Questions Asked on
February 12, 2012

  1. Chemistry

    The half-life for the process 238 U --> 206 Pb is 4.5*10^9 yr. A mineral sample contains 66.0 mg of 238 U and 16.0 mg of 206Pb. What is the age of the mineral?

    asked by gary
  2. physics

    When a 58g tennis ball is served, it accelerates from rest to a speed of 45m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44cm. What is the magnitude of the net force acting on the ball?

    asked by Natasha
  3. Physics

    At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizontal or x component of the ball's acceleration is 810m/s^2 and the vertical or y component of its acceleration is 110m/s^2. The ball's mass is 0.43kg. what is

    asked by Natasha
  4. Physics3

    Two charged particles of equal magnitude (+Q and +Q) are fixed at opposite corners of a square that lies in a plane (see figure below). A test charge −q is placed at a third corner. If F is the magnitude of the force on the test charge due to only one

    asked by jc
  5. Chemistry

    A solution of 1.50g of solute dissolved in 25.0 mL of H2O at 25C has a boiling point of 100.95C. What is the molar mass of the solute if it is a nonvolatile non electrolyte and the solution behaves ideally. (d of H2O at 25C=0.997g/mL)?

    asked by Tori
  6. Chemistry

    A 200. gram sample of a salt solution contains 0.050 grams of NaCl. What is he concentration of the solution in parts per million? a)50. ppm b)250. ppm c)2.5 * 10^-4 ppm d)5.0 * 10^4 ppm

    asked by Tamara
  7. Physics 2

    The drawing shows four insulated wires overlapping one another, forming a square with 0.050-m sides. All four wires are much longer than the sides of the square. The net magnetic field at the center of the square is 91.5 µT. Calculate the current I.

    asked by Anne
  8. consumer math

    Jim opened an account with $400. The account pays three percent quarterly. How much is in the account at the end of two years? Round to the nearest dollar. (Points : 1) 5. Use this table to answer questions 5 through 8. Principal Rate Compounded Time Final

    asked by tina
  9. physics

    A golf ball is struck with a five iron on level ground. It lands 92.7 m away 4.40 s later. What was (a) the direction and (b) the magnitude of the initial velocity?

    asked by jessica
  10. electrostatic physics

    2. At the point of fission, a nucleus of 235U that has 92 protons is divided into two smaller spheres, each of which has 46 protons and a radius of 5.9 × 10^-15 m. What is the magnitude of the repulsive force pushing these two spheres apart? The value of

    asked by jc
  11. calculus

    2. Let f(x) = ksin(kx), where k is a positive constant. Find the area of the region bounded by one arch of the graph of f and the x-axis

    asked by Yoona
  12. MATH

    Find the length of segment RS if S between R and T, the length of RS is 1/3 the length of segment RT, RS=3x-3 and ST=2x+6.

    asked by Debbie
  13. Math

    A school is fencing in a rectangular area for a playground. It plans to enclose the playground using fencing on three sides (One length is a wall) The school has budgeted enough money for 75 ft of fencing material and would like to make a playground with

    asked by Jane
  14. Physics

    Jane and John, with masses of 50 kg and 60 kg, respectively, stand on a frictionless surfact 10 m apart. John pulls on a rope that connects him to Jane, giving Jane an acceleration of 0.92 m/s^2 toward him. (a) What is John's acceleration? (b) If the

    asked by Katelyn
  15. electrostatic physics

    Two charged particles of equal magnitude (+Q and +Q) are fixed at opposite corners of a square that lies in a plane (see figure below). A test charge −q is placed at a third corner. If F is the magnitude of the force on the test charge due to only one

    asked by jc
  16. chemistry

    calculate the freezing point of a .05500 m aqueous solution of NaNO3

    asked by Cece
  17. ap history

    was the new Deal essentially a consevative attempt to save American capitalism from collapse, a radical change in traditional American antigovernment beliefs, or a modrate liberal response to a unique crisis? i tried reading but kind of confuse but im

    asked by heather
  18. MATH

    find y if s is the midpoint of segment RT, T is midpoint of segment RU, RS = 6x+5, ST=8x-1, and TU=11y+13.

    asked by Debbie
  19. math

    If a tree is 10 feet tall after two years and 25 feet tall after 5 years, find the rate of change of growth of the tree if y is the height in feet and x is the number of years. Be sure to give correct units.

    asked by Don
  20. Chemistry!

    Consider the equilibrium system: N204 (g) = 2 NO2 (g) for which the Kp = 0.1134 at 25 C and deltaH rx is 58.03 kJ/mol. Assume that 1 mole of N2O4 and 2 moles of NO2 are introduced into a 5 L contains. What will be the equilibrium value of [N204]? Options

    asked by Vee
  21. college physics

    A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to twice her weight as she goes through the dip. If r = 19.0 m, how fast is

    asked by Anonymous
  22. Chemistry Help Please :)

    I'm stuck on how to do these 4 problems concerning Chemical Equilibriums. When varsol and iodine/pottasium iodide solutions are mixed, the two phases form.. phase A (top) would be pink and phase B (bottom) would be brown. What are the colours in each

    asked by Alexis
  23. chemistry

    Assume the density of aqueous HCl is the same as water (1.0 g/mL) and use the densities of ethanol (0.789 g/mL) and water as well as the actual amount of recrystallization solvent used to calculate the mass of recrystallization solvent.

    asked by Mike
  24. physics

    e4) a rope applies a horizontal force of 190 N to pull a crate a distance of 2 m across the floor. A frictional force of 50N opposes this motion a) what is the work done by the force applied by the rope? b)what is the work done by the frictional force?

    asked by Anonymous
  25. linear algebra

    Find x such that the matrix is equal to its own inverse. 3,x -2,-3

    asked by mando
  26. chemistry

    if not all the magnesium reacts, will the reported magnesium to oxigen ratio be too high or too low?

    asked by bailey
  27. Physics

    A turntable of radius 2m rotates freely about a fixed vertical axis. A child 19 kg is standing on the turntable right at the outer edge and the system is initially rotating at an angular speed of 0.5 rev/s. The child then moves to position 1m from center

    asked by Brittany
  28. British Literature

    What figure of speech is used in this statement: "Good Mistress Accost, I desire better acquaintance."

    asked by valerie
  29. Physics

    A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.1 {\rm m/s}^2 for 20 {\rm s}. It then proceeds at constant speed for 1100 {\rm m} before slowing down at 2.2 {\rm m/s}^2 until it stops at the

    asked by Susan
  30. psychology

    Conditional positive regard can be damaging because _______________. Answer A. the negative responses of others can lower self-esteem B. there are limitations placed on the creative personality C. anxiety is produced by the discrepancy between real self

    asked by Anonymous
  31. sultan abubakar collage

    A industrial raw material has the following composition by mas: iron = 28.1%; chlorine =35.7%; water of crystallization = 36.2%. Calculate the formular for the material. [H= 1.00, O=16.0, Cl =35.5, Fe=56.0].

