Questions Asked on
February 25, 2011

  1. cell biology

    What is the mass of 2.00 L of an intravenous glucose solution w/ a density of 1.15 g/ml?

  2. Value of a Charge of a Body (Physics 11th Grade)

    What is the value of a charge of a body that carries 20 excess electrons? I think that the question asks you to pretend that something is negatively charged by 20 electrons. So I think you take the charge of an electron, which is 1.6 x 10^-19, and multiply

  3. precalculas

    Let f(x) be the function 8x^2-5x+2 . Then the quotient [f(5+h)-(5)]/h can be simplified to ah+b for: a= b=

  4. physics

    The initial kinetic energy imparted to a 0.72 kg bullet is 1777 J. The acceleration of gravity is 9.81m/s2.Neglecting air resistance, find the range of this projectile when it is fired at an angle such that the range equals the maximum height attained.

  5. Accounting

    The cost of an asset less accumulated depreciation equals what

  6. chemistry

    When 1.70 mol CO2 and 1.70 mol H2 are placed in a 0.850 L container at 395 C, the following equilibrium is achieved: CO2(g) + H2(g) = CO(g) + H2(g) If Kc = 0.802, what are the concentrations of each substance in the equilibrium mixture?

  7. computers

    Need help with writing an imageJ plugin which is in java. Here is the question: Create an ImageJ plugin for 8-bit grayscale images of arbitrary size that paints a white frame (with pixel value 255) 10 pixels wide into the image. Here is the current plugin

  8. math

    Which of these triangles do not eist? a scalene right triangle an isosceles right triange an eguilateral right triangle an equilateral acute triangle

  9. Chemistry

    What is the product of the following reaction: Mn(s) + Cu(NO3)2 -> I just want to make sure if it's Mn+2 + Cu(s) or if there's no reaction...

  10. Physics

    A rod with cross-sectional area A and length L is made from a material with a Young's modulus of Y. This rod could be considered an extremely stiff spring with some spring constant k. Find an expression for k in terms of the other quantities.

  11. finance

    Calculate the after-tax cost of preferred stock for Bozeman-Western Airlines, Inc., which is planning to sell $10 million of $6.50 cumulative preferred stock to the public at a price of $50 a share. Issuance costs are estimated to be $2 a share. The

  12. physics

    Rosie (mass 58 kg) pushes a box with a horizontal force of 170 N (38.216 lb) at a speed 16 m/min. What is Rosie’s power output? Answer in units of W

  13. Physical Science

    Two cars are moving in identical conditions, one car is moving 3 times how much farther will this fast car travel?

  14. physics

    a stone dropped from the roof at a velocity of 6m/s2 and reaches the ground with the velocity of 18m/s.how high is the roof from the ground

  15. Financial Accounting

    What financial statement or document would a business use to account for losses, damaged goods, and stolen inventory?

  16. Science Urgent Please help

    (I have no idea how to even approach this question. Can anyone please help me?) Some people have proposed that the earth could solve its population problem by shipping people off to space colonies, each containing about 10,000 people. Assuming that we

  17. math

    two teams meet in playoff series at the end of the regular season. Team A won 55 of 81 games played in its home stadium during the regular season, while Team B won 48 of 81 games played in its home staduim. The first two games of the series will be played

  18. Calculus 1

    Find f' if x power 7 + y power 7 = 8xy

  19. American Government: Research Paper

    I chose for my Research paper to write about Mark Kirk. How do I write a thesis statement in a Bibliography? HELPPPPP :D

  20. statistics

    If a distribution of IQ test scores has a mean of 100 and a standard deviation of 16, what would be the result if we first subtract the mean (100) from each score, and then divide each of those resulting scores by the standard deviation (16)?

  21. Science. 11th Grade Pre-AP Physics

    A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, the plates are disconnected from the battery. Describe the behavior of the ball. Thank you so

  22. vocabulary

    which of these words probably comes from the latin word conducere, meaning to lead together?? complete,control,convince, conduct?

