1. Physics

    A variable-length air column is placed just below a vibrating wire that is fixed at the both ends. The length of air column open at one end is gradually increased from zero until the first position of resonance is observed at 20 cm. The wire is 115.4 cm

    asked by AJ on October 5, 2012
  2. math

    If everyone had the same body proportions, your weight in pounds would vary directly with the cube of your height in feet. Assume the average height and weight of a female in your math class is 5'5" and 150 pounds. Use this information to write a variation

    asked by montrey sanon on January 25, 2012
  3. physics

    A uniform horizontal beam 5.00 m long and weighting 2.88 102 N is attached to a wall by a pin connection that allows the beam to rotate. Its far end is supported by a cable that makes an angle of 53.0° with the horizontal (Figure (a)). If a person

    asked by Johnny on November 28, 2015
  4. Math! plz help!

    When Cody's son was born, he put $4,500 in an investment that earns 7% compounded semi-annually. This investment will mature when his son turns 18 and will go straight into an annuity at 4.75% compounded and paying out quarterly at the end of the period.

    asked by Thara! on April 10, 2010
  5. Physics

    A variable-length air column is placed just below a vibrating wire that is fixed at the both ends. The length of air column open at one end is gradually increased from zero until the first position of resonance is observed at 20 cm. The wire is 115.4 cm

    asked by AJ on October 1, 2012
  6. physics help

    A sphere of unknown mass with a net charge, Q is released from rest in a uniform electric field, E. After it travels a distance,d , it acquires a kinetic energy, K . Find the magnitude of the electric field in terms of K,Q , and .d [Hint: remember the

    asked by anonymous on January 29, 2018
  7. physics

    An egg rolls off a kitchen counter and breaks as it hits the floor. The counter is 1.0 m high, the mass of the egg is about 50 g, and the time interval during the collision is about 0.010 s. How large is the impulse that the floor exerts on the egg? use

    asked by May on December 7, 2014
  8. chemistry

    1. The mass spectrum can be observed for all forms: pos. ion, neg.ion, molecules, and atoms, can't it? 2. Is there a formular to calculate how many spectrum of the substances we need to observe? Please give me some examples, and calculation. 3. I knew the

    asked by Bun on December 29, 2009
  9. Physics

    The tallest volcano in the solar system is the 29 km tall Martian volcano, Olympus Mons. An astronaut drops a ball off the rim of the crater and that the free fall acceleration of the ball remains constant throughout the ball’s 29 km fall at a value of

    asked by Whitney on October 13, 2011
  10. Physics

    Just as no mechanical device can be 100% efficient, no heat engine can transfer 100% of its heat to a single object. Some of the heat energy must be wasted (released into the environment). We have a heat engine that produces 150 J of heat, does 40 J of

    asked by Jessica on December 7, 2016
  11. physics

    From the top of a tall building, a gun is fired. The bullet leaves the gun at a speed of 340 m/s, parallel to the ground. As the drawing shows, the bullet puts a hole in a window of another building and hits the wall that faces the window. h is 0.54 m and

    asked by Gabbi on October 24, 2010
  12. Finite Math

    If everyone had the same body proportions, your weight in pounds would vary directly with the cube of your height in feet. Assume the average height and weight of a female in your math class is 5'5" and 135 pounds. Use this information to write a variation

    asked by MacKayla on February 5, 2019
  13. physics

    A 160g stone, tied to a thread, swings in a horizontal circle with a 100 cm diameter. If the maximum tension the thread can withstand before snapping is 28n, find the A) Maximum speed of the stone. B) Acceleration of the stone at this speed. For A I used

    asked by mack on November 22, 2011
  14. Physics

    A 20.0 kg cart is moving with a velocity of 7.30 m/s down a level hallway. A constant force of -11.0 N acts on the cart and its velocity becomes 3.50 m/s. a) What is the change in kinetic energy of the cart? b) How much work was done on the cart? c) How

    asked by Einstein on November 16, 2007
  15. Prealgebra/probability

    A coin is tossed three times. Use a tree diagram to find the number of possible outcomes that could produce exactly two heads. I don't know how to write out a tree diagram on here, but I think this one is heads -> heads, tails -> heads, heads -> tails? A

