1. Chemistry

    How much mg of iron are there in 100g of spinach. if we burned 5.20g of spinach and added 10 ml of 2.0 M HCl into the spinach ashes.Then filtered the ashes and used 5 ml of that solution to put it in a testube and added 5 ml of 1.5 M KSCN in the testube.

    asked by Jason on November 14, 2016
  2. math

    a football player attempts a field goal from a distance of 52 yards. The ball reaches a maxium height of 9 yrds and lands 8 yards behind the uprights. If the uprights are 3 yards high. algebraically determine if the field goal was successful

    asked by Q on November 6, 2014
  3. Physics

    A 650 kg roller coaster car has two points of reference given to an observer. Point A, at a height of 120 m, the cart is moving at 3.40 m/s. Later on in the ride, at point B, the cart is moving at 28.2 m/s. Determine the height at point B. None of the

    asked by Help on December 16, 2016
  4. Trigonometry

    The height of building AB is 100 feet. The height of building CD is 50 feet. The buildings are on opposite sides of an avenue that is 90 feet wide. From a point E on the avenue, the measure of the angle of elevation to B is 55º. Determine the distance

    asked by Quinn on November 29, 2018
  5. Biology

    Put the following procedures of gene therapy in order: a. The healthy gene is delivered to a cell in an inactivated virus. b. Researchers determine which gene is mutated and causes the disease. c. The functioning protein is used in the cell. d. The cell

    asked by John on June 4, 2009
  6. Math

    $ 2631 is deposited into an account for 15 years. Determine the accumulation if interest is 8.01 % compounded (a) monthly, (b) daily, (c) continuously. (Round-off your answers to the nearest cent.) The accumulation based on (a) monthly compounding is $ ;

    asked by LI on December 11, 2011
  7. math

    State whether the events described are independent or dependent and determine the probability: A card is pulled from a well shuffled deck of standard playing cards and is not put back in the deck. A second card is drawn from the deck. What is the

    asked by Lo on April 27, 2011
  8. math

    State whether the events described are independent or dependent and determine the probability: A card is pulled from a well shuffled deck of standard playing cards and is not put back in the deck. A second card is drawn from the deck. What is the

    asked by Lo on April 25, 2011
  9. Comprehensive secondary school

    Determine the mass of copper(ii)trioxonitrate(v) that will be formed when 15grams of copper is added to excess dilute trioxonitrate(v).{cu=63.5,N=14,O=16} solution cu(No3)2=Cu N2 O6 =63.5+14x2+16x6 =63.5+28+96 =187.5 Number of mole=mass/molar mass

    asked by Pearl on November 14, 2015
  10. calculus

    let f(t) = 2*pi*t + sin(2*pi*t) a) find value of t in open interval (0,2) for which the tangent line at (t, f(t)) is parallel to the line through (0,0( and (2, 4pi) b) suppose the given funtion describes the position of a particle on the x-axis for 0

    asked by zoe on November 1, 2011
  11. geometry

    Jorge put colored cards into a bag. Two of the cards were green, three were red, one was orange, two were blue, and two were purple. Jorge wants to find the probability that he will pull an orange card from the bag. What step does Jorge take to determine

    asked by Samantha on May 2, 2013
  12. Chemistry

    Hydrogen gas dissolves in palladium with the hydrogen molecules going into the spaces between the metal ions. Determine the molarity, molality, and percent by mass of the H2:Pd solution (d=10.8g/cm)containing 0.94g hydrogen gas dissolved in 215 grams of

    asked by James on February 17, 2012
  13. program planning

    The purpose of a home visit is to A. determine the income level of the child's family.B. understand the interactions that go on at home between the child and the family.C. compare the child's actions with those of brothers and sisters.D. see if the child's

    asked by Amanda on October 15, 2014
  14. Alg 1.