  23. Electrical versus Gravitational Forces (Physics)

    Multiple Choice help: * _____ forces between charges are enormous in comparison to ______ forces. * A. electrical, gravitational (possible?) B. gravitational, electrical (possible?) C. positive, negative (wrong, I think) D. negative, positive (wrong, I

  24. Friction and Charge (Physics Pre-AP 11th Grade)

    When a fuel truck is moving, the friction between the truck tires and the road causes charge to build up. This is an example of charging by conduction. a. Explain why the build up of charge is a hazard. b. What can be done to prevent the hazard that would

  25. Physics

    Steel is very stiff, and the Young's modulus for steel is unusually large, 2.0×1011 N/m2. A cube of steel 25 cm on a side supports a load of 85 kg that has the same horizontal cross section as the steel cube. What is the magnitude of the "normal" force

  26. Physics

    A hanging wire made out of titanium with diameter 0.080 cm is initially 2.3 m long. When a 78 kg mass is hung from it, the wire stretches an amount 2.89 cm. A mole of titanium has a mass of 47.9 grams, and its density is 4.51 g/cm3. Based on these

  27. elementary calc

    f(x) passes through (0,2). the slope of f at any point is 3 times the y-coordinate. find the derivative at 1

  28. medical office bookkeeping

    I need to outline a step process to prepare a deposit from multiple payers. can you help?

  29. physics

    what is the frequncy per minute of a skater making rounds at rink with radius of 2.5 m of her speed is 5 km/hr?

  30. physics

    Batman, whose mass is 119 kg, is holding on to the free end of a 14.6 m rope, the other end of which is fixed to a tree limb above. He is able to get the rope in motion as only Batman knows how, eventually getting it to swing enough that he can reach a

  31. physics

    an object travelling at 10m/s accelerates at 4m/s2 for 8 seconds.what is the final velocity and how far does it travel during the 8 seconds

  32. physics

    A woman pushes a lawn mower with a con- stant force of 112 Newtons at an angle of 37 with respect to the horizontal. The lawn mower moves at a speed of 20 cm/sec. What is her power output? (1 hp = 746 Watts)

  33. physics

    using well labelled diagrams,briefly describe how you would determine the density of an irregular object

  34. ap physics

    Karen has a mass of 48.2 kg as she rides the up escalator at Woodley Park Station of the Washington D.C. Metro. Karen rode a distance of 65.7 m, the longest escalator in the free world. The acceleration of gravity is 9.8 m/s2 . How much work did the

  35. ap physics

    On a frozen pond, a 7 kg sled is given a kick that imparts to it an initial speed of 3.1 m/s. The coefficient of kinetic friction between sled and ice is 0.15. The acceleration of gravity is 9.8 m/s2 . Find the distance the sled moves before coming to

  36. physics

    A cannon on a railroad car is facing in a direction parallel to the tracks (the figure below ). It fires a 99-kg shell at a speed of 105 m/s (relative to the ground) at an angle of 60 above the horizontal. If the cannon plus car have a mass of 4.6 104 kg,

  37. ap physics

    When a rattlesnake strikes, its head acceler- ates from rest to a speed of 21 m/s in 0.46 s seconds. Assume for simplicity that the only moving part of the snake is its head of mass 200 g. How much (average) power does the rat- tlesnake need to accelerate

  38. algebra

    4ã96x^8y^10

  39. math

    not sure how to enter my problem in the calculator/ti-34 multiview

  40. english

    Are you going to go trick or treating? which is subject which is predicate.

  41. 5th grade math

    yes ,i definetly did,more than once ,i just had trouble comprehending the way they try to explain it.thats why i asked to please get help showing several of both kinds of problems,some addition &some subtraction so i could try to understand how they where

  42. Geomtrey

    Which of the following points can be considered the third point forming a right triangle given points (0, 0) and (0, 5)?

  43. geomtrey

    Which of the following is a coordinate of the new image of a triangle located at {(-3, 0), (-1, 4), (3, 0)}, after the translation (x + 2, y - 4)?

  44. physics

    Part 1 A 15.6 kg block is dragged over a rough, hor- izontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of kinetic friction is 0.234. Find the work done by

  45. physics

    On a distant planet, the acceleration due to gravity is 5.30 m/s2, and the radius is 4600 km. Use the law of gravitation to calculate the mass of this planet.

  46. math (calculus)

    what would be the answer when you plug 5pi/4 into this equation 6sec^2x-7sinx for x? i cant get the answer need some help

  47. geometry

    each leg of an octagon is 48" what is the diameter?

