Questions Asked on
October 26, 2011

  1. Science

    Use the terms atom and element to explain what makes silver and gold different.

    asked by Carlos PLEASE
  2. Chem 101

    Using the "Unit conversion method", derive an equation to calculate the heat required to raise the calorimeter to the maximum temperature.

    asked by John
  3. CHEMISTRY

    for the reaction system H2 + X2 2HX Kc = 24.4 at 300 K a system made up fron these components which is at equilibrium contains 0.150 moles of H2 and 0.600 moles of HX in a 3.00 liter. calculate the number of moles of X2 present at equilibrium.

    asked by HELPP
  4. chemistry

    Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) ¨ Ca(OH)2(s) In a particular experiment, a 2.00-g sample of CaO is reacted with excess water and 2.14 g of Ca(OH)2 is recovered. What is the percent

    asked by Jess
  5. chemistry

    3.6 g of a hydrocarbon fuel is burned in a calorimeter that contains a 244 grams of water initally at 25.00 degrees C. After the combustion the temperature is 26.55 degrees C. How much heat is evolved per gram of fuel burned? The heat capacity of the

    asked by Aubrey
  6. Chem 101 calorimeter

    Using the "Unit conversion method", derive an equation to calculate the heat required to raise the calorimeter (2 nested styrofoam cups) to the maximum temperature. PS don't say it makes no sense because its obviously a real question

    asked by Guapo
  7. Maths

    A right pyramid on a base 4cm square has a slant edge of 6cm.calculate the volume of the pyramid

    asked by Vivian
  8. Science

    Use the terms atom and element to explain what makes silver and gold different. I've looked online but can not find an answer. Please help and thanks.

    asked by Carlos PLEASE HELP ME
  9. Statistics

    A survey organization takes a simple random sample of 625 households from a city of 80,000 households. On the average, there are 2.30 persons per sample household, and the SD is 1.75. Say whether each of the following statements are True or false and

    asked by Joyann
  10. chemistry

    The vapor pressure of water at 80 degrees c is 355mmHg. A 100cm3 vessel contained wateraturated oxygen at 80 degrees c., the total gas pressure being 760 mmHg. The contents of the vessel were transferred by pumping to a 50cm3 vessel at the same

    asked by el
  11. Help. Physics

    At the center of a 41.0 m diameter circular ice rink, a 61.0 kg skater traveling north at 1.05 m/s collides with and holds onto a 77.0 kg skater who had been heading west at 1.90 m/s. How long (in seconds) will it take them to reach the edge of the rink

    asked by ME
  12. Chemistry

    In the Formula... Na+ + NO2- + HSO3NH2 -> HSO4- + H2O + N2 + Na+ which I know has a 1:1 ratio, How do I figure out the Moles of N2 gas expected. Molar volume = 24.627 L/mol Moles of N2 produced = .0067 mol Volume of N2 gas of STP = .165 L Original used

    asked by Nadia
  13. Math please help

    A farmer has 120 feet of fencing available to build a rectangular pen for her pygmy goats. She wants to give them as much room as possible to run. What are the dimensions of the rectangular pen with the largest area?

    asked by By Lana
  14. chemistry

    How many grams of NH4Cl must be added to 0.490 L of 1.70 M NH3 solution to yield a buffer solution with a pH of 9.40? Assume no volume change. Kb for NH3 = 1.8 10-5.

    asked by kelly
  15. Math

    Julie and Eric row their boat (at a constant speed) 21 miles downstream for 3 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 7 hours. Find the rate of the current.

    asked by Hollana
  16. Science

    which of these two methyl orange and phenolphthalein gives more reliable and consistent results in the titration of H3PO4 with NaOH

    asked by Ro
  17. Chemistry

    Show, with equations, why the solution from which BaSO4 is precipitated cannot be allowed to be more than 0.01-0.05M in HCl.

    asked by Anonymous
  18. Science

    Is the answer D? Thank you The earliest atmosphere of Earth is not believed to have contained oxygen. Which cellular component would not have been useful at that time? A) chloroplast B) nucleus C) plasma membrane D) mitochondrion

    asked by Jason
  19. Physics...help!

    A sled slides along a horizontal surface on which the coefficient of kinetic friction is 0.30. Its velocity at point A is 7.6 m/s and at point B is 4.0 m/s. Use the impulse-momentum theorem to find how long (in s) the sled takes to travel from A to B.

    asked by Me
  20. Biology 110

    Name the 4 functions of the respiratory system. 1. 2. 3. 4.

    asked by Susan Yi
  21. biology

    Name 4 functions of the respiratory system.

    asked by sara may
  22. math

    write .98 as a fraction of a dollar in simplest form

    asked by Anonymous
  23. Physics

    Use conservation of energy to determine the angular speed of the spool shown in Figure P8.36 after the 3.00 kg bucket has fallen 3.20 m, starting from rest. The light string attached to the bucket is wrapped around the spool and does not slip as it

    asked by Nicole
  24. Accounting

    Could someone please look this over and tell me if I have this correct? I am not confident in the Trial Balance. May 1 Cash 101 25,000 Common Stock 311 25,000 3 Supplies 126 2,500 Accounts Payable 201 2,500 7 Rent Expense 729 900 Cash 101 900 11 Accounts

    asked by Student of Accounting
  25. Chemistry

    what is the mass of product that can be prepared from 1.00g of zinc metal?

    asked by Lovinsky
  26. General Chemistry

    How do I calculate the concentration of KmNO4 when.. Initial Volume is 50mL 0.11g sodium oxalate Volume of KMnO4 used to titrate oxalate and acid= 34.0 mL Volume of KMnO4 used to titrate acid only= 0.10 mL Please help me Thank you!

    asked by Ashley
  27. chemistry

    how would I draw the expanded formula for isopropylcyclopropane?

    asked by dominique
  28. Biology

    What are the three reaction pathways which pyruvate undergoes in the metabolic pathways inside the cell and what are the names of the final products of each of these pathways?

    asked by Tommy
  29. Physics

    A rock of mass m = 1.8 kg is tied to a string of length L = 2.4 m and is twirled in a vertical circle as shown in the figure below. The speed v of the rock is constant; that is, it is the same at the top and the bottom of the circle. If the tension in the

    asked by Freud
  30. Chemistry

    Suppose that a 0.6123-g unknown chloride-containing sample was dissolved, and and AgCl precipitated by adding a AgNO3 solution. The precipitate was filtered, ignited, and found to weigh 0.3324 g. What was the percent chloride in the unknown?

    asked by Anonymous
  31. Hardware

    Choose a commonly used microprocessor, Intel Core or IBM Power6. What data types are supported? How many bits are used to store each data type? How is each data type represented internally?