    The local zoo keeps track of how many dragonflies are breeding in their insect exhibit each day. Day: 1, 2, 3, 4, 5 Dragonflies: 9, 18, 36, 72, 144 It's exponential growth. A. Write an equation for the function that models the data. B. Use your equation to

    asked by Vanessa on November 2, 2011
  15. Physics

    A 20 kg slab is to be pulled up a plane inclined 20 degrees with the horizontal at a constant speed by a force that is directed 15 degrees above the surface of the inclined plane. Determine the magnitude of the force necessary to perform the task. The

    asked by ylopez on July 4, 2016
  16. math

    okay, sorry for last post but this one i'm stuck on. Use the vertical line test to determine if the relation {(–6, –2), (–2, 6), (0, 3), (3, 5)} is a function. Explain your response sorry that i cant put the graph down. those numbers are points in a

    asked by SkatingDJ on January 11, 2015
  17. Art

    Assignment Type: Individual Project Deliverable Length: 500-800 words (not including references) Points Possible: 125 Due Date: 8/16/2009 11:59:59 PM CT Choose three (3) works of art from three artists from the Baroque period through the Postmodern era.

    asked by Korrina on August 14, 2009
  18. math

    I have a math question for my cell biology class. A molecule exchanges places with its neighbor every 10^-7 seconds. It will diffuse from one end of a 2 micrometer cell to the other in 1second. Ok now I have a 6M x 6M room filled with 4cm ping pong balls.

    asked by Amy on September 9, 2012
  19. college

    In an isometric exercise a person places a hand on a scale and pushes vertically downward, keeping the forearm horizontal. This is possible because the triceps muscle applies an upward force Marrowbold perpendicular to the arm, as the drawing indicates.

    asked by Anonymous on November 25, 2010
  20. chemistry

    Metal Specific Heat (J/g-C) Al (s) 0.900 Au(s) 0.129 Cu(s) 0.385 Fe(s) 0.444 Hg(l) 0.139 H2O(l) 4.184 C2H5OH(l) 2.46 Using the above table, determine the final temperature if 713.6J is released from a 48.2g sample of copper initially at 93.8o C. -q = mass

    asked by alex on October 25, 2010
  21. physics

    Question part Points Submissions 1 0/1 1/3 Total 0/1 A 13.0 m long conveyor belt, inclined at 30.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has a mass of 1.0 kg,

    asked by Manny Aragon on December 9, 2009
  22. math

    A specific brand of bike comes in two frames, for males or females. Each frame comes in a choice of two colors, red and blue, and with a choice of three seats, soft, medium, and hard. a) Use the counting principle to determine the number of different

    asked by Jennifer on March 26, 2007
  23. busieness

    questions 2) List the facts that have the most bearing on the decision. 4)Explain what each affected person would want you to do about the issue. 5)List three alternative actions and identify the best and worst case scenario for each alternative, anyone

    asked by frank on May 8, 2011
  24. math

    A specific brand of bike comes in two frames, for males or females. Each frame comes in a choice of two colors, red and blue, and with a choice of three seats, soft, medium, and hard. a) Use the counting principle to determine the number of different

    asked by michael on March 26, 2007
  25. statistics

    A specific brand of bike comes in two frames, for males or females. Each frame comes in a choice of two colors, red and blue, and with a choice of three seats, soft, medium, and hard. a) Use the counting principle to determine the number of different

    asked by Rose on December 13, 2007
  26. math

    1. Finding the Counterfeit Coin. You have 5 coins. You know that one of them is counterfeit and weighs less than the others. Suppose also that you have a balance scale. Is there a strategy for finding the counterfeit coin using the balance scale only

    asked by al on September 30, 2014
  27. Physics

    A bullet is fired into a block of wood with speed 250 m/s. The block is attached to a spring that has a spring of 200 N/m. The block embedded bullet compresses the spring a distance of 30.0 cm to the right. Determine the mass of the wooden block

    asked by Dale on March 21, 2014
  28. Physics

    Use Bernoulli's equation to determine the velocity with which water will exit from a hole in a uniform cylinder when the cylinder is filled to a point 3.1 meters above the hole, assuming that the water in the cylinder moves with negligible velocity.