    asked by Fawn on July 3, 2016
  16. Algebra

    For their homecoming parade the students of U-Math have created a colorful banner, 53 meters in length, that is made of two pieces of parachute material. The short piece is 19 meters shorter then the long piece. Find the Length of each piece. Length of the

    asked by Christopher on May 7, 2014
  17. consumer math

    One week Roger earned $425.50 regular pay and $60.50 overtime pay. His net pay for the week was $275.30. How much did he have withheld for deductions? i don't know how to find the deduction so far don't now if right i add regulare pay=

    asked by gabe on January 4, 2010
  18. L.A 8TH

    For each pair of shapes, decide whether they are congruent, similar, or neither. Choose the best answer. Congruent Similar Neither Two side-side-side triangles are shown. Each side of one triangle is equivalent to the corresponding side of the other

    asked by BruteForce on January 17, 2018
  19. Math

    The density of water at 21 degrees C is 0.997992 g/mL. The density of water at 22 degrees C is 0.997770 g/mL. What is the density of water if the room temperature is 21.3 degrees C?? So I would just multiply 30 percent of the density at 21 degrees C but

    asked by Ray on October 18, 2016
  20. Chemistry-Paramagnetic or Diamagnetic

    I did a lab where I was supposed to make "estimates" on transition compounds based on their electron configuration of how the compounds will react positively or negatively and then to experiment the compounds in conjunction with the strong magnets to

    asked by Jessie on January 10, 2015
  21. business

    You recently observed a meeting between Ron, (a production manager at your company) and a sales representative from “Big Machines Inc”. Big Machines Inc last year sold your company a major piece of production equipment. They are now trying to sell your

    asked by Anonymous on November 15, 2008
  22. math

    you got 8 hours of sleep on monday night and 7 hours of sleep on tuesday night on wednesday you only got 4 hours of sleep because you were up late working on an english paper on thursday and friday you got 9 hours of sleep each night to make up for

    asked by Cheyenne on August 29, 2007
  23. Physics

    Suppose that a comet that was seen in 545 A.D. by Chinese astronomers was spotted again in year 1937. Assume the time between observations is the period of the comet and take its eccentricity as 0.11. What are (a) the semimajor axis of the comet's orbit

    asked by Austin on November 12, 2017
  24. physics

    A scuba diver must decompress after a deep dive to allow excess nitrogen to exit safely from his bloodstream. The length of time required for decompression depends on the total change in pressure that the diver experienced. Find this total change in

    asked by phillip on November 27, 2012
  25. Physics

    TORQUE, ROTATION AND TRANSLATION A Yo-Yo of mass m has an axle of radius b and a spool of radius R . Its moment of inertia about the center can be taken to be I=(1/2)mR2 and the thickness of the string can be neglected. The Yo-Yo is released from rest. You

    asked by Anon on November 24, 2013
  26. Chemistry

    A student obtained a clean, dry glass- stoppered flask. She weighed the flask and stopper on an analytical balance and found the total mass to be 33.695 g. She then filled the flask with water and obtained a mass for the full stoppered flask of 64.356 g.

    asked by Alan Anderson on January 24, 2014
  27. physics

    a fisherman noticed that his boat was lifted by the wter waves about once evry two seconds. He looked at the waves wnd estimated the length of a wave to be a 6cm. He also estimated the vertical distance between the highest point snd the lowest point of the

    asked by patris on December 9, 2014
  28. Physics

    A comet with a mass of 7.95 1011 kg strikes Earth at a speed of 22 km/s. (a) Find the kinetic energy of the comet in joules. ____ J (b) Compare the work that is done by Earth in stopping the comet to the 4.2 1015 J of energy that was released by the

    asked by Dar on February 18, 2010
  29. stats

    Consider an infinite population with 25% of the elements having the value 1, 25% the value 2, 25% the value 3, and 25% the value 4. If X is the value of a randomly selected item, then X is a discrete random variable whose possible values are 1, 2, 3, and