    asked by alameen
  32. calculus

    5. If f (x)=(2x+1)^4 then the 4th derivative of f(x)=0 at x = 0 is..

    asked by Yoona
  33. Math

    Hayley has 16 square boxes to make an array of rectangular shapes on a grid. Harry says if she uses 19 square boxes she will get more arrays. Do you aree or disagree with Harrys' claim? Explain your answer using prime and composite numbers. Use the

    asked by Parker
  34. healthcare fiancare

    HINT: 6% X $1,000,000 – {20% X ($1,000,000 – (6% X $1,000,000))} = 6% X $1,000,000 – {20% X ($1,000,000 - $60,000))}= 6% X $1,000,000 - {20% X $940,000}= 6% X $1,000,000 - $188,000 = $60,000 - $ 188,000= -$128,000 A) The interst due on a 10% loan of

    asked by patricia
  35. statistics

    Find the mean of the given probability distribution. The number of golf balls ordered by customers of a pro shop has the following probability distribution.

    asked by mary
  36. College Chemistry

    If the density of cylinder 1 is 3.55 , what is the density of cylinder 2? (The masses and volumes of two cylinders are measured. The mass of cylinder 1 is 1.35 times the mass of cylinder 2. The volume of cylinder 1 is 0.792 times the volume of cylinder 2.)

    asked by Alex
  37. SCIENCE

    LIST TWO ENVIRONMENTAL CONDITIONS THAT MIGHT LEAD TO THE DISAPPEARANCE OF MANATEES FROM FLORIDA'S RIVERS? PLEASE HELP.

    asked by KAYLA
  38. Advanced Maths (Vectors) AQA Level, please help?

    A boat which can travel at 5m/s in still water is crossing a river 200 m wide.the rate of the flow of the river is 2 m/s assumed uniform at every point in the river. Point A and B are directly opposite to each other across the river. a) If the boat leaves

    asked by jat
  39. electrostatic physics

    Four point charges are placed at the four corners of a square. Each side of the square has a length L. Find the magnitude of the electric force on q2 due to all three charges q1, q3 and q4 for L = 1 m and q = 1.55 C. Answer in units of N

    asked by jc
  40. physics

    a .20 kg ball on a string is whirled on vertical circle at constant speed. When the ball is at 3:00 position, tension is 16 N. a) is centripetal force acting on ball the same at each point on the circle? b) when the ball is at 3:00, what is proving the

    asked by Sejul
  41. Math

    it takes Lucy 7 minues to cut a 20 yard by 1-yard roll of fabric into 14 equal pieces. How many minutes would it ake her to cut the fabric into 25 equal pieces?

    asked by Denise
  42. Advanced Maths (Vectors) AQA Level, please help?

    An aircraft have a speed in still air of 400 km/h. A wind is blowing from the south at 80 km/h. The pilot wishes the aircraft to travel due east. Find the direction in which aircraft should be steered and the speed at which it will travel.

    asked by jat
  43. physics

    From what distance can these light bulbs be marginally resolved by a small telescope with a 6.0 cm-diameter objective lens? Assume that the lens is limited only by diffraction and wavelength = 600nm

    asked by ryan
  44. Physics4

    2. At the point of fission, a nucleus of 235U that has 92 protons is divided into two smaller spheres, each of which has 46 protons and a radius of 5.9 × 10^-15 m. What is the magnitude of the repulsive force pushing these two spheres apart? The value of

    asked by jc
  45. calculus

    The Revenue from the sale of x units of a product is represented by the following formula: R = 20(3x + 1)^-1 + 50x - 17 dollars. Find the Marginal Revenue when 20 units are sold?

    asked by Carol
  46. Physics

    A girl places a stick at an angle of 60.0° against a flat rock on a frozen pond. She pushes at an angle and moves the rock horizontally for 2.00 m across the pond at a velocity of 4.00 m/s and a power of 160.0 W. What force did she apply to the stick? How

    asked by Pat
  47. Physics II

    two perpendicular, long, straight wires, both of which lie in the plane of the paper. The current in each of the wires is I = 4.5 A. In the drawing dH = 0.13 m and dV = 0.48 m. Find the magnitudes of the net magnetic fields at points A and B. The drawing

    asked by Mareena
  48. Physics

    Give an example of a vertical motion with a positive velocity and a negative acceleration. b. Give an example of a vertical motion with a negative velocity and a negative acceleration.

    asked by Susan
  49. Chemistry

    1) Benzene freezes at 5.45 degrees celsius. The Kf for benzene is -5.07C/m. What would be the freezing point of a 0.210m solution of octane in benzene? I am not sure how to start this. I know the equation for freezing point is Kfp * m solute.

    asked by Hannah
  50. Physics2

    A particle of mass 47 g and charge 54 C is released from rest when it is 13 cm from a second particle of charge −15 C. Determine the magnitude of the initial acceleration of the 47 g particle. Answer in units of m/s2

    asked by jc
  51. physics

    If You did 150 joules of work lifting a 120 newton backpack.A) How high did you lift the backpack?B)how muck did the backpack weigh in pounds?

    asked by lion
  52. Geometry

    Harris is planting a rectangular garden with an area of 48 square feet . He is also putting a fence around his garden . How should hr arrange his garden so he can buy the least amount of fence?

    asked by Anonymous
  53. Math

    Nico is saving money for his college education. He invests some money at 5%, and $2300 less than that amount at 3%. The investments produced a total of $163 interest in one year. How much did he invest at each rate?

    asked by Sarah
  54. Chemistry 101

    A bag contains a mixture of copper and lead BBs. The average density of the BBs is 9.60g/cm cubed. What is the percent of copper and the percent of lead?

    asked by Haley
  55. SCIENCE

    Two 2.6 kg physical science textbooks on a bookshelf are spaced 0.22 m apart. What is the magnitude of the gravitational attraction between the books?

    asked by Anonymous
  56. Physics

    An image of the moon is focused onto a screen using a converging lens of focal length f= 35.3 cm. The diameter of the moon is 3.48×106 m, and its mean distance from the earth is 3.85×108 m. What is the diameter of the moon's image?

    asked by Help !
  57. physics

    11. You did 150. J of work lifting a 120.-N backpack. a. How high did you lift the backpack? b. How much did the backpack weigh in pounds? (Hint: There are 4.448 N in one pound.)

    asked by lion
  58. electrostatic physics

    A particle of mass 47 g and charge 54 C is released from rest when it is 13 cm from a second particle of charge −15 C. Determine the magnitude of the initial acceleration of the 47 g particle. Answer in units of m/s2

    asked by jc
  59. statistics

    Now, let’s look at a situation in which we compare three college math teachers to each other with respect to how interested they keep their students. The study was conducted among freshmen enrolled in an introductory course. The unit was quadratic

    asked by John
  60. Chem

    a solution containing 100g of unknown liquid and 900g water has a freezing point pf -3.33 C. given kf=1.86 degrees c for water, the moelcular weight of the unknown liquid is what?