    asked by Mike
  32. statistics

    1. The on-campus housing costs for a semester at a state university are Normally distributed with a mean of $1553 and a standard deviation of $329. (a) What is the distribution of the mean on-campus housing cost for a semester at this university for a

    asked by Sarah
  33. OChem

    A solution consisting of water and ethanol is found to have a refractive index of 1.3541 at 20 degrees C. The refractive indices at 20 degrees C of water and ethanol are 1.3330 and 1.3610, respectively. Determine the molar composition (in percent) of the

    asked by Omar
  34. 4th grade math

    What is an expanded algorithm? Son doesn't know and didn't bring home his textbook, any ideas?

    asked by Sandy
  35. Calculus

    Find the total mass of the triangular region with coordinates (-1,0),(0,4),and (1,0). All lengths are in centimeters, and the density of the region is (x)=5+x grams/c^m2. I know that to get the total mass i have to do density* lenght and ingegrate, but I

    asked by Caroline
  36. Physical Science Concepts

    1) the industrial revolution occurred at about the same time as the growth of the theory of electromagnetism. a)What were some of the causes of the industrial revolution? b)What technology and industry can be assciated with the emergence of the

    asked by christopher
  37. Physics

    Problem 17.6 A helium-neon laser beam has a wavelength in air of 633nm . It takes 1.48 ns for the light to travel through 31.0 cm of an unknown liquid. Part A - What is the wavelength of the laser beam in the liquid? Express your answer with the

    asked by Paige
  38. Chemistry

    Decomposition reaction: CH2=CH2(g)---> CH4(g) + C (Graphite) If the decomposition begins at 10c and 40.0 atm with a gas density of .215 g/ml and the temp increases by 950K. (a) what is the final temperature of the confined gas (ignore volume of graphite

    asked by Tor
  39. interpret ELA

    "I'm thirty five years old; I been married eleven years and i got a boy who sleeps in the living room-and all i got to give him is stories about how rich white people live" INTERPRET THIS STATEMENT

    asked by FITTY
  40. science

    which abiotic factor separates marine ecosystems from river ecosystem? A)sunlight B)salt C)sand D)algae

    asked by miki
  41. Chemistry

    4.00 g dm^-3 of impure sodium carbonate is used in a titration. What could have caused the impurity in the sodium carbonate?

    asked by ?
  42. math

    Writing to Explain If you know that 7 x 8 =56, how can you use the Commutative Property of Multiplication to find the product of 8 x 7?

    asked by Isabella
  43. Chemistry

    At 60 celsius the value of Kw is 9.5x10^-14. considering this waht is the calculated value for the pOH of a 2.00x10^-3 M HCL solution at this temperature? the answer is 10.32 i do the -log and i get 11.31 please advice

    asked by HELPP
  44. Physics

    Problem 17.6 A helium-neon laser beam has a wavelength in air of 633nm . It takes 1.48 ns for the light to travel through 31.0 cm of an unknown liquid. Part A - What is the wavelength of the laser beam in the liquid? Express your answer with the

    asked by Paige
  45. physics

    Find the net torque (magnitude and direction) produced by the forces F1 (F1 = 17.3 N) and F2 (F2 = 26.1 N) about the rotational axis shown in the drawing. The forces are acting on a thin rigid rod, and the axis is perpendicular to the page. (x = 0.323 m, y

    asked by Sami
  46. physics

    Find the net torque (magnitude and direction) produced by the forces F1 (F1 = 17.3 N) and F2 (F2 = 26.1 N) about the rotational axis shown in the drawing. The forces are acting on a thin rigid rod, and the axis is perpendicular to the page. (x = 0.323 m, y

    asked by Sami
  47. Science

    Four students each added salt crystals to water and measured the time it took for all the crystals to disolve. The following table shows their results. A three-column table, with column headers 'Student, 'Temperature (°C), 'and 'Time (sec).' For Marcus,

    asked by Mary Helpppppp
  48. science

    The reaction 2SO + O2 ¨ 2SO3 is exothermic. (a) How will a rise in temperature affect the yield of SO3 in an equilibrium mixture of the three gases? (b) Will an increase in pressure raise or lower the yield? (c) In what possible way can the speed of the

    asked by Sheryl
  49. french

    thank you so much for taking so much time into helping me perfect my french essay I have done the corrections you have told me to do and I was wondering if you could go through and make sure the lanuage and grammar are all perfect. And thank you I really

    asked by Ellie
  50. skylin

    Two 75.0-kg hockey players skating at 5.75 m/s collide and stick together. If the angle between their initial directions was 135°, what is their speed after the collision? (Let the motion of player 1 be in the positive x-direction and the motion of player

    asked by fad
  51. Physics

    A simple Atwood's machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 7.0 m/s at the end of 7.0 s. At that instant, the kinetic energy of the system is 60 J and each mass has moved a distance of 24.5 m. Determine the

    asked by Kayla
  52. physics

    Potential energy and kinetic energy are forms of what kind of energy? 1. mechanical 2. nuclear 3. heat 4. electromagnetic 5. chemical

    asked by lynn
  53. Science

    Reggie has a sample of raw sugar made up of large particles and a sample of white sugar made up of much smaller particles. He dissolved 1 tsp. of each sample in 1 cup of water. Which dissolved fastest? a) Both dissolved at the same rate b) The white sugar

    asked by Regina ?????????
  54. Science

    A 110.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 35.0 deg with the horizontal. Find the magnitude of the applied force F.

    asked by Mark
  55. chemistry1

    How many mL of 0.200 M NaOH are needed to titrate 20.0 mL of 0.100 M H2SO4?

    asked by emma
  56. chemistry

    how long would it take a radio wave with a frequency of 7.25 x 10to the 5th to travel from Mars to earth if the distance is approx. 8.0 x 10 to the 7th?

    asked by karen
  57. physic

    A 1.20-{\rm kg} block of wood sits at the edge of a table, 0.720 m above the floor. A 1.20×10−2-{\rm kg} bullet moving horizontally with a speed of 750 m/s embeds itself within the block

    asked by chris
  58. Math

    Am having trouble figuring out how to work this problem. We are currently studying about least common multiples. The problem is: Stacey jogs every third day and swims every fourth day. If she is jogging on Monday, what day of the week will she end up

    asked by Brandi
  59. Science

    Organisms that maintain a constant body temperature rely on the heat produced by cells. Where does this heat come from? A) Special metabolic pathways exist just for the production of heat. B) Mitochondria produce heat in the form of ATP. C) Plants store up

    asked by Jason
  60. science

    if the radius of a metal hoop that surrounds a silo were to expand by 1.00 m, the circumference of the hoop would increase by 6.28 m. If a metal hoop that completely surrounds the earth were to thermally expand so that its radius increased by 1.00m , by

    asked by Debra
  61. Chemistry

    Our class did an expeiment of adding sodium carbonate and calcium chloride. The experiment only yielded 28% of the calculated yield. The class did the experiment as a group (there are only 4 students in our class) and the experiment was closely supervised

    asked by Robert
  62. statistics

    For a hypothetical normal distribution of test scores, approximately 95% fall between 38 and 62, 2.5% are below 38, and 2.5% are above 62. Given this information, (a) the mode=_____ and (b) the standard deviation=_____.

