Questions Asked on
April 17, 2015

  1. Language Arts

    1. The word aloof is an English word borrowed from Dutch. Its meaning is "at a distance." In which of the following sentences is the word used correctly? Anne's sociable nature mad her aloof in new situations When he first arrived at the Secret Annex,

    asked by Hailee
  2. Math

    7. You are having a discussion about sequences with your classmate. She insists that the sequence 2, 3, 5, 8, 12 must be either arithmetic or geometric. Is she correct or incorrect? Explain.

    asked by Alex
  3. geometry

    The figure shown is a rectangle. the green shape in the figure is a square. The blue and white figures are rectangles, and the area of the blue rectangle is 24 square inches. a. write an expression for the area of the entire figure that includes an

    asked by catsanddogs
  4. Chemistry

    Is PbI2 soluble in water or not? Following the solubility rules for ionic compounds, salts containing Pb are insoluble and iodide salts are soluble, so can it be both?

    asked by Ally
  5. Health

    __________ supervision means you keep your children in your view when they are in or near water? A. Active B. Quiet C. Loud D. Adult***

    asked by Abby
  6. math

    Simplify 6P2 A.30**** B.15 C.12 D.720 Simplify 8c5 A.6,720 B.336 C.56**** D.10

    asked by matt
  7. Math Help ASAP

    A movie complex has eight different movie theaters. The manager of the complex wants to conduct a survey to determine which snacks to add to the menu. Which represents the best sample the manager could use for the survey? Survey the first 100 moviegoers

    asked by YOLO
  8. calc

    Suppose that an accelerating car goes from 0 mph to 58.6 mph in five seconds. Its velocity is given in the following table, converted from miles per hour to feet per second, so that all time measurements are in seconds. (Note: 1 mph is 22/15 feet per sec =

    asked by Anonymous
  9. Science

    "Earth's energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then describe the ideal source of energy for generating most of your home's electricity, and explain why you

    asked by Priscilla
  10. math

    How much money must be invested at 6.3 % simple interest to earn $250 in interest each month?

    asked by Gina
  11. physics

    1 The specific heat of a substance at its boiling point or melting point Is 0 Is infinity Is negative lies between 0 and 1 2 A unit mass of solid converted to liquid at its melting point. Heat is required for this process is Specific heat Latent heat of

    asked by solomon
  12. Science

    Every individual, including young people, can make decisions to use resources wisely. Use the terms reduce, reuse, and recycle to explain how the students in the image can help minimize solid waste. PLEASE HELP!!!!!!

    asked by Priscilla
  13. English

    1. When taking notes from your sources, you should also ________. A. revise your research question B. write the information needed for your works cited list C. format your paper and works cited list D. find a topic for your research paper 2. Academic

    asked by Jay
  14. math

    On the grid,draw and label an aquarium shaped like a rectangular prism with a volume of 8,000 cubic in. HINT A CUBE I is a rectangular prism, and 2x2x2=8

    asked by precilla
  15. math

    Jody checked the temperature 12 times on Monday, and the last digit of the temperature was odd six times more than it was even. On Tuesday, she checked it 18 times and the last digit was odd eight times more than it was even. Determine which series is

    asked by SUE
  16. Chemistry

    Benzene, C6H6, reacts with nitric acid, HNO3. Two products are formed, one of which is water. The second product has a molar mass of 213 grams. The second product is composed of 33.8% carbon, 1.42% hydrogen, 19.7% nitrogen, and 45.1% oxygen. Write a

    asked by Melissa
  17. physics

    A charged particle is observed traveling in a circular path of radius R in a uniform magnetic field. If the particle was traveling twice as fast, the radius of the circular path would be 8R. R/4. R/2. 2R. 4R. expanation lso

    asked by titu
  18. Physics

    Two plane mirrors are positioned at right angles to one another. A ray of light strikes one mirror at an angle of 30° to the normal. It then reflects toward the second mirror. What is the angle of reflection (from the normal) of the light ray OFF the

    asked by Diana
  19. ss

    the aztec capital of tenochtitlan stood on the present-day A.Los Angeles B.Panama City C.Mexico D.Tikal

    asked by joshua
  20. english

    Which sentence is the most grammatically correct and clear version? Superman announced that he could leap over buildings in a single bound, which was a very risky thing to do. It was risky for Superman to announce that he could leap over buildings in a

    asked by Titan
  21. statistics

    Of the 6796 students in one school district, 1537 cannot read up to grade level. Among a sample of 812 of the students from this school district, 211 cannot read up to grade level. Find the sample proportion of students who cannot read up to grade level.

