Questions Asked on
May 14, 2013

  1. Math Help? Check my answers.

    1. You mix the letters: S E M I T R O P I C A and L thoroughly. Without looking you draw one letter. Find the probability that you select a vowel. From a fraction to simplest form. 12/5 5/12 1/3 7/12 2. You roll a standard cube once. Fine P(0) 7/6 1 1/2 0

    asked by Rebekah
  2. 8need a function rh grade math

    a 154 lb person burns 420 calories per hr riding an exercise bike at 15 mph. Need a function rule to represent the total calories burned over time.

    asked by Jane
  3. Polynomial help

    list 3 different ways to write 5^11 as the product of two powers.Explain why all of your expressions are equal to 5^11.

    asked by Alex
  4. Calculus

    An OPEN box has a square base and a volume of 108 cubic inches and is constructed from a tin sheet. Find the dimensions of the box, assuming a minimum amount of material is used in it's construction. HINT: the goal is to minimize the surface are of the

    asked by Jennifer
  5. chemistry

    5. Meals-ready-to-eat (MREs) are military meals that can be heated on a flameless heater. The heat is produced by the following reaction: Mg(s) + 2H2O(l) --> Mg(OH)2(s) + H2(g) Calculate the number of grams of Mg needed for this reaction to release enough

    asked by tra
  6. Equation help?

    From midnight to 6:00 am, the temperature rose 8°C. At 6:00 am, the temperature was –20°C. What was the temperature at midnight. I know it's -20-8 = -28 C temp at 12am, but how do I write it an equation?

    asked by Moby
  7. math

    A juice company decides to test six different brands of juice by comparing each brand with each of the other brands. How many different pairs of the six juices will be tested? 10 12 15 7 is it 15?

    asked by Anonymous
  8. trigonometry

    find acute angle A and B satisfying secAcotB-secA-2cotB+2=0

    asked by ajit yadav
  9. math

    A graph includes the ordered pair (2,4). Write two different rules that would be possible for this graph. Explain how you found your answer.

    asked by confused mom
  10. Equation Ms Sue?

    From midnight to 6:00 am, the temperature rose 8°C. At 6:00 am, the temperature was –20°C. What was the temperature at midnight. I know it's -20-8 = -28 C temp at 12am, but how do I write it an equation?

    asked by Moby
  11. physics

    he index of refraction of crown glass is 1.53 for violet light, and it is 1.51 for red light. (a) What is the speed of violet light in crown glass? (b) What is the speed of red light in crown glass?

    asked by A
  12. physics

    A guitar string is 92 cm long and has a mass of 3.7 g. The length L from the bridge to the support post is 65 cm, and the string is under a tension of 570 N. What is the frequency of the fundamental tone thanks!

    asked by BG
  13. Math~Reiny Could you help with this question?

    List three different ways to write 5^11 as the product of two powers. Explain why all three of your expressions are equal to 5^11. Plz help it's urgent.

    asked by Gabby
  14. english

    When naval engagements occur they are carried on at such great---------- that the intervention of mist may obscure the contestants from each other 1 extremes ,2 risk , 3 ranges 4,pace, 5 disadvantegc

    asked by joy
  15. chemistry

    3. When a mixture of 10.0 grams of acetylene (C2H2) and 10.0 grams of oxygen (O2) is ignited, the resulting combustion reaction produces CO2 and H2O. A) Write a balanced equation for this reaction. B) What is the limiting reactant? C) How many grams of C2,

    asked by tra
  16. math

    how to describe a model that represents 3/3x4/4?

    asked by jack
  17. chem

    6. What is wrong with the following electron configurations for atoms in their ground states? a) 1s^2 2s^2 3s^1 b) (Ne) 2s^2 2p^3 c) (Ne) 3s^2 3d^5

    asked by tra
  18. math

    You and a friend are biking in opposite directions starting from the same point. You travel 108 feet every 8 seconds. Your friend travels 63 feet every 6 seconds. How far apart are you and your friend after 15 minutes?

    asked by rena
  19. Literature (Ms. Sue)(or Writeacher)

    The short story is called Chicoria by Rudolfo A. Anaya. How does the server respond when Chicoria says he expects to be fed well at the rancher's table? My answer: The servant becomes rather surprised by Chicoria's statement, causing him to explain to

    asked by Anonymous
  20. math

    Assume you want to accumulate $125,000 for a long-range goal in 40 years. You have two choices. Plan A is an account with annual compounding and an APR of 5%. Plan B is an account with continuous compounding and an APR of 4.5%. How much of an investment

    asked by emma
  21. math

    What is The ratio of w's to consonants in this sentence? Wes and Willow went walking.

    asked by Anonymous
  22. physics

    the space shuttle typically orbits 400 km above the earths surface. The earth has a mass of 5.98 * 10^24 kg and a radius of 6380km. A) How much would a 2000 kg part for the space station weigh when it has been lifted to that orbit in the shuttles cargo

    asked by marie
  23. chem

    1. The total power used by humans worldwide is approximately 15 TW (terawatts). Sunlight striking the Earth provides 1.336 kW per square meter (assuming no clouds). The surface area of Earth is approximately 197,000,000 square miles. How much of Earth’s

    asked by tra
  24. arithmetic

    there are n arithmetic means between 5 and 32 such that the ratio between the 3rd and 7th means is 7:13,find the value of n.