    asked by Scott F
  63. physics

    Four objects are held in position at the corners of a rectangle by light rods . m1 2.90(kg) m2 1.90(kg) m3 4.50(kg) m41.90 (kg) (a) Find the moment of inertia of the system about the x-axis. Answer in kg · m2 (b) Find the moment of inertia of the system

    asked by Allie
  64. Math

    Tile Pattern... A design starts with 1 tile and it continues to grow the next day to 4 tiles and on the third day there is 13 tiles. How many tiles will there be on the 10th day? How many tiles on the 50th day? Find a formula for any number?

    asked by Linda
  65. Consumer Math

    Ricki Cohn Encyclopedia sales Commission rate: 11% Month’s sales: $2,550 What is the monthly commission?

    asked by jimmy
  66. CHEMISTRY

    If the OH ion concentration in an aqueous solution at 25 celsius is 3.4x10^-3 M the the H concentration in moles per liter in the same solution is? answers is 2.9x10^-12 i do the -log and i get 2.46 i don't know that else

    asked by HELPP
  67. Chemistry

    A student made a determination of the empirical formula ot tungsten oxide (WO) produced by the total ignition of air of a smaple of metallic Tungsten. From the lab: Weight of crucible 11.120g weight of tungsten 8.820 weight of crucible and product (WO)

    asked by Izzie
  68. al gebr word problem MATH

    parts to fix your car cost $55.35. the mechanic charges $35 per hour for labor. the final bill is $177.85. how long did the mechanic work on your car? write and solve an equation. show work. i got; 177.85 - 55.35 = x x / 35 = is this almost right? im not

    asked by marko
  69. Phyisics

    A 2kg hallow sphere of a radius 6cm starts from rest and rolls without slipping down a 10 degree incline. if the length of the incline is 50cm then the velocity of the center of mass of the hallow sphere at the bottom of the incline is?

    asked by JP
  70. Science

    It’s OK to say that your brain is solar powered, because A) mitochondria in plant cells convert solar power to the chemical power that is used to run your brain. B) cellular respiration is powered by sunlight. C) the antenna complex in chloroplasts acts

    asked by Frank
  71. Calculus

    Find the value of the derivative at each indicated extremum.

    asked by Alexis
  72. math

    with a mean of 515 and a standard deviation of 135, what percentage score 110-515 using the 68-95-99.7 rule

    asked by Ron
  73. science

    A pig eats nuts,berries,fungi and insects.What type of consumer is a pig A)producer B)consumer C)omnivore D)decomposer

    asked by miki
  74. literary

    I tried to re-write the essay please check it for me again . Thank you Sra Antigone and Whale Rider In the play Antigone by Sophocles and movie whale rider directed by Caro. The two characters are Paikea and Antigone both has similarities in common. Both

    asked by manal
  75. math

    Tony is making flower arrangements. He is using 3 different kinds of flowers--roses, daisies, and tulips. Each arrangement will have the same number of each kind of flower. He figures that if he uses all the flowers, the greatest number of arrangements he

    asked by steve
  76. social studies

    How did Capitalism change during the Industrial Revolution?

    asked by Savanah
  77. Math

    solve 6/y+4=5/y-4

    asked by Abby
  78. physics

    A moving car has kinetic energy. If it speeds up until it is going four times faster than before, how much kinetic energy does it have in comparison? 1. The mass is needed. 2. The same 3. Sixteen times larger 4. Four times smaller 5. Four times larger 6.

    asked by lynn
  79. Chemistry

    Calculate the mass of sodium sulfate decahydrate need to make a 500ml solution that is .025m in sulfate anion?

    asked by Pam
  80. physics

    A 4.36 × 10−5 kg raindrop falls vertically at constant speed under the influence of gravity and air resistance. After the drop has fallen 88.1 m, what is the work done by gravity? The acceleration of gravity is 9.8 m/s2 . Answer in units of J

    asked by lynn
  81. physics

    you could produce a sample containing 2,400,000 free neutrons, what would it be 2658 seconds later? A) 300,000 neutrons, 2,100,000 protons, and 2,100,000 electrons. MY ANSWER B) 300,000 neutrons and 2,100,000 protons C) 300,000 neutrons, 2,100,000 protons,

    asked by Anonymous
  82. Physics

    A diver in Acapulco jumps off a 150 ft cliff. His forward motion is 10 feet per second. The base of the cliff at the waters edge extends 38 feet beyound the top edge of the cliff. Will the diver land in the water?

    asked by Clay
  83. Maths

    Calculate the volume and curved surface area of a cone 14cm in base diameter and 24cm high

    asked by Vivian
  84. Algebra 2 -Linear Programming

    Find the values of x and y that maximize or minimize the objective function. x+y < or equal to 8 2x+y < or equal to 10 x> or equal to 0, y > or equal to 0 A. (0,5) Maximum value is 100 B.(1,7) Maximum value is 220 C.(2,6) Maximum value is 280 D. (5,0)

    asked by LaH
  85. Geometry

    answer to a two column proof problem such as Given: angle 1 and angle 5 are congruent and angle 5 is congruent to angle 4 prove angle 3 is comgruent to angle 1

    asked by mea
  86. 7th grade Algebra

    4w-9(6-5w)=44;w=3 decide whether the given value is a solution of the equation if not find the solution

    asked by Maria
  87. Science

    Reggie has a sample of raw sugar made up of large particles and a sample of white sugar made up of much smaller particles. He dissolved 1 tsp. of each sample in 1 cup of water. Which dissolved fastest? a) Both dissolved at the same rate b) The white sugar

    asked by Regina ?????????
  88. physics

    A ball rolls off of a table with a speed of 2 m/s. The table is 1.2 m high. How long will it take to the ball to hit the ground?

    asked by kimberly
  89. Statisitcs

    Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends

    asked by Carmella
  90. physics!

    how much work is done by each force acting on vacuum cleaner as it is pulled horizontally 3 m at a constant speed by a force of 50 N at an angle of 30degrees above the horizontal?

    asked by kennedy
  91. umt

    2. A charge of -3.00 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.1 m). The charges on the circle are -4.0 µC at the position due north and +5.0 µC at the position due east. What is

    asked by roy
  92. business

    1. Choose a real or made up example of a company, and describe at least three variable costs the company has

    asked by anthony
  93. business communication

    You are writing to a reader who favors a different solution than the one you recommend. Which of the following is MOST likely to persuade the reader? A. Describe your reader's solution first, explain why it won't work, and then go on to describe your own

    asked by Stacey
  94. ENGLISH HW CHECK

    Choose the correct answer for the ALL CAP word 1. My father always COMPLAINS that my sister's boyfriend is lazy. Answer a. complains b. complain c. complained d. complaining 2. Uncle Frisbee, who BE as bald as a grapefruit, buys every new hair-growing

    asked by Anonymous
  95. science

    How many joules are taken in by a man who eats 4000 calories of food each day? What is this person's average thermal power output? 4000 x 4.186 =16 744Joules, but I don't understend second question, Thank you for helping me.