    asked by Jane
  22. algebra

    1. a chemical compound requires 8 ounces of chemical a and 12 ounces of chemical b. a mixture contains 24 ounces of chemical a and 30 ounces of chemical b. how can you fix the mixture to make the chemical compound? 2. in an animal shelter, the ratio of

    asked by leya
  23. type of reaction

    what type of reaction is ammonium nitrate? HNO3(aq) + NH3(l) --> NH4NO3(aq)

    asked by help me
  24. troduction to computer

    you call the help desk to report a problem you are having on your computer. The technician asks you what operating system you are running . you know it is windows 7 but you forget which version. how can you find out

    asked by Anonymous
  25. PRE - CALCULUS

    A statement Sn about the positive integers is given. Write statements Sk and Sk+1, simplifying Sk+1 completely. Sn: 1 + 4 + 7 + . . . + (3n - 2) = n(3n - 1)/2

    asked by Ciara
  26. Math

    School A has 480 students and 16 classrooms. School b has 192 students and 12 classrooms. A. what is the ratio of students to classrooms at School A? 480:16 B. what is the ratio of students to classrooms at School B? 192:12 C. How many students would have

    asked by Jay
  27. Chemistry

    If 0.605 g of magnesium hydroxide reacts with 1.00g of sulfuric acid, what is the mass of magnesium sulfate produced? Mg(OH)2(s)+H2SO4(l)→MgSO4(s)+H2O(l) .605g Mg x 1molMgSO/1molMg=.605g MgSo 1.00g MgSO/1mol H2SO4=1.00g MgSO .605g+1.00g=1.605g This is

    asked by Jessica
  28. physics

    A hawk flies in a horizontal arc of radius 12.0 m at a constant speed of 7.1 m/s. It continues to fly along the same horizontal arc but increases its speed at the rate of 7.9 m/s2. Find the acceleration magnitude under these conditions.

    asked by alaa
  29. Social studies

    how was south carolina constitution of 1868 different from earlier versions? A. Representation was based on wealth and population B. Property owners alone could vote C. All men were given the right to vote D. Women were given the right to vote Is it A:)

    asked by Anonymous
  30. chemistry

    What would be the molarity of solution obtained by mixing equal volumes of 30% by mass H2SO4 (d=1.218 g/mL) and 70% by mass H2SO4 (d=1.610 g/mL). If the resulting solution has density 1.425 g/mL, calculate its molarity

    asked by jaimi
  31. math

    John let out 50 foot of kite string when he observes that his kite is directly above a point on the ground 30 feet away from him, how high is the kite ?

    asked by Auriyan
  32. Math

    The sum of two numbers is 70.4. One of the numbers is 9 times the other. What are the 2 numbers?

    asked by Austin
  33. PRE - CALCULUS

    Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20 ...... I NEED HELP WITH THE OTHER TWO PLEASE :) 4 -1 3 | 12 1 4 6 | -32 5 3 9 | 20 1 0 0 0

    asked by Ciara
  34. physics

    If a calculated quantity has units of T • m/A, that quantity could be Answer choices a magnetic torque. 1.0. 2.an electric field. 3.an electric potential. 4.a magnetic field.

    asked by titu
  35. geometry

    What is scale factor for the dilation of segment AB into segment CD? Draw the dilation of segment AB with scale factor 2/3 and label it segment EF. The figure is 2 || segments with point A(3, -3) with B(6,3). Other segment is C(4,-4) with D(8,4). Cant seem

    asked by Jeremy
  36. Algebra

    a car driver accelerates to a speed of 35 miles per hour and then takes her foot off the gas pedal even though she does not press the brake pedal at any time she eventually rolls to a stop which of the following most likely causes the car to come to a stop

    asked by Peter
  37. Algebra

    An object is thrown downward with an initial velocity of 4 feet per second. The relationship between the distance s it travels and time t is given by s = 4t + 16t2. How long does it take the object to fall 72 feet?

