1. physics

    A car drives straight down toward the bottom of a valley and up the other side on a road whose bottom has a radius of curvature of 125mm . At the very bottom, the normal force on the driver is twice his weight.

    asked by Anonymous on November 6, 2014
  2. statistics

    The lifetime of a 2 volt non-rechargeable battery has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours. What is the z- score for batteries with lifetimes of 520 hours

    asked by Gee on September 3, 2012
  3. Algebra

    Keiko is a software saleswoman. Let y represent her total pay (in dollars). Let x represent the number of copies of History is Fun she sells. Suppose that x and y are related by the equation 2200+90x=y . Answer the questions below. Note that a change can

    asked by Roderick on March 28, 2014
  4. Algebra 2

    Deandre is a software salesman. Let y represent his total pay (in dollars). Let x represent the number of copies of English is Fun he sells. Suppose that x and y are related by the equation 2400+70x=y Answer the questions below. Note that a change can be

    asked by Jamie on August 26, 2018
  5. teachers aide early chidhood education and after s

    which type of afterschhol game is usually most successful with young children? (a)highly structured group games (b)noncompetitive physical games (my answer) (c)indivual quiet games (d)educational reading and writing games one of the primary concerns of

    asked by susue on August 29, 2011
  6. Physical Education

    (a) Calculate the average blood velocity in the major arties given that the aorta has a radius of 1.0 cm, the blood velocity is 30 cm/s in the aorta, and the total cross-sectional area of the major arties is 20 cm2 (b) What is the total flow rate? (c) On

    asked by Janaiby on May 13, 2013
  7. Science

    1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True

    asked by Chloé on March 17, 2014
  8. Science -Check Answers-

    1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True

    asked by Chloé on March 17, 2014
  9. statistic

    Let x be a random variable that represents the length of time it takes a student to complete a take-home exam in Dr. Larson’s psychology class. After interviewing many students, it was found that x has an approximately normal distribution with mean =5.2

    asked by Anonymous on November 6, 2013
  10. Physics

    Continue...previous question b)what normal force would the car experience on the top of a circular hill of radius 20.0m when it reaches the near horizontal section of the vertical curve with a speed of 12.0 m/s ? Draw app. free body diagram.

    asked by johnny on October 29, 2007
  11. Maths / Physics (uni level)

    Say I have a centre of rotation at C(x, y, 1

    asked by Lianne on May 24, 2017
  12. Chemistry

    The combustion of carbon monoxide is represented by the equation below: CO (g) + 1/2O2 (g) ----> CO2 (g) a) determine the value of the standard enthalpy change, for the combustion of CO at 298 K using the following info. C (s) + 1/2 O2(g) ----> CO (g)

    asked by Nick on October 9, 2007
  13. Math

    The measure of (Angle)D is 5 times the measure of (Angle)E. The two angles are supplementary. Find the measure of each angle. My Method: x+x*5=180 I tried this but it didn't work, any correct steps?

    asked by Katelyn on November 13, 2017
  14. PROBLEM SOLVING IN MATHEMATICS

    what do you need to know to solve this? you have kite ABCD. angle B is at the top of the kite and measures 80 degrees. angles A and C are on the sides and angle D is at the bottom of the kite. what is the largest siza that angle A or C could be?

    asked by alya on October 14, 2011
  15. PROBLEM SOLVING IN MATHEMATICS

    what do you need to know to solve this? you have kite ABCD. angle B is at the top of the kite and measures 80 degrees. angles A and C are on the sides and angle D is at the bottom of the kite. what is the largest siza that angle A or C could be?

    asked by HELP ME!!!! on October 18, 2011
  16. Calculus

    q 0 125 250 375 500 625 750 C'(q) 26 24 30 26 23 25 29 a) If the fixed cost is $8500, use the average of left- and right-hand sums to determine the total cost of producing 500 units. Answer: $ b) How much would the total cost increase if production were

    asked by Lena on November 15, 2010
  17. Trig..please help!