  48. Geometry

    Find the measure of each angle if

  49. Phyisics

    A 256 kg stone has an acceleration of 90.7 m/s2. Determine the net force acting on the stone.

  50. operations management

    Best Wheels Bicycle Company is looking to automate production of a framing component and will need to purchase new frame fabrication machinery. The company has narrowed the selection to 2 machines that have a useful life of 3 years. The company operates 8

  51. physics

    A horizontal wire carries a large current. A second wire carrying a current in the same direction is suspended below it.Can the current in the upper wire hold the lower wire in suspension against gravity?

  52. Economics

    I am doing an assignment where I am starting up a Food Van where I sell burgers. What would be some implicit costs? Also, what would be some variable costs? Thanks.

  53. physics

    A woman pushes a lawn mower with a con- stant force of 112 Newtons at an angle of 37 with respect to the horizontal. The lawn mower moves at a speed of 20 cm/sec. What is her power output? (1 hp = 746 Watts) 1. 0.040 hp 2. 0.024 hp 3. 0.034 hp 4. 0.020 hp

  54. Psychology

    What are some problems with the following research study and how can I improve them? A researcher is interested in testing whether violent films make people more aggressive (the hypothesis). He asks his research assistants to wait outside the Friday night

  55. Med office asst

    which of the following codes should you insert in block # 217? 802.20 802.30 99204 J9293

  56. math

    a 59 centimeter piece of rope is cut into two pieces. If one piece is x centimeters long, express the other length as an algebraic expression in x.

  57. math

    two teams meet in playoff series at the end of the regular season. Team A won 55 of 81 games played in its home stadium during the regular season, while Team B won 48 of 81 games played in its home staduim. The first two games of the series will be played

  58. Math

    I need help with renaming fractions. How do you rename 2/9 in eighteenths? Please help.

  59. Multicultural Psychology?

    The question is: Do populations such as women, gays, !@#$%^&s, the elderly, and those with disabilities constitute a distinct group? Why or why not? The following is my answer. Can someone help by adding more to this answer? These populations are all are

  60. Physics

    After falling from rest from a height of 27 m, a 0.53 kg ball rebounds upward, reaching a height of 17 m. If the contact between ball and ground lasted 1.6 ms, what average force was exerted on the ball?

  61. College

    Identify the advantages of modern symbolic logic over classical logic (categorical syllogisms)?

  62. American Government: Illinois Senator

    Are there any books about Mark Kirk? Please let me know! THANKS (:

  63. physics

    A horizontal wire carries a large current. A second wire carrying a current in the same direction is suspended below it.Can the current in the upper wire hold the lower wire in suspension against gravity?

  64. Biology

    In recent years phytoplankton have been investigated as a potential source of energy for humans. Researchers have therefore been interested in whether these organisms could be ‘farmed’ to provide food or fuel. In terms of biomass, Gross Primary

  65. physics

    Part 1 A 1260 kg car accelerates uniformly from rest to 4.65 m/s in 2.6 s. Find the work done on the car in this time.Answer in units of J. Part 2 Find the average power delivered by the en- gine in the first 1.768 s. Answer in units of W. Part 3 Find the

  66. Biology

    If a human needs to eat about 10 000 kJ per day, estimate (to the nearest gram) the mass of phytoplankton that would be required to meet their daily energy requirements. Based on this value, approximately what proportion of her own body weight in

  67. American Gov

    How does Congress affect the agenda of the President?

  68. Biology

    Can you describe at which stage oxygen is involved and explain its role, in photosynthesis please? Also in respiration too if you can :) (my subject at school is phytoplankton) thank you for your help

  69. Maths

    Solve for x and y: 2x+y=3 and x^2+y+7=0

  70. Statistics

    The time required to make 900 gallons of synthetic rubber at a plant in South America in a recent year was normally distributed with a mean of 15 hours and a standard deviation of 2.5 hours. What is the probability that it will take more than 17 hours to

  71. math

    Which set of decimal numbers is in the order least to greatest? A. .04,.004,.4,.043 B..004,.4,.043,.401 C..043,.401,.004,.04 D..004,.043,.4,.401

  72. World Civics

    How did the U.S. affect Latin America in the 1920's and 1930's? Was it positive or negative? Explain. What happened to Latin American governments in the 1930's? Why did it happen?

