Questions Asked on
October 24, 2012

  1. Physics

    A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor? 0.73 Tesla 6.60 Tesla 0.34 Tesla 0.61 Tesla

    asked by Anonymous
  2. MEC

    two charges repel each other with a force of 0.1N when they are 5cm apart. Find the forces between the same charges when they are 2cm and 8cm apart.

    asked by ann
  3. statistics!

    1) Entry to a certain University is determined by a national test. The scores on this test are normally distributed with a mean of 500 and a standard deviation of 100. Tom wants to be admitted to this university and he knows that he must score better than

    asked by joane
  4. statistics

    A university wants to estimate the average distance that commuter students travel to get to class with an error of ±3 miles and 90 percent confidence. What sample size would be needed, assuming that distances are normally distributed with a range of X = 0

    asked by Anonymous
  5. Physics

    What happens to the atomic number of the daughter nucleus if it is formed after the emission of the beta particle? The atomic number remains the same. The atomic number increases by two. The atomic number increases by one. The atomic number decreases by

    asked by wtewt
  6. Macroeconomics

    Cannot attach graph! a. If the actual price level exceeds the expected price level reflected in long-term contracts, real GDP equals _______ and the actual price level equals _______ in the short run. b. The situation described in part (a) results in a(n)

    asked by Amanda
  7. chemistry

    A scientist measures the standard enthalpy change for the following reaction to be -2923.0 kJ : 2C2H6(g) + 7 O2(g) 4CO2(g) + 6 H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation

    asked by Anonymous
  8. Chemistry

    #25 The Ksp of nickel(II) hydroxide, Ni(OH)2, is 5.84 × 10-16. Calculate the molar solubility of this compound.

    asked by Mari Micci
  9. Physics

    A metallic surface emits electrons when it is irradiated with a yellow light source of power 25 Watts. What happens to the emission of the electrons if one yellow light source is replaced by two violet light sources of same power? The number of emission of

    asked by Meep
  10. Physics

    The maximum force a grocery sack can withstand and not rip is 250 N. Calculate the greatest acceleration 20 kg of groceries can be lifted from the floor to the table such that the sack does not break.

    asked by Sammy
  11. science

    How tall is the tree if the sun is at a 53° angle above the horizon and the shadow is 8.0 meters long?

    asked by John
  12. Math

    A box of chalk and 2 staples cost $10. Three box of chalk and 2 staplers cost $18. Find the total cost of 1 box of chalk and 1 stapler.

    asked by Anonymous
  13. chemistry

    A sample of orange juice has a pH of 3.44. Its [H3O+] is

    asked by Anonymous
  14. Math

    An eastbound train and a westbound train meet each other on parallel tracks heading in opposite directions. The eastbound train travels 12 miles per hour faster than the westbound train. After 1.5 hours, they are 174 miles apart. At what speeds are the two

    asked by awade
  15. Physics

    A photocell shows photoelectric effect when green light shines on it. Which of the following is correct if a green light is replaced by a blue light? Electron emission would get stopped. Electrons are emitted with more velocity. Electrons are emitted with

    asked by Tyler
  16. 7th grade math help Ms.Sue please ASAP

    1. If a number is not a rational number, then it is _____. (1 point) an integer an irrational number a whole number a radical 2. A picture frame is 12 inches long and 9 inches wide. In inches, what is the diagonal length of the picture frame? (1 point) 21

    asked by Delilah
  17. Chemistry

    In the experiment 0.500 g of copper reacted with oxygen to give 0.563 g of copper oxide. What is the empirical formula of the oxide expressed as a chemical formula?

    asked by Brenda
  18. Finance

    Your friend claims that he invested $5,000 seven years ago and that this investment is worth $38,700 today. For this to be true, what annual rate of return did he have to earn? Assume the interest compounds annually.

    asked by Arielle
  19. Algrbra

    A certain paperback sells for $12. The author is paid royalties of 11% on the first 10,000 copies sold, 12.5% on the next 5000 copies, and 18% on any additional copies. Find a piecewise-defined function R that specifies the total royalties if x copies are

    asked by Pete
  20. Math

    ilorin is at 8.5 degree to the north,4.6 degree to the east and free town at 8.5degree to the north,13.3degree to the west calculate(a)their distance apart,measured along the parallel of latitude(b)their distance from the equqtor(c)their speed in km/h due

    asked by flexy
  21. Algebra 1

    A girl scout troop sold cookies. If the girls sold 5 more boxes the second week than they did the first, and if they doubled the sales of the second week for the third week to sell a total of 431 boxes of cookies, how many did they sell each week?

    asked by Monica
  22. Government

    Pluralists believe that the dominant player in American politics is (1 point) the president. groups. the government. rich individuals. the media. All of the following are generally more true of Americans than Europeans EXCEPT (1 point) they volunteer more

    asked by Anne
  23. math

    Find the area of a walkway that goes around a rectangular swimming pool. The pool has a length of 30 feet and a width of 18 feet. The walkway has a width of 4 feet all around the pool.

    asked by Josh
  24. physics

    If the CD rotates clockwise (let's take clockwise rotation as positive) at 500 (revolutions per minute) while the last song is playing, and then spins down to zero angular speed in 2.60 with constant angular acceleration, what is , the angular acceleration

    asked by Anonymous
  25. 7th grade math Ms. Sue ASAP please

    Ms. Sue, sorry to keep bugging you with questions, but can you please check my answers? Sorry, I just want to get my answers correct when i turn it in thanks! 8. Four students work to find an estimate for square root 37. Who is closest to finding the true

    asked by Delilah
  26. Science

    Fill in the blanks 1. Minerals are classified in many ways, including hardness, streak, and ______ properties. 2. There are some minerals that are valued as _______ because of their hardness, color, and beauty. 3. Non-silicates make up less than 10% of

    asked by Unknown
  27. math

    Which Statements of congruence are true and which are false and why? 177 _= 17 (mod 8) 871 _= 713 (mod 29) 1322 _= 5294 (mod 12) 5141 _= 8353 (mod 11) 13944 _= 8919 (mod 13) 67 x 73 _= 1 x 3 (mod 5) 17 x 18 x 19 x 20 _= 4! (mod 8) 83 (144 power) _= 15 (144

    asked by Jimmy
  28. Statistics

    A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 460 seconds and a standard deviation of 40 seconds.

    asked by Daniela
  29. accounting

    The following information is available for ABC Company for the year ended December 31, 1997: Ending Inventory …………………………. $7,500 Purchases …………………………………. 31,000 Transportation-in ………………………….