    Two forces are pushing an ice shanty along the Ice. One has a magnitude of 330 lb in a direction due east. The other force has a magnitude of 110 lb in a direction 54 degrees east of north. What are the magnitude and direction of the resulant force?

    asked by Rachel on January 6, 2013
  18. geometry

    From the base of a hill , the angle of elevation is 23 degrees . The tree forms a 110 degrees angle with the hillside . The distance from the base of the hill to the base of the tree is 120 meters. Find the height of the tree.

    asked by Liwen on December 15, 2015
  19. physics

    Suppose the smallest division on the scale of the timing device is t, the reaction time of a normal person os t', which one should be used for estimating the incertainty on the measurement of period T after a single timing activity? Explain briefly.

    asked by gay on May 11, 2010
  20. Middle childhood Psychology

    Is it important to start children in school according to the normal ages where they go through different mental stages? I notice that the same information is presented to children throughout the educational system but at different times so that the child

    asked by Sharon on July 31, 2011
  21. help! physics

    Two masses (m1 = 532 grams, m2 = 114 grams) are connected with a rope through a frictionless pulley The ramp has an elevation angle θ = 65.3° and a coefficient of friction μ = 0.184. What are Fll and Fperpendicular for m1? What is the normal force on

    asked by Haley on November 30, 2010
  22. state

    A machine put the juice in the bottle with normal distribution with mean is equal to 50 cl, with the standard deviation 5 cl. Test was done to see if the claim is right. A sample of 100 bottles were tested. They got the average content of 48.9 cl. At ∝

    asked by iram on December 11, 2015
  23. Physics

    A 50-kiligram block initially at rest on a flat, level and smooth surface is pulled by 6.0 Newton acting 37 degrees North above the horizontal. Find the normal force and acceleration of the block.

    asked by Jay on February 23, 2016
  24. Stat

    Thirty randomly selected students took the calculus final. If the sample mean was 89 and the standard deviation was 6.2, construct a 99% confidence interval of the mean score of all students. Assume that the population has a normal distribution. what

    asked by Billy on September 30, 2014
  25. Chemistry

    Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1 degrees celsius. At what temperature does benzene boil when the external pressure is 480 torr? Can someone show me an equation and how to solve this?

    asked by Anonymous on July 19, 2011
  26. Physics

    Consider a spider walking from the top of a (stationary) beach ball. (Let that angular position = 0 O .) The spider finds it loses its grip when the normal force between it and the surface is less than 1/2 of its weight. At what angle does this slipping

    asked by Zac on July 26, 2012
  27. Biology

    Find an angiosperm that has modified leaves, stems, roots or flowers that do not function in a normal manner? Example: Claifornia Barrel Cactus has spines in place of leaves to reduce water loss.

    asked by Michelle on July 7, 2008
  28. math

    when 2 lines intersect and form an acute angle A and both lines have a positive x-intercepts but the y-intercepts are on opposite sides of the origin. How would you write an equation showing the relationship between A and the angles that the normals make

    asked by kim on April 18, 2009
  29. trig

    From the top of a tower of height 75m, a man sees two goats, both due west of him. If the angles of depression of the two goats are 10 degrees and 17 degrees, calculate the distance between them. It wants the angle of depression. I , myself, don't

    asked by Anonymous on November 17, 2014
  30. Chemistry

    The unit cell with all sides the same length and all angles equal to 90 degrees that has lattice points only at the corners is called monoclinic body-centered cubic primative cubic face-centered cubic spherical cubic

    asked by Lauren on February 6, 2008
  31. physics

    A conductor 400mm long moves at a uniform speed of 4 m/s at a right angles to a uniform magnetic field of flux density 4.7 Tesla. Find then induce emf? F=BIL sin degrees 4.7*0.4*4*sin 90 degrees = 7.52

    asked by Eren A on June 4, 2015
  32. math

    from the top of a vertical mast 150m high,two huts on the same ground level are observed. One due east and the other due west of the mast. Their angles of depression are 60° and 45° respectively. Find the distance between the huts. Solutuons with diagram

    asked by Folorunsho on January 17, 2017
  33. physics

    Two ice skaters approach each other at right angles. Skater A has a mass of 30.7 kg and travels in the +x direction at 2.64 m/s. Skater B has a mass of 109 kg and is moving in the +y direction at 1.29 m/s. They collide and cling together. Find the final