  73. southuniversity

    You have been hired as the marketing manager. Research and identify major approaches of how innovations like these are adopted by consumers. Discuss how the marketing strategy for the car needs to rapidly move through these processes. Who or what are the

  74. Us History

    What were some supporting details of the "Holocaust"?

  75. 20th century american History

    Why was the Industrial Revolution a major agent of change for the United States and the world?

  76. calculus

    How do I integrate tanx (1+sec^4 x)^3/2 dx My daughter is doing surface area problems, and all the examples assume she knows how to finish it off once we get to the integration....

  77. math

    At the school store, 5 pens sell for $1.25. Which proportion will help find the cost of 12 pens?

  78. math

    Which set of decimal numbers is in the order from least to greatest? A. .04,.004,.4,.043 B..004,.4,.043,.401 C..043,.401,.004,.04 D..004,.043,.4,.401

  79. physics

    i have noo idea how to do this, please hellppppp A 15.6 kg block is dragged over a rough, hor- izontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of

  80. physics

    Part 1 A block of mass 4 kg, which has an initial speed of 8 m/s at time t = 0, slides on a horizontal surface.Find the magnitude of the work that must be done on the block to bring it to rest. Answer in units of J. Part 2 If a constant friction force of

  81. physics

    You see a pair of shoes tied together by the laces and hanging over a telephone line. You throw a 0.21-kg stone at one of the shoes (mass = 0.35 kg), and it collides elastically with the shoe with a velocity of 1.8 m/s in the horizontal direction. How far

  82. To Chelsea --

    We do not have access to any school's materials or exams. Even if we did, we certainly would NOT post the answers. You are no credit to Penn Foster! Check this site for Penn-Foster's cheating policies. http://www.pennfoster.edu/cheatpolicy.html

  83. physic

    Part 1 A 3.0 kg block is pushed 3.0 m at a constant velocity up a vertical wall by a constant force applied at an angle of 30.0 ◦ with the horizontal, as shown in the figure. The acceleration of gravity is 9.81 m/s2. If the coefficient of kinetic

  84. management fundamentals

    how would you address the 3 main problems in a failing organization the product line is out dated, adversarial communication, and competition for internal resources.

  85. physics

    A student weighing 700 N climbs at constant speed to the top of an 8 m vertical rope in 10 s. The average power expended by the student to overcome gravity is most nearly 1. P = 560 W. 2. P = 87.5 W. 3. P = 5, 600 W 4. P = 1.1 W. 5. P = 875 W

  86. economics

    has any one solved the Tampa Tribune Vs. St Petersburg Times game theory problem?

  87. physics

    Part 2 You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 20000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 2.19 m and the cannon is aimed at a 32◦

  88. A Level Law

    what are sentences for young offenders and what particular aims of sentencing are relevant for young offenders

  89. Physics

    A student applies an upward force of 58 N to a 5.1-kg physics textbook. Find the book’s acceleration (positive for up, negative for down).

  90. physics

    The largest railway gun ever built was called Gustav and was used briefly in World War II. The gun, mount, and train car had a total mass of 1.22 106 kg. The gun fired a projectile that was 80.0 cm in diameter and weighed 7502 kg. In the firing illustrated

  91. math

    On the way to school, Bobby noticed the school bus travels 8 miles north, then turns west and goes 6 miles to get to school. If there were a road that went straight from Bobby's house to school, how long the road would be?

  92. Physics

    A 10-kg duffle bag is undergoing a vertical acceleration of 0.050 m/s2 (positive for up, negative for down), while its owner is holding it with an upward force. What is the magnitude of this force?

  93. physics

    Part 1 In the 1950’s, an experimental train that had a mass of 32800 kg was powered across a level track by a jet engine that produced a thrust of 4.37 × 10^5N for a distance of 465 m. Find the work done on the train. Answer in units of J. Part 2 Find

  94. physics

    A physics professor lifts her 9.0-kg briefcase at constant speed with an upward force. Find the magnitude of her force.

  95. physics

    Georgie was pulling her brother (of mass 25 kg) in a 10.4 kg sled with a constant force of 24 N for one block (72 m). How much work did Georgie do? Answer in units of J.

  96. writing

    properly composed APA sentence. It is I, It is me, It is him or It is he that threw the first pitch?