    asked by yo
  30. Algebra 1

    The larger of two consecutive integers is 7 greater than twice the smaller. Find the integers. A) 4,5 B) -8,-9 C) -5,-6

    asked by Monica
  31. Math

    There are 10 tennis balls, 2 soccer balls, and 8 basketballs. What fraction in simplest form are tennis balls?

    asked by Jennifer
  32. math

    c ezicol 2 thi r ;r

    asked by zubair
  33. English

    1. He lied me that you were a fine gardener. 2. He lied that you were a fine gardener. 3. He lied to me that you were a fine gardener. 4. He lied. 5. He lied you were a fine gardener. (Are they all grammatical? Which ones are wrong grammatically?)

    asked by rfvv
  34. Math

    How long will it take a car traveling 65 mph to pass a car traveling 45 mph if the slower car had a 2 hour lead?

    asked by Maria
  35. math

    how to solve identity property,2nd grade

    asked by tyler
  36. physics college

    A dog sled is pulled at an angle of 30 degrees with the horizon using a tension of 450N. If the sled has a mass of 50kg, then find the recoil, forward force and acceleration (if any).

    asked by Gee
  37. Math

    (a) Find the number c such that the limit below exists. Limit as x goes to -2 of: x^2+cx=c-3/x^2+2x (b) Calculate the limit for the value of c in part (a).

    asked by Andrew
  38. Physics

    Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of 136 kg. Under the

    asked by jim
  39. physics

    State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS

    asked by Anyone know the answer to this?
  40. pre-cal

    aj uses a lingshot to launch a rock straight up from the a point of 6 ft. above ground level with an initial velocity of 170 ft per second. A) find an equation that models the height of the rock t seconds after it is launched. b) what is the maximum height

    asked by jhon avendano
  41. chemistry

    MgO + HNO3 =

    asked by bhanuka
  42. Physics

    A heavy freight train has a mass of 13200 metric tons. If the locomotive can pull with a force of 755000N, how long does it take to increase it's speed from 0 to 95.5 km/h?

    asked by joane
  43. 7th grade math Ms. Sue please

    2. Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a block? (1 point) 1 foot 2 feet 3 feet 4 feet 3. Which of these numbers can be classified as

    asked by Delilah
  44. Computers

    I know that there are a whole bunch of proxy servers out there but I can't seem to find one that will help me get around the system. I am wanting to use this proxy address to help me access school resource websites, but they're all blocked. HELP!!!! Please

    asked by Anonymous
  45. algebra 1

    Natalie performs a chemistry experiment where she records the tenperture of an ongoing reaction.The solution is 93.5 C after 3 minutes;90 C after 5 minutes,84.8 C after 9 minutes; 70.2 C after 18 minute; 54.4 C after 30 minutes;42.5 C after 37 minutes; and

    asked by Janet
  46. physics/light reflection

    A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal at the same angle as the angle of incidence. Find: a.the angle between the light

    asked by Help please
  47. AP Physics

    To test the performance of its tires, a car travels along a perfectly flat (no banking) circular track of radius 120 m. The car increases its speed at uniform rate of at ≡ d |v| dt = 2.99 m/s 2 until the tires start to skid. If the tires start to skid

    asked by Noah
  48. Physics

    A 69 kg swimmer free-falls off a 10.0 m diving platform. The diver comes to a stop 2.7 m below the water's surface. What is the magnitude of the force exerted by the water on the swimmer. (assume a positive direction is up) I calculated the force on the

    asked by Becca
  49. texas southern university

    A periodic wave has a frequency of 8.9 Hz. What is the wave period? ??__s

    asked by angela
  50. texas southern university

    A quantity of gas in a piston cylinder has a volume of 0.544 m3 and a pressure of 200 Pa. The piston compresses the gas to 0.126 m3 in an isothermal (constant-temperature) process. What is the final pressure of the gas? ??__Pa

    asked by angela
  51. business

    Is bluntbomb corporation. Good. Investment

    asked by head
  52. math

    9/20 how do I multiply & simplity

    asked by keith
  53. physics

    State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS

    asked by Anonymous
  54. math

    how do i calculate these ratios 5,474 to 1,850 but the total is 7,324 do i need to do anything with the total or is it right??????

    asked by maria
  55. Chemistry

    #26 The Ksp of lead(II) carbonate, PbCO3, is 7.40 × 10-14. Calculate the solubility of this compound in g/L.

    asked by Mari Micci
  56. Chemistry

    #24 At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0660 g/L. What is the Ksp of this salt at this temperature?

    asked by Mari Micci
  57. algebra

    The stock of Company A is valued at $18.20 per share. The company's earnings for one year amounted to $2.80 per share. If Company earned $3,360,000 in that year, what was the total value of its stock?

    asked by kate
  58. Chemistry

    a certain first order decomposition reaction has a half-life of 15.0 minutes. What is the rate constant for this reaction? what is the time it will take for the reaction to reach the 10% completion point?

    asked by Josh
  59. Physics

    I need a step by step visual of how to do this question: A uniform horizontal beam 5.00m long and weighing 3.00x10^2 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

    asked by CM
  60. chemistry

    Suppose that 0.450 of methane,CH4(g) , is reacted with 0.600 of fluorine, F2(g), forming CF(g) and HF(G) as sole products. Assuming that the reaction occurs at constant pressure, how much heat is released?

    asked by ricardo
  61. math

    triangle ABC, with vertices A(2,3), B(4,-4), C(6,8), is reflected across the x-axis to form a triangle A'B'C'. Give the new coordinates for triangle A'B'C'.

    asked by ashley
  62. English

    1. What do you want to be in the future? - I want to be a certified real estate agent. 2. What do you want to become in the future? -I want to become a certified real estate agent. 3. What do your parents want you to become? - They want me to become a

    asked by rfvv
  63. Physics

    The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D?

    asked by Laurie
  64. Trig

    From a point 120 feet from the base of a plant building the angle of elevation to the roof line of the building is 38 degrees. The angle of elevation to the top of an antenna is 43 degrees. The antenna is attached to the nearest edge of the roof and the

    asked by Dan
  65. statistics

    suppose x is a uniform random variable with c=30 and d=80 find the probability that a randomly selected observation exceeds 50 this is the direct question, i have no idea how to work this problem, please help

    asked by lexi
  66. social studies

    what were the 3 main effects of the french and indian war

    asked by qwertyuiop
  67. Math-Exponential functions

    An investment of $5,000 is made with three options:6% coumpounded annually, quarterly, and continuously. 1.) Create three functions 2.)What will be the value of each investment after 40 years? 3.)Which of the three investments will grow to a value of

    asked by Melia
  68. 5th grade math word problems

    if we need 5 oranges to make 3 small glasses of orange juice, how many small glasses of juice can we make with 100 oranges?

    asked by Anonymous
  69. Chemistry

    Suppose you dissolve 10 grams of HCl gas in 250 ml of water initially at 25 C, what will the final temperature of the solution be?

    asked by Rita
  70. Social Studies 8R - HELP!!!