    asked by Merty
  38. math

    Of the 6796 students in one school district, 1537 cannot read up to grade level. Among a sample of 812 of the students from this school district, 211 cannot read up to grade level. Find the sample proportion of students who cannot read up to grade level.

    asked by HELP
  39. math

    a cubic container was completely filled with water. when 3/4 of the water from the container was poured into a rectangular tank, the tank became 1/4 full. the capacity of the tank is 1.024 liters more than that of the cubic container. Find the length of

    asked by stacy
  40. Civics

    Which best describes how the money that individuals have in savings accounts affects the economy? A. The money in savings accounts is used for daily expenses like food and gas which keep the economy going. B. The money in savings accounts just sits in the

    asked by Student
  41. PRE - CALCULUS

    A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 2+5+8+...+(3n-1)=n(1+3n)/2

    asked by Ciara
  42. Science

    why is it important biodiversity? A. preservation of biodiversity prevents the extinction of species B. preservation of biodiversity increases the amount of fossil fuels formed in a shorter period of time. c. preservation of biodiversity disturbs the

    asked by Priscilla
  43. Civics

    Which best describes how the money that individuals have in savings accounts affects the economy? 1. The money in savings accounts is used for daily expenses like food and gas which keep the economy going. 2. The money in savings accounts just sits in the

    asked by Student
  44. Physics

    A tiny source emits sound uniformly in all directions. The intensity level ar a dist. Of 2m is 100dB. How much sound power is the soure emitting?

    asked by Dean
  45. English

    1. A research paper has which of the following aspects in common with an essay? A. a title page B. a works cited list C. body paragraphs with topic sentences D. personal experience as a primary source 2. When citing all sources, which answer lists the

    asked by Jay
  46. Science

    Multiple Choice 1. Which of the following is a chemical change? (1 point) boiling of water melting a cube of ice dissolving 10 grams of salt in water splitting water into hydrogen and oxygen * 2. What is the mass of water that results from combining 2.0 g

    asked by Pauly
  47. physics

    A 3.6 -kg mass attached to the end of a string swings in a vertical circle (radius = 17.9 m). When the string is horizontal, the speed of the mass is 3.8 m/s. What is the magnitude of the force of the string on the mass at this position?

    asked by alaa
  48. physics

    Two 75.0 kg hockey players skating at 5.60 m/s collide and stick together. If the angle between their initial directions was 115°, what is their velocity after the collision? (Let the motion of player 1 be in the positive x-direction and the motion of

    asked by alexa
  49. Physics

    A person whose eyes are 1.50 m above the floor stands in front of a plane mirror. The top of his head is .10 m above his eyes. How far above the floor should the bottom edge of the shortest possible mirror be placed? I know that I need to take half of a

    asked by Diana
  50. Calculus

    A Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 31 feet? A = x(31/2-1/4 (2+pi)

    asked by Ryan kustin
  51. math

    Flipo is building a rectangular sandbox for his younger brother.The length of the sandbox is 1 foot longer than twice the width of the sandbox. The perimeter of the sandbox is 29 feet

    asked by asia
  52. physics

    Through beta decay, 55Cr (Chromium‑55 –with mass 54.94080 u) emits an electron (0.00055 u) leaving a daughter nucleus of 55Mn (manganese‑55 with mass 54.93800 u). a) How many different particles to we get out of this reaction b) How much energy in

    asked by Emily
  53. Algebra (check my work?)