  97. macroeconomics

    As an economist, you have been asked to write a letter to a meeting of international professionals to explain the differences between microeconomics and macroeconomics and to provide real-world examples. Please write a letter of 4–6 pages including, but

  98. Calculus

    Consider the parabola r(t)=, does the principal unit normal vector point in the + or - y-direction along the curve?

  99. physics

    A 50-kg penguin stands on ice. A helium balloon is attached to the penguin by means of a harness and pulls upward with a force of 90 N. What is the normal force of the ice on the penguin?

  100. Writing

    Which sentence is most properly composed? It is I, It is me, It is him or It is he that threw the first pitch?

  101. aims math

    A box is shaped like a cube with edges 11 centimeters long. What is the best approximation of the volume of the box?

  102. Chemistry

    Please help me with this one... What is the oxidizing agent in the following redox reaction: HNO3(aq) + K2CrO4(aq) + Fe(NO3)2(aq) -> KNO3(aq) + Fe(NO3)3(aq) + Cr(NO3)3(aq) + H2O(l) ?

  103. physics

    A 32.0-kg penguin on frictionless ice holds onto the end of a horizontal spring with spring constant 250 N/m and oscillates back and forth. What is its period of oscillation?

  104. physics

    A 1920-kg Cadillac and a 1000-kg Volkswagen meet at an intersection. The stoplight has just turned green, and the Cadillac, heading north, drives forward into the intersection. The Volkswagen, traveling east, fails to stop. The Volkswagen crashes into the

  105. math

    Factorise. 7ab-2b^2+4a^2

  106. physics

    Two balls of equal mass collide and stick together as shown in the figure. The initial velocity of ball B is twice that of ball A. (Take è = 34°.) (a) Calculate the angle above the horizontal of the motion of mass A + B after the collision. 1 Units are

  107. Physical Science

    A water balloon dropped from a dorm window does not break on impact. From what height would you need to drop the balloon to double the speed of the balloon?

  108. math

    Dane is three years older than twice his brother's age,(b). Which algebraic expression below represents Dane's age? A. b+3 B. 2b+3 C. 3-2b D. 2b-3

  109. math

    Cn someone factorise. 3a^2-21a-24

  110. CHEM101

    Do you have to know accurately the concentration of NaOH?

  111. physics

    A water balloon dropped from a dorm window does not break on impact. From what height would you need to drop the balloon to double the speed of the balloon?

  112. statistics

    . Consider the following: Suppose 58% of the population are more than 6 feet tall - If a random sample of size 833 is selected, what is the probability that the proportion of the sampled persons more than 6 feet tall will be greater than 63%

  113. math

    Daniel's bonus at work this year is $1000.00 added to 20% of his yearly salary. If X represents his yearly salary, which of the following algebraic expressions should be used to figure the amount of his bonus? A. 0.2(1000+x) B. 1000+x/0.2 C. 0.2x+1000 D.

  114. cis 113

    num values[4]=0,0,0,0,?

  115. Physics (Pre-AP)

    I have the same exact question as BAdams did in 2008! I was wondering if anyone could explain this in further detail. A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below.

  116. statistics

    Consider the following: A telephone exchange operator assumes that 8% of the phone calls are wrong numbers. -If the operator is accurate, what is the probability that the proportion of wrong numbers in a sample of 726 would be less than 7%?

  117. algebra

    multiply and simplify, I am confused. 3ãy^7 3ã16y^8

  118. Physical Science

    In a pulley sytem with 100% effieciency with ten support cables. The input side reels 100 meters of cable. How far dis the output move? What is the value of the output force? In identical conditions at 70% efficiency, the cable does not stretch. How much

  119. algebra

    simplify and factor 5ã320x^7y^25

  120. algebra

    divide 3ã189a^7b^8

  121. math

    If the cost of a cell phone has decreased 20% a year during the past 10 years, does that correspond to a cost decrease of 200%? Explain your answer as though you were talking to someone who has never taken algebra.

  122. math

    Thank u drwls n u obakeng now plz factorise this one. 25x^2-25xy+6y^2

  123. college algebra

    4ã486x^12y^14

  124. history

    Explain how the existence of the Confederate government played a role in the development of the current constitution. I feel that the articles of confederation joined the states to gether- uniting America and creating a government that was elected by the

  125. physics

    In the ballroom of a historic palace near Paris, a chandelier hangs from the ceiling by a cable. The mass of the chandelier is 390 kg. Find the tension in the cable.