    asked by Plaster on April 6, 2010
  29. Chemistry 101

    A crown is determine to weigh 2.65 kg. When this crown is submerged in a full basin of water, the overflow is found to be 145 mL. Is the crown pure gold or a gold-silver alloy? The density of silver is 10.5 g/mL and gold that of gold is 19.3 g/mL

    asked by Lilly on January 18, 2016
  30. Physics

    Two springs are attached side by side to a green box of mass M. Determine an expression that describes the period of motion of the box attached to this combination of springs. The two individual springs have spring constants K1 and K2 respectively.

    asked by Rose on January 21, 2013
  31. physics

    3. A satellite of mass 500 kg orbits the Earth with a period of 6000 s. The Earth has a mass of 5.98 x 1024 kg. (a) Calculate the magnitude of the Earth's gravitational force on the satellite. (b) Determine the altitude of the satellite above the Earth's

    asked by BO on October 15, 2012
  32. physics

    if the weight of the block,W,is 2.5 kilogram,the coefficient of static friction,0.25,and the coefficient of kinetic friction,0.15,determine: (a) the force necessary to hold the block sliding down (b) the force necessary to pull the block up the plane with

    asked by helpppp meeeeeeee PHYSICS......................... on March 6, 2013
  33. Math

    For problems 1 and 2, determine how many solutions there are for each triangle. You do not have to solve the triangle. 1. A = 29°, a = 13, c = 27 2. A = 100.1°, a = 20, b = 11 For problems 3-6, solve each triangle using the Law of Sines. If there is no

    asked by Tabitha on January 13, 2011
  34. Calculus

    For the Arithmetic sequence, determine the value of t1, and d. An explicit formula for the general term. And T20. 7/4, 1, 1/4, -1/2 I don't know how to do this the fraction way, but by doing this the decimal way, the common difference I got is -0.75. T1

    asked by Anonymous on September 20, 2011
  35. About Chemistry

    The vapor pressure of pure water at 25 °C is 23.8 torr. Determine the vapor pressure (torr) of water at 25 °C above a solution prepared by dissolving 35 g of urea (a nonvolatile, non-electrolyte, MW = 60.0 g/mol) in 75 g of water. im not sure about the

    asked by BEN on September 15, 2010
  36. 8th grade Physics

    Explain whether the photons emitted by a bright light bulb are more energetic than those emitted by a dim light bulb of the same color. How does the color of the light bulbs determine the amount of energy of the electromagnetic waves?

    asked by Renee on April 27, 2010
  37. Science

    A Space Traveller determine the radius of a Planet to be half that of the earth after landing on its surface he find the acceleration due to gravity to be twice of the surface of the earth find the ratio of the mass of a planet to the earth

    asked by Saloni on August 18, 2017
  38. Chemistry

    If your solution’s final volume of 32.55 mL yields 3.6 grams of AgCl, determine the Molarity of the final solution. Also, how many milliliters of a 1.85 M solution of AgNO3 did you add to an excess of aqueous NaCl to provide the 3.6 grams of AgCl?

    asked by Shoba on March 26, 2013
  39. science

    To locate the epicenter of an earthquake a seismologists must determine all of the following except ? a) the difference between arrival time of P and S waves b) seismographic locations data from the seismograph locations c) the distance from the epicenter

    asked by victoria on February 18, 2014
  40. Math

    A sales representative must visit five cities. There are direct air connections between each of the cities. Use the multiplication rule of counting to determine the number of different choices the sales representative has for the order in which to visit

    asked by Ashley on July 7, 2011
  41. chemistry

    Determine the mole fraction of lithium bromate in a 6.32 M aqueous solution of lithium bromate. The density of the solution is 1.16 g mL-1. I understand that 6.32 M of solution= mols of the compound. I multiplied 1000mL by the density to get grams. I don't

    asked by everest on November 15, 2016
  42. chemisrty

    The N-N bond energy is difficult to measure. Given the values of 190 kJ/mol for the N-Cl bond energy and 240 kJ/mol for the Cl-Cl bond energy, determine the maximum de Broglie wavelength of an electron capable of breaking the N-N bond.