    asked by Hussain
  25. Math

    An apprentice Carpenter has designed a wooden coffee table. he expects to sell 25 such tables for 95$ each at an upcoming artisan market. by conducting a survey, he determines that for each $2 reduction in the price of the table, he will likely gain three

    asked by lola
  26. English

    (1) Brenda would have liked to have taken her vacation at the beach. (2) However, the weather forecast on the television called for rain. (3) Also, her fiancé, Max, wanted to vacation in the mountains. (4) After a heated discussion, Brenda and Max decided

    asked by NANA
  27. chemistry

    balance the net ionic equation for the overall reaction. Pt | Fe2+(aq), Fe3+(aq) || I-(aq) | AgI(s) | Ag(s) a) Fe3+(aq) + Ag(s) + I-(aq) → Fe2+(aq) + AgI(s) b) Fe2+(aq) + Ag(s) + I-(aq) → Fe3+(aq) + AgI(s) c) Fe3+(aq) + AgI(s) → Fe2+(aq) + Ag(s) +

    asked by Lana
  28. Physics helpp

    Newtons 2nd law The force of earths gravity is about 10 N downward. Whats the acceleration of a 15kg backpack if lifted with a 15N force??

    asked by Kate
  29. chemistry

    4. A 35.0 mL sample of 1.00 M KBr and a 60.0-mL sample of 0.600 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 50.0 mL. What is the molarity of the KBr in the final solution?

    asked by tra
  30. chemistry

    A 211 g sample of barium carbonate, BaCO3, reacts with a solution of nitric acid to give bar- ium nitrate, carbon dioxide and water. If the acid is present in excess, what mass and volume of dry carbon dioxide gas at STP will be produced

    asked by myrtle
  31. physics

    A steel rod of length 1m is heated from 25°c to 75°c keeping its length constant.The longitudinal strain developed in the rod is:(steel:12 X 10^-6/°c) "6X10^-4" ; "-6X10^-4" ; "0" please help me as soon as possible by explain this.

    asked by duke
  32. Physics

    A roller coaster has a mass of 425 kg. It sits at the top of a hill with height 66 m. If it drops from this hill, how fast is it going when it reaches the bottom? (Assume there is no air resistance or friction.)

    asked by Robin
  33. physics

    The convex lens of a copy machine has a focal length of 22.0 cm. A letter to be copied is placed 37.0 cm from the lens. (a) How far from the lens is the copy paper? (b) How much larger will the copy be?

    asked by A
  34. chemistry

    how much of 0.1 M NaOH is needed to neutralize 5mL of 0.1 M of HCL to a ph 7(color on the ph scale)...Thank you

    asked by mae
  35. math

    a 10-foot ladder is placed against the side of a building as shown i figure i below.the bottom of the ladder is 8 feet from the base of the building .in the order to increase the reach of the ladder against the building ,it is moved 4 feet closer to the

    asked by kirandeep
  36. Justice system

    1. __________ are the largest and most visible segment of the criminal justice system. A. The police B. Court clerks C. The courts D. Attorneys is it A 2. Structurally, policing in the United States is: A. centralized. B. decentralized. C. interdependent.

    asked by Amy
  37. Math

    25. Edith earns an annual gross salary of $17,500. She has 28% of her gross salary withheld for taxes and other deductions. What is the net pay of each paycheck if she is paid weekly? $274.04 $43.87 $242.31 26. Franklin deposited $1,400 in a savings

    asked by Noelle
  38. physics

    A beam of light strikes the flat, glass side of a water-filled aquarium at an angle of 37.5° to the normal. For glass, n = 1.50. (a) At what angle does the beam enter the glass? (b) At what angle does the beam enter the water?

    asked by A
  39. Chemistry

    0.1 mol of HCl is added to 1 L of water. What is [H+] and [OH-]?

    asked by Krystal
  40. physics

    A diamond's index of refraction for red light, 656 nm, is 2.410, while that for blue light, 434 nm, is 2.450. Suppose white light is incident on the diamond at 32.2°. Find the angles of refraction for red and blue light. red light? blue light?

    asked by A
  41. chemistry

    4. A 35.0 mL sample of 1.00 M KBr and a 60.0-mL sample of 0.600 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 50.0 mL. What is the molarity of the KBr in the final solution?

    asked by tra
  42. physics

    In order to clearly read a book 16 cm away, a farsighted girl needs an image to be 36 cm from her eyes. What focal length is needed for the lens in her eyeglasses?

    asked by A
  43. math

    Judy frog brings 6 socks on a trip. one third of the socks are red. the rest are green. how maby socks are red? how many are green?

    asked by Miyana
  44. Math

    what is the area of a circle with a circumference of 43.98226in.?

    asked by Gabriela Lucas
  45. algegra

    a person jumps off of a 6 foot high diving board with an initial velocity of 13 feet per second. how many seconds does it take the person to hit the water?

    asked by amy
  46. Math~Polynomials

    5)Find the degree of -5w-4w^2+7w+16(1point) -5 16 14*** 3 Ok I put stars next to my answer though I'm not sure if I'm correct.. or not so Steve could you tell me if my calculations are way off or if they are correct?....

    asked by Gabby
  47. Physics

    Newtons second law What net force acting on a 14kg wagon produces an acceleration of 1.5 m/s^2?

    asked by Kate
  48. Social Studies

    What happened to unions after the protest at Haymarket Square? My answer: Afterward, the Chicago police arrested hundreds of union leaders, socialists, and anarchists. Opposition to unions increased. The membership in the Knights of Labor dropped, even

    asked by Anonymous
  49. Social Studies

    Why was the South so much less industrial than the North?

    asked by Anonymous
  50. Life oriantation

    what are the 2 community Organizations that are involved in giving redress to these factors and how these community organizations are involvedin repressing these issues?

    asked by portia Thandeka MAhlobo
  51. math

    julia studied math for 3 1/3 hours during the 4 days before her last math test what was the average amount of time she studied each day

    asked by elizabeth
  52. Chemistry

    Using your experimental data, calculate E0cell. Standard voltaic cells contain 1M solutions, but we used 0.10M solutions in all of our half cells. Use the Nernst equation to calculate the standard cell potential (E0cell) from your measured Ecell and Qrxn.