    1. Write a proportion using an unknown value x and the ratio 5:6 then solve it. 5/6 = x/12 6 * 2 = 12 5 * 2 = 10 x = 10 2. In an orchestra, the ratio of trombones to violas is 1 to 3. There are 9 violas, Write a proportion that gives the number t of

    asked by Ivy
  54. chemistry

    What is the normality and nature of a mixture obtained by mixing 0.62 g of Na2CO3 •H2O to 100mL of 0.1N H2SO4?

    asked by jaimi
  55. chemistry

    A piece of Al weighing 2.7g is titrated with 75 mL of H2SO4 (sp.gr. 1.18 g/mL and 24.7% H2SO4 by mass). After the metal is completely dissolved the solution is dilute to 400mL. Calculate molarity of free H2SO4 in solution.

    asked by jaimi
  56. chemistry

    Sulfur dioxide and oxygen gases react at high temperature (400 o C) in the presence of a catalyst(like Pt) to form sulfur trioxide gas. The reaction is started from a gas mixture at 400oC with the partial pressures PSO2 = 15 atm and PO2= 10. atm. What will

    asked by David
  57. Algebra

    Solve the equation. Use factoring or the quadratic formula, whichever is appropriate. Try factoring first. If you have any difficulty factoring, then go right to the quadratic formula. (Enter your answers as a comma-separated list.) (x+2)^2 + (x-7)(x-2)=16

    asked by Merty
  58. Help with Psychology

    To help Karen overcome her fear of thunderstorms, a behavior therapist asks her to relax and imagine watching light rain with distant thunder. The therapist is using... a) client-centered therapy b) cognitive therapy c) systematic desensitization d)

    asked by Henry
  59. Physics

    Water flows through a 4 cm diameter garden hose at a velocity of 2 m/s. What is the velocity of the water if a nozzle is used with a diameter of 0.5 cm?

    asked by Jason A.
  60. chemistry

    If 0.605 g of magnesium hydroxide reacts with 0.900g of sulfuric acid, what is the mass of magnesium sulfate produced? Mg(OH)2(s)+H2SO4(l)→MgSO4(s)+H2O(l)

    asked by Anonymous
  61. Programming logic and design

    Using python write a program that does the following: •Create the logic for a program that calculates and displays the amount of money you would have if you invested $3000 at 2.65 percent interest for one year. •Create a separate method to do the

    asked by Christina
  62. College Accounting

    The Thompson Company uses activity-based costing to determine product cost. Three activities and their rates have been calculated as shown below. Setting up equipment = $500 per setup Moving goods = $20 per move Machining = $4 per machine hour Thompson

    asked by K
  63. Accounting/Finance

    Temte Corporation is authorized to issue 1,000,000 shares of no-par common stock and 250,000 shares of 6 percent, $25 par value, cumulative preferred stock. These events affected stockholders’ equity during the first year of operations: 1. 125,000 shares

    asked by Lauren
  64. pre-calc

    Use mathematical induction to prove that the statement is true for every positive integer n. Show your work. 2 is a factor of n2 -n+2

    asked by Ciara
  65. Algebra

    Solve each equation using the quadratic formula. (Enter your answers as a comma-separated list.) x^2-2x+2=0

    asked by Merty
  66. 4th Grade

    Timmy's birthday is 53 days away. Which of these is greater than 53 days? A. 3 weeks B. 2,400 hours C. 1 month D. 240 hours

    asked by BUB
  67. math

    Suppose you want to build an outdoor rectangular pen enclosed by fencing for a pet. You want the pen to have an area of 64 square feet. Write and post one set of dimensions that could be used for the pen, along with the perimeter of the pen.

    asked by maria
  68. physics

    a tennis ball is hit vertically upwards with a velocity of 20m/s. what is it's Decelaration as it moves upward? calculate the maximum height reached by the ball.

    asked by Juliet king
  69. Health

    what should you refrain from doing while helping a friend or family member who is being abused? A) Confront the abuser on behalf of your friend or family member. B) Encourage your friend or family member to seek help or guidance from others. C) Tell your

    asked by Ellie_Fan
  70. physics

    A man walks 5.0m due east and then 10.0m N30oE . Find his resultant displacement

    asked by dave
  71. chemistry

    Hydrogen gas (7.0 mL) is mixed with chlorine gas(4.0 mL) at a certain pressure and temperature. A reaction between H2and Cl2 is initiated by UV light. If pressure and temperature are kept constant, which gases and in which volumes will be found after the

    asked by David
  72. statistics

    Jody checked the temperature 12 times on Monday, and the last digit of the temperature was odd six times more than it was even. On Tuesday, she checked it 18 times and the last digit was odd eight times more than it was even. Determine which series is

    asked by HELP
  73. physics

    A 1.7 -kg object attached to the end of a string swings in a vertical circle (radius = 80 cm). At the top of the circle the speed of the object is 26.0 m/s. What is the magnitude of the tension in the string at this position?