    asked by Mischa on November 5, 2008
  30. Chemistry

    HELP!! I'm doing an experiment to do with phosphorus and plant food and MgNH4P04 6H20 my air dry weight of MgNH4P04 6H20 was 1.31 g grams of P in plant food was .165 g % P in plant food is 13.87% % P205 equivalent to % P above is 63.02% % P 205 in 10-52-10

    asked by Alyssa on April 25, 2014
  31. Chemistry 1046

    A metal, M, of atomic mass 91 amu reacts with fluorine to form a salt that can be represented as MFx. In order to determine x and therefore the formula of the salt, a boiling point elevation experiment is performed. A 9.05-g sample of the salt is dissolved

    asked by Anonymous on July 3, 2012
  32. Health Information Technology

    I need sample copies of the following - Face Sheet; Registration Form; Doctors Order Form w/orders to include admission, treatment plan, medications; nurses note section; laboratory section; radiology section; doctors progress note section; history &

    asked by Gabby on March 12, 2015
  33. physics

    A rocket, initially at rest on the ground, accelerates straight upward with a constant acceleration of 34.3 . The rocket accelerates for a period of 8.00 before exhausting its fuel. The rocket continues its ascent until its motion is halted by gravity. The

    asked by Karina on September 19, 2011
  34. Math

    A trough is 8 meters long, 3 meters wide, and 5 meters deep. The vertical cross-section of the trough parallel to an end is shaped like an isoceles triangle (with height 5 meters, and base, on top, of length 3 meters). The trough is full of water (density

    asked by Hao on March 18, 2014
  35. Into to Communication

    I am having some trouble with my assignment. My assignment was to watch the movie Gangs of New York, and find 5 different cultures that faced discrimination within in the movie and use specific examples. So far I have the Irish-because they runied New York

    asked by Soly on January 6, 2007
  36. I NEED HELP PLEASE

    A trough is 8 meters long, 3 meters wide, and 5 meters deep. The vertical cross-section of the trough parallel to an end is shaped like an isoceles triangle (with height 5 meters, and base, on top, of length 3 meters). The trough is full of water (density

    asked by Hao on March 19, 2014
  37. physics

    Find the minimum diameter of a 51.5-m-long nylon string that will stretch no more than 1.01 cm when a load of 68.9 kg is suspended from its lower end. Assume that Ynylon = 3.51·10^8 N/m2 physics - bobpursley, Saturday, October 29, 2011 at 10:32am Hookes

    asked by maria on October 30, 2011
  38. english vocab

    ok i have been working on my english homework for some time now. i was assigned a 400 question vocabulary packet. here are just 15 questions i coudnt find out while doing the entire packet. I couldn't even find any answers using the dictionary website.

    asked by tamy on November 23, 2007
  39. French

    I have this chart thing made for french with all the months, and I basically have to list down holidays and stuff which occur in those months and that too in French. So this is what I have so far, and please add anything that I don't have. Thanks *I also

    asked by Ayu on February 23, 2011
  40. math 117 algebra

    The cost i dollarsof manufacturing w wing nuts is given by the expression 0.07w + 13.3. Find the cost when 375 wing nuts are made. What is the average cost to manufacture one wing nut? Put in 375 for w, and compute the cost. Average cost= costabove/w I'm

    asked by Diana on June 22, 2007
  41. ECON

    Suppose Fred has a utility function of the form U = X ½ Y ½ . Fred has an income of $100, good X costs $1.00, and good Y costs $2.00. How much of good X and how much or good Y will Fred buy? Be sure to show all your work. Ive aready drawn my graph and i

    asked by Brett on January 22, 2009
  42. Physics

    A person takes in a breath of 13*C of air and holds it until it warms to 36.5*C. The air has an initial volume of 0.24 L and a mass of 0.00077kg. a. Determine the work done by the air on the lungs if the pressure remains constant at 1 atm. Answer in units

    asked by Laura on January 2, 2011
  43. maximum and minimum problems when function unknown