    asked by Chloe
  53. algebra

    an 18-foot ladder leans against the wall of a building. the base of the ladder is 9 feet from the bulding on level ground.how many feet up the wall,to the nearest tenth of a foot,is the ladder?

    asked by kirandeep
  54. Economics

    It is 1932 and you are an economic advisor to President Roosevelt. What advice would you give the president in light of the economic problems facing the country? Where will you put the money into the economy? Will you give it to large corporations, small

    asked by Help Me Please(I NEED 2 GRADUATE) :[
  55. Social Studies

    Which of the trends started by railroads are still part of the modern business world?

    asked by Anonymous
  56. science physics

    1.) What is the Magnitude of the electrostatic force on a +5 C charge 1.75 m to the left of a -2.5 C charge? (show your work) 2.) In What direction does the force on the +5 C charge act? 3.)Calculate the magnitude of the electric field of the -2.5 C charge

    asked by Todd
  57. math

    A rectangular flower garden is surrounded by a grass border. the grass border is 5 meters wide on all sides of the flower garden and the outer dimensions are 50 meters by 40 meters. Determine the area of the grass border and show how you got this answer

    asked by Herman
  58. Social Studies

    How did Carnegie's company break the union at the Homestead mills?

    asked by Anonymous
  59. Science (chemistry) help please

    The following data was obtained from titrating a solution containing 25 mL of 0.0100 M MgCl2 solution, 1 mL of NH3OH buffer, and 10 drops of Calmagite with EDTA. Calculate the concentration of EDTA. Report the answer with three sig figs. I don't know what

    asked by andy
  60. Chemistry

    How to calculate Q in Nernst Equations, we used 0.10M solutions in all of our half cells. Nernst equation: Ecell = E0cell - RT/nF ln Q Overall reactions: Cu(s) + Pb2+(aq) ~ Cu2+(aq) + Pb(s) and 3Pb(s) + 2Al3+ ~ 3Pb2+ 2Al(s) Thank you!

    asked by Chloe
  61. chmistry

    Given that \rm S is the central atom, draw a Lewis structure of \rm OSF_4 in which the formal charges of all atoms are zero.

    asked by Papayu Domu
  62. mathematics

    Consider the following eqution x2 + 4y2 + 9z2 = 14x + 28y+42z + 147 Then the value of x+2y+3z is

    asked by Anonymous
  63. calculus (gr 12)

    the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C)

    asked by Maria
  64. physics

    A thick sheet of plastic, n = 1.500, is used as the side of an aquarium tank. Light reflected from a fish in the water has an angle of incidence of 30.0°. At what angle does the light enter the air?

    asked by A
  65. physics

    The speed of light in a certain piece of clear plastic is 1.95 108 m/s. A ray of light strikes the plastic at an angle of 21°. At what angle is the ray refracted?

    asked by A
  66. math

    Ralph, Mario, Jack, Laura, and Maria are in the math club. The club advisor will assign students to 3-person teams at the next math team competition. How many different 3-person teams can be formed from these five students? would this be 10, because of 5 *

    asked by Anonymous
  67. math

    Billy kicks a soccer ball with an initial velocity of 24 ft/sec into the goal. How long was the ball in the air? If the goalie caught the ball at a height of 4 feet from the ground, how long was the ball in the air before it was caught?

    asked by Vanessa
  68. science

    An attack helicopter is equipped with a 20- mm cannon that fires 61.6 g shells in the forward direction with a muzzle speed of 585 m/s. The fully loaded helicopter has a mass of 4890 kg. A burst of 208 shells is fired in a 2.32 s interval. What is the

    asked by Anonymous
  69. Accounting

    Clark invested $20000 cash in her business

    asked by Ranak_hasan
  70. Calculus help!

    Three forces with magnitudes 75 pound, 100 lb, and 125 pound act on an object at angles of 30 degrees, -45 degrees, and 120 degrees respectively. Find the direction and magnitude of the resultant vector.

    asked by Liz
  71. science

    The scientific binomial name of a species is Canis vulpis. Which of the following is true? A. The species belongs in the family Cranis. B. the species belongs in the genus vulpis. C. the species belongs in the genus Canis. D. the species belongs in the

    asked by Linda
  72. physics

    An organ pipe is 84 cm long and at a temperature of 20 degrees C. What is the fundamental (in Hertz) if the pipe is closed at one end thanks!

    asked by BG
  73. maths

    5x+6y=37 2x-3y=-4

    asked by chan
  74. Algebra

    An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 1,500 + 200 ln a (a ¡Ý 1)How many units are sold after spending $1,000? (Round

    asked by Jim
  75. math

    A cable 20 feet long connects the top of a flagpole to apoint on the ground that is 16 feet from the base of the pole.how tall is the flagpole? (A) 26ft (B) 10ft (C)12ft (D)8ft..

    asked by kirandeep
  76. Chemistry

    How many grams of barium nitrate is needed to form a solution with 5.00 mass% Ba (NO3)2 in 400 grams of water.

    asked by Vicki
  77. math

    Five friends went to a baseball game. Three of the friends each bought tickets for x dollars and a soda for $6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money spent.

    asked by Carabeth
  78. 7th Grade Math ~Multiplying Polynomials

    1. (2x)(10x) (1point) 20x 12x 20x^2** 5x 2. -3m(m+8) (1point) -3m^2+24 -3m^2-24m** -24m^2 -4m+5 3. 4d(2d-9) (1point) 8d-36d -d -28d^2** 8d^2-36d 4. 5b(6b-10) 11b-10 5b^2+6b-10 -b-10 30b^2-50b** Are these right

    asked by Gabby
  79. calculus

    Farmer Jones has 210 meters of fence. She wishes to construct a rectangular pen using the river as one side and dividing the pen into six separate rectangular pens as shown. What should the dimensions of the combined pens be to maximize the area enclosed?