    asked by alaa
  74. Math

    A toy manufacturer produces action figures and packages them into small boxes. The distribution center then puts them in larger boxes to ship them to stores. 1.) Decide which box can ship the most action figures. 2.) How many action figures fit in the box?

    asked by Abby
  75. physics

    Procedure 1: Forming Real Images with a Converging Lens a) Obtain the focal length f of the small converging lens by focusing the image of a distant light bulb on the cardboard screen. Mount the lens and the screen on the meter stick. Position the screen

    asked by titu
  76. math trigonometry

    A ladder 8.5m long is placed with its foot at a distance of 4m from the wall of a house and just reaches a window will . find the height of a window will and the sine and tan of the angle which the ladder makes with the wall

    asked by priya
  77. physics

    Calculate the magnitude and direction of the electric force if a charge of −3.5 × 10−7 C is placed in a field of 12 N/C [right].?

    asked by zeeabadin
  78. maths

    four ribbons measuring 4m,18m,22m and 26m respectively are to be cut into piece of equal length. 1)find the least no. of piece tat can be obtained? 2)what is the length of each piece?

    asked by megha
  79. Math

    Kick is family drank a total of 42.5 gallons of milk in Jan and Feb. her family drank 5.3 gallons more milk in Feb than Jan. How many gallons of milk did kilos family drink in February?

    asked by Austin
  80. PRE - CALCULUS

    A woman works out by running and swimming. When she runs, she burns 7 calories per minute. When she swims, she burns 8 calories per minute. She wants to burn at least 336 calories in her workout. Write an inequality that describes the situation. Let x

    asked by Ciara
  81. Science

    which of the following would have the greatest force? •an object with low mass accelerating slowly •an object with low mass accelerating quickly •an object with high mass accelerating quickly •an object with high mass accelerating slowly (and yes i

    asked by Anon
  82. Algebra

    Use the properties of exponents to simplify the following as much as possible. Assume the bases are positive. (8a^3b^6)^(1/3) / (16a^8b^−4)^(1/4)

    asked by Merty
  83. Chemistry

    Okay so in our class we did an ice cream lab where we use Ziploc bags to make ice cream. We made an ice cream mixture and then put it into a smaller Ziploc bag. Then we got a large Ziploc bag and placed ice in it and placed the bag with the ice cream

    asked by Jessica
  84. math

    Sally has a balance of $2845 on her credit card. What rate of simple interest is she being charged if she must pay $26.19 interest for the 12 days her payment is late?

    asked by Gina
  85. Physics

    Suppose 2100 J of heat are added to 3.3 mol of argon gas at a constant pressure of 120 kPa. (Assume that the argon can be treated as an ideal monatomic gas.) A) Find the change in internal energy. B) Find the change in temperature for this gas. C)Calculate

    asked by sarah
  86. Algebra

    Solve the following quadratic equation by completing the square. (Enter your answers as a comma-separated list.) a^2-12a+52=0

    asked by Merty
  87. math

    A study of two types of weed killers was done on two identical weed plots. One weed killer killed 15% more weeds than the other. This difference was significant at the 0.05 level. What does this mean? A. The improvement was due to the fact that there were

    asked by BOB
  88. Stream Physics Hydrology - HELP!!!!

