sonia

Newest questions posted by sonia
  1. Math

    Charlene takes the bus to work in the morning then walks home for lunch walks back to work and finally walks home in the evening the distance one way is 600 meters how far does she walk each day between home and work
  2. History

    What evidence in the declaration is there of religious faith? How did the religious faith influence the ideas expressed the declaration?
  3. math

    The temperature has been going down at a constant rate. In 8 hours it went down 16 degrees. Which expression best shows the temperature change each hour?
  4. Math

    tell of 100 trays of 100 cookies is greater than, less than, or equal to 1,000?
  5. maths

    using a scale of 1:250 draw an accurate plan of a rectangular garden measuring 25m x 15m.
  6. biology

    A man with brown eyes and dark hairs (whose father was blue eyed),marries a woman with blue eyes and blue curly hairs (whose mother was red straight hair). They have 4 children. What is the genotype of children 1)BbRR:BbRr:bbrr:bbRR 2)BbRR:BbRr:bbRr:bbRR
  7. math

    Kim bought a total of 48 cookies. Each cookie costs $.55, including tax. Of the cookies she bought, 3/8 were lemon cookies. What was the total cost of only the lemon cookies?
  8. Grammar

    This week's "steal of the week" claims that there are hotel specials available in last Vegas for $18.00 a night at several of the casinos
  9. chemistry

    calculate the weight in grams far a given solution of sodium thiosulphate crystals of strength 2.0M
  10. chem

    what mass of zinc will be required to react completely with 100cm3 of a 1.0M hcl.
  11. chemistry

    What mass of NaHCO3 must be added to 100ml H2O to produce a solution with a pH of 10? K1(H2CO3)=4,6*10^-7 K2(H2CO3)=4,4*10^-11 -------- Help! Thank you
  12. math

    the elevation of a tower from a point on the ground is 30 at a point on the horizontal line passing through the foot of the tower and 100 metres nearer it, the angle of elevation is 60 find height of the tower and the distance of the first point from the
  13. maths

    Fuel wood logs sawed 53 times and 72 pieces made. If the cutter saw only one at a time how many there were before cutting?
  14. math

    Estimate 5/30 as a percentage.
  15. math

    Estimate 5/30 as a percent.
  16. math

    After Khalil gave Benjamin 3/5 of the rocks in his collection, Benjamin had 70 rocks. If Benjamin had 25 rocks in the beginning, how many rocks did Khalil have in the beginning?
  17. algebra

    If Will gives Molly $9, he will have the same amount of money as her. If Molly gives Will $9, the ratio of the money she has to the money Will has will be 1 : 2. How much money does Will have in the beginning?
  18. math

    The ratio of Jane's number of soda to Pat's number of soda is 2 to 3. If Jane has 16 cans of soda, how many cans of soda does Pat have?
  19. math

    Greg's number of pencils is 3/5 the number of Tom's pencils. Together they have 56 pencils.How many pencils does Greg have? How many pencils does Tom have? How many more pencils does Tom have than Greg?
  20. math

    Alex's car takes 10 gallons of gas for 20.10 miles. If Shon's car uses 3/10 the amount of gas as Alex's car to travelled, what is the mileage for each person's car? How man gallons of gas would each need to travel 4.5 miles?
  21. math

    A train ran for 6 minutes and 37 seconds in one mile. Another train travelled 7 minutes and 35 seconds in one mile. How long (minutes/seconds) would it take each train to travel 16 miles?
  22. chemistry

    In the sun, nuclear fusion takes place. If the decrease in mass isa 0.006 50g, how much energy is released?
  23. Peel Adult Education Centre

    In the sun nuclear fusion takes place. If the decrease in mass is 0.006 50 g, how much energy is released?
  24. Trignometry

    A calculator is broken so that the only keys that still work are the \sin, \cos, \tan, \cot, \sin^{-1}, \cos^{-1}, and \tan^{-1} buttons. The display initially shows 0. In this problem, we will prove that given any positive rational number q, show that
  25. malay