    asked by Court
  61. Economics

    Please check my work! Thanks! 1. The employees of Abs “R” Us, which includes 12 fitness parlors in and around the metro area, feel they can improve the performance of the company. They decide to pool their resources to purchase the company. This would

    asked by Suli
  62. chemistry

    Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH

    asked by Laura
  63. artwork critique

    this be the last one Judgement : Do you like it, and is it successful? how well you think you have done with materials used? is it original, innovative, and daring? does the artwork make you think beyond the image? is the artwork successful? how? do you

    asked by Mohammad
  64. Chemistry

    How many grams of water are needed to dissolve 27.8g of NH4NO3 (80.0 g/mol) in order to prepare a 0.452 m (molal) solution? 27.8g / 80g/mol X 0.452 = 0.157 Is this correct?

    asked by Hannah
  65. chemisry

    A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent. 100 ml of a 0.1M solution of the above acid is titrated with 0.1 M

    asked by ashley
  66. physics

    under the influence of its drive force, snowmobile is moving at constant velocity along a horizontal patch of snow. When drive force is shut off, snowmobile coasts to a halt. a) During the coasting phase, what is the net external force acting on the

    asked by Sushmitha
  67. algebra

    the apothem of a regular polygon is the distance from the center of the polygon to a side. Explaiin how to derive a formula for the area of a regular polygon using the apothem.

    asked by lucy needs help now
  68. Chemistry

    Which of the following contributes to the bubbling from a cold can of soda when left standing at room temperature. Choose all that apply. 1) the initial rush of CO2 out of the can drags other CO2 molecules out of the solution. 2) the decrease in CO2

    asked by Hannah
  69. Phsyicssss PLease helppp ASAP

    A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the

    asked by Anonymous
  70. Physics1

    Four point charges are placed at the four corners of a square. Each side of the square has a length L. Find the magnitude of the electric force onq2 due to all three charges q1, q3 and q4 for L = 1 m and all q = 1.55 C. Answer in units of N

    asked by jc
  71. PHYSICS- Please Help :(

    A ball is thrown downwards at a velocity of 14m/s from a bridge. One second earlier a rock is dropped from the same bridge. a)When will the ball meet up with the rock. b)When will the ball meet up with the rock? c)What is the initial minimum speed by the

    asked by Coco
  72. Physics

    A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in

    asked by Anonymous
  73. Physics (PLEASE HELP)

    A generating station is producing 2.00 106 W of power that is to be sent to a small town located 7.0 km away. Each of the two wires that comprise the transmission line has a resistance per kilometer of length of 5.00 10-2 /km. (a) Find the power lost in

    asked by DCM
  74. percentage

    Karen took 1h 45m to drive from town a to town b.she took another 25m to drive town b to town c.after that,she drove back to town a.the journey from town a to town c and then back to town a took 3h 35m. find the percentage of the time she spent driving

    asked by Da S
  75. artwork critique

    Interpretatin: what does the artwork mean? what you trying to say? who artwork intended for? you trying to teach a lesson? does artwork speak to you? how? This artwork mean to search for yourself, how you really be. Artwork intended for all people in world

    asked by Mohammad
  76. Physics

    A 1.26 kg block is held against a spring of force constant 2.0 103 N/m, compressing it a distance of 0.18 m. How fast is the block moving after it is released and the spring pushes it away?

    asked by BV
  77. Chemistry

    If 38.33 mL of a standard 0.1667 M Ba(OH)2 solution is required to neutralize exactly 52 mL of H2SO4, what is the molarity of the acid solution?

    asked by Beatriz
  78. physics

    A car, mass - 1950 kg, accelerates at +2.33 m/s (squared). Find the magnitude of the normal force acting on the car. If later, when the car is cruising at 26.5 m/s, the driver applies a force of magnitude 10,000 N to stop the car. What is the distance it

    asked by jane
  79. Physics

    You push a box along the floor against a constant force of friction. When you push with a horizontal force of 78 N the acceleration of the box is 0.46 m/s2; when you increase the force to 86 N the acceleration is 0.76 m/s2. (a) Find the mass of the box.

    asked by Anna
  80. Physics

    A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in

    asked by Anonymous
  81. math

    How many different rectangular prisms can be made using 36 cubes if the height is 2 cubes?

    asked by Taylor
  82. Chemistry

    Calculate the moles of hexane required to form 150 g of carbon dioxide. Please show all working. Thank you.

    asked by Megan
  83. Chemistry

    How to calculate the molarity of phosphoric aci9d in a solution that is 84% by mass phosphoric acid and a density of 1.87 g/ml

    asked by Cee
  84. physics

    A car is traveling at a constant speed along road ABCDE. (Curve BC where Bis beginning of curve and C is the end of the curve is in the shape of a "backward C." C is then the beginning of another curve and D is the end of the same curve in the shape of a

    asked by Nabil
  85. Chemistry

    Which aqueous solution below is expected to have the lowest freezing point? Assume 100% dissociation for ionic species. 1)0.25m MgBr2 2)0.30m Na2SO4 3) 0.50m KCl 4) 1.0m sucrose 5) 0.40m Cr(NO3)3 I think that the answer is 0.30NaSO4 but I am not positive.

    asked by Hannah
  86. Physics

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous
  87. Physics

    A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in

    asked by Anonymous
  88. algebra

    Explain the words relation and function. Include in your explanation how the meanings of the two words differ. Give a real-world example of a relation that is not a function. Is it possible to give an example of a function that is not a relation? If so,

    asked by Lucy needs help now
  89. physics

    A tractor of mass 5000kg is used to tow a car of mass 2500kg.The tractor moved with a speed of 3meter per secound.Just before the towing rope cuts,calculate (a)the speed of the tractor immediately the rope cuts

    asked by Fatimah
  90. chemistry

    Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH

    asked by Laura
  91. chemistry

    Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH

    asked by Laura
  92. Math

    At a summer camp there are 60 girls and 30 boys. Twenty percent of girls and 40% of boys passed the swimming test. What percent of the campers passed. Please show working.

    asked by Devon
  93. MATH

    If 2 angles are adjacent, can it also be said they form a linear pair? Why?