    1a) An aqueous solution containing 35 kg of endosuflan insecticide is accidentally released into a small stream. The stream dimensions are 17.5 meters wide and 1.15 meters deep. The stream velocity is 1.1 m/s. The stream channel drops 24m over a distance

    asked by Kelly
  89. programming

    Using python write a program that does the following: •Create the logic for a program whose main() method prompts a user for 1000 numbers and stores them in a list. •Pass the array to a method that reverses the order of the numbers. •In the main

    asked by Christina
  90. s.s

    the legislative branch of the federal government made up of the (Congress/Supreme court)

    asked by ashley
  91. math

    Kerry states laps around the playground. The playground is 150 meters and 50 meters wide. How many laps will it take Kerry to state 1 km?

    asked by Anonymous
  92. physics

    A honeybee with a mass of 0.175 g lands on one end of a popsicle stick (Active Example 9-2). After sitting at rest for a moment, the bee runs toward the other end with a velocity 1.75 cm/s relative to the still water. What is the speed of the 5.00 g stick

    asked by alexa
  93. Math

    Jon is participating in a 6 mile run/walk for charity. If she completes the course & runs at least 1/2 the distance then write an equality for walking

    asked by Ali
  94. physics

    To balance a 29.8 kg automobile tire and wheel, a mechanic must place a 58.2 g lead weight 25.0 cm from the center of the wheel. When the wheel is balanced, its center of mass is exactly at the center of the wheel. How far from the center of the wheel was

    asked by alexa
  95. Math

    So I am supposed to solve this without using a calculator: Sqrt[20]/10 - Sqrt[10]/Sqrt[32] - Sqrt[0.3125] + Sqrt[3 + 1/5] You can put this into WolframAlpha as is to make it prettier. Answer given is 1/2 * SQRT(5) I really don't know where to start here. I

    asked by Mr.AMG
  96. pre-calc - JAI

    Solve the system of equations using matrices. Use Gaussian elimination with back- substitution. x+y+z = -5 x-y+3z = -1 4x+y+z = -2

    asked by Ciara
  97. Math 222

    need help understanding exponents using the product rule/ Simplifying Radicals. (a^1/2 b)^1/2 x (ab^1/2)

    asked by Maxine
  98. algebra

    the weight (in kg) of each student in a group of students is 9 times his height (in feet) write a linear equation with x representing the height (in feet) and y representing the weight i kg of the student

    asked by shan
  99. Maths

    Virti had 600 rupees. She spent 2/3 on buying a t-shirt and 1/5 of remaning money on buying hair clips. With how much money is she left with

    asked by Piyush
  100. Analytic and Solid Geometry

    Find the point on the y-axis that is equidistant from (5 ,1) and (-3 -1). The answer is (0,4) but I don't know the process.

    asked by MIKA
  101. Vectors

    What is the distance between the parallel lines having equations 2x+2y=16 and x+y=0? I'm getting 2 as my answer but the answer is supposed to be 4√2

    asked by Sara
  102. math

    Kerry states laps around the playground. The playground is 150 m long and 50 m wide. How many laps will it take Kerry to skate 1 km?

    asked by Anonymous
  103. Algebra

    Solve each equation using the quadratic formula. (Enter your answers as a comma-separated list.) x^2 -2x +10=0

    asked by Merty
  104. physics

    Answer the following question:Be sure to show all work. Include formulae and units.Be sure to include relavant, meaningful diagram and a complete circuit diagram with circuit related problem. take enough space, don't try to squeeze everything on a small

    asked by titu
  105. physics

    A 30-caliber rifle with a mass of 2.94 kg fires a 9.73- g bullet with a speed of 666 m/s with respect to the ground. What kinetic energy is released by the explosion of the gunpowder that fires the bullet? (Note there is a tolerance 0.1 percent for the

    asked by titu
  106. Algebra

    Find an equation that has the given solutions. (Assume the equation has a degree of 3.) x = −5, x = 5, x = 2/3

    asked by Merty
  107. Socials

    I have to write a 100 word story(yes, insane) including all the key terms affiliated with the merging of Hudson's Bay Company and Northwest Company. I am thinking of writing it from the perspective of a Metis... what would I feel about this merge?

    asked by Brielle
  108. Physics

    Proove a*sin(x)+b*sin(x+phi)=((a+b)^2*cos(phi)^1/2*sin(x+phi/2)

    asked by Anonymous
  109. math

    When 15 is subtracted from a number,the anwser is the same as when the number is divided by 6.

    asked by harry
  110. Math

    The angle of depression from the top of a building to a point 30 meters from its base is 24 degree. 1. Represent the above information in a diagram. 2.Calculate the height of the building.