    asked by Anonymous
  80. math

    A major leaugue baseball player hits a ball 3 feet above the ground with a velocity of 103 feet per second in the direction of a 10 foot wall that is 300 feet from home plate. If the hit is at an angle of elevation of 34 degrees and there is wind blowing

    asked by Chris
  81. maths

    Find the area of the minor segment in a circle with radius 6.2 cm and subtending an angle of 135 degrees at the centre.

    asked by Lisha
  82. spanish 1

    gaston subio a los autitos chocadores pero primero __________

    asked by Anonymous
  83. physics

    thus far in the course we have ignored that on the earths surface an object must have a slightly unbalanced force to rotate with the earth, pretending that the normal force precisely balances the objects weight. A student with a mass of 65.0kg stands at

    asked by marie
  84. Social Studies

    Which of the following contributed to Britain's Industrial Revolution? A. Large Labor force C. powerful monarchy B. Decreasing food supplies D. decreasing money supply. The textile industry met its last major challenge to full mechanization with the

    asked by Erin
  85. Health

    Which fats are considered the "essential fatty acids"? A. saturated fats B. unsaturated fats C. trans fatty acids D. All the above I think it is B or D...? I know A and C are bad for you but they are necessary.

    asked by Cassie
  86. math

    A major leaugue baseball player hits a ball 3 feet above the ground with a velocity of 103 feet per second in the direction of a 10 foot wall that is 300 feet from home plate. If the hit is at an angle of elevation of 34 degrees and there is wind blowing

    asked by Chris
  87. Life oriantation

    what are the 5ways in which HIV and AIDS impacts in human and communities?

    asked by portia Thandeka MAhlobo
  88. physics

    A person takes a trip, driving with a constant speed of 92.5 km/h except for a 20.0 min rest stop. If the person's average speed is 71.2 km/h, how much time is spent on the trip and how far does the person travel?

    asked by bob
  89. Literacy

    Who publishes Pediatric Nursing

    asked by Princess
  90. science

    A 27 kg gun is standing on a frictionless sur- face. The gun fires a 56 g bullet with a muzzle velocity of 314 m/s. The positive direction is that of the bullet. Calculate the momentum of the bullet im- mediately after the gun was fired. Answer in units of

    asked by Anonymous
  91. math

    If a mail man could deliver to 112 homes on foot and to 168 homes by driving what percent productivity increase by driving

    asked by pollu
  92. PHYSICS/CHEMISTRY

    Can someone explain to me, what does Metastable isotope means? I already read the definitions on the internet but I really don't understand it. Thanks in advance.

    asked by LG
  93. math help

    How do I write this in inequality? The value of r is at most 10 and would it be an open or closed on the number line? I think open?

    asked by Moby
  94. History

    1. What major problem did the Roman Empire face in the mid to late Fourth Century? A. Weak leadership B. Immigration and invasion C. Lack of education within the empire D. Poor infrastructure 2. A staple food transplanted from Southeast Asia to the

    asked by Becka
  95. Probablity

    Samir had prepared the problem tests for Stages 1 to 5 of Geometry and Combinatorics for next week but forgot to label which test was for which stage. Since Samir didn't label them, the computer assigned them labels 1 through 5 randomly, with each label

    asked by Mathslover
  96. calculus

    The marginal cost for a product is given by dC/dq = 1000/sqrt3q+20, in hundreds of dollars, where q is given in thousands of units. Determine the cost in dollars involved in increasing product from 10 to 15 thousand units. If R(0)= C(0)= 0, the marginal

    asked by Grant
  97. mathematics

    Find the largest number of real numbers x1,...,xn such that for all i≠j, |xi−xj|>1/100(1+xi xj).

    asked by Nilesh P.
  98. spanish 1

    gaston subio a los autitos chocadores pero primero __________ Tabien en el zoologico

    asked by Anonymous
  99. science

    A 27 kg gun is standing on a frictionless sur- face. The gun fires a 56 g bullet with a muzzle velocity of 314 m/s. The positive direction is that of the bullet. Calculate the momentum of the bullet im- mediately after the gun was fired. Answer in units of

    asked by Anonymous
  100. science

    A 27 kg gun is standing on a frictionless sur- face. The gun fires a 56 g bullet with a muzzle velocity of 314 m/s. The positive direction is that of the bullet. Calculate the momentum of the bullet im- mediately after the gun was fired. Answer in units of

    asked by Anonymous
  101. Math

    on Monday the temperature was -2 degrees. By 4:30 Tuesday the temperature dropped by 4 degrees. By 8am Tuesday, the temperature was 1 degree. therefore find: What was the temperature at 4:30am? What the temperature change between 4:30am and 8am?

    asked by Anonymous
  102. Quantitative Analysis for Business

    The ages of a group of 50 women are approximately normally distributed with a mean of 48 years and a standard deviation of 5 years. One women is randomly selected from the group, and her age is observed. A) Find the probability that her age will fall

    asked by Silvia
  103. algebra

    Need help with 3 problems on page 167 X+2y=6 5x+3y=2 4x-3y=-20 -x-8y=5 5x+6y=-11 3x+y=-4

    asked by dee
  104. Math

    The sum of two numbers is twice their difference. The larger number is 6 more than twice the smaller. Find the two numbers.

    asked by Scarlett
  105. physics

    What is the magnitude of the electrostatic force on a +5 C harge 1.75 m to the left of a -2.5 C Charge? (show your work)

    asked by Mandy
  106. math

    tom bought 3 pieces of bubble gum for 12 cents total, if tom paid with a quarter how much change was left after the purchase

    asked by joy
  107. Informations

    What does Current GPA mean? What does Cumulative GPA?