    asked by James
  94. linear algebra

    Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0

    asked by mando
  95. CHEM

    Cl2 + SO2 + 2 H2O --> 2 Cl^1- + SO4^2- + 4 H^1+ 1) Which element is oxidized ? (simply write the element symbol; e.g. Fe, O) 2) How many electrons are lost by each atom ? (1, 2, 3) 3) Which element is reduced ? 4) How many electrons are gained by each atom

    asked by TARA
  96. physics

    An electron is a subatomic particle (m = 9.11 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.21 105 m/s to a final velocity of +2.29 106 m/s while traveling a distance of

    asked by Natasha
  97. Advanced Maths (Vectors) AQA Level

    Triangle ABC with D, E and F the midpoints of BC, AC, and AB. G is the midpoint of AD such that the ratio AG:GD =2:1, VECtors AB =p and BC =q Prove that B, G and E are collinear. prove the same results for point C, G and G

    asked by Jat
  98. statistics

    Five independent samples, each of size n, are to be drawn from a normal distribution where sigma is known. For each sample, the interval (y-bar - 0.96 * sigma/sqrt(n), y-bar + 1.06 *sigma/sqrt(n)) will be constructed. What is the probability that at least

    asked by Bill
  99. statistics

    . A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its

    asked by John
  100. Physics

    The wire in the drawing carries a current of 14 A. Suppose that a second long, straight wire is placed right next to this wire. The current in the second wire is 33 A. Use Ampere's law to find the magnitude of the magnetic field at a distance of r = 1.0 m

    asked by Mareena
  101. Chemistry

    How much carbon dioxide has to be bubbled into aqueous sodium hydroxide to obtain a solution containing 3.5 mol of sodium hydrogen carbonate?

    asked by Amanda
  102. math word problem

    lexi and maria had $250.oo altogether. After lexi spent 2/5 of her money and Maria spent $40.00 they had the same amount of money left.How much money did lexi have in the beginning?

    asked by joe
  103. Chemistry

    Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co-60? What is the activity of the sample in Bq?

    asked by Steven
  104. algebra

    Explain how you find ordered-pair solutions of the equation 3x - 5y =15, and then find two such solutions.

    asked by lucy needs help now
  105. Finance

    Item Total assets $10,000,000 Total equity (all common) 9,000,000 Total debt 1,000,000 Annual interest 100,000 Total sales $25,000,000 EBIT 6,250,000 Earnings available for common stockholders 3,690,000 I am trying to find the values for the: (1) Operating

    asked by Advice
  106. Finance

    Your firm is considering the following three alternative bank loans for $1,000,000: A) 10 percent loan paid at year end with no compensating balance. B) 9 % laon paid at year end with a 20% compesating balance. C)6% loan that is discounted with a 20%

    asked by patricia
  107. Chemistry

    If all ionic substances completely ionized, the aqueous solution with the lowest freezing point would be 1)0.25m NH4NO3 2)0.30m BaCl2 3) 0.35m LiBr 4) 0.50m Sucrose 5) 0.40m MgSO4 I know that i have to multiply m and i to find the largest delta T. I am

    asked by Hannah
  108. physics

    A uniform horizontal rod of mass 2.4 kg and length 0.86 m is free to pivot about one end as shown. The moment of inertia of the rod about an axis perpendicular to the rod and through the center of mass is given by I = (m*l^2)/12 If a 6.8 N force at an

    asked by Latane
  109. SCIENCE3

    Identify one external feature of the manatee that allows it to live in water. Please help me with this one too!?

    asked by KAYLA
  110. linear algebra

    Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0

    asked by mando
  111. linear algebra

    Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0

    asked by mando
  112. Physics

    A 343-kg boat is sailing 16.2° north of east at a speed of 1.98 m/s. Thirty seconds later, it is sailing 37.5° north of east at a speed of 3.76 m/s. During this time, three forces act on the boat: a 30.3-N force directed 16.2° north of east (due to an

    asked by Natasha
  113. Physicsss helppp pleaseee

    A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the

    asked by Anonymous
  114. Chemistry

    A solution was made by dissolving 62.07 grams of a compound in 500g of water. The compound was not ionic. The freezing point of the solution was measured and found to be -1.86 degrees celsius. Using the Kf value in your textbook, the molar mass of this

    asked by Hannah
  115. PHYSICSSS PLEASE HELP ANYONE

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous
  116. PHYSICS

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous
  117. Statistics

    On a chemistry exam, Student A scored a 81 and Student B scored a 70. The mean for the class was 75 and the standard deviation was 3.8. What percentage of students scored in somewhere in between Student A and Student B?

    asked by robyn
  118. English

    Thank you very much for encouraging me to go on with my work! Here are some more sentences I'd like you to check. Can I start my exercise with: Fill in the blanks with an appropriate preposition. Complete the sentences using an appropriate preposition. 1)

    asked by Henry2
  119. science

    identify onbe external feature of the manatee that allows it to live in water.

    asked by Matt
  120. physical

    Consider a pulse of laser light aimed at the moon that bounces back to earth. The distance between Earth and Moon is 3.8 x 10 (small eight above) m. Show that the round-trip time for the light is 2.5 s.

    asked by Julia
  121. algebra

    If you cut a piece of paper to form a triangle shape, and tear off the three corners of the triangle and then put the three corners together what will you see? Please describe. What mathematical truth does this activity illustrate?

    asked by Lucy needs help now
  122. Math 208

    The number of state federal inmates in millions during year x, where x is greater than or equal to 2002 can be approximated by the following formula N=0.04x-78.96 Determine the year in which there were 1.2 million inmates

    asked by Anonymous
  123. SCIENCE

    Determine the mass of a person on the moon whose mass on Earth is 70 kg Determine the weight of a person on the moon whose weight on Earth is 148 lbs. How is the mutual gravitational force affected by changing the separation distance between two 1.0 kg

    asked by Anonymous
  124. Satistics

    **I don't want the answer, I want to know how to set the problem up and the formula that I need to use. I am online with a tutor right now, and they can't help me. :-( The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in

    asked by Shannon
  125. physics

    A circuit consists of a 12.0 V battery connected to three resistors 44 ohms, 15 ohms and 120 ohms in series. A)Find the current that flows through the battery. B)Find the potential difference across the 44 Ohms resistor. C)Find the potential difference

    asked by jazz
  126. Advanced Maths (Vectors) AQA Level, please help?

    Two ships, A and B st out from port O simultaneously. A travels due north at 16 km/h, B due east at 13 km/h. The ships radio have a rang of 120. For how long would they remain in contact if B had travelled north-east

    asked by jat
  127. math

    My niece has asked me to help with a math project. Maybe I am putting too much into it but I do not understand it. Any help would be great. It is a "Tissue Box Project". Any ideas?

    asked by Buddy
  128. Physics

    A horizontal wire of length 0.48 m, carrying a current of 6.8 A, is placed in a uniform external magnetic field. When the wire is horizontal, it experiences no magnetic force. When the wire is tilted upward at an angle of 19° it experiences a magnetic

    asked by Anne
  129. chemistry

    In the reaction of N2 and H2 to produce NH3, how many moles of N2 will produce 25.9 moles NH3?

    asked by Anonymous
  130. science

    Compare optical telescopes and radio telescopes. What are the advantages of using a radio telescope over an optical one? All I can think of is, that radio telescopes can be used in any form of weather and optical telescopes can't. I'm not sure if that is

    asked by Bree
  131. FACS Project Help!

