saud
  248. world history

    What were some political changes and continuities in western europe between 600-1750

    asked by Anonymous
  249. satistics

    3.Give the mean for the mean column of the Worksheet. Is this estimate centered about the parameter of interest (the parameter of interest is the answer for the mean in question 2)? Mean 3.50 Standard deviation 1.317 4.Give the mean for the median column

    asked by charlene
  250. calculus

    Being some distance from a mountain a man looks up at a 9 degree angle to see the top of the moutain. he then moves 13 miles away from the mountains at looks up at a 3.5 degree angle to see the top of the mountain. How tall is the mountain?

    asked by john
  251. accounting

    The following information relates to Vice Versa Ventures for calendar year 20XX, the company’s first year of operations: Units produced 20,000 Units sold 17,000 Selling price per unit $35 Direct material per unit $5 Direct labor per unit $5 Variable

    asked by ellyssa
  252. chemistry

    write the equation for the reaction of mixing 4 ml of 3 M (ho)2so2 with 7 ml of 0.2 M naclo4

    asked by Anonymous
  253. Government US

    Campaign spending tends to be greatly more important a. for challengers and non-incumbents rather than incumbents. b. for Republican candidates. c. for Democratic candidates. d. for candidates in urban areas than for candidates in rural areas. e. for men

    asked by HM
  254. math

    can you please try to help me understand this? Q:The table below shows a distribution and the observed frequencies of the values of a variable from a simple random sample of a population. Perform a chi-square goodness-of-fit test, at the specified

    asked by destiny
  255. English

    I left out 2 sentences. Can you help me check it? Thank you. 1) She is not the complement to her husband,but (?) rather the driving force behind her husband. In spite of the fact that we tried to save him, he died.

    asked by Henry2
  256. law

    What are the policy implications of social development theories? How have these implications been reflected in actual policy, if at all?

    asked by edwin
  257. Alg2

    I need help with problem solving...

    asked by Rock
  258. algebra

    This is a project called guess your card. there are 3 people playing and you. We are drawing only numbers from 1 to 9. Each person draws 3 cards and puts them on their foreheads facing out. 1 has a 1,3,7 next person has 3,4,7 and 3rd person has 4,6,8. What

    asked by Sean
  259. algebra 1

    the perimeter of a rectangle is 68cm. the length is 2cm less than 3 times the width. find the length and width.

    asked by kit kat
  260. philosophy

    What argument Williams offer in defense of a physical criterion of personal identity that Parfit critiques. did whether Parfit succeeds in answering Williams.

    asked by mas
  261. phi 103

    Which of the following may not qualify as a falsifiable claim?

    asked by josh
  262. Physics

    How can one find the magnitude and the directions of a resultant if Vector A is 35N @ 60' NE, and Vector B is 50N @ 20' NW?

    asked by Megan
  263. science

    a 500kg remote control car traveled 10 meters down the street in 5 seconds. What is the toy car's momentum?

    asked by Anonymous
  264. physics

    A 90 kg mover climbs a ladder to a height of 8 m in 32 s. Find the power ratingof the mover. I solved by using P= mgh/t and came up with 220.5 watts. Is this correct or am I suppose to use P=w/t?

    asked by Mack
  265. statistics

    Can deciles be found on graphing calculators? ti 83

    asked by HM
  266. Math

    Find the arc length of y = x^4 from the origin to (1, 1). Answer in length units, correct to two decimal places, please.

    asked by Beth
  267. science-biology

    . Explain the biological logic of administering anti-Rh antibodies to Rh- mothers immediately after they give birth to an Rh+ baby?

    asked by israa
  268. Math

    3 ç (x - 2)11 dx = 1

    asked by Beth
  269. math equation

    you have a score of 97, 100, 98, you must make 360 to get an A what score on the next text will get you an A.

    asked by Lavern
  270. statistics help please

    The proportion of Canadians who eat breakfast regularly is 0.9. A simple random sample of 144 Canadians is taken. a. What is the probability that between 0.85 and 0.875 of the sample eat breakfast regularly? b. What is the probability that at least 0.945

    asked by Jasmine
  271. Algebra

    1. How do we find the greatest common factor of a polynomial? Demonstrate the process with an example, showing your work. 2.When finding the greatest common factor of a polynomial, can it ever be larger than the smallest coefficient? 3. Can it ever be

    asked by JERSEYGIRL
  272. epidemiology

    What are some global health issues related to mexico?