    asked by Celest
  108. science

    In one location pesticides called pyrethoids were used to control winter moths and leaf miners in apple orchards. Unfortunately, the chemicals killed more insects than intended, including predators of red mites and apple mites. After orchards were sprayed

    asked by sexy laday
  109. criminal law

    If most youth gangs are racially and ethnically homogenous, should law enforcement use race- and ethnic-specific strategies to fight gang formation and to control gang crime?

    asked by Mary58
  110. geometry

    a rectangular flower garden is surrounded by a grass border, the grass border is 5 meters wide on all sides of the flower garden and the outer dimensions are 50 meters by 40 meters. What is the area of the grass border?

    asked by Herman
  111. math alggggggggebra

    Find the largest number of real numbers x1,...,xn such that for all i≠j, |xi−xj|>1/100(1+xixj).

    asked by joydeep3
  112. Social Studies

    How did Carnegie's company break the union at the Homestead mills? My answer: It broke the union after the company responded to the union's refusal to accept reduced wages by locking out union workers from the mill and announcing that it would hire

    asked by Anonymous
  113. mechanics

    Find the total kinetic energy of a 1500 g wheel, 700 mm in diameter, rolling across a level surface at 650 rpm. Assume that the wheel can be considered as a hoop. (b) For the wheel in part (a), calculate the torque required to decrease its rotational speed

    asked by george
  114. phycis

    A 12 g bullet is stopped in a block of wood (mw = 5.9 kg). The speed of the bullet- plus-wood combination immediately after the collision is 0.95 m/s. What was the original speed of the bullet? Answer in units of m/s

    asked by Anonymous
  115. algebra

    The wheel in a bicycle has a diameter of 2 feet. if the wheel is turning at 50 rpm (revolutions per minute), how far, in feet, will the bicycle travel in 20 minutes?

    asked by Aimie
  116. physics

    Two point charges +q=1 μC and −q=−1 μC with mass m=1 g are fixed at the positions ±r ⃗ 0 with |r 0|=1 m. The charges are released from rest at t=0. Find the time τ in seconds at which they collide.

    asked by Anonymous
  117. physics

    A ray of light in a tank of water has an angle of incidence of 23°. What is the angle of refraction in air? (Enter 0 if total internal reflection occurs.)

    asked by A
  118. physics

    A convex lens is needed to produce an image that is 0.70 times the size of the object and located 28 cm from the lens on the other side. What focal length should be specified?

    asked by A
  119. physics

    Camera lenses are described in terms of their focal length. A 50.0 mm lens has a focal length of 50.0 mm. (a) A camera with a 50 mm lens is focused on an object 4.0 m away. Locate the image. (b) A 980 mm lens is focused on an object 125 m away. Locate the

    asked by A
  120. Justice system

    The organization of policing has both bureaucratic and __________ characteristics. A. chaotic B. civilian C. military D. corporate im confused between B n C 2. “Strategic leniency” in police management refers to: A. police discretionary behavior during

    asked by Amy
  121. Math

    A wheel on Greg's bicycle is 0.3 m in diameter. Greg races the bicycle for 31 m. How many times does the wheel turn as the bicycle travels this distance?

    asked by James
  122. Programming Logic

    How do I write case logic pseudocode and visual logic nested if-then-else flow charts for atm check balances, making remote photo capture check deposits, and perform balance transfers?

    asked by Ryan
  123. math

    A major leaugue baseball player hits a ball 3 feet above the ground with a velocity of 103 feet per secon in the direction of a 10 foot wall that is 300 feet from home plate. If the hit is at an angle of elevation of 34 degrees and there is wind blowing 22

    asked by Chris
  124. algebra

    A women has a ladder that is 13 feet long.if she sets the base of the ladder on level ground 5 feet from the side of a house,how many feet above the ground will the top of the ladder be when it rests against the house?

    asked by kirandeep
  125. Calculus

    An object is traveling along the x axis so that its speed is given by 2 v(t) t 7t 10 m/s. (a) Find the times when the object is at rest.

    asked by Michael
  126. Calculus

    An object is traveling along the x axis so that its speed is given by v(t)=t^2-7t+10 m/s. (a) Find the times when the object is at rest. (b) Find the acceleration at both of these times. Interpret the acceleration in terms of the motion of the object, ie

    asked by Elliott
  127. Riemann Sums

    Use the Riemann Sums corresponding to 5 inscribed rectangles of equal width to approximate the integral a= 1, b= 3, (1/x)dx this is all for definite integral i just know x1=1.4, x2=1.8, x3=2.2, x4=2.6, x5=3.0 how do i continue

    asked by Eric
  128. Physics to Elena

    At the upper surface of the earth's atmosphere, the time-averaged magnitude of the Poynting vector is referred to as the solar constant and is given by =1.35×103W⋅m−2 . (a) If you assume that the sun's electromagnetic radiation is a plane sinusoidal

    asked by Rohan
  129. Physics

    A point charge of charge 1 mC and mass 100 g is attached to a non-conducting massless rod of length 10 cm. The other end of the rod is attached to a two-dimensional sheet with uniform charge density σ and the rod is free to rotate. The sheet is parallel

    asked by Nilesh P.
  130. Calculus

    Fuel is flowing into a storage tank which can be filled to a depth of 6 metres. When the fuel started flowing the tank was already filled to a depth of 2.5m. If the rate at which the depth of fuel in the tank is increasing, in metres per hour is given by

    asked by Grant
  131. Writing for Success

    Review chapter 12, section 2 of Writing for Success. What is the most important concept you learned

    asked by Debra
  132. life orientation

    in 10-15 lines critically discuss 5 ways in which substance abuse impacts on the community.

    asked by lerato
  133. HEEEELP MATHS

    Let f(x) be a polynomial such that f(f(x))−x^2=xf(x). Find f(−100).