    asked by luma on December 20, 2015
  34. physics

    Two archers shoot arrows in the same direction from the same place with the same initial speeds, but at different angles. One shoots at 45 degres above the horizontal, while the other shoots at 60 degrees. If the arrow launched at 45 degrees lands 225 from

    asked by Anonymous on October 14, 2010
  35. Math

    From a point 120m from the foot of a building, the angles of elevation of the top and bottom of the flagpole are 49 degrees and 46 degrees respectively. Find the height of the flagpole (answer 13.8m) I couldn't get the answer because I thought the question

    asked by Anonymous on May 21, 2015
  36. geometry

    Two boats are spotted by a Coast Guard helicopter. The helicopter is 150 yards above the water. The angles of depression are 12.5° and 15.3°. How far apart are the boats? (The boats are in the same general direction from the helicopter.) Pls help i have

    asked by morgan on July 6, 2017
  37. Writing

    Write an annotated bibliography on:Meyer, J. P., Becker, T. E., & Vandenberghe, C. (2004). Employee Commitment and Motivation: A Conceptual Analysis and Integrative Model. Journal Of Applied Psychology, 89(6), 991-1007. doi:10.1037/0021-9010.89.6.991

    asked by Keyal on November 9, 2017
  38. physics

    An accelerating voltage of 2.46 * 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 34.0 cm away. What is the magnitude of the deflection on the

    asked by Rachel on April 8, 2011
  39. physics

    An accelerating voltage of 2.46 * 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 34.0 cm away. What is the magnitude of the deflection on the

    asked by Rachel on April 8, 2011
  40. Physics. PLEASE HELP!!

    A uniform disk with a mass of 130 kg and a radius of 1.2 m rotates initially with an angular speed of 950 rev/min. A constant tangential force is applied at a radial distance of 0.5 m. How much work must this force do to stop the wheel? Answer in units of

    asked by Amber on April 20, 2012
  41. Science

    When energy changes forms, the total amount of energy is conserved. However, the amount of useful energy is almost always less than the total amount of energy. Explain the energy conversions and unwanted energy that might be produced by the hinges of a

    asked by Elijah on January 5, 2011
  42. math

    Classify the pair of angles Adjacent and supplementary Adjacent and complementary Vertical and supplementary Vertical and completementary At a 35 and 55 degree angle

    asked by supergirl on January 11, 2019
  43. Math

    If a circle is inscribed in a triangle with vertex angles 30o - 60o - 90o , then what is the area of the triangle divided by the area of the circle?

    asked by Judy on May 9, 2014
  44. Trigonometry

    Find the magnitude and direction of the resultant of two forces of 250 pounds and 45 pounds at angles of 25 degrees and 250 degrees with the x-axis, respectively.

    asked by Anonymous on March 9, 2008
  45. Mathematics

    If triangle ABC and triangle XYZ,if angle A and angle X are acute angles such thay cosa=cosx then show that angle A=angle X?

    asked by Sai Manogna on April 14, 2017
  46. maths

    The parallel sides of a trapezium have lenghts 5cm and 8cm..The other two sides have the lenghts 6cm and 4cm..Find the angles of the trapezium?

    asked by Ambis on March 22, 2016
  47. Algebra 1

    "The sum of two measures of two angles is 180 degrees. What is the measure of each angle if one angle is 30 degrees more than twice the other?" would the equation be: x+(2x+30)=180 ???? if it isn't, please explain! thanks!

    asked by Mel on February 16, 2009
  48. trigonometry

    Find all the angles between 0 degrees and 360 degrees which satisfy the equations a. 8 cos x sin x = sin x b. 5 tan^2 y + 5 tan y = 2 sec^2 y.

    asked by lindsay on April 21, 2012
  49. Tokak

    The parallel sides of a trapezium have lenghts 5cm and 8cm..The other two sides have the lenghts 6cm and 4cm..Find the angles of the trapezium?