    asked by maria
  273. Chemistry

    Write the equation for the reaction of mixing 2 ml of 3 M (HO)2SO2 with 9 ml of 0.2 M NaClO4

    asked by Anonymous
  274. Economics

    Do you feel there are any imbalances to our wage structure in our economy? why? give an example

    asked by Joshua
  275. Physics

    Trailing by two points, and with only 1.00 s remaining in a basketball game, a player makes a jump-shot at an angle of 35.0o with the horizontal, giving the ball a velocity of 8.50 m/s. The ball is released 0.25 m below the height of the basket, which is

    asked by Mark
  276. history

    Techniques for interest groups to reach a wide number of people and influence policy makers and voters include all of the following except _________. publicity and mass mailings offering tax write-offs litigation and amicus curiae briefs protests not sure,

    asked by Michelle
  277. math

    Find the general term of the set. {8, 12, 16, 20, 24, . . .}

    asked by Anonymous
  278. standard deviations

    The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 175 and a variance of 9. The material is considered defective if the breaking strength is less than 166 pounds. What is the probability that a single,

    asked by Anonymous
  279. Physics/Science

    Why would someone using a Foucault Pendulum at the equator say that Earth does not rotate?

    asked by Cicilia
  280. physics

    Ethyl alcohol has been added to 190 {\rm mL} of water in a container that has a mass of 140 {\rm g} when empty. The resulting container and liquid mixture has a mass of 450 {\rm g}. What volume of alcohol was added to the water?

    asked by Anonymous
  281. Economics

    A monopolist is currently producing a level of output where Price = $110; Marginal Revenue = $10; Quantity = 100; Total Cost = $15,000; Marginal Cost = $10; Total Fixed Cost = $4,000. 1. To maximize profits in the short-run, the monopolist should: (a)

    asked by Jim
  282. Math(factoring) plz check

    bx - by ANSWER: FACTOR b(x+y)

    asked by Zack
  283. sciencee

    who started bing

    asked by jesse
  284. history

    The sector of the American public that is interested in politics and understands how government works is called the __________. A.attentive public B.activists C.lobbyists D.public action members A?

    asked by Michelle
  285. geography

    1. In what country does 40 degrees N latitude cross 40 degrees E longitude? Turkey 2. Which city is the capital of Hungary: Bucharest, Budapest, Vienna, Prague? Budapest I am kinda unsure of number one. Can let me know if both of them are correct?

    asked by Reed
  286. Math equation

    find the y-intercept and the x-intercept 5x+4y=60

    asked by Lavern
  287. social

    I have to write a paper about what/who we think had the greatest impact on western civilization from 2000 BC through the 16th century. What are some possible topics I could write about?

    asked by jon
  288. math

    Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $500 balance, 20% rate, $400

    asked by Anonymous
  289. Medical billing

    Pt present for suture removal. sutures removed and slight oozing occurs in midsection of wound. wound dressed and pt advised to aply antibaterial cream daily. retn in 4 to 5 days for final check(PF HX/PX SF/MDM...WHAT IS THE OV

    asked by Gemma
  290. Medical billing

    2nd question, pt present for PO check of head wound Pariental area healed well. RTO prn ( pf hx/px/sf/mdm) what is the code...

    asked by Gemma
  291. math

    Is f(x)=4x/x-1 in factored form

    asked by Alex
  292. medical billing

    help ...Pt present for suture removal. sutures removed and slight oozing occurs in midsection of wound. wound dressed and pt advised to aply antibaterial cream daily. retn in 4 to 5 days for final check(PF HX/PX SF/MDM...what is the code

    asked by Gemma
  293. Anthro,psych, and soc

    In the movie The Shawshank Redemption how does the prison in the film try to rehabilitate its inmates? Was it sucessful? and provide 3 examples of ways in which the prison (guards) enforce compliance to prison rules, were the enforcemnts necessary or

    asked by Heather
  294. organization management

    hi, well. i would like to know whether the steps of decision making process and the steps for Rational Making Process are the same thing?

    asked by Pallavi
  295. math

    object is oblong measure's 16" round and tapers and is 21" round at wides whats the volume???

    asked by abby
  296. Physics

    If a force of 15.0 N directed east acts on a stationary 5.00 kg mass, what are its acceleration, displacement, and velocity after 10.0 s?

    asked by Tomomi
  297. critical thinking

    if we reason from the fact that all A's observed so far are B's to the conclusion that all A's whatsoever are B's, Which kind of induction would we be utilizing? I'm not sure but i think it's disjunctive syllogism.

    asked by anon
  298. physics

    At the bottom of river there is a lamp. On what minimal distance from the subject its reflection will be placed at the bottom of the river? Refraction index of water is 1.5, depth of the river is 2.5 m.

    asked by Anonymous
  299. critical thinking

    if we reason from the fact that all A's observed so far are B's to the conclusion that all A's whatsoever are B's, Which kind of induction would we be utilizing? I'm not sure but i think it's disjunctive syllogism.

    asked by anon
  300. chemistry

    78.7 mL sample of a 4.81 M sucrose solution is diluted to 120.0 mL. What is the molarity of the diluted soluti?

    asked by Amanda
  301. physics

    thanks for the answer drwls. can you please explain to me, how it happened?

    asked by gem
  302. Calculus

    Z(x^5− x^2)(x^6− 2x^3)^2011dx Thank you so much!

    asked by Jim
  303. physics

    Calculate the work done in Joules when an athlete of body weight 96 kg bench steps on a bench of height 25 cm for 48 steps. Please present this answer rounded to a whole number without decimal places.

    asked by sv