  126. math

    suppose the eggplants at a store in thailand are priced at 1.24 baht per kilogram, where one dollar is worth 1.37 baht. what is the price of the eggplants in dollars per pound? how do you figure this out

  127. health studies

    Are bureaucracies a social determiant of health? How?

  128. math

    Dane is three years older than twice his brother's age,(b). Which algebraic expression below represents Dane's age? A. b+3 B. 2b+3 C. 3-2b D. 2b-3 I think the answer is C.

  129. physics

    A physics professor lifts her 9.0-kg briefcase at constant speed with an upward force. Find the magnitude of her force.

  130. physics

    A physics professor lifts her 9.0-kg briefcase at constant speed with an upward force. Find the magnitude of her force.

  131. chemistry

    What volume of 0.200 M silver nitrate solution (AgNO3) would have to be diluted to form 500mL of 0.050 M solution?

  132. physics

    A 10-kg duffle bag is undergoing a vertical acceleration of 0.050 m/s2 (positive for up, negative for down), while its owner is holding it with an upward force. What is the magnitude of this force?

  133. Language

    How many words can i write that are related to the base word image? Notice whether you have added prefixes or suffixes to the base

  134. Accounting

    Cost Allocation is a method to identify and distribute indirect costs. Direct costs are costs assignable to a specific cost objective, whereas indirect costs are costs incurred for multiple cost objectives or not assignable to a specific cost objective

  135. Accounting

    The primary objective in job order costing is to determine the cost of materials, labor, and factory overhead used to produce a specific order or contract. Cost estimates are made when the order is taken, and the job order procedures are designed to reveal

  136. Social Studies

    What are the differences and similarities of the social structure and family values of persons from Bosnia and persons from Poland?

  137. statistics

    The scores on a personality test are normally distributed with a mean of 250 and a standard deviation of 30. What proportion of people taking the test can be expected to score above 229?

  138. Chemistry - physical, chemical and nuclear process

    A healthy human body maintains a temperature of about 37.00C. Explain how physical, chemical and nuclear processes all contribute, directly or indirectly, to keeping the human body at a constant temperature.

  139. calculus

    find the general solution to the differential equation. dy/dx=secxtanx-e^x

  140. Finance

    Write a 200 word paper describing the goals of financial management. The description should include how earnings are valued, how shareholder wealth can be maximized, and how management decisions affect stockholder wealth.

  141. algebra

    It snowed 10 days in January for a total of 'N' inches of snow. The expression below shows the average snow fall per day over the 10 days Evaluate the expression if 'N'= 20 A. 2 inches C. 30 inches B. 10 inches D.200 inches

  142. Physics

    a 45N lithograph is supported by two wires. One wire makes a 25 angle with the vertical and the other makes a 15 angle with the vertical. find the tension in each wire

  143. Static Electricity. 11th Grade Pre-AP Physics

    Hi everyone! I need some help studying for a test on Static Electricity. I have a few review questions that I don't know how to do. Below they are numbered and in parenthesis I answered what I think you might have to do to get the answer. Please help me in

  144. math

    Commuting students. At a well-known university ¼ of the undergraduate students commute, and 1/3 of the graduate students commute. One-tenth of the undergraduate students drive more than 40 miles daily, and 1/6 of the graduate students drive more than 40

  145. Force if Distance is Doubled (Physics 11th Grade)

    Two like-charged balloons, placed at a distance of .5 meters, experience a repulsive force of .32 N. What is the force if the distance between the two balloons is doubled? If you use Coulomb's Law, the equation used to find .32 N was Force = the constant

  146. History

    why do you most students have presidents day off?

  147. algebra

    3ã^7 3ã16y^8

  148. Math

    Can you please tell me how I go about working out the answer to this question? A sprinter has to run a race over 100 feet (ft). How many metres is this? (Hint: You may need to use two conversion factors for this problem) Thank you.

  149. Physics

    I have a problem where I need the force exerted by an object onto a scale. The object weighs 22 lbs. What is the force? Do I need to multiply that by 32.2 ft/s^2? What are the US units for force and what is it in this situation?