    asked by Samantha Scott
  111. Math

    A ranger at forest station A( located at latitude N47 and longitude W116 30') sights smoke from a fire in the direction of S35 36'W. At the same time a ranger at forest station B(located at latitude N48 and longitude W117 45') sights the same fire in the

    asked by Guillermo
  112. physics

    An elastic collision occurs between two air hockey pucks in which one puck is at rest and the other is moving with a speed of 0.7 m/s. After the collision, the puck initially in motion makes an angle of 20.00 o with its original direction, and the struck

    asked by titu
  113. physics

    An elastic collision occurs between two air hockey pucks in which one puck is at rest and the other is moving with a speed of 0.7 m/s. After the collision, the puck initially in motion makes an angle of 20.00 o with its original direction, and the struck

    asked by titu
  114. Science

    Neglecting air resistance, what is the speed of the object when it hits the ground?

    asked by Kenzie
  115. chemistry

    i'm stumped on how to write this in mathematical form. it says the rate increased by a factor of 2000, I am supposed to determine by what percent the Energy of activation will be reduced. The answer is 25% in the book. I don't know how they get the answer

    asked by jojo
  116. Chemistry

    What is the energy in joules and wavelength in meters of microwave radiation with  = 2.4 ×1011s-1?

    asked by nona
  117. Math 222

    I need help understanding exponents (a^1/2 b)^1/2 x (ab^1/2)

    asked by Maxine
  118. Math

    35 decimeter string is attached to both ends of a 25 decimeter pole. At what point of the string do you need to pull to make a right triangle?

    asked by Mr.AMG
  119. s.s

    what were the two main goals of the constitution's creators? a.create local goverments and elect a president b.establish the 51st state and define borders c. raise taxes to build the treasury and pay off war debts d. protect citizens' rights and defend the

    asked by ashley
  120. Chemistry

    What is the energy and frequency of a photon with a wavelength of 2.57 ×102 m?

    asked by nona
  121. mathematics

    Given triangle DEF with vertices D(-3;6) ,E(-2;-3) and F(x;1) with DE=DF, determine the value of x

    asked by Anonymous
  122. physics

    The Universe expands according to the Hubble's law: velocity is proportional to distance. There must be some distance, therefore, at which the velocity reaches the speed of light. This defines the horizon. The Doppler shift is so huge that the length of

    asked by titu
  123. pre-calc - JAI

    A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 2+5+8+...+(3n-1)=n(1+3n)/2

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  124. Algebra

    Find an equation that has the given solutions. (Assume the equation has a degree of 2.) a=-1/3, a=3/7

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  125. Math

    Hi! Can someone help me with this? Thanks a bunch! Find the 10th partial sum of the following arithmetic sequence. 0.50, 0.9, 1.3, 1.7.....

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  126. biochemistry

    How would you prepare 50ml of 0.2M HCL

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  127. Math

    An artist drew a painting with similar rectangles with whole- number dimensions in inches. the small rectangle is 8 inches by 3 inches. One dimension of the medium rectangle is 9 inches. One dimension of the large rectangle is 32 inches. A. find the

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  128. business finance

    a coy invests 250000 which is expected 2 generate d following cash flow 80000,60000;45000;20000;10000: for 5yrs.wot is d payback period ?

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  129. law

    do you think traffic stops based solely on racial profiling are constitutionally valid?

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  130. fire

    Two line of same flow with different lengths, no elevation find: a. Total friction loss for line A b. Total friction loss for line B c. PDP (pump discharge pressure) for line A d. PDP for line B Layout: Line A=150' of 3" 300gpm combination nozzle Line B=

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  131. English 4

    What was Olaudah Equiano motivation ?

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  132. math

    solve xd^2y/dx^2+y=0 by frobenius method

    asked by assma
  133. Drug interactions

    which drug lessened the effect of warfarin(coumadin)?

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  134. Math

    If a = b + 2l then (b - a)^4 = ? F. -16 G. -8 H. 1 J. 8 K. 16

    asked by Anonymous
  135. Vectors

    why does this equation 3xy +y = 0 represent two planes?

    asked by Sara