    asked by Ambis on March 22, 2016
  50. math

    At 10:00 AM, a car leaves a house at a rate of 60 mi/h.At the same time, another car leaves the smae house at a rate of 50 mi/h in the opposite direction. At what time will the cars be 330 miles apart? I tried to make a equation, 50h+60h=330. I divided 330

    asked by robert on October 23, 2007
  51. math

    At 10:00 AM, a car leaves a house at a rate of 60 mi/h.At the same time, another car leaves the smae house at a rate of 50 mi/h in the opposite direction. At what time will the cars be 330 miles apart? I tried to make a equation, 50h+60h=330. I divided 330

    asked by robert on October 23, 2007
  52. vapor pressure

    The total pressure in a flask containing air and ethanol at 25.7C is 878 mm Hg. The pressure of the air in the flask at 25.7C is 762 mm Hg. If the flask is immersed in a water bath at 450C, the total pressure is 980 mm Hg. The vapor pressure of ethanol at

    asked by yayhawknelson on January 19, 2007
  53. statistics

    Q. The MBA department is concerned that dual degree students may be receiving lower grades than the regular MBA students. Two independent random samples have been selected. 100 observations from population 1 (dual degree students) and 100 from population 2

    asked by jeen on November 29, 2010
  54. math/economics in calculus

    The average cost of manufacturing a quantity q of a good, is defined to be a(q) = C(q)/q. The average cost per item to produce q items is given by a(q) = 0.01q2 − 0.6q + 13, for q >0. I know that the total cost is 0.01q^3-0.6q^2+13q What is the minimum

    asked by Jasmine on November 5, 2015
  55. engineering science

    Given the circuit below with unknown voltage source and a voltage drop of 2.233 v Volts on resistor R3, with (R1 = 2KΩ, R2 = 1KΩ, R3 = 3.3KΩ, R4 = 4.7KΩ, R5 = 4.7KΩ). Calculate and complete the table below.

    asked by dan on October 15, 2018
  56. Math

    Ineed to come up with an EXCEL formula for the following; Ineed to determine the total number of games. I know the % (games) of lost and I know the number of (game) wins. I need to determine the total number of games. I can figure the % of wins by

    asked by Michelle on February 2, 2011
  57. Math

    1.)Suppose you interview 10 randomly selected workers and ask how many miles they commute to work. You'll compute the sample mean commute distance. Now imagine repeating the survey many, many times, each time recording a different sample mean commute

    asked by Elie on March 16, 2011
  58. 7th grade math

    Can you check the following? 10. A store pays $10 for a bracelet, and the markup is 115%. A customer will also pay 5 1/2% sales tax. What will be the total cost of the bracelet to nearest cent? t = 1.15 x 10 t = $11.5 (markup price) t = $10 + 11.5 t =

    asked by Alexis on January 16, 2015
  59. Physics

    To save fuel, some truck drivers try to maintain a constant speed when possible. A truck traveling at 110.0 km/hr approaches a car stopped at the red light. When the truck is 211.7 meters from the car the light turns green and the car immediately begins to

    asked by Yarielis on March 2, 2014
  60. Physics

    A special pulley has two discs with radii R1 = .8 m and R2 = .35 m. A rope from the R2 disc connects the pulley to a wall and a rope from the R1 disc connects the pulley to a hanging mass. The axle is frictionless. The total mass of the pulley is 15 kg. a.

    asked by Charlie on April 23, 2012
  61. HELP i dont get it

    The producer of X is contemplating a price change and has asked for your advice. After some empirical investigation, you conclude that the price elasticity of demand for X is 0.75. Your advice to the producer is to Increase price to raise total revenue.

    asked by john on November 1, 2010
  62. Urgent--Geometry(trig part)

    So I am new to sine, cosine, and tangent, so I need some help. Just explain it. No need for the answers unless you want to give it to me. :D Let triangle ABC be a right triangle with angleC=90degrees. Given the tangent of one of the complementary angles of

    asked by Anonymous on March 2, 2017
  63. Algebra

    Keiko is a software saleswoman. Let represent her total pay (in dollars). Let represent the number of copies of History is Fun she sells. Suppose that and are related by the equation . Answer the questions below. Note that a change can be an increase or a

    asked by James on March 27, 2014
  64. geometry

    The total surface area of a rectangular solid is the sum of the areas of the six faces. If each dimension of a given rectangular solid is doubled, what effect does this have on the total surface area?