  150. Calculus

    I need help with this question: The strength of a beam with a rectangular cross section varies directly as x and as the square of y. What are the dimensions of the strongest beam that can be sawed out of a round log with diameter d? What am I supposed to

  151. [+] (+) [-] PHYSICS PRE-AP 11th GRADE

    A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, the plates are disconnected from the battery. Describe the behavior of the ball. Could you

  152. Force between Charged Spheres (Physics 11th Grade)

    What is the force between two small charged spheres that have charges of 2 x 10^-7 and 3 x 10^-7 if the distance of r is 30 cm. I think you use Force = the constant of K multiplied by the product of the charges divided by the square of the distance again.

  153. Algebra 2

    Please help! (1/4x^4+6/7x^3+1/8x^2+7) + (-3/4x^4+7/8x^2-7).Thank you

  154. Algebra II

    how do you get the x inercept of a equation like 7/(4x^2-21x-49)? I know you put it in y=mx+b but i don't know how to solve for x in this

  155. geometry

    Find the area of the following figure given that AC = 15 in and BC = 12 in.

  156. MATH(CALCULUS)

    f(x)=12x/(sinx+cosx) find f'(-pie) need some help!

  157. algebra

    if a vendor charges p dollars each for rugby shirts, then he expects to sell 2000-100p shirts at a tournament. a. Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each b. Find r(5), R(10), and R(20) C. Use the bar

  158. Algebra 2

    Divide. x^2+7x-37/x+9. Please help me.

  159. Science

    An artillery shell is fired with a minimal velocity of 400 m/s at 54 deg above the horizontal. To clear an avalanche, it explodes on a mountain side 40 s after firing. What is the X-coordinate relative to it's firing point? What is the Y-coordinate?

  160. marketing

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  161. PHysics

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  162. chemistry

    The mole fraction of an aqueous solution of sodium dichromate is 0.367. Calculate the molarity (in mol/L) of the sodium dichromate solution, if the density of the solution is 1.42 g mL-1.

  163. pre calc

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  164. Math

    Is my answer and working out correct for this question? A patient requires 0.08g of codeine for pain releif. If a tablet contains 20mg of codeine, then how many of the condeine tablets would be administered to the patient? My answer: 1000mg = 1g 0.08g x

  165. math

    Simplify: (2^1/2) * (8^1/2)/4

  166. ap chem

    ok, so i have to find the mass of the HNO3 in 1 L and the mass of the H2O in 1 L. I'm given: HNO3 solution 1.42 g/mL 16M I'm really terrible at this stuff and it should be easy, but I have no idea where to start.

  167. Science

    A block with a mass of 3.07 kg is placed at rest on a surface inclined at an angle of 44.6° above the horizontal. The coefficient of static friction between the block and the surface is 0.540, and a force of magnitude pushes upward on the block, parallel

  168. math

    Factorise showing your work. 48a^2+4ab-140b^2

  169. physics

    Question part Points Submissions 1 2 0/1 0/1 0/10 0/10 Total 0/2 A 3.5-kg block slides with a speed of 1.6 m/s on a frictionless, horizontal surface until it encounters a spring.

  170. Chemistry

    What is the osmotic pressure(in torr)of a 0.0015 M NaCl at 25 degrees celsius? (R= 62.4 L*torr/mol*K) Please show me how to set up the equation.

  171. ap chem

    ok, so i have to find the mass of the HNO3 in 1 L and the mass of the H2O in 1 L. I'm given: HNO3 solution 1.42 g/mL 16M I'm really terrible at this stuff and it should be easy, but I have no idea where to start.

  172. rational number operations

    Use the properties of rational number operations to find a value for x that solves the equation 2/7x = 3/5

  173. pysics

    What was the KE of an 8 kg mass at 11 m/s

  174. Social Psychology

    Explain the concept of situations and the role that it plays in social psychology.

  175. Chemistry

    While in Europe, if you drive 113 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 32.0 mi/gal? Assume that 1 euro = 1.26dollars.