    Hi, can anyone please help me with this problem, i have no idea what to do! The question is: a window frame is in the shape of a semicircle joined to a rectangle. Find the macimum area of a window using 300 cm of framework. i can usually solve these sorts

    asked by elle on May 21, 2007
  44. Chemistry

    A saturated solution of MgF2 at 23 degrees C was prepared by dissolving solid MgF2 in 1 L water. The Ksp of MgF2 is 1.5e-5. a.)Calculate the mass of MgF2 dissolved. b.) When .1 mols of solid KF was dissolved in the MgF2 solution, precipitation was

    asked by Anonymous on March 19, 2014
  45. college physics

    Two forces, of magnitudes F_1 = 80.0 N and F_2 = 25.0 N, act in opposite directions on a block, which sits atop a frictionless surface. Initially, the center of the block is at position x_i = -4.00 cm. At some later time, the block has moved to the right,

    asked by coco on February 25, 2010
  46. Precalculus

    The figure shows a 10 x 10 square centered at the origin. The darker shaded square is the image of this square, dilated by a factor of 0.8 and rotated about the origin by exactly the number of degrees, theta, so that its corners touch the sides of the

    asked by Sam on March 16, 2011
  47. Stats

    In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that: (A) exactly two will have this mild side effect (B) at least

    asked by Jennifer on October 24, 2011
  48. math

    in circle p below the lengths of the parallel chords are 20,16, and 12. Find measure of arc AB..... the chord with a length of 20 is the diameter. the chords with lengths 16 and 12 are below the diameter torwards the bottom of the circle. arc AB is the arc

    asked by Bo on May 25, 2012
  49. Physics

    A ball is thrown upwards at 15m/s from a window 20 metres above the ground. Find: a)How long the ball the takes to reach the level of the window b)How much longer it takes to reach the ground? c)What speed it takes to reach the ground?

    asked by Aquile on February 13, 2013
  50. statistics

    according to data from the american medical association, 10% of us are left handed. If three people, are randomly selected find the probability that they are all left handed. If groups of 50 people are randomly selected, what is the mean and stadard

    asked by cm on May 7, 2012
  51. PHYSICS

    a. A 25 nC particle and a – 7 nC particle is interacting with each other at a certain distance. Find the force between the two charges @ 3.0 cm and 1.0 cm Calculate and draw each of the particle’s electric fields. Calculate the electric potential

    asked by KAIT on August 18, 2011
  52. Geometry

    in circle p below the lengths of the parallel chords are 20,16, and 12. Find measure of arc AB..... the chord with a length of 20 is the diameter. the chords with lengths 16 and 12 are below the diameter torwards the bottom of the circle. arc AB is the arc

    asked by John on May 25, 2012
  53. Can u plz help me PsyDag?? Stats

    In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that: (A) exactly two will have this mild side effect (B) at least

    asked by Jennifer on October 25, 2011
  54. Math

    A map's shows that every 5 inches on the map represents 200 miles of actual distance. Suppose the binstance between two cities on the map is 7 inches. What is the actual distance between the two cities? Write the rule you used to find the actual distance

    asked by Hassanatu on March 10, 2016
  55. Can u help me Ms. Sue...Stats

    In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that: (A) exactly two will have this mild side effect (B) at least

    asked by Jennifer on October 25, 2011
  56. Physics

    An electric dipole (any pair of oppositely charge point particles) lies on the x-axis, consisting of a - 2.5nC charge at x = -10 cm, and a +2.5nC charge at x=10cm. Find the electric field (a) on the x-axis, at the point (20,0) and (b) on the y-axis, at

    asked by Jayflord on April 4, 2013
  57. physics

    A 30 ohm resistor is connected in parallel with a variable resistance R. The parallel combination is then connected in series with a 6 ohm resistor and connected across a 120 V source. Find the minimum value of R if the power taken by R is equal to the

    asked by Oscar on March 25, 2017
  58. math for managers

    Adam is 3 times as old as Cynthia and Fred is 16 years younger than Adam. One year ago, Adam's age was twice the sum of Cynthia's and Fred's age. Find their present age: (Write answer as Adam is __, Cynthia is __, Fred is __)

    asked by Anonymous on September 20, 2015
  59. PLZ help!! Stats....