    Why do you think some people called Rockefeller a Robber Baron? i really don't know why.....??????? i find him more of a an industrialist please help!!!

    asked by Laruen
  71. statistics!

    The following data represents the body mass index in a random group of twelve diabetic patients in a clinic. 18, 28, 31, 14, 25, 21, 22, 28, 35, 29, 27, 22. What is the z score of the person with the lowest and highest body mass index?

    asked by joane
  72. math

    Susan is 5 years older than her sister jennifer the sum of their ages is 51 write and equation and find the ages of both sisters

    asked by jimmy
  73. MAth

    A bOY goes on VacATION with fivE shirts.each day HE used TWO diferent shIRts EACH day. HOW MANy DAYS will IT TAKE him TO USE thE FIVe SHIRTS WITHOUT REPEATINg the pattern

    asked by THERESA
  74. Algebra

    Year, t Sales, S(t) 1 62 2 246 3 664 4 1579 5 3258 6 8430 7 14,532 (c) If S−1 exists, find S−1(3,258).

    asked by Help
  75. physics

    A ferry is crossing a river. The ferry is headed due north with a speed of 2.4 m/s relative to the water and the river’s velocity is 2.3 m/s to the east. a) What is magnitude of the boat’s velocity b) Find the direction in which the ferry is moving

    asked by Anonymous
  76. Calculus

    What is the point of inflection of the function f(x)=x^3-8x^2+5x+50? Is the local extrema at f(1/3)=50.8 max and f(5)=0 min? For the second derivative I got f(x)=6x-16 and then got x=16/6 when set to zero.

    asked by Bill
  77. 7th grade math ms.Sue please?

    What is the solution to -75 (find the square root) to the nearest integer? 9 8 -8 -9 -75 square root is 8.660254 wouldn't that be rounded to -9?

    asked by Delilah
  78. child care

    if a child repeats words over and over

    asked by Anonymous
  79. CHEMISTRY

    to resolve an object in an electron microscope the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.90 nm in diameter? Take the mass of an

    asked by Amy
  80. Chemistry

    How many grams of H2SO4 will be needed to react with 69.3gof NaOH? Can you list steps so I can understand this? Thanks

    asked by Colleen
  81. science

    what are some interactions that can take place when a beam of light hits a glass tank and then enters the water

    asked by laura
  82. Math

    Jose washed 3/10 of the windows on his house Saturday morning. He washed another 3/5 of the windows that afternoon. What fractional parts of the windows are not washed 3/10?

    asked by Jerald
  83. physics

    The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The

    asked by carol
  84. Math

    3/4+1/8=7/8? 1/2+1/3=5/6? 11/12-2/3=1/4? 7/10=1/2=1/5?

    asked by Jerald
  85. Physics

    The drawing shows two frictionless inclines that begin at ground level (h = 0 m) and slope upward at the same angle θ. One track is longer than the other, however. Identical blocks are projected up each track with the same initial speed v0. On the longer

    asked by Tim
  86. World History Honors

    What kinds of people sailed to the New World in the 1400s?

    asked by Marina
  87. math

    I am a 3 digits number less than 200. the tenths place is 2x more than the ones place. the number in the ones place is 2. what number am i?

    asked by jess
  88. Subtracting 3 digit numbers

    Jill is going on a trip from chicago to omaha to tulsa.Bill will travel from dallas to omaha.How much farther will jill travel than bill?

    asked by Jon
  89. physics

    A computer is reading data from a rotating CD-ROM. At a point that is 0.0382 m from the center of the disk, the centripetal acceleration is 118 m/s2. What is the centripetal acceleration at a point that is 0.0791 m from the center of the disc?

    asked by Anonymous
  90. Maths

    A room is 3 meters wide and has a volume of 60 cubic meters.calculate the floor of the room

    asked by Eri berry
  91. Physics HELP!!

    Two horizontal forces F1 and F2, are pulling an object of mass 3.05kg from two opposite sides. F1 pulls to the right and F2 pulls to the left. The magnitude of F1 is 99.2N. The object moves strictly along the horizontal x-axis, which we chose as positive

    asked by Ann
  92. Ap Chemisty

    If .237 mol of ammonia react with 56g of iodine, how much Nitrogen triiodid, in grams, is produced?

    asked by Kelsey
  93. Physics HELP!!

    Forces of 11.1N north, 19.9N east, and 14.0N south are simultaneously applied to a 3.62kg mass as it rests on an air table. What is the magnitude of its acceleration? b) What is the direction of the acceleration in degrees? (Take east to be 0 degrees and

    asked by Ann
  94. information literacy

    1. which article title represents a citation under the news results? A)priceton paleontologist produces evidence for new theory on dinosaurs extinction B)chunk of death dealing with astroid found C)second crater points to killer comets D)extinctions tied

    asked by blessing
  95. chemistry

    MgO + HNO3 = ?

    asked by bhanuka
  96. math homewok

    There are nine coins on the table , 5 nickels , 3 quarters and 1 dime. Tom , Bill and Drew each pick up three coins. Bill has 25 cent more than Tom. Drew has as much money as Tom and Bill together . What three coins Drew to pick up? my answer: Drew ===)2

    asked by Bob
  97. Algebra 1

    Change the math sentence, 25+27+29 greater than or equal to 81, into a verbal phrase using terminology consecutive numbers.

    asked by Heeeey
  98. Physics

    A stubborn, 191.0kg mule sits down and refuses to move. To drag the mule to the barn, the exasperated farmer ties a rope around the mule and pulls with his maximum force of 854.0N. The coefficients of friction between the mule and the ground are s=0.790

    asked by joane
  99. Physics- Projectiles

    A marlin jumps out of the water with an initial velocity of 5.0 meters per second at an angle of 80 degrees above horizontal. Approximately what maximum height will the marlin reach during it's flight?

    asked by Olivia
  100. physics

    A speed skater goes around a turn that has a radius of 29 m. The skater has a speed of 14 m/s and experiences a centripetal force of 450 N. What is the mass of the skater?