    asked by Anubhav
  134. math

    the surface area of a prism with base 25mm by 35 mm and the height at 50 mm

    asked by Tina
  135. Geometry

    one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product

    asked by ji
  136. 7th grade math

    How does functions in math relate to what you put into it is what you get out of it? Can you explain for me? i'm thinking it doesn't really? one example if you can like in sports or goverment? Don't know.

    asked by Tina
  137. science, psychology

    Exhibit a behaviour that you do every day that you think is influenced by heredity and environment. Describe how three of the seven modern perspectives/approaches of psychology would be used to explain your behavior. Make sure that your discussion is not

    asked by paul
  138. math

    How do I set up the quadratic equation for this problem? 4.0= (2x)^2 / (1.0-x)(1.0-x) I know how to use the formula, but I have a hard time setting those equation to zero. Please explain step by step. Thank you

    asked by Amalia
  139. science

    You plan to generate many copies of this gene by PCR. You will then insert the PCR product into the plasmid. d) Which two primers from the list below will allow you to use PCR to amplify this gene? Check the two that apply. 5'-GTGCA-3' 5'-CACGT-3'

    asked by Anonymous
  140. math

    You deposit $1200 in an account that pays an APR of 7% compounded monthly. How long will it take for your balance to reach $150,000?

    asked by emma
  141. Sigmund freud

    Provide detailed descriptions of individuals based on careful observation or formal psychological testing sigmund freud is famous for

    asked by Anonymous
  142. physics

    A 12 g bullet is stopped in a block of wood (mw = 5.9 kg). The speed of the bullet- plus-wood combination immediately after the collision is 0.95 m/s. What was the original speed of the bullet? Answer in units of m/s

    asked by Anonymous
  143. Social Studies

    The spread of the factory system resulted in: A. an increase in home production B. increased exports of British cotton good C. poorer quality of iron D. improved working conditions in factories. The industrial Revolution created new jobs in all of the

    asked by Erin
  144. math

    The probability that a positive divisor of 60 is greater than 9 can be written as a/b, where a and b are coprime positive integers. What is the value of a+b?

    asked by jamesbond
  145. math helllllllllllpppp plzzzzzzzzzzzzzzzzzzzzzzz

    What are the last 2 digits of 43^2082?

    asked by jamesbond
  146. language arts

    1. Which of the following would be the least appropriate topic when drafting a piece of descriptive writing? (1 point) a report on the condition of women workers in Afghanistan an instruction manual for a microwave oven a call to action to clean up a

    asked by Delilah
  147. Science

    what kind of energy is stored before the earthquake

    asked by Anonymous
  148. life orientation

    6 ways in which earthquake can impact negatively on one's health

    asked by grace
  149. Reiny or Steve could you check my Math?

    1. (9m+6)+(-5m-6) my answer: 4m 2. (3r^2+7r+1)+(4r^2-8r-2) my answer: 7r^2-r-1 3. (6h-1)-(9h+4) my answer: -3h-3 4. (m^2-m-4)+(m-5) my answer: m^2-9 5. (4x+4)+(3x+2+1) my answer: 7x+7 Now this was book work for me so it doesn't have multiple choice, so are

    asked by Gabby
  150. government

    which provides evidence that political parties are not as strong as they once were? A. the increasing number of independents B. the lack of straight-ticket voting C. increased spending on campaigns D. increased numbers of registered Democrats

    asked by Megan
  151. Science (bobpursley)

    Why is an extra day added to February every four years?

    asked by Anonymous
  152. Chemistry

    Is Cl2 + 2e- -> 2Cl- an oxidation half-reaction?

    asked by Anonymous
  153. Chemistry

    Is Cl2 + 2e- -> 2Cl- an oxidation half-reaction?

    asked by Anonymous
  154. government

    to be president of the united states a person must have lived in the united states for at least this number of years

    asked by Anonymous
  155. math

    1. change to improper fraction: 9 5/9 2. change to improper fraction: 6 23/39 3. change the improper fraction to a whole number:115/20 4. multiply 4 3/4 x 1 1/7 5,subtract- 20 11/15- 17 1/3 6 2(-6)(-8)(0)(-5): multiply 7. solve for the variable: 0.1p=7

    asked by John
  156. Justice system

    Detectives more typically focus their energies on homicide and rape cases, as opposed to burglary and robbery cases, because: A. there is political pressure to do so. B. the victims can more often provide clues that make the cases easier to solve. C.

    asked by Amy
  157. HISTORY

    Was imperialism necessary in the 19th century?

    asked by Ella
  158. Calculus

    Describe the surface and give traces: x = y^2 - 4z^2

    asked by Liz
  159. Life oriantation

    what are the recommendations on how to address HIV and AIDS?

    asked by portia Thandeka MAhlobo
  160. Economics

    I am having problems answering the question below can you please help? With probability p, you will catch a disease that reduces your income from y, its level when you are healthy, to y-k, where k > 0. A vaccine is available, at cost c, that reduces the

    asked by Emma
  161. Economics

    According to the following game tree, and if the entrant and incumbent both only care about their own monetary payoff, what is/are the game's Nash equilibrium? Entrant - stays out (2,15) - enters If the entrant enters, Incumbent - co operates (5,5) -

    asked by Candice
  162. Physics to Elena

    Ex=0 ; Ez=0 Ey = 10   sin(3.14x - 6.08e8 t) what is the time-averaged Poynting vector (magnitude and direction) for the position x=y=z=−3 ?