    asked by Debra
  96. maths

    write each of the following as trigonometric ratios of acute angles. (a)sin160 degrees (b)cos 310 degrees (c)tan 200 degrees

    asked by chrystabelle
  97. Pre-Algebra

    A movie projector is 6 ft away from the screen showing a rectangular picture that is 3 ft wide and 2 ft high. A. Suppose the projector is moved to 12 ft from the screen. What size will the picture be (width, height, and area)? I figured 6 wide, 4 high, 24

    asked by Colton
  98. physics

    A hollow rubber ball with a diameter of 5.57 cm and a mass of 38.9 g is cut in half to make a boat (in a bathtub) for American pennies made after 1982. The mass and volume of an American penny made after 1982 are 2.5 g and 0.36 cm3. How many pennies can be

    asked by maria
  99. Physics

    A 8800 kg railroad car is rolling at 2.4 m/s when a 3100 kg load of gravel is suddenly dropped in. What is the car's speed (in m/s) just after the gravel is loaded? how do I relate these, I am confused.

    asked by ...
  100. Calculus

    Find the point on the line 3 x + y - 5 =0 which is closest to the point ( -3, -3 ).

    asked by Anonymous
  101. Physics

    12. A baseball player throws a ball from left field toward home plate. Assume that you can neglect the effects of air resistance. At the instant the ball reaches its highest point, what is the direction of the ball's acceleration? A) up B) down C)

    asked by Crystal
  102. math

    mr jacob is 55 years old and tony is 7 years old. in how many years will mr. jacob be 4 times as old as tony?

    asked by TJ
  103. ART

    Thanks for the websites, I have a worksheet of a list of all the elements and principles, but i am still struggling as to which elements and which principles apply to this painting "Polly, Minou and Eon" by Will Barnet..any suggestions??

    asked by Mandy
  104. Science

    A golf ball is hit at ground level. The ball is observed to reach its maximum height above ground level 2.2 s after being hit. 1.3 s after reaching this maximum height, the ball is observed to barely clear a fence that is 780 ft from where it was hit. The

    asked by Jahn
  105. Physics

    The coefficient of static friction between the m = 2.95-kg crate and the 35.0° incline is 0.345. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline?

    asked by Lala
  106. physics

    A beautiful man with a large nose named Melvin lifts a 28.1 kg bucket from a well anddoes 4.24 kJ of work. The acceleration of gravity is 9.8 m/s2 . How deep is the well? Answer in units of m

    asked by lynn
  107. math

    farmer montague raises chicken and goats. she is not sure how many she of each animal. but she does know she has 22 animals all together. She also know that all together,her animals have 56feet. How many of each type animall does farmer montague have?

    asked by rhea
  108. physics!

    how much work is done by each force acting on vacuum cleaner as it is pulled horizontally 3 m at a constant speed by a force of 50 N at an angle of 30degrees above the horizontal?

    asked by kennedy
  109. Science

    Reggie has a sample of raw sugar made up of large particles and a sample of white sugar made up of much smaller particles. He dissolved 1 tsp. of each sample in 1 cup of water. Which dissolved fastest? a) Both dissolved at the same rate b) The white sugar

    asked by Regina PLEASE
  110. Science 6TH Grade

    Salim added 1 g of salt to each of four beakers filled with water. He stirred the water at different speeds, and recorded how long it took for the salt to dissolved. Stirring - Time (sec) No stirring - 25 Slow stirring - 18 Medium stirring - 10 Fast

    asked by Mary PLEASEEEEE
  111. chemistry

    Calculate the normal freezing point of an aqueous solution containing 30% w/w ethylene glycol. Thanks

    asked by el
  112. Everst

    Suppose you are a stock market analyst specializing in the stocks of theme parks, and you are examining Disneyland’s stock. The Wall Street Journal reports that tourism has slowed down in the United States. At Six Flags Magic Mountain in Valencia,

    asked by Beverly
  113. physics

    A 1.20- block of wood sits at the edge of a table, 0.720 above the floor. A 1.20×10−2- bullet moving horizontally with a speed of 750 embeds itself within the block. What horizontal distance does the block cover before hitting the ground?

    asked by chris
  114. Math

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

    asked by Jen
  115. math

    matt rides his bike between 19 and 22 blocks each day. what would be a reasonable estimate of how much he rides in a week.

    asked by michael
  116. physics

    a force of 20n applied parallel to the surface of a horizontal table is just sufficient to make a block of mass 4.kg move on the table caculate thd coefficient of friction between the block and the table

    asked by fawaz
  117. physics

    A 16 kg block slides down a frictionless slope which is at angle θ = 20◦. Starting from rest,the time to slide down is t = 1.88 s.The acceleration of gravity is 9.8 m/s2.

    asked by Anonymous
  118. Math, Please Help!!!

    How can the right equation be converted into the answer on the left? (sec^4x)(tan^2x)=(tan^2x + tan^4x)sec^2x

    asked by Misty
  119. dictation

    could you please hold the door open for me?

    asked by sher
  120. statistics

    Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends

    asked by Marcus
  121. law office management

    when one person has the power and authority to make all decisions for the firm it is known as an _______ type of management. a. management by committee b. autocratic c. management by stakeholders d. executive committee im confused between A and D

    asked by Nile
  122. Physics

    A steel ball is luanched on a table to be 4.0 m/s. If the tabletop is 1.5m tall then where should you place a 20cm tall can to catch the ball where it lands?

    asked by Achlys
  123. math

    set S contains all integers from 100 to 200, inclusive. if x is a number in S that is multiple of both 6 and 10, what is one possible value of x?

    asked by reena
  124. Chemistry

    Why would the percent recovery obtained over 100% in a an experiment dealing with the cyclic chemical reactions of copper?

    asked by R
  125. math

    Bill buys x items at $3 each, y items at $5 each, and z items at 6 each. If x,y,and z are each multiple of 5 and the total price of the items costing $3 and $5 is 55, which of the following could be the total price of all x +y+z items?

    asked by reena
  126. chemistry

    what is the geometry around the carbon in dichloromethane?