    In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that: (A) exactly two will have this mild side effect (B) at least

    asked by Jennifer on October 25, 2011
  60. trig integration

    i'm having trouble evaluating the integral at pi/2 and 0. i know: s (at pi/2 and 0) sin^2 (2x)dx= s 1/2[1-cos(2x)]dx= s 1/2(x-sin(4x))dx= (x/2)- 1/8[sin (4x)] i don't understand how you get pi/4 You made a few mistakes, check again. But you don't need to

    asked by christine on February 18, 2007
  61. Algebra

    A total of $7000 is invested in three accounts. Some was invested at 6%, some at 8%, and the rest at 9%. find the amount invested at each rate if the total interest for one year was $555 and the amount invested at 8% was three times the amount invested at

    asked by Diego on December 4, 2014
  62. Math Please Help !!!!!!!!

    A football team runs 11 plays. There are 3 plays that result in a loss of 2 yards each and 8 plays that result in a gain of 4 yards each. To find the total yards gained, Art evaluates the expression 3(-2)+ 8(4). Bella first finds the total yards lost, 6,

    asked by Maryam (: on September 27, 2012
  63. physics

    A student holds a laser that emits light of wavelength 641.5 nm. The laser beam passes though a pair of slits separated by 0.400 mm, in a glass plate attached to the front of the laser. The beam then falls perpendicularly on a screen, creating an

    asked by James urgent on March 21, 2016
  64. Physics: Non uniform motion

    I have not done much physics before: I don't get how to do questions that deal with what happened in a particular SECOND So questions like: - A stone which is dropped from rest into a mine shaft falls a distance of 24.5 m DURING THE LAST SECOND. Find depth

    asked by Anne on October 2, 2008
  65. physics

    Please reference the illustration at screenshotsfirefoxcom/fDDGSaztdbf0b7Uh/brilliantorg for the following problem: A bunch of bananas of total weight W is hung at one end of a string passing over a perfectly smooth pulley. At the other end, a monkey

    asked by unowen on December 28, 2017
  66. Foreign languages

    I urgently need you to check these sentences, too. Thank you. 1) Pay in cash (or pay cash?) 2) Have you ever tried shopping on line OR online shopping? 3) They are planning to open a shopping centre on the edge/on the outskirts of town. 3) Imagine to dance

    asked by Mike on June 19, 2012
  67. Chemistry

    I'm sorry I'm just really confused by ionization energies and the heat of formation. Could you explain how to set up this problem? Use the data (kJ) for ionization energies, electron affinities and heats of formation to find the lattice energy of Fe3O2(s)

    asked by Marissa on January 27, 2011
  68. MGT help

    Set achievable goals for your work unit. I wrote this so far: If I were going to set achievable goals they would be Give an example of how this benefit has been successful (or unsuccessful) in your experience in the workplace, in school, or in your

    asked by dawn on October 27, 2008
  69. Statistics/Probability

    Bottles of water are labeled as containing 12 oz. Statistics students weighted the content of 7 randomly chosen bottles and found the mean weight to be 12.15 oz. Assume that bottles of water are filled so that the actual amounts are normally distributed

    asked by Stuck on July 11, 2009
  70. Chemistry Help Please!!!

    Find Net Ionic equation for hydrolysis , Expression for equilibrium constant (Ka or Kb) and Value of (Ka or Kb) Net Ionic equations I've got NaC2H3O2 == CH3COO^-+H2O -->CH3COOH+OH^- Na2CO3 ==== CO3 + 2H2O → H2CO3 + 2-OH Kb = [H2CO3] [-OH]2 / [CO3]. Kb =

    asked by Ahmed on April 3, 2014
  71. Chemistry

    How can I react methanol (CH3OH) with silicylic acid (C7H6O3)to produce methyl salicylate (C8H8O3)? I am trying to find the chemical equation. So far I have this: CH3OH+C7H6O3->C8H8O3+? It is easier to see what is happening if you draw the complete