    How do you respond to these malay questions? Siapakah kawan baik anda di sekolah? Adakah kamu suka akan matapelajaran matematik?Mengapa? Makanan apakah yang paling anda gemari? Adakah anda suka membaca buku novel?
  26. science

    is that electric current occupies space?
  27. Quantum Physics

    Suppose that ψ1 and ψ2 satisfy the time independent Schrödinger equation for some potential. Which of the following necessarily also satisfies the Schrödinger equation? Cψ1ψ∗2 aψ1+bψ2 Aψ1/ψ2 Cψ1ψ2 In accorda
  28. Quantum Physics

    Suppose a particle has wavefunction ψ(x,t=0)=Aexp(−x22l2). What is the average value (expectation value) of p^, ⟨p^⟩, for this state at t=0?
  29. Quantum Physics

    The variance σ2X=⟨(X^−⟨X^⟩)2⟩ of an operator, X^, is a measure of how large a range its possible values are spread over (the standard deviation is given by σ=σ2−−√). Suppose that |X⟩ is an eigenstate of some operator X^, what is the
  30. Quantum Physics

    What is the probability current density of a particle with wavefunction ψ(x,t)=exp(iℏ(px−Et))?
  31. Quantum Physics

    Suppose we have a particle in 1-dimension, with wavefunction Ae−|x|2d. What is the probability to find the particle in the interval [0,d]? Please provide your answer in terms of A, d, mathematical constants such as π (entered as pi) or e (entered as e).
  32. Quantum Physics

    The ground state wavefunction for a particle in a shallow potential well in 1 dimension is of the form: Ae−|x|2d. Given that the particle must be found somewhere in the range x∈[−∞,∞], the born rule then places a constraint on the modulus of A.
  33. Quantum Physics

    Recall how the Schrödinger equation was motivated by the non-relativistic dispersion relation E=p22m. If we follow the same procedure for the case of a relativistic dispersion relation (E2=p2c2+m2c4), what equation do we arrive at? (For simplicity
  34. Physics

    We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
  35. To Reiny, math helper

    can you look at my post, its just 4 math terms I need to figure out, please help
  36. very EASY Math terms Defintions

    Please help someone!!!! a number that can be expressed as the product of 3 equal factors? a number that can be expressed as the product of 2 equal factors product of 1 and a radical product of a rational number and a radical
  37. Math term definitions

    Please help someone!!!! a number that can be expressed as the product of 3 equal factors? a number that can be expressed as the product of 2 equal factors product of 1 and a radical product of a rational number and a radical
  38. Math Definitions

    a number that can be expressed as the product of 3 equal factors? a number that can be expressed as the product of 2 equal factors product of 1 and a radical product of a rational number and a radical
  39. Math ms sue help

    please help me with these defintions of math terms please: a number that can be expressed as the product of 3 equal factors? a number that can be expressed as the product of 2 equal factors product of 1 and a radical product of a rational number and a
  40. Math definitions

    a number that can be expressed as the product of 3 equal factors? a number that can be expressed as the product of 2 equal factors product of 1 and a radical product of a rational number and a radical
  41. math

    walkie talkie phone company charges $18.00 for basic phone service per month and $0.15 per minute for long distance calls. Arena calls charges $80.00 per month with no fee for long distance calls. For what number of minutes of long distance calls is the
  42. math

    there are 36 carpenters in a crew. on a certain day, 29 were present. what percent showed up for work?
  43. math

    find the radius and height of a cylindrical soda can with a volume of 21in^3 that minimize the surface area.
  44. math

    what is the smallest perimeter possible for a rectangle whose area is 1000in^2 and what are its dimensions?
  45. math

    verify that the function satisfies the hypotheses of the mean values theorem on the given interval. then find all numbers c in the given interval that satisfy the conclusion of the mean value theorem. f(x)=2x/x4 [0,3]
  46. english iii

    why did john choose the room in the yellow wallpaper?
  47. maths

    THE Perimeter of a triangle is 2004. One Side of a triangle = 21 Times the other. the shortest side is integral length. SOLVE For lengths of the sides of the traingle in every possible case.
  48. calc

    A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y = 8−x2. What are the dimensions of such a rectangle with the greatest possible area? width= length=
  49. calc

    Find the point on the line 2 x + 6 y + 2 = 0 which is closest to the point ( 2, 0 ).
  50. calculus