    asked by Anonymous
  101. Math

    The table shows men's shoe sizes in the United States and the corresponding European shoe sizes. Let y = f(x)represent the function that gives the men's European shoe size in terms of x, the men's U.S. size. Men's U.S. shoe size, Men's European shoe size 8

    asked by Kristi
  102. algebra 1

    In 1975, when the United Nations was formed, there were 51 member nations. In 1987, there were 159 member nations. Write an equation that gives the number of nations in the UN, y, in terms of the year, t. Let t=0 correspond to 1945 and assume that

    asked by layla
  103. algebra

    12 + 24 (10 - 4) (9 - 7) - 17

    asked by kid
  104. U.S HIORTY

    7-2 GUIDED READING WORKBOOK ANSWERS

    asked by QINGQIUWU
  105. algebra

    find the number of decibels for the power of the sound. round to nearest decibel. a rock concert 5.34*10^-6 watts/cm^2 D= Db

    asked by missfubu-c
  106. physics

    A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal att he same angle as the angle of incidence. Find: a.the angle between the light

    asked by help
  107. math

    an airplaine has an altitude of 20,000 feet. it climbs another 5,000 feet to avoid a storm. What integer expresses the position of the airplane compared to ground level?

    asked by kyle
  108. Comment

    Excuse me, but I really need help on the science question if you could help me that would be nice!

    asked by Unknown
  109. Physics

    At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.3 m/s2. At the same instant a truck is 11.7 m down the road and traveling with a constant speed of 10.4 m/s. (a) How far beyond the traffic signal will

    asked by Tommy
  110. math

    what could i use to determine the probability that i will get at least 8 of 15 true or false questions right?

    asked by Rachel
  111. math

    My number has the same number of thousands as tens. It has three hundreds and no ones. The sum of its digits is 11

    asked by kaiuntai
  112. Zion Chapel

    explain how to find 40x50 usine mental math?

    asked by Dana
  113. math

    emelio has 9 coins that total to be 2.21 he does not have a dollar coin what are the coins?

    asked by Anonymous
  114. Math

    7/10-1/2=1/5?

    asked by Jerald
  115. math

    Calculate the mass percent ({\rm m}/{\rm m}) for the solute in each of the following solutions: 95g of {\rm NaOH} in 365g of {\rm NaOH} solution

    asked by hayleyg
  116. literature

    Reflecting on this week’s literary readings, as well as your own reading experiences, identify at least one major similarity and one major difference between the forms of the short story and the poem. How do the differences between these literary forms

    asked by john
  117. calculus

    (a) Find the number c such that the limit below exists. Limit as x goes to -2 of: x^2+cx=c-3/x^2+2x (b) Calculate the limit for the value of c in part (a).

    asked by Andrew
  118. math

    Evaluate: 4.84 x 39 + 61 x 4.84

    asked by lori
  119. Math

    1.describe the meaning of the number -.1 in the formula, in terms of its meaning in relation to the profit.

    asked by Kathy
  120. physics

    A 1.50-kg block slides on a rough, horizontal surface. The block hits a spring with a speed of 2.07 m/s and compresses it a distance of 12.2 cm before coming to rest. If the coefficient of kinetic friction between the block and the surface is μk = 0.577,

    asked by kay
  121. Tax question

    The same filing requirements that apply to individuals determine if a final return must be filed for a person who dies during the year. True or false My answer would be True is it right. If I'm wrong can u explain.

    asked by Lil
  122. Chemistry

    What is Daltons atomic model look like?

    asked by Bryce
  123. World History

    I need to find a current event that is odd or weird. Post links!

    asked by Anonymous
  124. Chemistry

    Convert 29.8 atm into torr I did this 29.8(1/760) and got 22648 but its not going online as correct

    asked by Jena
  125. 7th grade math only 3 questions Ms.Sue please

    14. If a right triangle has one of leg measuring 27 inches and one leg measuring 23 inches, what is the length of the hypotenuse to the nearest inch? (1 point) 36 14 3 2 15. The description of a TV is based upon the diagonal length. If the height of a TV

    asked by Delilah
  126. physics

    standing on the ground, you throw a 0.55 kg lunch bag at a friend, you manage to throw the bag straight up (vertically) using 50 J of energy to throw it there is also a crosswind of 0.5 m/s. How high will the bag travel before all of its kinetic energy is

    asked by kathy
  127. Simple Interest Applications

    An investor purchased a 91-day, $100,000 T-bill on its issue date for $99,326.85. After holding it for 42 days, she sold the T-bill for a yield of 2.72%. a)What was the original yield of the T-bill? b)For what price was the T-bill sold?

    asked by Steph
  128. science

    How to count atoms ?

    asked by brodhi
  129. World History Honors

    What kinds of people sailed to the New World in the 1400s?

    asked by Marina
  130. Physics

    A 69 kg swimmer free-falls off a 10.0 m diving platform. The diver comes to a stop 2.7 m below the water's surface. What is the magnitude of the force exerted by the water on the swimmer. (assume a positive direction is up) I calculated the force on the

    asked by Becca
  131. Biology

    1)Animal cells prefer to be in isotonic solution, while plant cells prefer to be in hypotonic solution. Explain what this means and why it is so. 2.) In terms of Gibbs free energy, what does “unstable” mean? Also, give at least two additional ways to

    asked by Alex
  132. Math

    u^2+3u/u^2+2u-3 X u^3-u/u^2-u-2

    asked by Jessica
  133. scientist

    how could measuring the orbit of a comet help scientists understand when it will next be visible on Earth?

    asked by victoria
  134. algebra

    WRITE THE EQUATION REPRESENTED BY THE MODEL. XXX + + + = XX - - -

    asked by Anonymous
  135. 7th grade math help Ms. Sue please

    Hi! Sorry to keep bothering you with questions. Can you help me on 6 and 13 please? I cannot find the answers. Also, can you check my answers to 11 and 19? Thanks! 6. If point A is located at (0, –8) and B is located at (4,–5), what is the distance

    asked by Delilah
  136. Algebra 2

    When dealing with imaginary and complex numbers, are there 2 solutions? I.e.: x^2=4 x=2,-2 For: x^2=-4 x=2i or -2i ? (Is there a 2i and -2i, like for real numbers?)

    asked by Bart
  137. Chemistry

    Given the known compounds--- CO2,KF,MgO,CaCL2,Na2O,Ga2O3 and AICl3- predict tbe formula for the following combinations of elements. 1.Si and O ____ 2.Ba and S______ 3.K and S________ 4.B and F_________ 5.Li and Br________ 6.Sr and O__________ Thanks for

    asked by Jessica
  138. Algebra

    write the following in standard form: slope= 2/3 y- intercept= 3

    asked by Maddie
  139. math

    How do i subtract integers? Having trouble with problems like -14-(-5)-8

    asked by lulu
  140. Math

    Let d(t) be the shortest distance between Earth and the nearest other planet as a function of time t (where t is in years and t = 0 is noon on January 1, 1000 A.D., say). Is d continuous? Why or why not?