    asked by Jen on October 1, 2018
  65. geometry

    I found the volume of six cubes to total 336 cubic inches. How do I change the volume to surface area? I need to find the Find the total Surface Area

    asked by JOY on May 25, 2011
  66. Choctaw Middle School

    Admission to a circus is $16 for adults and $10 for children write an expression to find the total cost of 3 adult tickets and four children's tickets then find the total cost

    asked by Kylie on September 1, 2015
  67. math

    A hardware supplier manufactures three kinds of fasteners, type A,B and C. Production restrictions require it to make 10 units more of type C than the total of the other types and twice as many type B as type A. The shop must produce a total of 490 units

    asked by Anonymous on October 31, 2012
  68. please check my grammar

    AN.15,2016 From: Genecito Jimenez Dear sir/madam, The JIMENEZ INTERNET CAFE has been operating the business started last Oct.15,2015. There are 14 computers for the clients and 1 computer for server with the total of 15 pc's. The total amount of expenses

    asked by jessie on January 15, 2016
  69. Math accelerated

    A decorative floor pattern has 1red square tile surrounded by 12 blue tiles.write and evaluate an expression to show how many total red and blue tiles are needed if there are 15 red tiles. Then make a table showing the total number of tiles if there are

    asked by Jeontae on August 24, 2015
  70. Physics

    I'm having trouble where to start with this question.. Any help would be helpful. A projectile is fired with an initial speed of 75.2 m/s at an angle of 34.5° above the horizontal on a long flat firing range. Determine (a) the maximum height reached by

    asked by LINA on January 18, 2016
  71. accounting

    Item: Raw Materials (cost for hamburgers) Total Annual Cost: 650 Item: Building Rent Total Annual Cost: 9000 Identify which cost item above is fixed and variable and why

    asked by vdan on November 16, 2007
  72. math

    Total hours: 42 (including 4 hrs sick leave, 6 hrs travel) Week 2 — Total hours: 46 (including 5 hrs travel)What percentage of the recorded time did the worker spend traveling?

    asked by nita on July 18, 2012
  73. algerbra 1

    Antartica comprises about 10.5% of the total land area on earth. antartica has a surface area of about 5,400,000 square miles. what is the total land area on earth? write an equation and slove.

    asked by miranda on September 26, 2010
  74. math

    At a street fair, a vendor keeps her stall open 6 hours per day. She also spends a total of 4 hours over the course of the fair setting up. Let d represent the number of days of the fair and h represent the total hours spent at the fair.

    asked by spencer on September 28, 2016
  75. Geometry

    True or False? In an obtuse triangle all the angles are obtuse. I think it's false but I'm not sure.

    asked by Andrea on May 5, 2015
  76. Geometry

    The sides of one triangle are twice as long as the corresponding sides of a second triangle. What is the relationship between the angles?

    asked by Susey on March 26, 2017
  77. math

    The sum of 2 angles is 90. The measure of one angle is 1 1/2 times the measure of each angle

    asked by lisa on August 27, 2012
  78. TRIG

    Half angles in trig (square root(1-square root(21)/5)/2)

    asked by Renee ( PLEASE HELP ME) on April 22, 2014
  79. math

    if an angle of parallelogram is two third of its adjacent angle,find the angles of the parallelogram

    asked by zeeshan on August 11, 2016
  80. math

    if angle pqr=1 1/2 right angles find the reflex angle pqr

    asked by tia on January 11, 2017
  81. math

    A triangle having three equal sides is necessary and sufficient for a triangle having three equal angles

    asked by Anonymous on September 6, 2014
  82. math

    Angles X and Y are congruent. Angle X has a degree measure of 15. What is the measure of angle Y?

    asked by angel on September 2, 2011
  83. Geometry

    This is Parallel lines and angles. The measure of angle (3x+17)? the measure of angle (4x+12)?