    I have this project for facs (family and comsumer science) and I really need help. UNIT: Personal Development Topic: The One & Only You! Lesson: The UNIQUE you! Review Question Due Date: 2/15/12 1. Identify - What are four (4) influences that give you a

    asked by Laruen
  132. chemistry

    A student is given 3 beakers: Beaker 1- 50.0 ml of a solution produced by dissolving 6.00 grams of a weak monoprotic acid ,HX, in enough water to produce 1 liter of solution. The empirical formula of HX is CH2O. The solution contains 3 drops of

    asked by ashley
  133. math

    mr spoke is a salesman at pop's cycle shop. each month he earns 800 plus 7% of his total monthly sales. how much did he earn last month if his sales totalled 9200

    asked by ashley
  134. PHYSICS CAN ANYONE HELPPPP PLEASE

    A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the rope?

    asked by Anonymous
  135. math

    Math question. Two part. A am rifle bullet accelerates from 0 to 1000 m/s ( about 2240 MPH) in 1/1000 second when fired. What is the avg acceleration of the bullet in m/s2? If this rate of acceleration could be somehow maintained, how long would it take

    asked by bubba
  136. 6th grade science

    why would a shredded carrot turn the softest when it is sitting on top of a table out in the open air compared to the carrot in water and the carrot in salty water?

    asked by kate
  137. POETRY

    Who is the intended audience for the poem Flesh and Spirit by Anne Bradstreet? I also need an example of contemporary relevance for the poem. Help please?

    asked by Paige
  138. Math

    A test has 125 items. Each correct answer earns 1point and 65% is a passing grade. If you get 42 answers wrong will you pass? Show working

    asked by Devon
  139. math

    A triangular pyramid has a triangle base of 24 cm, triangle height of 16 cm, and a pyramid height of 14 cm. what is the volume of triangular prism.

    asked by Hanna
  140. Physics

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous
  141. Physics

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous
  142. algebra

    The temperature F, in degrees Fahrenheit, that corresponds to a temperature C, in degrees Celsius, is given by the equation F = (9/5)C + 32. If you graph this equation for 0 < (the sign has a _ below it to mean or equal to) C < (the sign has a _ below it

    asked by Lucy needs help now
  143. PHYSICSSSSSS help please

    A train engine pulls out of a station along a straight horizontal track with five identical freight cars behind it, each of which weighs 88.0 kN. The train reaches a speed of 13.0 m/s within 6.50 min of starting out. Assuming the engine pulls with a

    asked by Anonymous
  144. economics

    For the total variable cost (TVC), draw a positive total fixed cost (TFC) and total cost (TC) curves. Then derive the associated marginal cost (MC), average total cost (ATC), average variable (AVC) and average fixed cost (AFC) curves. Be sure to capture

    asked by Daca
  145. Gov

    I'm still struggling with the following questions as I received help before: 1) Explain Obama's administrations stance on net neutrality.. from what I read I think he's for it 3) Why didn't the FCC's ruling cover wireless providers? can I have a specific

    asked by Blaze
  146. Math

    A bill for a meal is $10.38 including tax. Find the total cost if the customer leaves a 15% tip.

    asked by Devon
  147. SCIENCE2

    WHY IS THE MANATEE CLASSIFIED AS AN HERBIVORE? PLEASE HELP ME WITH THIS ONE TOO!

    asked by KAYLA
  148. Chemistry

    Determine the grams of hexane that will react exactly with 22 g of oxygen. Show all working please. Thank you.

    asked by Megan
  149. chemistry

    Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH

    asked by Laura
  150. Please Helppp Quickly PHYSICSSSS

    A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the rope?

    asked by Anonymous
  151. English

    When do you use the past participle: had had, had have, had has?

    asked by Anonymous
  152. math

    A girl cycles from her house to a friend’s house at 22 km/h and home again at 26 km/h. If the round trip takes 54 min, how far is it to her friend’s house? Round your answer to the nearest 0.1 km. [

    asked by Ben
  153. English

    What is a narrative essay? What else besides the recap of?

    asked by Josephina
  154. PHYSICSSSS

    A train engine pulls out of a station along a straight horizontal track with five identical freight cars behind it, each of which weighs 88.0 kN. The train reaches a speed of 13.0 m/s within 6.50 min of starting out. Assuming the engine pulls with a

    asked by Anonymous
  155. PHYSICSSS

    Two boxes with different masses M1 = 1.8 kg and M2 = 2.6 kg are tied together on a frictionless ramp surface which makes an angle θ = 21° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? N What is the

    asked by Anonymous
  156. Physicssss please help

    A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the

    asked by Anonymous
  157. Physics

    Car A passes a light post moving at 25m/s and continues at this speed. Two seconds later, another car passes the light post moving at 40m/s. Assuming no acceleration of either car. a)How much time will it take for the second car to catch up with the first

    asked by Coco
  158. Physics II

    A copper rod of length 0.83 m is lying on a frictionless table (see the drawing). Each end of the rod is attached to a fixed wire by an unstretched spring whose spring constant is k = 79 N/m. A magnetic field with a strength of 0.13 T is oriented

    asked by Mareena
  159. SS7R Question/Help! (plz read)

    The American Revolution From 1763 through 1776 the American colonies sprit of rebellion was escalating. After a long period of being ignored, England put harder rules over the colonist. Economic, political, and social factors made the colonist take steps

    asked by Laruen
  160. Physics

    A box is being with a velocity v by a force P (parallel to to v) along a level horizontal floor. the normal force is Fn, the kinetic frictional force if fk, and the weight of the box is mg. Decide which forces do positive, zero or negative work and why?

    asked by Nilan
  161. physics

    A satellite is in a circular earth orbit that has a radius of 6.63E+6 m. A model airplane is flying on a 16.4 m guideline in a horizontal circle. The guideline is nearly parallel to the ground. Find the speed of the plane such that the plane and the

    asked by Anonymous
  162. English

    Thank you very much. By the way, what do you think of our Comenius project? Do you think we did a good job? I still have a few setences on phrasal verbs I'd like you to check. (especially the reprhase of 1) 1) I can't understand the various meanings of

    asked by Henry2
  163. math

    Please show me how to set this up and how to solve: A ribbon with straight edges has an area of 24 inches squared. Its width is x and its length is 2x + 13. What is the width of the ribbon in inches?

    asked by Jane
  164. chemistry

    a. A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent. b. 100 ml of a 0.1M solution of the above acid is titrated with

    asked by billy
  165. physics

    For a spring block system M=2.72*10^5kg frequency 10.0 hertz and amlitude 20.0cm (a) What is E (b) What is the block speed at its passes the equlibrium point.

    asked by Ghazala shoaib
  166. Math

    How do I set this up and how do I solve: The sum of two numbers is 20 The difference between 3 times the larger number and twice the smaller number is 40. What is the larger number?