    asked by Anonymous on May 31, 2013
  43. Chemistry

    Use the calculation of specific heat for your metal as an example and determine the effect on specific heat if the sample temperature is changed. Does this small loss in heat significantly (>5%) affect your value for the specific heat of the metal? How

    asked by will on November 15, 2016
  44. physics

    three charges are fixed to an x, y coordinate system. a charge of +18 µC is on the y axis at y= +3.0 degree m. a charge of -12 µC is at the origin. last, a charge of +45 µC is on the x axis at x= +3.0 m. determine the magnitude and direction of the net

    asked by lara on April 27, 2010
  45. math

    Alottery has 100 tickerts which are placed in a barrel . Three tickets are drawn at random from the barrel to decide 3 prizes . If john has 3 tickets in the lottery , determine his probability of winning : A.first prize. B.first and second prize. C.all 3

    asked by katy on September 24, 2012
  46. Math - Equation of Lines

    Determine whether the following pairs of planes are coincident, parallel and distinct or neither. a) x + 3y - z - 2 = 0 and 2x + 6y - 2z - 8 = 0 TEXTBOOK ANSWER: parallel and distinct Can someone show me how to find the vector equation or parametric

    asked by Anonymous on March 25, 2008
  47. algebra

    A rental truck costs $50 plus $0.40 per mile. Write an equation that gives the cost of driving the truck x miles Use the intersection of graphs method to determine the number of miles that the truck is driven if the rental cost is $70.

    asked by Dee on February 13, 2016
  48. math 12

    The bacterium Escherichia coli, or E-coli, has a doubling period of 0.32 h. If a culture starts with 100 bacteria: (a) Determine the equation for the number of bacteria, y, in x hours. b) How many hours will pass before there are 450 bacteria in the

    asked by saya on May 6, 2012
  49. Math help algebra

    You have a gift card for your favorite clothing store for the amount of $60. You have found a shirt you want to buy that costs $15. If you don't want to spend more than the amount of the gift card, which of the following inequalities could be used to

    asked by Mia on September 29, 2014
  50. Science

    "a drop of oil (volume 0.05cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to cover an area of 40cm2. Assume that the oil film has a uniform thickness equal to the diameter of an oil molecule. Calculate the

    asked by Hol on March 12, 2007
  51. physics

    If instead, the swimmer makes 77.5 laps in the same pool in 1.5 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed.

    asked by Dave on January 21, 2014
  52. Physics

    If instead, the swimmer makes 93.5 laps in the same pool in 4 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed.

    asked by Anonymous on January 20, 2013
  53. social studies

    Determine which of the budget items listed would be necessary in order to calculate a functional, line-item, and program budget. Mark an “X” for each budget item that would be used in each budget type. Budget items may be used more than once.

    asked by carol on September 5, 2007
  54. Physics

    A quarterback throws a pass at an angle of 40 degrees above the horizontal with an initial speed of 20 m/s. The ball is caught by the receiver 2.55 seconds later. Determine horizontal velocity, vertical initial velocity, the distance ball was thrown, and

    asked by Jose Luis on October 4, 2015
  55. Calculus

    A marble is dropped from the top of the empire state building. a. Determine the position and velocity functions for the marble b. What is the average velocity for the first 3 seconds of flight? c. Whatisthespeedofthemarblewhent=0? t=3? t=6? d. How long

    asked by Connor on November 8, 2014
  56. physics

    A dentist's drill starts from rest. After 2.50 s of constant angular acceleration it turns at a rate of 3.0 104 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this

    asked by monic on November 14, 2012
  57. Physics

    A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.1 104 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this

    asked by Allie on October 6, 2011
  58. science

    A mass 'm'is atached to one of an unstreched spring,spring constant k,at time t=0 the free end of the spring experiences a constant acceleration'a',away from the mass. Using the Laplace transformations, a)Find the position 'x' of 'm' as a function of time.