  176. PSY

    Please help I get confused on the intelligence descriptions. Appropriately matching the profession with the their greatest area of intelligence. Intelligence Profession Kinesthetic Intelligence Ballet dancer Spatial Intelligence Photographer Spatial

  177. it

    structured design (pseudocode only) driving a car

  178. statistics

    If the heights within a certain subpopulation of people are normally distributed with a mean of 180 centimeters and a standard deviation of 10 centimeters, what proportion of the people is shorter than 195 centimeters? Z=(score-mean)/SD after finiding the

  179. Chemistry 12

    In a lab the task was to dilute a 1.0M sol'n of Acetic Acid to a sol'n with a final pH of 4.15. The method I used to solve this was apparently wrong, but I don't understand how or why. Please help! Here is what I did: AcOH + H2O H3O+ + AcO- First I found

  180. statistics

    If the heights within a certain subpopulation of people are normally distributed with a mean of 180 centimeters and a standard deviation of 10 centimeters, what proportion of the people is shorter than 195 centimeters? Z=(score-mean)/SD after finiding the

  181. biology

    Suppose that the concentration of H+ in solution #1 is 10,000 times greater than the solution #2. What can you conclude about the difference in pH of these two solutions?

  182. physics

    Search: A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +18.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +11.0 revolutions. How much time does it take for the bike

  183. + --> a sphere --> (+)

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  184. Algebra 2

    How can you check if 3+i is a zero of the equation x^4-6x^3+6x^2+24x-40?

  185. calculus

    please help i am lost at what is dy/dx and what is dy/dt. A trough is 10ft long and its ends have the shape of isosceles triangles that are 3 ft across at the top and have a height of 1ft. If the trough is being filled with water at a rate of 12ft^3/min,

  186. Physics

    Two pucks collide on an air hockey table. Puck A has a mass of 16 g and is initially traveling in the +x direction at 6.2 m/s. Puck B has a mass of 64 g and is initially at rest. After the pucks collide, puck A moves away at an angle of 58 above the +x

  187. science

    An air condition lowers the temperature of the surrounding air.Water condensed from air is mostly likely to run out of the bottom water hose of an automobile air conditioner when the air entering the air conditioner is

  188. calculus

    what are the domains of y=ln(x^2-4x)

  189. Physics

    A certain coiled wire with uneven windings has the property that to stretch it an amount s from its relaxed length requires a force that is given by , so its behavior is different from a normal spring. You suspend this device vertically, and its

  190. calculus

    Derivative of: (exp(8x^4))(5x^3+9)^3 ___________________________ (divided by) (22x^2+4x-20)^2

  191. Physics

    One mole of tungsten has a mass of 184 grams, and its density is 19.3 grams per cubic centimeter, so the center-to-center distance between atoms is 2.51×10-10 m. You have a long thin bar of tungsten, 2.2 m long, with a square cross-section 0.16 cm on a

  192. chemistry

    what mass of Nacl and H2o are present in 160.0g of 12 mass percentage solution of Nacl?

  193. Visual Basic

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  194. chemistry

    Mass of "KHP" to neutralize 18 mL of 0.20 M NaOH?

  195. Yr 10 English

    Hey guys, Need help with an intro of this question or a prompt. Imagine you're a 12 year old boy from Afghanistan who is newly arrived in Australia. Write a diray entry outlining your experiences of your first day at school. Include 5 words from the

  196. History

    What led to the end of the reconstruction era?

  197. physics

    formula for coefficient of static friction

  198. statistics

    The average temperature in households is 67.6 degrees F. The standard deviation is 4.2 degrees F. A random sample of 51 households is to be selected (a) What is the probability that the average of this sample will be above 68.3 degrees F? Probability = (4

  199. precalculas

    Let f(x) be the function 1/[x+12] . Then the quotient [f(4+h)-f(4)]/h can be simplified to for: -1/[ah+b] a= b=

  200. cis

    I have to find three errors and ther two logic and syntax error. HELP ME IN IT AND Below is code. Rem ===========BEGIN SAMPLE CODE============ REM Read 9 scores and report the average Dim score(10) For i = 1 to 10 CALL fillArray PRINT "The average score is

  201. Logic

    Are there advantages of modern symbolic logic over classical logic (categorical syllogisms)?

  202. French

    For nous, do you pluralize the adjective? For example "nous sommes bizarres?"

  203. Physics-Please help with formula

    If I have an electric field around a charged object that is 2.95 x 10^6 N/C at a distance of 0.400m, how would I find the charge on the object? If you could just direct me with a formula-then I'll do it and check back with my answer-Thank you for you help