    asked by dominique
  127. Physics

    A place kicker must kick a football from a point 37.1 m from a goal. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked the ball leaves the ground with a speed of 19.8 m/s at an angle of 53° to the horizontal. (a)

    asked by shmza
  128. Int. Algebra

    The spread of oil leaking from a tanker after t hours is in the shape of a circle with radius r(t) = 200 square root t+3, - 600 (in feet). A. Find the time it takes for the leak to spread at a radius of 1800ft. B. Find the area A of the oil leak as a

    asked by Mv
  129. Science

    It’s OK to say that your brain is solar powered, because A) mitochondria in plant cells convert solar power to the chemical power that is used to run your brain. B) cellular respiration is powered by sunlight. C) the antenna complex in chloroplasts acts

    asked by Frank
  130. Physics

    Consider a frictionless track as shown in the figure below. A block of mass m1 = 5.75 kg is released from A. It makes a head on elastic collision at B with a block of mass m2 = 8.00 kg that is initially at rest. Calculate the maximum height to which m1

    asked by Ellen
  131. Physics

    An airliner is at point A and is trying to fly to point B, which is 1000 km due North of point A. The pilot of the airliner wishes to reach point B in 2.5 hr. A wind is blowing from the Northwest (45 degrees) at 100 km/hr. In what direction and at what

    asked by Eliyahna
  132. computer sciece

    #include #include int main() { int num[100]={0}; int i,n=0; for(i=0; num[i] != EOF ; i++,n++) { scanf("%d",&num[i]); } printf("%d\n", i); while(i=0;i

    asked by Tracy
  133. French

    thank you so much for taking so much time into helping me have a perfect french essay! I have done the corrections you have told me to do. If i have left something out please state. Could you please go through the essay and make sure the lanuage, grammar

    asked by Ruth
  134. Chemistry

    For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass

    asked by Hannah
  135. AP US History

    Compare and Contrast the effectiveness of Washington's and Adams' presidencies in obeying and promoting the Constitution during their administrations. So far I have: The main compromises made when writing and ratifying the Constitution were the

    asked by Lauren
  136. Physics

    An airliner is at point A and is trying to fly to point B, which is 1000 km due North of point A. The pilot of the airliner wishes to reach point B in 2.5 hr. A wind is blowing from the Northwest (45 degrees) at 100 km/hr. In what direction and at what

    asked by Eliyahna
  137. Math-PLEASE. HELP.

    Write an equation for the linear function f with the given values. f(4)=-8, f(-3)=1

    asked by Izzy
  138. English

    Can someone edit this essay? Topic is "if given funding for a small engineering project, what would you do?" 250 word limit Millions of Americans purchase bottled water everyday simply because they don't like the taste of their own tap water. While most

    asked by Mathew
  139. English language

    English is not my first language and someone just told me: 'my mom was asking about you', what does it mean and what people usually reply to that sort of statement? Thanks

    asked by Viola
  140. Statistics

    Assume you want to estimate with the proportion of students who commute less than 5 miles to work within 2%, what sample size would you need?

    asked by Carmella
  141. physics

    A 170 kg physics professor has fallen into the Grand Canyon. Luckily, he managed to grab a branch and is now hanging 53 m below the rim. A student (majoring in linguistics and physics) decides to perform a rescue/experiment using a nearby horse. After

    asked by lynn
  142. Managerial finance

    After considering all the relevant factors, would you recommend a zero coupon issue or a regular coupon issue? Why? Would you recommend an ordinary call feature or a make-whole call-feature? Why?

    asked by kim
  143. Physical Science Concepts

    Atutomobile l-collecg stations a thin metal wire sticks up from the road and makes contract with cars before they reach the toil collector. What is the pupose of this wire?

    asked by christopher
  144. Math 010

    if carlos has $45 and spends $x for lunch, how much money does he have left ?

    asked by Anthony
  145. Reimbursement Methodologies

    You work in the hospital information Management, part of my job to assist medical resident with completing the record documentation.

    asked by Lennox
  146. math

    Explain how to get the variable alone in each equation..x + 13 = 25 x + 13 - 13 = 25 - 13

    asked by andy
  147. Did i do this right??? STATS

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

    asked by Jen
  148. Language

    Can someone help me with the following analogy? colloquy:loquacious a)somnambulism:ambulatory b)plateau:flat c)octahedron:eight d)toponym:noun

    asked by Carson
  149. Calc

    How do you do the derivative of an inverse trig function? arcsin (sqrt2/2)??

    asked by Hannah
  150. maths

    find the general solution of the following first order differential equation. dx/d(theta)=(xtan(theta))-(cos(theta))

    asked by Markus
  151. Economics

    assume that gross national debt is equal to $3million and the federal government then runs a deficit of $300 billion. What is the new level of gross national debt

    asked by Karen
  152. chemistry

    what is the volume in liters of 3.0 moles CH4, at 26C and 1.48atm?

    asked by h
  153. chemistry

    a 0.296g of CO2 has a volume of 565ml and a pressure of 425mmHG, what is the temperature??????

    asked by michelle
  154. criminal law

    conspiracy is an ______ crime a. accessory after the fact b. general intent c. specific intent d. structure is it B

    asked by john
  155. English

    I'm terribly sorry. I included that sentence again by mistake. Thank you very much for your corrections!

    asked by Henry2
  156. physics

    a force of 20n applied parallel to the surface of a horizontal table is just sufficient to make a block of mass 4.kg move on the table caculate thd coefficient of friction between the block and the table

    asked by fawaz
  157. criminal law

    typically the chronological, ______ of a child is used to determine criminal responsibility rather than mental capacity. a. age b. well being c. health d. sanity im confused between A and D

    asked by john
  158. math

    Aldo invested his savings in two investment funds. The $24, 000that he invested in Fund A returned a 1% profit. The amount that he invested in Fund B returned a 5% profit. How much did he invest in Fund B, if both funds together returned a 2% profit?

    asked by George
  159. math

    if the ratio of rose bushes to trees in the yard is 3 to 1. Which of these shows possible numbers of roses to trees in the yard.

    asked by casey
  160. CHEMISTRY

    at 1500 celcius the system 2NON2+O2 was allowed to come to equilibrium. the equilibrium concentrations were NO=0.00035M N2=0.040M O2=0.040M What is the value of Kc for the system at this temperature? The answer they give is 1.3 x10^4 Im getting 2.2 x10^-1

    asked by HELPP ME
  161. MATH

    FACTOR COMPLETELY c^3 + 8

    asked by Cornelius
  162. Science (urgent)

    Hi I really need to know this I've asked a couple times but haven't gotten an answer yet. In the reaction X + Y ® Z, Z is the A) substrate. B) product. C) enzyme. D) carbon molecule.

    asked by Jake
  163. bio

    what will happen to a red blood cell place in a solution of 99.3% water and 0.7% salt?

    asked by alex
  164. Physics - Energy

    Two comets, each of mass 6500 kg and traveling 88 m/s in opposite directions, collide head-on and come to rest. How much energy is produced in this collision? Thank you!

    asked by Alex
  165. French

    I am posting just the CORRECTIONS! Can the corrections be put immediately after the error as you said, thanks. When you use (...) and etc do you mean the rest of the sentence is right? Could you please give an example of where a semi-colon could be used in

    asked by Ruth
  166. math

    Which of the following can be the average(arithmetic mean ) of four consecutive positive even integers?

    asked by reena
  167. physics

    1. A small railroad engine is able to exert 8•105 N of pulling force. The coefficient of friction for steel wheels on steel rail is 0.4. Each rail car has the approximate mass of 20 tons How many cars can this engine pull on a level track?