    A fence 5 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
  51. calculus

    A fence 5 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
  52. physics

    A particle has an initial horizontal velocity of 2.9 m/s and an initial upward velocity of 4.5 m/s. It is then given a horizontal accelera- tion of 1.2 m/s2 and a downward acceleration of 1.2 m/s2. What is its speed after 4.9 s? Answer in units of m/s
  53. physics

    A bomber flies horizontally with a speed of 225 m/s relative to the ground. The altitude of the bomber is 3010 m and the terrain is level. Neglect the effects of air resistance. The acceleration of gravity is 9.8 m/s2 . a) How far from the point vertically
  54. Science- Chemistry

    In the standard deviation, the decimal place of the first non-zero digit indicates where the precision of the average ends (decimal place where the individual results deviate from each other). All your mass readings have 5-6 significant figures, so one
  55. Science- Chemistry

    A test tube containing a mixture of compounds X, Y, and a small amount of Z weighs 25.4886 g. The tube is emptied into a beaker and the empty tube is reweighed, giving a value of 10.2586 g. The mixture is separated into two components by dissolving in
  56. physics

    A young woman named Kathy Kool buys a sports car that can accelerate at the rate of 4.16 m/s2. She decides to test the car by drag racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 0.58 s before
  57. poe

    When Maggie applies the brakes of her car, the car slows uniformly from 15.9 m/s to 0 m/s in 2.43 s. How far ahead of a stop sign must she apply her brakes in order to stop at the sign? Answer in units of m
  58. PoE

    Turner’s treadmill starts with a velocity of −1.9 m/s and speeds up at regular intervals during a half-hour workout.After 36 min, the treadmill has a velocity of −7.6 m/s. What is the average acceleration of the treadmill during this period? Answer
  59. physics

    A car starts from rest and travels for 5.9 s with a uniform acceleration of +3.0 m/s2. The driver then applies the brakes, causing a uniform deceleration of 1.3 m/s2. If the brakes are applied for 2.1 s, how fast is the car going at the end of the braking
  60. introduction to ethics

    Virtue ethics regards which of these as virtues? (Points : 1) power envy temperance inconsistency
  61. physics

    A man jogs at a speed of 1.7 m/s. His dog waits 1.4 s and then takes off running at a speed of 3.4 m/s to catch the man. How far will they have each traveled when the dog catches up with the man? Answer in units of m
  62. physics

    How long does it take an automobile traveling 64.7 km/h to become even with a car that is traveling in another lane at 53.7 km/h if the cars’ front bumpers are initially 132 m apart? Answer in units of s
  63. Literature

    If you were simeon, what would you write a a five days journal pertaining to your life?
  64. math

    the number has 7 digits it is evenly divided by 00 the value of one of the digits is 60,000 the digit in the hundredth place is both even and prime the digit is the thousands place is 1/2 the value of the digit in the ten thousand place the digit in the
  65. COM/215

    REVISE Studying is hard work many students find they study better when they take regular breaks.
  66. Statistics

    Three cards are drawn with replacement from a standard deck. What is the probability that the first card will be a spade, the second card will be a black card, and the third card will be a queen? Write your answer as a fraction or a decimal number rounded
  67. math

    identify the property that it shown. 2*8*5=2*5*8
  68. Algebra 1

    Can someone tell me the x- and y- intercepts of: x+y=9 Explain how you got the answer please.
  69. math

    tickets to a school play cost 1.5 in advance and 2.0 at gate. by selling all 200 tickets students got $360. how many tickets did they sell in advance?
  70. physics urgent

    A 1.5 m tall man stands 2 m in front of a flat wall mirror. Please find: image distance and height of image I have the formulas but i don't know how to solve this without the focal point or a radius...pls help!!!!!!!
  71. physics

    The magnetic field in the region shown below is increasing by 5 T/s. The circuit shown (with R=25 , C=55 µF, dimensions 1 m by 2 m) is inserted into the region as shown. The capacitor is initially uncharged. 1. How long will it take the capacitor to
  72. physics urgent!