    asked by Corin on May 2, 2007
  72. ela

    how many high students allow students to pay for school lunch? how much the income has to be in order not to pay for lunch? The guidelines vary from state to state, you have to go to your school to find out. Family size has a big impact on it, as well as

    asked by anais on March 8, 2007
  73. physics

    a woman is draining her fish tank by siphoning the water into an outdoor drain the rectangular tank has footprint area A and depth H . the drain is located a distance D below the surface of the water in the tank , where D>>H . the cross section area of the

    asked by momen on January 1, 2017
  74. math

    Blockbust video collected data to figure out how many movies they were renting per month. After 5 months, the store wanted to analyze their data to find diffrent statistical measures. Data: Month Movies Rented 1 523 2 625 3 550 4 604 5 864 outlier: 864

    asked by Destiny on March 16, 2011
  75. History!!

    PLEASE PLEASE PLEASE HELP ME!!

    asked by Marie on October 1, 2013
  76. Physics 11

    A 140 kg stationary crate is pulled by a force of 390 N along a horizontal surface. a) The coefficient of static friction between crate and surface is s = 0.25. Is the applied force large enough to begin moving the crate? Use physics calculations to

    asked by Rose on July 9, 2017
  77. Physics

    An engine of the orbital maneuvering system (OMS) on a space shuttle exerts a force of for 3.90 s, exhausting a negligible mass of fuel relative to the 95,000-kg mass of the shuttle. (a) What is the impulse of the force for this 3.90 s? (b) What is the

    asked by Anonymous on June 7, 2014
  78. @ elena - intro to physics

    I posted this question earlier and thank you for respnding, but the answer you give me was incorrect. I try looking at hw you solve and cant find the mistake but when when I check your answer it said it was wrong. Can you please look over it again, I

    asked by emilia on April 15, 2012
  79. English

    Writeacher, I need your help to find exercises on the following grammar topics: 1) Defining and non-defining relative clauses. (e.g. two sentences to combine ...) 2) Wish (+ simple past, past perfect, would + inf.) 3)Indirect speech (reporting verbs such

    asked by Matthew on March 30, 2012
  80. Math 156

    1)Suppose you buy 1 ticket for $1 out of a lottery of 3000 tickets. If the prize for the one winning ticket is to be $500, what are your expected winnings? I'm assuming the answer for this one is $0.00 2)A basketball player with a free throw shooting

    asked by jessica on August 7, 2009
  81. History

    Which accurately describes why Bartolomeu Dias did not complete his journey to India? A. Dias’s food supply had run low, and the crew convinced him to return to Portugal. B. Dias’s ship crashed into the rocky shores of Madagascar, killing the entire

    asked by Rylee on November 29, 2017
  82. History

    Which accurately describes why Bartolomeu Dias did not complete his journey to India? A. Dias’s food supply had run low, and the crew convinced him to return to Portugal. B. Dias’s ship crashed into the rocky shores of Madagascar, killing the entire

    asked by Michael on November 22, 2017
  83. To DrBob222

    This is regarding the Biochemistry question postef by Grace.. I'm wasn't able to mention this in the subject section due to the large no.of characters! I apologize for any inconveniences made! In this case,to calculate pH of the solution, we should find

    asked by Shenaya on July 23, 2017
  84. Math

    in a 6 side polygon, the first two angles are equal. , the third angle is twice the equal angles, two other angles are thrice the equal angles, while the last angles is a right angles, find the value of each angles

    asked by Evi on June 14, 2016
  85. Math

    I need help! What is the area of the triangular floor space enclosed by the glass tetrahedron? Round to the nearest tenth of a square foot. Enter only the number. ( Hint : Look at the green triangle to find the base, b , of each green triangle. Because b

    asked by Bri on March 1, 2019
  86. PLEASE HELP ME!!!