    asked by Jane
  167. geography

    1. Sofia is the capital of what European nation? Bulgaria 2. Find the Nile River in Africa. What two cities are located near its Delta? Cairo and Alexandria 3. What large island is found off the coast of southern Labrador? Newfoundland 4. What is the

    asked by Reed
  168. maths

    in figure m // n and angle l and 2 are in the ratio 3:2 determine all the angles from 1 to 8

    asked by mallavarapu
  169. math

    If a metal ball is thrown downward with an initial velocity of 22 feet per second (15mph)from a 100 foot water tower, it's height h in feet above the ground after t seconds is modeled by h(t)=-16t^2-22t+100 Determine when the height of the ball is 62 feet.

    asked by alex
  170. function with a radical expression

    f(x)=6 fx)=20+2x^2 all under a square root symbol 6=20+2(36) 6=the square root of 92 will someone help me

    asked by luckybee
  171. geometry

    area of a triangle is 50 centimeters and the base is 4 times the height what is the height?

    asked by karyssa
  172. Chemistry

    If very small concentrations of NaCl and AgNO3 are mixed, no precipitate forms. However, if large concentrations are mixed, a white precipitate forms. Can someone tell me a method for testing the hypothesis that "insoluble" salts would dissolve to some

    asked by Sarah
  173. math

    how long is the diagonal of a piece of paper that is 8.5 in by 11in

    asked by Anonymous
  174. chemistry/check please

    1) Oxygen and boron are in the same period . When they form a compound----- is written first.Phosphorus and arsenic are the same group. When they form a compound------is written first. A) oxygen/phosphorus B)oxygen/arsenic C)boron/phosphorus

    asked by nick
  175. chemistry/help

    1) Oxygen and boron are in the same period . When they form a compound----- is written first.Phosphorus and arsenic are the same group. When they form a compound------is written first. A) oxygen/phosphorus B)oxygen/arsenic C)boron/phosphorus

    asked by nick
  176. physics

    a force of 625 N is used to move an object with 1000N resistance up inclined plane of 2.0 m.What is the length of the inclined plane

    asked by Lee
  177. law

    can somebody who has done LLB advice me on studyn for da first year exam in may..i fear cz i was not really in touch n i doubt whethr i can score well for all 4 subjects(criminal/contract/constitution/english legal system) pls advice me how to pass all

    asked by ruwangi
  178. Math

    why might Pa^t and Pe^rt not produce the same answer? Thank You

    asked by WaShu
  179. English

    I urgently need you to check this sentence. Thank you. 1) In section F.4 concerning "integration into ongoing activity" our coordinating partner mistakenly wrote that our tenth classes instead of our eleventh classes, which correspond to the third classes

    asked by Henry2
  180. chemistry

    A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent.

    asked by ashley
  181. Math

    State the equation of the line passing through the points (7,-1) and (2,2) a) 5x+3y-16=0 b) -5x-3x-16=0 c) -3x - 5y - 16=0 d) 3x + 5y-16=0 ------------------------------------ Is letter D correct?

    asked by Jake
  182. electrostatic physics

    An uncharged molecule of DNA (deoxyribonucleic acid) is 2.15 m long. The ends of the molecule become singly ionized so that there is a charge of −1.6 × 10^−19C on one end and +1.6 × 10^−19C on the other. The helical molecule acts like a spring and

    asked by jc
  183. Math

    Let f(t) be an exponential function with f(0) = 11 and f(4) = 59. Use the form f(t) = Pa^t to find an equation for this exponential function? What is the Value of P and A? Thanks!

    asked by Andy
  184. Math 117

    Use rational exponent to write 4 cube root x multiply by 6 cube root 6x as a single radical expresion.

    asked by Joseph
  185. statistics

    A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its statistical

    asked by John
  186. Advanced Maths (Vectors) AQA Level

    Triangle ABC with D, E and F the midpoints of BC, AC, and AB. G is the midpoint of AD such that the ratio AG:GD =2:1, VECtors AB =p and BC =q Prove that B, G and E are collinear. prove the same results for point C, G and F

    asked by Jat
  187. statistics

    A professor teaches two different subjects (history and sociology) in an ethnically diverse college. She wants to know how much interest students have in prominent political figures. She reasons that knowing this will help her plan for future lectures. She

    asked by John
  188. math

    A car is traveling at 120 km/h. How far does it travel in 6 1/3 hours?

    asked by Tori
  189. science

    Given that Antarctica is roughly semicircular with a radius of 2000 km and has an average ice thickness of 3000 m. a) How many km3 of ice does Antarctica contain? b) Assuming all the ice melts, how much will this raise sea level (ignoring that the Earth

    asked by bibi meeble
  190. English

    I included an introduction to 18th-century novels (is it correct?) + the features of Defoe's novels. Thank you. 1) Structure of his novels His novels are fictional autobiographies always pretending to be true stories. 2) They are preceded by a preface by

    asked by Henry2
  191. math

    Q=3x^2+4y^2 if x+y=7 what is minimum value for Q. I have absolutely no idea how to solve this problem.

    asked by summer
  192. communication

    Can anyone explain to me what the meaning of "communication phenomenon" exactly is? Thankssss!

    asked by maria
  193. Biology

    How are soldier crabs useful to us and what things are humans doing to wipe them out?

    asked by Jason
  194. Chemistry

    Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co-60? What is the activity of the sample in Bq?

    asked by gary
  195. Chemistry

    Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co-60? What is the activity of the sample in Bq?

    asked by gary
  196. Chemistry

    You dissolve 5 g of calcium hydroxide in 2 liters of water. What is the molarity of the hydroxide ions in this solution? What is the molarity of the calcium ions in this solution?

    asked by Amanda
  197. English

    I need to write sentences using specific phrasal verbs. I need to knwo if they are possible and supply the equivalent in formal English. I havent' found the meaning of "let on to" Does it exist? Thank you 1) One boy had let off a firework in class. Many

    asked by Henry2
  198. physics

    Determine the force required through A for the system to remain in static equilibrium in the horizontal (not moving side to side). The forces at B and C are 40 N and 90 N, respectively

    asked by Anonymous
  199. Algebra

    Write an equation for the ellipse that satisfies the set of conditions. endpoint of major axis at ( 0, 10) and (0, -10) foci at (0, 8) and (0-8) Please help, I really don't understand how to do this

    asked by Beth
  200. PHYSICS IS THERE ANYONE WHO WUD HELP PLEASE

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

    asked by Anonymous
  201. is this correct?- math

    find the domain of the real valued function; f(x) = sqrt(5 - (sqrtx)) my solution: 5 - (sqrt x) >=0 -(sqrt x) >= -5 (sqrt x)

    asked by HARRY
  202. refining

    If I have a solution of gold chloride, is there a was I can grow metalic gold crystals to recover the gold instead of using sulfer dioxide to drop the gold as poeder?

    asked by art
  203. english

    i need to chose at least 8 songs and how they relate to romeo and juliet acts so i can make a soundtrack. thanks

    asked by sam
  204. Healthcare

    I have to do an assignment on Trends and Consumerism in Healthcare. What is a topic that I can do for this assignment? Please help I am Lost.