    asked by hary
  168. Algebra

    The average cost per drink can be found by dividing the total cost (.25x+250=total cost) by the number of drinks sold (x). Write an equation that shows the average cost per drink.

    asked by Kelly
  169. Calculus

    I know I posted this problem earlier but I don't think it will be seen anymore since it's almost at the end of the page: Find the total mass of the triangular region with coordinates (-1,0),(0,4),and (1,0). All lengths are in centimeters, and the density

    asked by Caroline
  170. physics

    Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 4843 kg), which is made of steel (ρ = 7850 kg/m3). In typical comic-book fashion, they decide to raise the yacht (which is now on the bottom of a lake) by filling it with ping-pong

    asked by maria
  171. pre cal

    how do you solve f(x)= G(X) and find the points of intersection of the graphs of the 2 functions f(x)= x^2 + 5x+ 13 g(x)= 19

    asked by xyz
  172. Physics help please

    A 13.2 gm bullet is fired into a 12.0 kg wood block that is at rest on a wood table. The block, with the embedded bullet, slides 5.00 cm across the table. Assuming that the local acceleration due to gravity is 9.80m/s2 and that the coefficient of kinetic

    asked by Iamdumb
  173. pre cal

    how do you solve f(x)= G(X) and find the points of intersection of the graphs of the 2 functions f(x)= x^2 + 5x+ 13 g(x)= 19

    asked by xyz
  174. Algebra

    Add. Simplify if possible. 3/v+8/v^2

    asked by Kelly
  175. philosophy

    Truth tables can determine which of the following? (Points : 1) If an argument is valid If an argument is sound X If a sentence is valid All of the above

    asked by bean
  176. Mathematics

    How do i post the answer hence i don't the answer .In geometry.an equalateral triangle has the length of it's sides given as (y + 3)cm, (2y - x)cm and (4x + 3). Find the (a) value of x and y, (b) perimeter of the triangle (c) altitude of the triangle to

    asked by Anonymous
  177. physics

    A ball of radius 0.2m rolls along a horizontal table top with a constant linear speed of 3.04 m/s. The ball rolls off the edge and falls a vertical distance of 2.02m before hitting the floor. What is the angular displacement of the ball while it is in the

    asked by Sami
  178. Math1239

    x=4 cost, y= 2 sint on the interval 0 ≤ t ≤ 2π what is the Cartesian equation? nd describe the graph giving the (x,y) co-ordinates ... stating the initial point and the terminal point. ? i found the cartesian equation as y= square root of 4-x^2/4 plz

    asked by Mark J
  179. Maths Grade 8

    m^2-m-6 m^2 _________ x ______ m^2-9 m^2+2m

    asked by Aldwin
  180. maths

    help find the general solution of the following first order differential equation. t*(dy/dt) = (-y/t) + ((exp(1/t)/t^3) could you show steps in working to sol.

    asked by ryan j
  181. physics

    Tigger likes to play golf. For this particular shot, the distance between the spine and the clubhead (aka the distance of the golfclub + arm) is 1.6 m. When the clubhead hits the ball, it is travelling at 50 m/s. How fast is the body and the club rotating?

    asked by Tyler
  182. buissness math

    Determine the total in Dexter's account after the second month using the information below. Dexter Banler's account Principal: $1,604 Rate: 10% compound Length of period: month $3208.00 $1764.40 $1630.85 3. Ray Sugar's account Principal: $1,700 Rate: 9.5%

    asked by morgan
  183. Physics

    A baseball player throws a ball from left field toward home plate. Assume that you can neglect the effects of air resistance. At the instant the ball reaches its highest point, what is the direction of the ball's velocity? A) up B) down C) horizontal I

    asked by Crystal
  184. English

    Could anyone suggest a food that could go in Room 101. Room 101 is a room where you put all the foods you hate. I have been assigned to write a persuasive text on why i want this food to be put in room 101 and why. Kindly suggest a food that people

    asked by Ruth
  185. college math

    Aging in the United States In 2050, about 1 over 5 of the population will be aged 65 or over and about 1 over 20 of the population will be aged 85 or over. Estimate the fraction of the population that will be between the ages of 65 and 85 in 2050. (Source:

    asked by tony
  186. math

    if you use $63.00 divided by 9 to estimate $62.59 divided by 9 is $7.00 greater than or less than the exact number? explain

    asked by emma
  187. Biology 110

    Jane is 28 yrs old dx with MS. Explain to her 10yrs old, what MS is, why, how, and when did it happen?

    asked by Susan Yi
  188. Just really need some help

    Acela’s aging parents own a house and a car. Acela is currently living in the house with her parents. Her brother and sister are married and live elsewhere. Why is it important for Acela’s parents to have wills? What are some possible consequences of

    asked by Bee
  189. punctuation

    Please show me the correct way to punctuate the following or did I do it correctly: You can't pull my strings. I'm breaking away starting today.

    asked by Mattie
  190. physics

    A 1.2 kg ball is rolling down a friction free ramp at 21 m/s just before it hits level ground. How high was the ball when it started rolling?

    asked by Lisa
  191. calculus

    what is the maximum distance between f and g when f(x)=1/2x^2 and g(x)=1/16x^4-1/2x^2 on closed interval [0,4]

    asked by nicole
  192. Language Arts

    Please explain the power of language

    asked by Damien
  193. Statistics

    Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 30 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends

    asked by Carmella
  194. physics

    A 4.36 × 10−5 kg raindrop falls vertically at constant speed under the influence of gravity and air resistance. After the drop has fallen 88.1 m, what is the work done by gravity? The acceleration of gravity is 9.8 m/s2 . Answer in units of J What is

    asked by lynn
  195. Math

    what does 4 - 6 equal?

    asked by Bob
  196. SOCIAL STUDIES

    What state has a southwestern border with Colorado and an eastern border with Iowa?

    asked by Jason
  197. Chemistry

    Hi, This may sound like a dumb question but I am stuck. I have worked out everything from a titration and I am now trying to work out my overall % purity. It is 86.0% +/- 1.3% What will 86.0% + 1.3% be and what will 86.0% - 1.3% be?

    asked by Paula
  198. math

    Take the product of twice ten and one half of my number. Divide it by four. You will get 25. What is my number?

    asked by mlm
  199. math

    i am a farmer he has $100 and he has to buy one hundred animals there is a chicken for $0.50 a goat for 3.50 and a sheep for $5 how many of each animal does he have to buy?