    asked by Bob
  141. art

    what are the three primary colors.

    asked by Anonymous
  142. Physics

    A fully charged 90-µF capacitor is discharged through a 60-Ω resistor. How long will it take for the capacitor to lose 80% of its initial energy? I know energy is given by E(t)=q(t)^2, but beyond that I really don't know how to solve this. Any

    asked by Bruce
  143. MATH

    From experience, the manager of Kramer's Book Mart knows that 40% of the people who are browsing in the store will make a purchase. What is the probability that among ten people who are browsing in the store, at least four will make a purchase? (Round your

    asked by Paul
  144. College Chemistry

    Calculate the heat in joules needed to warm 225g of water from 88.0 degrees Celsius to its boiling point 100.0 degrees Celsius

    asked by Alex
  145. algbra

    Find g:=ged[389,222] and a,b E Z such that g=a.389+b .222

    asked by nithiya nithyananthan
  146. science

    A reaction took place between a magnesium and florine in a large empty container if attraction and repulsive between these atom are equal at a distance of 0.001*10^-10m, calculate the couloumbic force between two atoms.

    asked by Simon
  147. German

    I need Some more opinions on my paragraph for an essay of mine. Any help appreciated Mein guten Freunds name ist Meaghan. Sie ist Freundlich Klein Intelligent und Tolerant. Sie hat langes blondes Haar. Sie spricht und liest Spanisch. Ich gehe herumhägen

    asked by jv
  148. COLLEGE MATH

    ANDY PUT DOWN 1/14 INCH THICK SUBFLOORING.nEXT HE NAILED DOWN 3/16 INCH THICK UNDERLAY.ON TOP OF THAT , HE NAILED DOWN 4/14 INCH THICK HARDWOOD FLOORING.hAW THICK WAS THE RESULT?

    asked by NICOLETA
  149. Physics

    12th grade physics ap question. A baseball with a mass of 120 g is hit 21.8 m into the air. The ball is caught by the third baseman 2.5 m above the ground. What potential energy did the ball develop at its highest point? How much potential energy did it

    asked by Ravin
  150. math

    how could you use the product of 108 and 4 to find the product of 324 and 4?

    asked by kyle
  151. Math

    An airplane flying at a speed of about 100 mph was once overtaken and passed by a flock of sandpipers! Suppose that a flock of these birds can fly at 110 miles per hour with a certain wind and at 90 mph against it. If they fly a certain distance with the

    asked by JJ
  152. physics

    A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal at the same angle as the angle of incidence. Find: a.the angle between the light

    asked by Help please
  153. ap chemistry help!!!!

    Ive been absent from class because of the flu so i don't have a clue how to figure these out! Help! due tomorrow at 12! 1).Suppose that 135 g of ethanol at 23◦C is mixed with 255 g of ethanol at 75◦C at constant atmospheric pressure in a thermally

    asked by harry
  154. Spelling

    Donna's __________ countenance in no way showed her inner nervousness.< Which word best fits this sentence: pensive; peril; renounce; serene; solace; or tranquillity?

    asked by Losa
  155. Spelling

    Is the word proclaim a synonym of renounce?

    asked by Losa
  156. math 7 grade

    Mr. olsen has classified the charities to which he gives money to into 3 different groups. Each charity in the 1st. group will get $1 . Each charity in the 2 nd. group will get 9 times as much or $9 . Each in the 3 rd. will get 9 times as much as each in

    asked by Bob
  157. math

    Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?

    asked by bobby
  158. Physics

    During a violent thunderstorm, hail the size of marbles (diameter = 2.10 cm) falls at a speed of 37.0 m/s. There are estimated to be 175.0 hailstones per cubic meter of air. Assume that, as for ice, 1.00 cm³ of hail has a mass of 0.920 g. What is the mass

    asked by Steeve
  159. math

    i have to solve this how I got y(3)+5y(2)-4y-20?

    asked by tc
  160. sociology

    Smiling and making polite remarks to people we do not like is an example of: A) making another feel embarrassment. B) exercising power over another. C) idealizing a personal performance. D) using tact.

    asked by amber
  161. Math

    What multiplication fact can be found using the arrays for 2x9 and 5x9

    asked by Zyon
  162. Is the nucleus composed of protons and neutrons?

    or protons and electrons?

    asked by Bryce
  163. math 7 grade

    x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?

    asked by Bob
  164. What did James Chadwick discover?

    What did James Chadwick discover?

    asked by Bryce
  165. chemistry

    1. Compare the effects of adding the strong acid & base to the pH of water vs. the acetate and phosphate buffers.

    asked by hi
  166. BC Calculus

    Use linear approximation to estimate sec^2(pi/4 + .025) Need help quickly please!! :)

    asked by Jake
  167. eco365

    Write a paper of no more than 1,750 words analyzing the current market conditions of the organization or industry you selected. Address the following topics: • Market structure • Effect of new companies entering the market • Prices • Technology •

    asked by Anonymous
  168. Chemistry

    The addition of a non-volatile, non-electrolyte will increase the amount of your vapor found above the solution over that of the pure liquid? (True or False)

    asked by Josh
  169. Math

    Diver A is lowered 28 feet below the surface of the ocean. She swims down another 6 feet. What integer expresses her position compared to the ocean's surface?

    asked by Beau
  170. SAT

    Can someone critique an SAT Essay that I post? I would really appreciate it. Thanks.

    asked by Sanya
  171. Algebra (Graphing Functions)

    Consider the following function. f(x) = −3x if x < −2 x2 if −2 ≤ x < 2 −3 if x ≥ 2 Please help me find the intervals on which f is increasing, is decreasing, or is constant(in interval notation). As well as the x and y intercepts for the graph.

    asked by John
  172. Calculus

    A baseball diamond is a 90 foot square with the pitcher's mound at the square's center. A runner races for home at 25 ft/sec. How fast is his distance from the pitcher changing as he crosses the plate?

    asked by John
  173. 5th grade math word problems

    Frank saved 50% by purchasing his airline ticket early. His wife paid full price. If their total was $294 how much was Franks's ticket only? Can someone please explain this to me in 5th grade terms.

    asked by Anonymous
  174. SAT

    Can someone critique an SAT Essay that I post? I would really appreciate it. Thanks.

    asked by Sanya
  175. 5th grade word problems

    if we need 5 oranges to make 3 small glasses of orange juice, how many small glasses of juice can we make with 100 oranges? please explain how to get the answer in terms i can understand

    asked by Anonymous
  176. Math

    He said it to his brothers he said it to his sisters what did the witty raindrop exclaim to all the others??????