    asked by Rohan
  163. Maths

    For a set of numbers T, we say that T has distinct subset sums if all distinct subsets of T have distinct sums. How many subsets of {1,2,3,4,5,6,7,8} have distinct subset sums? Details and assumptions The empty set (the set of no elements) has sum 0 by

    asked by Mathslover
  164. math please helppppppp

    For a set of numbers T, we say that T has distinct subset sums if all distinct subsets of T have distinct sums. How many subsets of {1,2,3,4,5,6,7,8} have distinct subset sums? Details and assumptions The empty set (the set of no elements) has sum 0 by

    asked by Mathslover
  165. Math

    Let S be the set of {(1,1),(1,−1),(−1,1)}-lattice path which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Determine the largest value of n such that every path in S which ends at (n,n) has length at

    asked by Sambaran G.
  166. health

    ten ways in which floods can cause negative impact on ones health

    asked by Anonymous
  167. Social Studies

    How did Carnegie's company break the union at the Homestead mills?

    asked by Anonymous
  168. Physics

    SD TRUSS PROBLEM WITH THE METHOD OF JOINTS The truss structure ABCD is loaded with a concentrated force P = 2 kN applied at a 45° angle at joint D as indicated in the figure. All bars in the truss have equal cross sectional area and are made of the same

    asked by helpless
  169. math

    write the algebraic equation for "after 7 is added to a number, the sum is divided by 4 and the result is 12"

    asked by ji
  170. Social Studies

    How was the South so much industrial than the North?

    asked by Anonymous
  171. math

    Rewrite this expression using the distributive property. 4 x (8 + m)

    asked by Anonymous
  172. MATH

    For what integer 0

    asked by intermediate player PLEASE HELP
  173. MATH

    1. Add or Subtract. (4x^2+15x-3)-(-3x^2+5)

    asked by Gabby
  174. helllllp MATHS

    x and y are positive values satisfying x+y=1/4 . When ln(y^2+4xy+7) attains its maximum(subject to the given constraint), what is the value of 1/xy ?

    asked by Anubhav
  175. math

    one-half of a number is 8 less than two-thirds of the number. write algebraic equation: the sum of x and 8 is 15 write algebraic equation: 4 more than x is 9 write algebraic equation: 5 less than twice x is equal to 35 write algebraic equation: the product

    asked by ji
  176. physical science

    If the mass of a plane is 2,500 kg and the net force on it is 14,000 N, what is the plane's acceleration?

    asked by Annabeth
  177. math

    in 2010 i had 36 plums and in 2013 i now have 25 plums, what is the percentage of plums i have cut back on

    asked by sue
  178. biology

    4.3kj of heat energy stands for how many burgers ?

    asked by Anonymous
  179. English

    9. In which sentence is the word but used as a preposition? A. We would like to visit the Grand Canyon, but our vacation time is up. B. John liked baseball but not football. C. Children should be seen but not heard. D. None but the brave shall enter in. I

    asked by NANA
  180. College algebra

    Use the rational zeros theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers f(x)=9x^4+28x^3+66x^2+196x+21 Find the real zeros of f Use the real zeros to factor f f(x)=

    asked by Alex
  181. math

    What is the portion if the base is 900 and the rate is 12 3/4?

    asked by lex
  182. Life orientation

    Impact of lifestyle disease on the teenagers

    asked by Sandile
  183. English

    What will happen in the future? We will fly to the USA in an hour. We will visit Mars. We will go to the moon with our family. We will travel to many planets without paying a lot of money. We will live on Jupitor. We will live on another planet. We will

    asked by rfvv
  184. Writing

    Advantages and Disadvantages of School Lunches “Never doubt that a small group of thoughtful committed citizens can change the world; indeed, it's the only thing that ever has.” Margaret Mead once said this, which means that we as Americans need to

    asked by Monae
  185. Functions - Math - 8

    x: 2 | 4 | 6 y: 1 | 0 | -1 Please show me how to find the rule, thanks. such as... y= *equation*

    asked by L0vely
  186. math alggggggggggggebra

    Find the largest possible integer n such that there exists a non-constant quadratic polynomial f(x) with integer coefficients satisfying f(1)∣f(2),f(2)∣f(3),…f(n−1)∣f(n).

    asked by joydeep2
  187. question

    You could not----- the enemy destroyer in the foy 1,maroon 2,circumvent 3,overlook 4,discern 5,reveal

    asked by joy
  188. chemistry

    If 15 grams of table salt is used how many moles of sodium sulfate are produced

    asked by shelby
  189. Perform the indicated operation and simplify

    X^2-2x-15/x^2+x-12*2x^2-6x/x^3+3x^2

    asked by Jody
  190. genetics

    Once the _______ checkpoint is passed in the cell cycles, the cell is committed to division

    asked by Anonymous
  191. science

    The nonliving matrix of the connective tissue through which the blood cells freely flow is the? A.plasma. B. extracellular fluid. C. intracellular fluid. D. submucosa.

    asked by Linda
  192. Physics

    The truss structure ABCD is loaded with a concentrated force P = 2 kN applied at a 45° angle at joint D as indicated in the figure. All bars in the truss have equal cross sectional area and are made of the same homogeneous linear elastic material. The

    asked by simonsay
  193. math

    -10i(5+8i)

    asked by amanda
  194. 7th grade math

    Horses, pigs and cows is really easy I can do it in my head but, my teacher told me I would have to start showing my work. I really have no clue how to do that I have always done it in my head. Can you pretty please help me I would gladly appreciate it.

    asked by Abby
  195. life orientation

    5 ways in which the air pollution problem on the community.

    asked by molatelo
  196. enlish literture

    narnia the lion the the witch and the wabode two literary devives were used in chapter 10 repetition and smiple identify the line that features these device

    asked by Nick
  197. 4th grade math

    Hi! This question says Joe is thinking of o function machine.He says that the output is 12 if the input is 4.what are 2 rules that he could be thinking of for his function machine?( I would really be grateful if you helped me) ;)thanks

    asked by Lexie
  198. Math

    A bullet reaches a speed of 900 ft per sec in .2 sec. What is its acceleration.