    asked by Holly on October 14, 2007
  84. pre algebra check

    The measures of two angles of a triangle are given. Tell whether the triangle is acute, right, or obtuse. 19°,35° I think its obtuse

    asked by amy on May 29, 2012
  85. physics

    a car traveling at 30.0m/s undergoes a constant negative accerleration of magnitude of 2.00m/s^2 when the brakes are applied. how many revolutions does each tire make before the car comes to a complete stop,assuming thaat the car does not skid and that the

    asked by nay on February 23, 2009
  86. physics

    An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. If a 19.2-V potential difference is applied to these plates, calculate the following: (a) the electric field between the plates,

    asked by andrew on May 18, 2012
  87. Math

    Select any concept from this week.(Linear equations,exponents, Logarithmic problems Write a 350- to 700-word response in which you examine the importance and applicability of this concept. Describe why this concept is important and how it can be applied to

    asked by Tiara on March 29, 2012
  88. the percent equation

    1. find 30% 0f 70 2 what is 80% of 65 3 what percent of 56 is 14 4 36 is what percent of 40 5 80 is 40% of what number? 6 65% of what number is 78 7 what percent of 2000 is 6 8 12 is what percent of 4000 9 what percent of 3000 is 18 10 what is 110% of 80

    asked by Fabian on January 27, 2009
  89. math

    In a factory of electronic items, the total cost of production, expressed in thousands of dollars, is given by the function C(x)= (x^2-x+2)/x+1 where x belongs to [0;5] and expressed in hundrends of items produced. 1) calculate in dollars the total cost of

    asked by Jessy on January 1, 2011
  90. Physic

    A bar has a constant cross sectional area A. The bar is devided in 2 segments segment 1 (1/3 of the bar) and segment 2 (2/3 of the bar). Segment 1 is made of a material with mass density ρ and Young's modulus E. Segment 2 is made of a different material,

    asked by Eatingapple on May 23, 2013
  91. chemistry

    so we did a chemistry lab to find the relationship between temperature and volume or charle's law. In the experiment, i got t1v1=372K, 267.2 cm^3 t2v2=277K,169.1 cm^3 so i graphed that THen they told us to chose 2 other points from that line, TaVa and TbVb

    asked by X on May 5, 2011
  92. Math

    The measure of (Angle) A is 4 degrees greater than the measure of (Angle) B. The two angles are complementary. Find the measure of each angle. (I tried 41+45 but that didn't work out, anyone got any steps to solve this?)

    asked by Katelyn on November 13, 2017
  93. math

    Find the z-score for the given raw score, mean, and standard deviation. Assume a normal probability distribution score = 15, ì = 16 , and ó = 2 Could you show me how to do this. My instructor has tried but I just don't understand how to do it and I have

    asked by sam on August 23, 2009
  94. Physics

    A space station is designed so that people can walk on the inside of the outer wall and feel their normal weight. The station is to be 750 m in diameter. What is the period of the station's rotation?

    asked by Juan on February 25, 2018
  95. statistics

    The lifetime of a 2- volt non- rechargeable battery in constant use has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours. What is the z-score for batteries with lifetimes of 600 hours?

    asked by Gee on September 6, 2012
  96. physics

    1- An elevator, when fully loaded, has a mass of 5500 kg. The elevator needs to accelerate anywhere from 2.7 m/s^2 [D] to 2.7 m/s^2 [U]. What is the maximum tension force that the elevator cable will need to support during normal use? can we use fnet

    asked by Anonymous on October 26, 2014
  97. statistics

    For a normal distribution with a mean of 140 and a standard deviation of 55 find each value requested. a. What is the minimum score needed to be in the bottom 10% of the distribution? b. What scores form the boundaries for the middle 75% of the

    asked by tammy on April 29, 2012
  98. statistics

    The lifetime of a 2- volt non-rechargeable battery in constant use has a normal distribution of 516 hours and a standard deviation of 20 hours. What is the z- score for batteries with lifetimes of 520 hours?

    asked by Gee on September 6, 2012
  99. Math

    Use the normal distribution of weights of adult men, which has a mean of 170 pounds and a standard deviation of 7.5 pounds. Use the z-score chart to find the percentage of heights less than 155 pounds.

    asked by Edwin on November 17, 2016
  100. Physics HELP

    In a downtown office building you notice that each of the four sections of a rotating door has a mass of 90 kg. What is the width of each section of the door if a force of 58 N applied to the outer edge of a section produces an angular acceleration of

    asked by Jeff on November 15, 2017