    asked by Isabella
  177. Physics

    Consider a human femur of length L = 469 mm. Model the bone as a hollow cylinder, with inner radius Ra = 4.17 mm and outer radius Rb = 12.51 mm. If a 74 kg person's weight is supported by one leg, calculate the stress on the femur; express as percentage of

    asked by Anonymous
  178. ap stats-- probability

    over a 5 year period of time, 80% of winter days in Philadelphia had an average temperature above freezing. 20% of those days had precipitation. Of the days with an average temperature below freezing, 15% had precipitation. A winter day is chosen at

    asked by zack
  179. math

    Is 3.274 greater than less than or equal to 3.27?

    asked by elementary kid
  180. english

    help me in direct and indirect

    asked by ADRIAN
  181. math

    List in order from greatest to least. 3.277 3.274 3.27 I do not know how to put those in order?

    asked by johnny
  182. Physical Science

    Sound travels about 1530 m/s in sea water. How many times faster does sound travel in sea water than in air? (The speed of sound in air at 25°C is about 345 m/s.)

    asked by Mary
  183. Dilations

    1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (-1,2) and (3,-3). a. (2,4) and (6,6) b. (2,4) and (6,6) c. (-2,4) and (6,-6) d. (2,-1) and (-3,3) 2. Given a scale factor of 1/2, find the coordinates

    asked by Jman
  184. chemistry

    One buffer solution used to calibrate a pH electrode was made by dissolving 2.24g of potassium propanoate, C2H5COOK, in 250cm3 of 0.20 mooll-1 propanoic acid.

    asked by Jen
  185. CHEMISTRY!?!

    Given the known compounds--- CO2,KF,MgO,CaCL2,Na2O,Ga2O3 and AICl3- predict tbe formula for the following combinations of elements. 1.Si and O ____ 2.Ba and S______ 3.K and S________ 4.B and F_________ 5.Li and Br________ 6.Sr and O__________ Thanks for

    asked by Jessica
  186. CHEMISTRY!?!

    Given the known compounds--- CO2,KF,MgO,CaCL2,Na2O,Ga2O3 and AICl3- predict tbe formula for the following combinations of elements. 1.Si and O ____ 2.Ba and S______ 3.K and S________ 4.B and F_________ 5.Li and Br________ 6.Sr and O__________ Thanks for

    asked by Jessica
  187. Chemistry

    A solution of magnesium chloride, MgCl2, is prepared by dissolving 19.0g of MgCl2 in 250 mL OF water. a.) Calculate the weight percent of magnesium chloride in solution. b.)The denstiy of the above solution is 1.05 g/mL. Calculate the molarity of the

    asked by Josh
  188. Math

    Point A is 340 feet above sea level. This is 2/3 of the distance between point B and sea level. What integer expresses the position point B compared to sea level?

    asked by Jenny
  189. us history

    what is the worlds greatest invention???

    asked by cody
  190. chemistry

    3. What volume of 0.18M Na2CO3 would neutralize 25ml of the HCL solution?

    asked by Katie Wilson
  191. math

    A stereo regularly selling for $547 is discounted 11%. What is new sales price?

    asked by Leverne
  192. Liberal Arts Mathematics

    Could you show me the steps on how to figure out the (h,k) radius?

    asked by Roxy
  193. math

    Karl piled twelve 1" cubes in three layers on top of a square made with four 1" cubes. What shape is the structure that Karl made?

    asked by bobkit
  194. drafting

    how to take 5/16 and make a 1/4 scale on paper

    asked by chelsea
  195. prob and stats

    11. Assume that the population of heights of male college students is approximately normally distributed with mean m of 72.15 inches and standard deviation s of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find (B) Find the

    asked by Anonymous
  196. Math Help

    I posted this earlier but no one answered. :( 1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (-1,2) and (3,-3). a. (2,4) and (6,6) b. (2,4) and (6,6) c. (-2,4) and (6,-6) d. (2,-1) and (-3,3) 2. Given

    asked by Jman
  197. math

    Put in order least to greatest 0.4 0.44 4.00 0.04 Please help me solve this

    asked by bo 5th grader
  198. math

    Ann makes 4 signs in 1 and 1/4 hours and if he worked 6 2/8 hours how many signs can he make?

    asked by Emily
  199. math

    (X`2-7x+10x`3+1) ÷(2X-1)

    asked by jamie
  200. biology

    Explain how you might determine the role of an essential developmental gene using the following as a guide: *use of model organism? Why? *Use of conditional knockouts/knockouts/hypomorphic allele/null allele/ RNAi? Why? *locate its products, mRNA and

    asked by alleyx3
  201. Chemistry

    #23 At 25 °C only 0.0800 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C?

    asked by Mari Micci
  202. Pre-Cal/Trig

    Explain how to solve the following question. Surveying: From a point A hat is 10 meters above level ground, the angle of elevation of the top of a building is 42 degrees and the angle of depression of the base of the building is 8 degrees. Approximate the

    asked by Monica
  203. Physics

    A spring with a spring constant k=450.0 N/m is attached to a mass of m=8 kg and stretched -0.5 m from its equilibrium position and released. What is the speed of the block when it is at the equilibrium position?

    asked by Davis
  204. chemistry

    how will you recognize that a singe replace reaction has occured when you combine an active metal with 6M HCI

    asked by demetris
  205. math question

    Which is greater 0.4 or 0.54?

    asked by seannbob
  206. Physics

    A 4.3 g dart is fired into a block of wood with a mass of 22.6 g. The wood block is initially at rest on a 1.4 m tall post. After the collision, the wood block and dart land 3.1 m from the base of the post. Find the initial speed of the dart.

    asked by Angela
  207. Philosophy

    Explain why it would be incorrect to say that AU is the view that an action is morally right just in case it causes more pleasure than any alternative

    asked by Amy
  208. math %

    I loaned Johnnie $5000.00 to be repaid $250.00 monthly loan past due nothing was every paid / interest rate is 10% what does johnnie owe me loaned year 2010 now it is Oct 2012?

    asked by treasure roy
  209. math

    what are the partial product and the product of 18x4

    asked by Deaundre
  210. Physics

    A 4.3 g dart is fired into a block of wood with a mass of 22.6 g. The wood block is initially at rest on a 1.4 m tall post. After the collision, the wood block and dart land 3.1 m from the base of the post. Find the initial speed of the dart.

    asked by Angela
  211. 2nd grade math

    write the sum.Show the ten-ten-fact you used. 9+7=16 /\ 1 6 10+__=? is it 10+6=16

    asked by Alexis
  212. Math

    How much larger is the 6 in 657,879,004 than the 6 in 789,456,234?