    asked by Kory
  199. Governmnet

    which of the mass media has the most impact on american politics? A. television B. the internet

    asked by Megan
  200. math

    what is the percent in the form specified of 48%ratio,1%decimal,99%fraction

    asked by joge
  201. math

    0.2(x+30)-0.03(x-40)=17.4

    asked by mike
  202. Math

    What is 4963rounded to the nearest hundred?

    asked by Johnny
  203. Justice system

    1. Customs and Border Protection (CBP) is part of the: A. Department of Homeland Security. B. Bureau of Dangerous Drugs. C. Drug Enforcement Administration (DEA). D. U.S. Marshals Service. is it A 2. The most visible private police agency during

    asked by Amy
  204. Science space

    I am doing a project on the planet uranus and I need a map showiong the path to my planet that i have chosen. The picture of the path must include asteroids, comets or other interesting objects. I am having so much trouble looking for such a picture. I

    asked by Alexander
  205. Math

    How do you add fractions??

    asked by Maddie
  206. College Algebra! help!

    Consider the following functions f(x)= (7x+8)/(x+3) and g(x)= (3x-8)/(7-x) (a) Find g(g(x)) (b) Find g(f(x)) (c) Determine whether the functions f and g are inverses of each other.

    asked by Rosie
  207. analytical

    I have 5ml of 0.07 mol/l Hcl I want to increase the molarity to 1 mol/l by adding minimum volume of hcl 31.2% density 1.15 kg/l how much I have to add

    asked by nebal
  208. Chemistry

    How Many molecules Of sodium are contained in 2 L Of sodium dichromate? The density Of sodium dichromate is 3.7 g/ml

    asked by Carolina
  209. Science 1 question SPACE

    I re-posted this question because noone helped and I need help fast! I am doing a project on the planet uranus and I need a map showiong the path to my planet that i have chosen. The picture of the path must include asteroids, comets or other interesting

    asked by Alexander
  210. science

    First find the impedance of each circuit. then find the voltage across: current through and power dissipate by each resistor. Construct a data table to organize your answers

    asked by D.C
  211. MATH

    JOhn had prepared the problem sets for Levels 1 to 5 of Geometry and Combinatorics for next month but forgot to label which set was for which level. Since Calvin didn't label them, the computer assigned them labels 1 through 5 randomly, with each label

    asked by intermediate player PLEASE HELP
  212. Written Communication

    You can feed a(n) A. pachyderm. B. gauche. C. ocular. D. hypodermic.

    asked by Anonymous
  213. life orientation

    5 ways in which the human or environmental problem impacts on the community

    asked by khanyisile Simamane
  214. Maths

    Two angles of triangle are pie/6 and 2pie/3 radians. What is the measure of the third angle in degrees?

    asked by Lisha
  215. Physics to Elena

    An optical fiber is a flexible, transparent fiber devised to transmit light between the two ends of the fiber. Complete transmission of light is achieved through total internal reflection. This problem aims to calculate the minimum index of refraction n of

    asked by Rohan
  216. math

    How many positive integers n are there such that 10^n≤n^10?

    asked by Nilesh P.
  217. Math pleaaaase help

    A national math contest consisted of 11 multiple choice questions, each having 11 possible answers. Suppose that 111 students actually wrote the exam, and no two students has more than one answer in common. The highest possible average mark for the

    asked by Mathslover
  218. Geometry please help

    Ravi wants to trisect an angle AOB, which has measure θ. From A, he drops a perpendicular to side OB, intersecting at C. He then constructs an equilateral triangle ACD on the opposite side of AC as compared to O. He claims (without any justification) that

    asked by Mathslover
  219. math

    Rewrite this expression using the distributive property. 4 x (8 + m)

    asked by Anonymous
  220. math

    how to get the 5^2=13^2

    asked by kirandeep
  221. Bio

    a) Make a single base pair substitution mutation in the gene below that results in a mature mRNA that is shorter than the mature mRNA produced by the original gene. When you are satisfied with your change and its effect, click the "Final Check" button.

    asked by Amos Amines
  222. Maths

    Find the area of the sectors in a circle of radius 10cm where the angles at the centre are; 60 degrees

    asked by Lisha
  223. philosophy

    Both Nietzche and Wittgenstein raise the issue of the morality of morality. In other words, they ask "Why should someone be good?" Describe the different ways in which Wittgenstein and Nietzsche understand the human moral predicament i.e. the challenge of

    asked by S
  224. Philosophy HEELLLPPP!!

    Simone de Beauvoir warns against “ethical recipes,” suggesting instead that life and ethics are both inherently ambiguous. Choose one of the ethical “recipes” or “methods” offered by Manning, Kant, Mill. What ambiguities remain even after the

    asked by Mary
  225. Social studies

    What islands did Columbus call the Indies?

    asked by Kelley
  226. trigonometry

    tanx/2=tanx/secx+1

    asked by lisa
  227. 2 math

    write algebraic equation for -36 equals q increased by 9.

    asked by ji
  228. French Is this translate correctly

    Is this translated correctly? When we went camping, Dad and I forgot to pack sleeping bags for my mom and sister. They were furious. I slept well that night. The next day, Dad and I were about to hike, when we noticed mom and my sister drank all of the

    asked by Bryce
  229. accounting

    Test question: On July 31, 2012, Buddy’s Bathtub Renovations Inc. invested $98,000 in U.S. Treasury bills. The bills mature in 120 days at $100,000. Prepare a journal entry

    asked by Anonymous
  230. english

    You could not----- the enemy destroyer in the foy 1,maroon 2,circumvent 3,overlook 4,discern 5,reveal

    asked by joy
  231. english

    the managers decision was not based on a consideration of fairness it was simply a case ----- 1 expediency 2 importance 4 trial 5 judgment 6 corruption

    asked by joy
  232. math

    What is 4 x (8 + m)?

    asked by Anonymous