    The magnetic field in the region shown below is increasing by 5 T/s. The circuit shown (with R=25 , C=55 µF, dimensions 1 m by 2 m) is inserted into the region as shown. The capacitor is initially uncharged. 1. What is the current in the circuit at the
  73. urgent physics

    A power line carries a current of 110 A at a location where the Earth's magnetic field has a magnitude of 0.37 Gauss (0.37·10-4 T) and points due north, very nearly parallel to the ground. Find the direction and magnitude of the magnetic force exerted on
  74. health safety and nutrition of young child

    could u please give answers for exam 40553400. i,m not sure about my answers
  75. child day care mgmt

    today ur going to talk about vitamin c with ur class . from which food group you willl choose ur snack?
  76. child care

    in preparing budget for a day care center, you must plan for taxes.as an amployer you must pay part of employees which tax
  77. physics

    Four light bulbs (A, B, C, D) are connected together in a circuit of unknown arrangement. When each bulb is removed one at a time (and subsequently replaced), the following behavior is observed while it is removed: A B C D A rem * on on on B rem on * on
  78. physics

    A point charge of -8.4 µC is at the origin. a)What is the electric potential due to this charge at (x,y) = (3.5 m, 0 m) b) What is the electric potential due to this charge at (x,y) = (-3.5 m, 0 m) c) What is the electric potential to this charge at (x,y)
  79. math

    Paul has grades of 73 and 86 on his first two tests. What must he score on his third test in order to have an average of at least 70?
  80. statistic

    Using the 68-95-99.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: a. Percentage of scores less than 100 b. Relative frequency of
  81. statistic

    1. Which of the following statements are correct? a. A normal distribution is any distribution that is not unusual. b. The graph of a normal distribution is bell-shaped. c. If a population has a normal distribution, the mean and the median are not equal.
  82. statistic

    A data set consist of a set of numerical values. Which if any of the following statements could be correct? a. There is no mode. b. There are two modes. c. There are three modes.
  83. Statistic

    Indicate whether the given statement could apply to the data set consisting of 1000 values that are all different. 1. The 29% is greater then the 30 th percentile. 2. The median is greater then the first quartile. 3. The third quartile is greater then the
  84. physics

    A transformer with 360 turns in its primary coil and 18 turns in its secondary coil is designed to delivered an average power of 1400 W with a maximum voltage of 60 V. What is the maximum current in the primary coil?
  85. geometry

    Given two spheres, if the volume of the first sphere is 36r, and the volume of the second sphere is 288r, what is the relation of the second radius to the first radius?
  86. Pre-algebra

    0.2297=(1/x^2-1/49) I don't get how to solve for x. Pls help stuck on a problem
  87. algebra 1

    which expression is equal to 6(9+2)?
  88. math

    write the place name for the 4 in the following number 3 624 786
  89. math

    round the following number to the nearest ten: 53
  90. Physics

    Let's say I put a very hot 100o C, 41 g cube of aluminum in 71 ml water at room temperature (20o C). What is the temperature of the water after equilibrium occurs
  91. Physics

    I have been working on this homework question for a bit, but I just can't get it. Please help me! Where must an object be placed with respect to a convex lens (f=20cm) to generate an upright image that is 4 times as large as the object? 10 cm in front 10
  92. pre-cal

    what is the vertex and directrix of the parabola y=-1/2x^2 + 10 - 46
  93. math

    find the value of pi in the following: sin pi=cos(pi + 40) sin(80 - pi)=cos pi
  94. help please

    if you are printing an essay on the comuter....can the essay be double line space?
  95. MDM4UO

    A teacher provides pizza for his class if they earn an a average on any test the proability of the class getting an A average on one of his test is 8% What is the probability that the class will not earn a pizza for the firt seven tests? Answer is 0.5578
  96. Clothing and Textiles

    What are thedifferent methods of controlling fullness in a garment. Need pictures
  97. Please Please Help-Physics

    I am having trouble figuring out this question: Part 1: A long staight wire carries a current due East. This wire creates, at point #1, a magnetic field that is derected at 40 deg below due South. From point #1, the wire is located: 50 deg below due North
  98. Physics

    I am having trouble figuring out this question: Part 1: A long staight wire carries a current due East. This wire creates, at point #1, a magnetic field that is derected at 40 deg below due South. From point #1, the wire is located: 50 deg below due North
  99. Phys 2

    I am having trouble figuring out this question: Part 1: A long staight wire carries a current due East. This wire creates, at point #1, a magnetic field that is derected at 40 deg below due South. From point #1, the wire is located: 50 deg below due North
  100. Stoichiometry

    How man liters of hydrogen should have been collected by reacting .045 grams of magnesium?

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