    asked by Jennifer
  213. math

    what did the sardine say when a submarine went buy

    asked by ivy pembrook
  214. math

    number sense what two simpler problems can you use to find 9x38?

    asked by johnnie
  215. Social studies

    Do only girls have sleepover party (pajama party)in the USA?

    asked by rfvv
  216. business math

    how do you convert 89/6 to a mixed number?

    asked by lawanda
  217. Social studies

    What caused the Japanese ( what did the USA do) to attack Pearl Harbor.

    asked by Chris
  218. math

    At this rate how many minivans would pass luann if 60 vehicles passed her there are 15 minivans now and 45 vehicles total

    asked by Bobo
  219. algebra

    Ben Cole was hired to shovel 100 tons of coal. He has been shoveling coal at a rate of 16 tons per day. After 3 days his brother Char joins him so they can finish the job faster. Char can shovel 10 tons per day. Find the amount of the 100 tons shoveled by

    asked by kate
  220. Math

    Ned caught 1/3 pound of fish. Sarah caught 5/12 pound of fish . Jessica caught 1/6 pound of fish. How much fish did all three of them catch?

    asked by Jennifer
  221. Social studies

    What caused the Japanese ( what did the USA do) to attack Pearl Harbor.

    asked by Chris
  222. science(word definitions)

    whats the difference between the words dominant and recessive

    asked by Anonymous
  223. Physics

    A 750 N student stands in the middle of a frozen pond having a radius of 5.4 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 2.0 kg physics textbook

    asked by Angela
  224. Physics

    The coefficient of kinetic friction for a 34.3 kg bobsleigh on a track is 0.150. What external force is required to push it down a 5.60° incline and achieve a speed of 60.12 km/h at the end of 75.2m ?

    asked by Steeve
  225. Sunset

    At noon, ship A is 50 miles north of ship B and is headed south at 16mph. Ship B is headed west at 12 mph. At what time are they closest together, and what is the minimum distance between them?

    asked by Ali
  226. science

    Where in nature could you find a source of the same energy as that provided by batteries? explain

    asked by Jeremy
  227. Science

    I need help with coming up a hypothesis for and Organic Compound lab! Anyone have an idea?

    asked by Samantha
  228. c++

    Distance between two 3-D points. Given two points in space (3-dimensional), find the distance between them. The user will input the coordinates (x,y,z) of the two points and your program will calculate and display the distance between the points.

    asked by amira
  229. Math Expert Help Me

    I posted this earlier but no one answered. :( 1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (-1,2) and (3,-3). a. (2,4) and (6,6) b. (2,4) and (6,6) c. (-2,4) and (6,-6) d. (2,-1) and (-3,3) 2. Given

    asked by Jman
  230. Math

    the speed of a point A due to the rotation of the earth is twice that point of B.if A is on latitud 22 degree to the north calculate the latitude of B

    asked by flexy
  231. Math

    What is the "pre-image" of a function?

    asked by Cicilia
  232. Physics

    A uniform ladder 10.0m long and weighing 50.0N rests against a smooth vertical wall. If the ladder is just on the verge of slipping when it makes a 50 degree angle with the ground, find the coefficient of static friction between the ladder and ground.

    asked by CM
  233. Math

    What is the Least Common Multiple of (31,180)

    asked by Char
  234. Geometry

    The 8 rowers in the racing boat stroke so that the angles formed by their oars with the side of the boat all stay equal. Explain why their oars on either side of the boat remain parallel.

    asked by Anonymous
  235. Math

    A board, 32 cm long is cut into three pieces such that the second piece is twice as long as the first and the third is 7 cm longer than the second. Find the length of the shortest piece.

    asked by awade
  236. Rutgers University

    A regional manager visits local fast food franchises and evaluates the speed of the service. if the manager receives her meal within 45 seconds, the server is given a free movie-admission coupon. If it takes more than 45 seconds, the server receives

    asked by Kiesh
  237. Health

    secondhand smoke is also referred to as _____. A. environmental tobacco smoke B. Involuntary smoking C. Passive smoking D. All of the above I said C but it was wrong

    asked by shawess
  238. Algebra 1

    3p - p = 6

    asked by Anonymous
  239. Math

    Please help! Calculate typing speeds of 45 words per minute, and make a reasonable estimate of how long it will take you to do that 1000 lines a day. We will assume a 65 character line = 13 words (assumption of 5-character words). Assuming you earn 6 cents

    asked by spaz2248
  240. physics

    Consider a spacecraft that is to be launched from the Earth to the Moon. Calculate the minimum velocity needed for the spacecraft to just make it to the Moon’s surface. Ignore air drag from the Earth’s atmosphere. Hint: The spacecraft will not have

    asked by Anonymous
  241. science

    What property of gases allow them to completely fill whatever space they are in?

    asked by cody
  242. physics

    Consider a spacecraft that is to be launched from the Earth to the Moon. Calculate the minimum velocity needed for the spacecraft to just make it to the Moon’s surface. Ignore air drag from the Earth’s atmosphere. Hint: The spacecraft will not have

    asked by bee-z
  243. math help

    -7over9 . 3 over 5 is it 7 over 15 or -7over 15

    asked by all about me
  244. Statistics

    a city law-enforcement official has stated that 20% of the items sold by pawn shops within the city have been stole. Ralph has just purchased 4 items from one of the city's pawn shops. Assuming that the official is correct, and for x = the number of

    asked by Kiesh
  245. physics

    A tennis ball (m  57 g) is projected vertically with an initial speed of 8.8 m/s. (a) If the ball rises to a maximum height of 3.7 m, how much kinetic energy was dissipated by the drag force of air resistance? (b) How much higher would the ball have gone

    asked by bee-z
  246. English

    How do the routines of life help give people their identities?

    asked by Makayla
  247. math

    how do u divid 294 by 1.5

    asked by Anonymous
  248. math

    2:45 p.m- 6:15pm is about how many hours worked

    asked by Dnai
  249. science

    where does the water on the outside of a glass cup come from

    asked by cody
  250. Politics

    I know who the Director of Health and Human Service is I want to know who the President of DHS The Department of Human Services is?

    asked by Bonnie
  251. Geometry

    Below is a worksheet I have to do for my geometry class. I am not sure about the answers I have given and I have no clue about the ones not answered. Any help will be much appreciated and thank you in advance. A. Determine the number of triangulations for

    asked by Angie
  252. Calculas

    F(X)=9 csc6(X) it is continous from -infity to infinity except what value?

    asked by Mohammad Al-Abdullah
  253. science DUE FIRST THING IN THE MORNING PLEASE HELP

    where did the water on the outside of a glass come from

    asked by cody
  254. chemistry

    1. what is the smell and odor of NaCl when you add AgNO3 and HNO3. 2. What is the smell and odor of NaBr when you add AgNO3 and HNO3. Does a precipitate form? 3. What is the smell and odor of NaI with AgNO3 and HNO3? Is there a precipitate?