    asked by retyut243
  200. Science

    Salim added 1 g of salt to each of four beakers filled with water. He stirred the water at different speeds, and recorded how long it took for the salt to dissolved. Stirring - Time (sec) No stirring - 25 Slow stirring - 18 Medium stirring - 10 Fast

    asked by Mary Helpppppp
  201. Physics

    When U238 decays into Pb206 via alpha and beta decay, what are the byproducts of the decay? A) 8 alpha particles and 6 beta rays. B) 8 alpha particles, 6 electrons, 6 neutrinos, and energy. MY ANSWER . C) 16 alpha particles, 16 beta rays, and energy. D) 16

    asked by Anonymous
  202. MATH 7th GRADE

    Would someone please be kind enough to check the answers for these problems?Last round for tonight. Thank you. 1. 3/16 - 1/8 = 1/16 2. 151/4 -11 5/8 = 3 5/8 3. 2 x 3/7 = 6/7 4. 1/2 x 7/8 = 7/16 5. 1 3/8 2 1/2 = 3/7/16 6. 1/2 divided by 2/3 = 3/4 7. 8 1/4

    asked by PLEASE HELP
  203. math

    i need the answer to this mathamatical question (3x6)+12/2-8

    asked by BEV
  204. maths

    find the general solution of the following first order differential equation. t*(dy/dt) = (-y/t) + ((exp(1/t)/t^3) could you show steps in working to solution.

    asked by ricky
  205. math

    a steamboat goes 24 miles upstream, the trip takes six hours. the water flows at three miles per hour. what is the speed of the boat in still water?

    asked by iris
  206. Math algebra

    how do you do this by using the FOIL method? 1. 3x^2 + 22x + 7= 2. 2x^2 + 5x - 12= 3. x^2 - 11x + 28= thank you!

    asked by Sara
  207. Psychology

    It may be difficult to sooth a crying baby who needs to be fed and changed with Cuddling and toys. The strength of the physical needs in this situation support: a.secondary drive approach theory b.the incentive approach to motivation c.Maslow’s hierarch

    asked by Sammi
  208. Psychology

    The research of Solomon Asch revealed that: a.participants in the study conformed to the erroneous group response in one-half of the trails. b.all participants in the study conformed to the erroneous group response in each trail. c.participants in the

    asked by Sammi
  209. Math Algebra 1

    X | Y 1 | 1 2 | 3 3 | 6 4 | 10 7 | 28 8 | 55 n | ? Find expression that works for all steps using the variable x!?

    asked by Eden
  210. science

    What become of the electric energy provided in electrolysis? In what device is this energy transformation reversed?

    asked by Sheryl
  211. Math

    An equalateral triangle has the length of it's sides given as (y+3)cm, (2y-x)cm and (4x +3)cm.Find (a) the value of x and y (b)perimeter of the triangle (c) altitude of the triangle to the nearest whole number

    asked by Joseph
  212. calculus

    Find all values of a such that y=a/(x−9) and y=x^2−18x+81 intersect at right angles? please how the steps :)

    asked by mehak
  213. physics

    An open-topped tank completely filled with water has a release valve near its bottom. The valve is 1.63 m below the water surface. Water is released from the valve to power a turbine, which generates electricity. The area of the top of the tank, AT, is a =

    asked by maria
  214. physics

    Add the following vectors 1.50m{North 45 degrees West}, 10m{South30degreesEast}, 25Meters[South60mWest] pls help. explain to me how to solve it

    asked by ted
  215. ART

    I need some help determining the elements and principles of an art piece called "Polly, Minou and Eon" by Will Barnet

    asked by Mandy
  216. maths

    please help find the general solution of the following first order differential equation. dx/dt = tx + 6t(exp)-t^2 pls show working

    asked by micheal
  217. MATH 101

    How do you solve system of equation problem. example x+3y=32 -3x+2y+3 and x+y=6 x-y=-9

    asked by Ann
  218. MAth grade 8

    y^2-4y+4/2-6y x 2y+4/3y^2-12

    asked by Aldwin
  219. Math

    If you reduce 5 _ 10 what fraction is it reduced to?

    asked by Himey
  220. chemistry

    upper atmosphere chloromethane can be decomposed by light according to the reaction:CH3Cl -> CH3(g) + Cl(g)The energy required for this reaction is 428 kJ mol–1. If each molecule of chloromethane is decomposed by one photon, what is the maximum

    asked by el
  221. physics

    an 85 mass has an acceleration of 5.5 m/s2 what is the net force applied

    asked by Anonymous
  222. just a question

    Geraldo works full-time to take care of his family. His wife, Marina, stays home to take care of their two young children. What kind of insurance coverage should Geraldo and Marina have for their family? Explain why.

    asked by Bee
  223. Biology

    In guinea pigs, gene B is for black, b is for white the heterozygote is a mixture, called agouti. ( sex linked and non dominant) , a litter consists of 5 agouti females and 6 black males , if the parents of this litter had more offspring , what other

    asked by Melissa
  224. science

    differentiate between helpful and harmful bacteria

    asked by abdulla
  225. math

    john and mary are working on a job together. if john does it alone, it will take him seven days, while mary can do it alone in five days. how long will it take them to do it together?

    asked by iris
  226. MAth

    Solve 2/wz^2+9/W^2z Help

    asked by KATIE A
  227. Math

    9+5/9=-6 How do I solve?

    asked by KATIE A
  228. MATH

    Find LCM t^3+8t^2+16,t^2-8t

    asked by KATIE A
  229. physics

    A parachutist with a camera, both descending at a speed of 13 m/s, releases the camera at an altitude of 57.8 m. What is the magitude of the velocity of the camera just before it hits the ground? The acceleration of gravity is 9.8 m/s 2 and air friction is

    asked by asdfghjkl;
  230. Bio 110

    Jane is 28 yrs old dx with MS. Explain to her 10yrs old, what MS is, why, how, and when did it happen?

    asked by Susan Yi
  231. Bio 110

    Jane is 28 yrs old dx with MS. Explain to her 10yrs old, what MS is, why, how, and when did it happen?

    asked by Susan Yi
  232. philosophy

    In the conditional "P ¨ Q," "Q is a sufficient condition for Q. sufficient condition for P. necessary condition for P. X necessary condition for Q.

    asked by bean
  233. geometry

    A rectangular playing field is 3 times as long as it is wide. its area is 2500 metres squared. find the cost of fencing in the field if the fencing costs €15 per metre

    asked by Anonymous
  234. physics

    What is the acceleration for the turtle moving with constant velocity of 5m/s to tghe right

    asked by Dia
  235. Health

    Is Hepatitis A caused by bacteria? I don't think so.. Thanks -MC

    asked by mysterychicken
  236. physics

    A 1.2 kg ball is rolling down a friction free ramp at 21 m/s just before it hits level ground. How high was the ball when it started rolling?