    asked by vijaya on July 31, 2008
  59. statistics

    Then, for the following two examples, determine the null and alternative as well as state which one represents the claim. State what type of test will be completed: left-tailed, right-tailed, or two-tailed. The average score of the first exam for the class

    asked by lashawn on December 16, 2012
  60. Principle

    "the maximum blood pressure in the upper arm of healthy person is about 12mmHg.If a vertical tube open to the atmosphere is connected to the vein in the arm of the person,determine how high the blood will rise in the tube.Take the density of blood to be

    asked by NONO on March 6, 2012
  61. Physics

    An electron of mass 9.11 10-31 kg has an initial speed of 2.60 105 m/s. It travels in a straight line, and its speed increases to 6.00 105 m/s in a distance of 4.40 cm. Assume its acceleration is constant. (a) Determine the magnitude of the force exerted

    asked by Jack on October 2, 2016
  62. Physics

    A vehicle of mass 1200 kg accelerates uniformly from rest to a velocity of 15 m/s in 5 seconds. It continues at this velocity for 15 seconds before decelerating uniformly at a rate of 5m/s2 to rest. Determine the following: (i)The acceleration (ii)The time

    asked by J.Kruger on September 21, 2016
  63. Math (Combinatorics)

    A lottery ball drawing machine has 50 balls, each labeled with a distinct integer from 1 to 50. Every Sunday, four different balls are drawn to determine the winning numbers. You have last Sunday's ticket with the numbers {3,7,12,15}. You missed the

    asked by Shin on May 6, 2013
  64. Chemistry

    In terms of aromatic compounds, how do I determine which pairs of structures are correct representations of resonance forms? For example in these structures: img33.imageshack.us/img33/2756/70725074.jpg I know there has to be a single bond, double bond,

    asked by Hatala on July 14, 2009
  65. physics

    At some instant, a particle traveling in a horizontal circular path of radius 3.30 m has a total acceleration with a magnitude of 18.0 m/s2 and a constant tangential acceleration of 12.0 m/s2. Determine the speed of the particle at this instant and (1/8)

    asked by Christine on September 25, 2017
  66. physics

    The block in the drawing has dimensions L0×2L0×3L0,where L0 =0.5 m. The block has a thermal conductivity of 150 J/(s·m·C˚). In drawings A, B, and C, heat is conducted through the block in three different directions; in each case the temperature of the

    asked by Anonymous on November 26, 2012
  67. physic

    The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a cheetah starts from rest and runs 50 m in a straight line, reaching a final speed of 79 km/h. Determine the cheetah's average acceleration during the short

    asked by Jack on September 8, 2017
  68. Computer Applications

    John is creating a presentation. Before he starts, he takes into consideration several aspects that can help to determine how the presentation should be set up. Three of the following are important considerations at this initial stage. Which of the

    asked by Tiana on December 2, 2014
  69. physics

    You decide to use your garden hose to wash your garage door. The water shoots out at a rate of 10 kg/s and a speed of 16 m/s with respect to the hose. When the water hits the garage, its speed decreases to zero. Determine the force that the water exerts on

    asked by Abbie on November 13, 2016
  70. Chemistry

    Heating 1.0 mole of ammonia and 1.0 mole of molecular nitrogen at 723k in a 10L flask,the following equilibrium is observed: N2(g)+3H2(g)=2NH3(g) when the equilibrium is reached ,0.40 moles of molecular hydrogen are present in the flask,determine Kp and Kc

    asked by Gianna mele on September 19, 2016
  71. 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 on February 12, 2012
  72. science chemistry