    asked by Anonymous
  255. Physics

    The third harmonic of a guitar string has a frequency of 170 Hz. What is the length of the guitar string if the speed of the waves on the string is 125 m/s? 1.103 m 2.206 m 0.368 m 2.040 m B?

    asked by Meep
  256. math 3

    the distance between los,angeles,ca and boston .ma is about 3,020 miles. twice a year,Li makes a roundtrip from LA to Boston. how many total miles does Li travel each year for these trips? please solve.

    asked by stephie
  257. chemistry

    What is the solution if you mix Sodium carbonate with sulfuric acid. Will it be clear or cloudy. Is the gas colorless?

    asked by Anonymous
  258. math

    a rectangle is made of 9 tiles and has 3 tiles in each row. how many different number sentences can you write for this rectangle?

    asked by jay
  259. Math

    Hello, i need help to calcul: ( 1/2 ( -1 + i^3 )) ^2 Thanks for your help.

    asked by Maxence Wallart
  260. World History

    What is the basis of the feudal system?

    asked by Losa
  261. Physics

    A box weighing 136. N rests on a table. A rope tied to the box runs vertically upward over a massless frictionless pulley and a weight is hung from the other end. What is the force that the table exerts on the box if the weight hanging the other side of

    asked by Steeve
  262. math

    betsy is making a flay, she can choose three colors from red, white,blue, ang yellow. how many choices does betsey have?

    asked by anthburkeony
  263. Math

    Ryan brought a red milk snake to show during science class. Then snake is 56 centimeters long. Find its length to the nearest whole inch.

    asked by Losa
  264. physics

    I am posting this question again as noone has answered it yet. State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS Is a= -6.75D? b= -5.75D? c= -4.75D?

    asked by Please help if you can...
  265. Science

    Name one feed and feeding system in pig rearing.

    asked by Sasha
  266. social studies

    what was the purpose for British to seize the hudson river valley

    asked by qwertyuiop
  267. calculus

    don't understand at all... find the slope of the tangent line to the curve y=xe^x at (1,e)

    asked by dino
  268. SAT Essay

    Assignment: Is there such a thing as success without sacrifice? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experience, or observations.

    asked by Sanya
  269. Math

    Brad is building shelves for his mom. Each shelf will be 1/2 inch think with a 1/8 inch veneer glued on top. What is the total thickness of the shelf 5/8?

    asked by Jerald
  270. Geometry

    Find the measures of an interior angle and an exterior angle of a regular polygon with 6 sides.

    asked by Stacey
  271. Maths

    Three boys shared some cards. Peter had twice as many cards as Farid. The ratio of the number of cards Peter had to the number of cards Kiran had was 6:5. Farid gave 2/3 of his cards to Peter and the rest to Kiran. How many cards did Kiran have at first if

    asked by Lance
  272. Math

    A box has 8 blue and 5 green jelly beans. A bag has 6 blue and 8 green jelly beans. A jelly bean is selected at random from the box and placed in the bag. Then a jelly bean is selected at random from the bag. If a green jelly bean is selected from the bag,

    asked by Kerry
  273. science

    what force must be applied to the end of a 2.0 meter long crowbar in order to lift a 500 Newton rock if the fulcrum of the bar is 0.5 meters from the rock?

    asked by rowena
  274. Math: Functions and Definitions

    What is the "pre-image" of a function?

    asked by Cicilia
  275. English

    You can buy fashionable shoes at a good price. (Is 'at a good price' an adjective phrase modifying 'shoes'? Or is 'at a good price' an adverbial phrase modifying 'buy'?)

    asked by rfvv
  276. logical reasoning, math

    a blue box have 5 times as many marbles as a red box. the blue box has 24 more marbles than a red box. how many marbles are in each bx?

    asked by maura
  277. psychlogy

    what might be the advantages of using the archival methods?

    asked by christy
  278. Physics

    A m = 1.85 kg box rests on a plank that is inclined at an angle of θ = 65.5° above the horizontal. The upper end of the box is attached to a spring with a force constant of 21.0 N/m. If the maximum force of static friction between the box and the plank

    asked by Anonymous
  279. science

    How do you know a television change electricity into light energy? What other form energy is produced?

    asked by Jeremy
  280. government

    Is the watchdog function ever exercised in a biased way? How?

    asked by Anonymous
  281. 3rd grade math

    when i am rounded to the nearest ten, i am 80. the sum of my two digits is 15. what number am i?

    asked by Anonymous
  282. social studies

    why did br station in the colonies after 1773

    asked by qwertyuiop
  283. govt

    Do you agree with the expansion of technology we are more influenced by the media than ever before? If so, what are the positive and negative ramifications?

    asked by Anonymous
  284. 3rd grade math HELP ASAP

    When I am rounded to the nearest hundred I am 400. The digit in my tens is 4 more than the digit in my hundreds place. The digits in my hundreds place and ones place are the same. What number am I?

    asked by Niecee
  285. law

    Do you think design rights add more value for the company?

    asked by Amy
  286. English

    what is correct to use in a sentence pair of orphans or pair of orphan?

    asked by anonymous
  287. English

    Why does Huck make it appear that he has been murdered instead of simply rnning away from Pap?

    asked by Liah
  288. math

    plz help solve 6(4x+7)+x simply it plzz!thx for ur help

    asked by t
  289. MATH!!!! PLEASE HELP

    An eastbound train and a westbound train meet each other on parallel tracks heading in opposite directions. The eastbound train travels 12 miles per hour faster than the westbound train. After 1.5 hours, they are 174 miles apart. At what speeds are the two

    asked by awade
  290. math

    jackie and janice are sisters with the same birthday, different birth years. today jackie is four times as old as janice. next year she will 3 times as old as janice. if jackie is less than 10 this year how old will she be next year?

    asked by Anonymous
  291. Science

    Question: The greatest expansion of water occurs when: isn't it when it turns to ice?? The other answers are at 4C it gains temperature or at 4C it loses temperature. In the winter the pipes can break because the water in them freezes that's why I thought

    asked by MIKE
  292. math word problem

    Frank saved 50% by purchasing his airline ticket early. His wife paid full price. If their total was $294 how much was Franks's ticket only

    asked by Anonymous
  293. Physics

    I found the average acceleration of earths orbit around the sun over a period of 5 days by calculating delta theta and dividing by radius and 1/T. I got the right answer but as I am studying for my test, I am seeing the units do not work...does this make

    asked by Brenda