    asked by DonnaK
  205. Engineering

    The angular velocity of a rigid body rotating about an axis of rotation is w = 5^i + 2^j - 4^k rad. per. sec. Determine the linear velocity of point B on the body with a position vector r = 3^i - ^j + 3^k ft. directed from a point on the axis of rotation.

    asked by Aaron
  206. Calculus

    find the area under the curve y = x^2 + x from the origin to the line x = 3

    asked by hank
  207. math

    Solve by factoring: 12 w(squared) = 28w +5

    asked by Jane
  208. English

    Thank you very much. Here is the second list of verbs I'd like you to check.I'd also need to rephrase each sentence using a verb which is not phrasal. Can you please help me? 1) A long strike threatened to bring down the Government 2) I’m sure this

    asked by Henry2
  209. algebra

    -3 > x > 5 as the inequality that represents the real numbers less than -3 or greater than 5. Explain why this is incorrect.

    asked by lucy needs help now
  210. statistics

    Assume that the population of heights of female college students is approximately normally distributed with mean m of 66 inches and standard deviation s of 4.00 inches. Show all work. (A) Find the proportion of female college students whose height is

    asked by Tiffany
  211. Math

    A 3 digit code can be made using the numbers 6,7,8,9, or 0? If repetition is not allowed, how many different codes are possible?

    asked by Wendy
  212. Physics

    If a total mass of 11.1 kg falls 5.23 m and all of the mechanical energy is converted to internal energy, by how much will the internal energy of the water increase? The acceleration of gravity is 9.81 m/s 2 . Assume no energy is transferred as heat out of

    asked by Joe
  213. English

    I left out two sentences I need to write in an email. 1) I wrote to the two Irish school's principals you suggested (to me) but none of them replied to my email. 2) As I would really like to start a school exchange programme with an Irish school in your

    asked by Henry2
  214. phi 103

    All dogs hate cats. Sirius is a dog. So Sirius hates cats" is an example of a

    asked by Jason
  215. science

    1. If a baseball is thrown 30 m/s backwards from a truck moving forward 50 m/s, how fast will the ball strike the glove of a ground-based catcher?

    asked by Anonymous
  216. percentage

    Sharil is cycling from his house to Jeju Island,which are 15km apart.If Sharil has cycled a distance of 9.5km,what percentage of the total distance does he have left? pls round off ur answer to 1 decimal place

    asked by Da S
  217. physics

    differentiate between density,mass and volume. state a formula in terms of mass density and volume. using the formula calculate the volume of a 10kg block of ice

    asked by john
  218. chem

    what are three different situations in which the diffusion of gases is desired or not desired. what could you do to increase the rate of diffusion(for a desired gas) or slow the diffusion( for an undesired gas)?

    asked by skye
  219. percentage

    Amit bought a pair of pants for 45$.he had to pay 7% GST. a)how much GST did Amit pay? b)how much did Amit pay for the pair of pants?

    asked by Da S
  220. english

    i need to chose at least 8 songs and how they relate to romeo and juliet acts

    asked by john
  221. english

    i need to create a eight song soundtrack and how they relate to romeo and juliet play.

    asked by john
  222. artwork meaning

    i make shattered image in art, but what shattered image mean? does it have meaning? i thought maybe it mean search for yourself.

    asked by Mohammad
  223. PHYSICSSS please helppp ASAP

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. (a) Find the accelerations of the pumpkin and the watermelon. Specify magnitude and

    asked by Anonymous
  224. PHYSICSSSSS helpppp please

    Two boxes with different masses M1 = 1.8 kg and M2 = 2.6 kg are tied together on a frictionless ramp surface which makes an angle θ = 21° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? N What is the

    asked by Anonymous
  225. algebra

    please check and correct if needed. thanks problem: you have coupon of $50 off your telephone purchase of $100 or more at bell store. a. write a function relating phone purchase price after coupon, y, to the retail price, x . give the domain of this

    asked by ann
  226. math

    how long is the diagonal of a piece of paper that is 8.5 in by 11in

    asked by Anonymous
  227. math

    how long is the diagonal of a piece of paper that is 8.5 in by 11in

    asked by Anonymous
  228. ms. sue

    ms. sue i write question in other post.

    asked by Mohammad
  229. Logics

    Logicians regard the following as the meaning of the word "argument." (Points : 1) a. A hostile and emotional dispute b. A poetic tribute to Spring c. A set of reasons put forth to support a claim d. The kind of thing one has with a spouse

    asked by Mary
  230. algebra

    make five sets of balanced equations for the number 20:

    asked by Adnan
  231. science

    A force of 2000N is used to push a box up an inclined plane that is 5m long. If the 100 kg box is raised to a height of 8m, how much work is done against friction? Let g equal 10 m/s2; I need to know how to set the problem up

    asked by Lee
  232. Calculus

    Could someone help me with this question. Determine what limit would be represented by the following graph. imgur dot com/bceWN I am not sure if it has open dot or closed but what would the equation be for open and closed dot?

    asked by Matthew
  233. Social Studies 7R - DBQ Essay

    I have this assignment for my social studies class. We have to write a DBQ essay on the American Revolution. We had done the documents for homework and go over it as a class. Here are the tasks below: 1. Identify and discuss two causes of the American

    asked by Laruen
  234. ece

    words are: A)convenient communication shortcuts B)not arbitrary symbols C)unique to each individual in english D)thoughts written down I chose b is this correct

    asked by Deb
  235. Engineering

    A force of 26 lb. acts through a point (4; 5; -7) ft. and is equally inclined to the positive ends of the orthogonal axes. What is the moment of this force about the origin So i'm assuming vector r is 4i+5j-7k? And using the fact that cos^2α + cos^2β +

    asked by Aaron
  236. math

    divide 1 yd 4 in. by 5

    asked by kayla
  237. Statistics

    A manufacturer of a low-tar cigarette claims that their cigarettes contain an average of 16.3 mg of tar with a standard deviation of 3.1 mg per cigarette. How many sample cigarettes must the manufacturer observe to be 99% confident that the width of the

    asked by Angel
  238. Phsyicsssss helppp

    A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. (a) Find the accelerations of the pumpkin and the watermelon. Specify magnitude and

    asked by Anonymous
  239. Science

    Can anyone please suggest a food chain which includes a soldier crab starting from the sun (in a marine environment)?

    asked by Mae
  240. Science

    what are contrasts between a marine and estuarine environment?

    asked by Maica
  241. follow up from before

    Is there some reason as to why nobody has addressed my financial accounting post from Saturday, February 11, 2012 at 5:45pm?

    asked by Pumpernickel
  242. Chemistry

    Is there any way to increase the ionic strength of a solution without increasing the pH?