    I have to do a 4 pg report on the mediterranean ineed to know the native plants. please don't give me a full report. i just want the name of the plants and a brief summary. Olive trees are in the warm parts. Some of the plants you see everywhere in most

    asked by Princess24 on November 15, 2006
  87. Statistics

    Please help. Find the probability of getting 2 hearts if the cards are drawn from a regular deck and the first card is not replaced. A true/false quiz consists of twenty questions. If a student answers the twenty questions by making random guesses, what is

    asked by Mary on December 11, 2006
  88. Chemistry

    Pharmacists sell tablets containing magnesium hydroxide, Mg(OH)2, to combat indigestion. A student carried out an investigation to find the percentage by mass of Mg(OH)2 in an indigestion tablet. The student reacted the tablet with dilute hydrochloric

    asked by Youtube on January 1, 2013
  89. Physics

    High-heeled shoes can cause tremendous pressure to be applied to the floor. Suppose the radius of a heel is 6.00 10-3 m. At times during a normal walking motion, nearly the entire body weight acts perpendicular to the surface of such a heel. Find the

    asked by Mary on April 8, 2007
  90. physics

    A de-orbit burn, similar to that presented in the previous math problem, has been performed. During this de-orbit burn a pre-calculated ∆V (delta V, change in velocity) of 290 ft/s (or 88.4 m/s) will be used to decrease the Shuttle’s altitude from 205

    asked by Levi B. on January 20, 2012
  91. Maths

    I am very greatefull to you if you guide me to solve this problem. Two circles touch externally. The sum of their areas is 130π cm2 and the distance between their centers is 14 cm. find the radii of the circles? I tried to solve this problem like this:

    asked by Ramesh Reddy on August 21, 2011
  92. physics

    Estimate the force a person must exert on a string attached to a 0.120 kg ball to make the ball revolve in a circle when the length of the string is 0.600 m. The ball makes 1.20 revolutions per second. Do not ignore the weight of the ball. In particular,

    asked by leslie on February 6, 2011
  93. Engineering Statistics

    "A study has shown that 20% of all college textbooks have a price of $90 or higher. It is known that the standard deviation of the prices of all college textbooks is $9.50. Suppose the prices of all college textbooks have a normal distribution. What is the

    asked by Christian on October 11, 2011
  94. physics

    You hold a hose 45 degrees to the horizontal and at a height of 1 m from the floor. The water reaches a maximum distance of 10 m from where you are standing. Now you place your thumb over the end of the hose to occlude the opening by 80%, which in turn

    asked by carolyn on April 7, 2015
  95. Physics

    In a Cavendish balance apparatus suppose that M1= 1.10Kg, M2= 25.0Kg, and the rod connecting the M1 pairs is 30.0cm long. If, in each pair, M1 and M2 are 12.0cm apart center-to-center, find (a) the net force and (b) the net torque (about the rotation axis)

    asked by Jaime on January 19, 2009
  96. Interest Rates

    Homer won a prize in the lottery of $1000, payable $500 immediately and $500 plus 4% simple interest payable in 250 days. Getting impatient, Homer sells the promissory note to Moe for $450 cash after 130 days. Using a nominal 360 day year, find the simple

    asked by Melissa on March 28, 2011
  97. AlgebraB

    I have somemultiple choice questions that I need help with. Question 1 Find the measure of

    asked by Anna64 on May 18, 2012
  98. math

    A microwaveable cup-of-soup package needs to be constructed in the shape of cylinder to hold 550 cubic centimeters of soup. The sides and bottom of the container will be made of syrofoam costing 0.03 cents per square centimeter. The top will be made of

    asked by Anonymous on March 31, 2017
  99. Calculus (area of base and volume of solid)

    Can you check my work and see if I did the problem correctly? Thanks! A solid with a base formed by intersecting sine and cosine curves and built up with semi-circular cross-sections perpendicular to the x-axis. Find the area of the base and the volume of

    asked by Anonymous on May 22, 2008
  100. chemistry desperately

    i am completely lost, i confused myself. i need to find the concentration of HC2H3O2 HC2H3O2 + NaOH ==> NaC2H3O2 + HOH NaOH C= 0.3 M v= 0.25 L n= 0.075 moles M= 40.00g/mol m= 3.00 g NaC2H3O2 n= 0.075 moles m= 0.4973 g(ammount of acetic acid in solution)

    asked by diana on December 16, 2008

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