    Brandon prepares a potassium hydroxide solution (KOH) that he uses during a titration to determine the unknown concentration of a hydrochloric acid solution calculate the mass of potassium hydroxide that is need to prepare 250 cm^3 of a standard 0,125

    asked by dennis on June 17, 2015
  73. chemistry

    At 35 degrees C, 2.0 mmol of pure NOCI is introduced into a 2.0-L flask. The NOCI partially decomposes according to the following equilibrium equation. 2 NOCI = 2 NO + CI2 at equilibrium the concentration of NO is 0.032 mol?L. Use an ICE table to determine

    asked by Claudia on December 14, 2018
  74. chemistry - vapor pressure

    the vapor pressure of pure water at 25C is 23.8 torr. determine the vapor pressure (torr) of water at 25 C above a solution prepared by dissolving 35g of urea (a nonvolatile, non-electrolyte, MW = 60.0G/MOL) IN 76G of water. answer:21 i just want to know

    asked by billy on September 13, 2010
  75. Algebra 2

    Completing the square method allows you to solve any quadratic equation. For each of the following determine what number completes the square. I cannot find my notes on completing the square, can someone please help with these two problems? 1. x^2+8x 2.

    asked by Christian on May 21, 2007
  76. physics

    A child is twirling a 0.0165-kg ball on a string in a horizontal circle whose radius is 0.149 m. The ball travels once around the circle in 0.543 s. (a) Determine the centripetal force acting on the ball. (b) If the speed is doubled, by what factor does

    asked by heather on February 23, 2011
  77. math

    the point P(1/2, root 3/2) lies on the unit circle. a) sketch the unit circle showing the point P and the standard position angle theta drawn to the terminal arm containing point P. b) determine the exact values of the six trigonometric ratios of theta.

    asked by Anonymous on October 18, 2016
  78. Physics

    A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.1x10^4 rev/min. (a) Find the drill's angular acceleration. rad/s2 (b) Determine the angle (in radians) through which the drill rotates during this

    asked by Allie on October 7, 2011
  79. Statistics

    Construct the appropriate control chart for the observations listed below, using 3 sigma limits. Product Number - Number of defects 1 - 3 2 - 3 3 - 6 4 - 5 5 - 3 6 - 5 7 - 2 8 - 2 9 - 3 10 - 4 11 - 6 a. Determine the upper and lower control limits. b.

    asked by Johnny on January 30, 2009
  80. math

    Determine the number of pounds of nuts selling for $6 per pound and raisins selling for $3 per pound that should be combined to create 60 pounds of a trail mix selling for $5 per pound.

    asked by Anonymous on August 10, 2015
  81. pre-algebra

    if a serving has 346 calories, 46 grams of carbs, and 18 grams of protein, determine the # of grams of fat in the serving. c=346, h=46, p=18 f=346-4(46)-9(18)/9 I'm getting a completely different answer than what it's supposed to be. HELP!

    asked by tmouery on December 5, 2012
  82. Physical science

    Determine the number of moles of sodium hydroxide produced when 2 moles of sodium and 3 moles of water react to form sodium hydroxide and hydrogen gas.

    asked by Maria on March 23, 2017
  83. Math

    Determine whether the number is rational, irrational, or not a real number. 1. 3.316624. . . 2. 3.16227. . . 3. 0 4. square root of 14 5. square root of 10/3 6. -4 7. square root of 9/16 8. 3/0 9. 6.283185. . . 10. 8.432467. . . 11. 0.25

    asked by Angelina on March 2, 2017
  84. probability

    A jar contains 3 red balls and 2 green balls. You draw one ball at random. Determine the probability of selecting a. red b. green c. blue d. red or green

    asked by Evangelina on March 17, 2011
  85. geometry

    A triangle's base is 14 inches less than 2 times its height. If h represents the height in inches, and the total area of the triangle is 54 square inches, which of the following equations can be used to determine the height?