    asked by Jenny
  243. ece

    It is likely that a preschooler who learns to read early: A) will watch a lot of tv B) will enjoy playing outdoors as do other children C) will watch less tv than other children D)will enjoy playing outdoors as do other children and will watch less tv than

    asked by Deb
  244. Languages

    How do you say the word "love" and "kind" is many languages. (the language doesnt matter, a list would be great)

    asked by martha
  245. my quetion earlier was NOT answered

    I'm still struggling with the following questions as I received help before: 1) Explain Obama's administrations stance on net neutrality.. from what I read I think he's for it 3) Why didn't the FCC's ruling cover wireless providers? can I have a specific

    asked by Blaze
  246. Calculus

    Find the derivative y = 3x+2/x+1

    asked by Taylor
  247. Calculus

    I think I wrote it wrong earlier it should be Find the derivative y = (3x+2)/(x+1)

    asked by Taylor
  248. Math

    What is the perimeter of a triangle 46m 36m and 9.5

    asked by Landon
  249. maths

    12a2+8a-15

    asked by Anonymous
  250. physics

    If a particle were to move from position A to position b in 0.5s, what would be its rotational (angular) velocity? If the motion is uniform (constant speed), what would be its magnitude of the acceleration?

    asked by Anonymous
  251. algebra

    A certain toilet tank can be emptied in 6 sec through its drain when it is flushed. This happens at the same time that the water is flowing in through the inlet pipe. Withthe drain closed, the inlet pipe canfill the tank in 30 sec. How long would it take

    asked by carolyn
  252. English

    Here are the other phrasal verbs I need you to check (tell me of they are possible or of other are more often used) and which I also have to rephrase. Thank you very much! 1) Get your clothes off: they are all wet. 2) Get all that mess off your desk. I

    asked by Henry2
  253. math

    What conjectures/predictions can you make about polynomial functions whose highest exponent is 6, or 7?

    asked by bella
  254. Calculus

    On what interval is the function f(x)=x^2-6x+8 is increasing?

    asked by JM
  255. chemistry

    Given density of Mercury, 200.59....how do I calculate for the mass of 33.5mL

    asked by jamie
  256. amer lit

    how does the song dirty little secrets by the all american rejects apply to the scarlet letter

    asked by mary
  257. geometry

    The lengths of three sides of a triangle are given. Describe each triangle as acute. right. or obtuse. square root 5, 3, square root 14.

    asked by Rachel
  258. Geometry

    The lengths of three sides of a triangle are given. Describe each triangle as acute. right. or obtuse. 5, 6,10.

    asked by Rachel
  259. algebra

    x^-7x-8

    asked by Anonymous
  260. algebra

    x^-7x-8

    asked by Anonymous
  261. 4th grade math

    How could you find the measurements of the garden with a perimeter of 60 feet and the greatest possible area?

    asked by Paul
  262. english

    how do i create a eight song soundtrack

    asked by sam
  263. calc helppppp

    use limits to find and verify all asymptotes in the graph y= sqr root (5+x^2)/(3-x)

    asked by adrina
  264. Maths

    In a triangle ABC, AD is the altitude and AD = 10 cm and CD = 10 sqrt 3 cm, determine angle A ?

    asked by Hreem
  265. science4

    Last one i swear.... If the manatees were able to make 3 adaptions to their body or way of life for their survival, what would they be?

    asked by KAYLA
  266. math-measurement

    Subtract 1 foot 7 inch from 2 feet 2 inches

    asked by kayla
  267. math

    Subtract 1 ft 7 in. from 2ft. 2in.

    asked by kayla
  268. Spanish

    Answer in complete sentences. Te gusta más comer el desayuno o el almuerzo? ¿Por qué? My answer: Me gusta más comer el desayuno porque es nutritivo y bueno.

    asked by Anonymous
  269. English

    What are some culture collisions in the play othello by shakespere? i got one: color but i am stuck thank you

    asked by FEA
  270. math-measurement

    Multiply 2 yards 1 foot by 8

    asked by kayla
  271. geometry

    I need help to graph the circle 4x^2+4y^2+16x-32y+71=0 Graph the circle

    asked by steven
  272. math

    convert units in the customery units of measure 5yd 2ft = ? yd i got 5.67 yard

    asked by marko
  273. ece

    preschoolers use private speech: a)to influence others b)to keep some of their ideas a secret c)because it is more efficient d) because it enables them to communicate new ideas

    asked by Deb
  274. math

    5 inches by 7 inches, and the box must be at least 4 inches tall. What is the least possible volume of a box, in cubic inches, that meets these requirements?

    asked by haley
  275. ELA

    We have to do something about dogs Name brands of dog foods

    asked by Hayden
  276. math please help

    determine the domain of the real valued function f(x) = sqrt(5 - (sqrtx))

    asked by mary
  277. math-measurement

    How do i multiply 2 yards 1 foot by 8

    asked by kayla
  278. Pre-Calc

    Write a Sinusoidal function for the following. A ferris wheel is 100 feet in diameter and makes one revolution in 45 seconds. If the rider needs to walk up a ramp to get to their seat that is 5 feet above the ground, write the model for the rider.

    asked by Marisa
  279. grammar

    Is audience a pronoun, or just a noun? Can "yourself" be a demonstrative or Indefinite pronoun?

    asked by Kendon
  280. Math

    Let N(t) be the number of bacteria after t days. Then N(t) = Pa^t for some constants P and a. Measurements indicate that N(4) = 5600 and N(8) = 362, 000. a. Before working the problem, estimate the value of N(7), the number of bacteria at noon on the

    asked by Jean
  281. Chemistry

    What is the mass of a solution that has a volume of 0.100L and a density of 1.07g/ml. Find in grams and In kilograms.

    asked by Deb
  282. Biology

    In ion exchange chromatography, why do you have to be careful not to disturb the resin bed or let air enter the resin bed? I get that it disturbs resolution.. but I'm not sure exactly what to say.

    asked by Elle
  283. statistics

    An art professor was interested in seeing what size group is best to prime the pump so to speak to encourage strangers to gather together in front of various exhibits at her art show, so she set up an experiment. In a municipal building off campus, she

    asked by John
  284. Math 117

    Use rational exponent to write 4 cube root x multiply by 6 cube root 6x as a single radical expresion.

    asked by Joseph
  285. ELA

    Names of dog foods with artificial flavors

    asked by Hayden
  286. Electrical and electronic

    What is a system characteristic and how does it relate to the compensation ?

    asked by Contraler
  287. math-measurement

    divide 3 gallons by 4

    asked by kayla
  288. Math 117

    The formular r= 2 cube root5L can beusedto approximate the speed r,in mile per hour,of a car that has skid marks of lenght L,in feet. How far will a car skid at 60 mph.

    asked by Joseph
  289. Math

    The sum of the digits of a two-digit number is 12, and the units digit is twice the tens digit. Find the number.

    asked by Carp
  290. Engineering/Physics

    A force F = 7^i + 6^j - 5^k lb. acts at the origin. Find the magnitude and direction cosines of the moment of this force about point A (-4; 5; 6) ft So in this case wouldn't vector r= -4i +5j +6k and vector F = 7i + 6j - 5k lb? and r X F = -61i +22j -59k =

    asked by Aaron