    asked by Anonymous on May 4, 2010
  86. Physics

    After 12.6 s, a spinning roulette wheel has slowed down to an angular velocity of 1.32 rad/s. During this time, the wheel has an angular acceleration of -6.07 rad/s2. Determine the angular displacement of the wheel.

    asked by Lem on December 17, 2018
  87. Check my answers. Algebra

    Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s and the square of t. -I

    asked by Soly on October 10, 2007
  88. Variation-Check Problems

    Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s and the square of t. -I

    asked by Soly on October 8, 2007
  89. variation

    Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s and the square of t. -I

    asked by Soly on October 9, 2007
  90. variation

    Can you please check my answers? Thanxs! Write an equation that expresses the relationship. Use k as the constant of variation. 20. f varies jointly as b and the square of c. -I got: f=kbc^2 22. r varies jointly as the square of s and the square of t. -I

    asked by Soly on October 9, 2007
  91. physics

    an 88.kg fireman slides 5.9 meters down a fire pole. He holds the pole, which exerts a 520N steady resistive force on the fireman. At the bottom he slows down to a stop in 0.43m by bending his knees. determine the acceleration while stopping and the time

    asked by Anissa on January 20, 2017
  92. Chem: x-ray

    Experiment to obtain the X-ray diffraction peaks of an unknown metal. Radiation is K_alpha from Cu. Through these diffraction peaks you wanted to determine: (a) whether the cell is SC, BCC, or FCC (b) the (hkl) value of the peaks (c) the lattice parameter

    asked by Anonymous on July 26, 2014
  93. Physics

    A 2110 kg car traveling at 10.7 m/s collides with a 2780 kg car that is initially at rest at the stoplight. The cars stick together and move 2.00 m before friction causes them to stop. Determine the coefficient of kinetic friction betwen the cars and the

    asked by Anonymous on October 30, 2014
  94. physics

    A 2100 kg car traveling at 12.0 m/s collides with a 2780 kg car that is initially at rest at the stoplight. The cars stick together and move 3.90 m before friction causes them to stop. Determine the coefficient of kinetic friction betwen the cars and the

    asked by Bri on January 25, 2015
  95. Physics

    A 2110 kg car traveling at 10.7 m/s collides with a 2780 kg car that is initially at rest at the stoplight. The cars stick together and move 2.00 m before friction causes them to stop. Determine the coefficient of kinetic friction betwen the cars and the

    asked by Anonymous on October 30, 2014
  96. physics

    A visitors to a lighthouse wishes to determine the height of the tower. The visitor ties a spool of thread to a small rock to make a simple pendulum, then hangs the pendulum down a spiral staircase in the center of the tower. The period of oscillation is

    asked by imel on February 16, 2012
  97. Language Arts

    Think about the work you completed in your reading character role. Determine the ideas that would be most worthy to share in a literary discussion about Dragonwings. Provide an explanation for your choices. How did the role you selected and the work you

    asked by PLZ HELP on June 12, 2017
  98. Physics

    A 2050 kg car traveling at 11.0 m/s collides with a 2780 kg car that is initially at rest at the stoplight. The cars stick together and move 3.10 m before friction causes them to stop. Determine the coefficient of kinetic friction betwen the cars and the

    asked by Terence on February 24, 2015
  99. Physics I (Classical)

    A flat go-kart track consists of two straightways 100 m long with semicircular ends which have a radius of 25.0 m. A go-kart executes the curved end with a constant tangential acceleration while slowing from 12.4 m/s to 5.9 m/s. Determine the magnitude of

    asked by Victoria on June 5, 2016
  100. physics

    A rotating door is made from four rectangular sections, as indicated in the drawing. The mass of each section is 86 kg. A person pushes on the outer edge of one section with a force of F = 61 N that is directed perpendicular to the section. Determine the

    asked by Cindy on May 31, 2012

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