    asked by Lisa
  237. English

    I mispelt a word in my previous post. Thank you. 1) This can be a drawback not so much to the wearer but as to those around him. 2) Who is a "mill master"? 3) During the day of Peterloo, which alludes to the Battle of Waterloo, a man had his nose cut from

    asked by Henry2
  238. math

    pls. factor x^2+2+(1/x^2)

    asked by justme
  239. Statistics

    I am not sure if I can compare the measurments fro the above study with the standard normal distribution. I feel like I do not have enough data. Am I right or is it the standard normal distribution ? Medication at the end of life During the last month of

    asked by AAS13
  240. physics

    Note: Coal and oil are non-renewable re- sources. A friend says the energy of oil and coal is actually a form of solar energy. Is your friend correct, or mistaken? 1.Mistaken; the energy is actually nuclear. 2. Correct; these materials are the result of

    asked by lynn
  241. Algebra

    If 250 specialty coffee drinks were sold at the bake sale, what would the average cost per drink be given the equation .25x+250/x?

    asked by Kelly
  242. organic chemistry

    what would be the result if we heated a mixture of dicholoromethane and naphalene to 60 degrees celcius, collected distillate until no further material is distilled, and then cooled the flask back to room temperature?

    asked by Ashley
  243. Math

    Please help me with this problem 3(square root of 144 -6)

    asked by Lisa
  244. English

    Could you please check these sentences? Thank you. 1) If I'm not wrong (mistaken?), the deadline for a Comenius partnership is 2nd February. 2) When do you think of holding our first meeting to agree on a common theme (for our Comenius project? 3) The

    asked by Henry2
  245. English

    Can you suggest to me a site where I can listen to and read the American anthem? Thank you.

    asked by Henry2
  246. Science

    what is true about the number of moles of hydroxide ions and moles of hydrogen ions at the equivalence point? How can you find the moles of hydroxide ions at the equivalence point?

    asked by Noorah
  247. chemistry

    calculate the molarities of each of the ions in a solution prepared by diluting 78mL of 4.5M Ca(ClO3)2 (aq) to 156mL with water. I don't understand how to answer this question.

    asked by amy
  248. Chemistry

    give a formula you can use to calculate the number of moles of H+ ions used at the equivalence point.

    asked by Emma
  249. organic chemistry

    what would be the result if we heated a mixture of dicholoromethane and naphalene to 60 degrees celcius, collected distillate until no further material is distilled, and then cooled the flask back to room temperature?

    asked by Ashley
  250. algebra

    formula= P(x)=.1x^2+50x-300 where x is number sold what is ans. if P(100)=.1(100)^2+50(50)-300

    asked by alfonso
  251. Ratios - measurements

    I need to find the ratio of the longest side to the length of the shortest side, then write each fraction in lowest terms. Both questions have more than 3 measurements: 1) 25 km to 24.5 km to 5 km 2) 6 3/4 ft. to 5 3/4 ft. to 3 1/4 ft. to 1 3/4 ft to 1 1/2

    asked by Alex L.
  252. algebra

    using the letters in the word "MAGIC,", find the number of permutations that can be formed using 3 letters at a time A. 20 , B. 30 , C. 40, D. 60

    asked by tracy
  253. Calculus

    What is the derivative of -3x((x+1)^1/2)

    asked by Alexis
  254. MAT 7th GRADE

    Please help. Will someone please check the answer to these problems. Thank you 1. -14 x-3 = 42 2. -24 -15 = 39 3. -48 divided by 12 = -4 4. -150 divied by -30 = -5 5. 3/4 + 5/12 = 1 1/6 6. 14 1/2 + 3 7/8 = 18 5/8

    asked by PLEASE HELP
  255. English

    I forgot to add the following things. Thank you very much. 1) Coco Chanel rose to become ( I need a synonym) one of the foremost designers in France. 2) She was probably the most influential female designer ever. (What is the meaning of "ever" here?) 3)

    asked by Henry2
  256. Chem(PLEASE CAN SOMEONE EXPLAIN HOW I CAN SOLVE)

    calculate the molarities of each of the ions in a solution prepared by diluting 78mL of 4.5M Ca(ClO3)2 (aq) to 156mL with water. I don't understand how to answer this question.

    asked by amy
  257. math

    A manager schedules employees to cover evening shifts. There are 9 shifts on Monday, 11 on Tuesday, 13 on Wednesday, 13 on Thursday, 15 on Friday, 16 on Saturday, and 12 on Sunday. If each employee can work an average of 4.5 shifts, how many employees

    asked by taneisha
  258. English

    I left out 2 doubts. Thank you. I wrote in a notebook OR on a notebook. I wrote on a fooscap sheet (is it possible?)

    asked by Henry2
  259. PHYSICS HELP

    what is the minimum amount of energy required to accelerate horizontally a 3.0g bullet from rest to a speed of 40.0 m/s?

    asked by emilyy
  260. Math

    Jen & Jakie are 33miles apart on a calm lake paddling toward each other. Jen paddles at 4miles per hours, while Jakie paddles at 7miles per hour. How long will it take them to meet?

    asked by Kara
  261. ecology

    what are the six steps of the very serious and common water pollution problem of artificial eutrophication

    asked by danielle
  262. Social Studies

    In what building does the President of the United States serve?

    asked by Jason
  263. U.S. History

    The student will describe the causes events and results of the French Indian war. The student will explain the economic relationship between the colonists and Britian. :( :( :( :( :( :( :( :( :( :( Can anyone help me? And, please don't tell me to go to

    asked by John Jacob Jingle Heimer Smith
  264. Psychology

    Teenage mothers who are accustomed to existing on hamburgers, French fries, and cokes need to consider the nutritional needs of the child. Research has shown that a poor diet can: a. restrict the development of eye and hair color. b. produce prenatal

    asked by Sammi
  265. mathematics

    find the general solution of the following first order differential equation. u(t): du/dt =(u/(t+2t)) pls show all working

    asked by Zane
  266. U.S History

    describe each battle, including its outcome: 1) Long Island 2) Trenton/Princeton thanks

    asked by Jackson
  267. human services

    how success wisconsin human services in meeting the needs o its demographic group

    asked by sylvia
  268. french

    My homework task is to write an introductory email to my french exchange partener about:yourself, how you get on with your family, what your views on marriage are, a descrition of your best friend(s), what you did yesterday and what your plans for the

    asked by Ellie
  269. physics

    if a=Ω² times r with what is equal the Ω?

    asked by Please Help
  270. maths (complex numbers)

    if b is a real number satisfying b^4 + 1/(b^4) = 6, find the value of :- (b + i/b)^16 where i = sqrt of -1

    asked by ...........
  271. criminal law

    the law will not punish an ______ act a. ignorant b. reckless c. involuntary d. premeditated i think its C

    asked by john
  272. organic chemistry

    what would be the result if we heated a mixture of dicholoromethane and naphalene to 60 degrees celcius, collected distillate until no further material is distilled, and then cooled the flask back to room temperature?

    asked by Ashley
  273. operating a car

    The sticker price on a new car includes: A.The final selling price of the vehicle. B.an extended warranty. C.everything you need to know about the vehicle. D.the retail price of everything that comes with that particular vehicle. i got D

    asked by Ciara
  274. calculus

    what is the vertical asymptote and horizontal asymptote of f(x) =1/4x^4-(3/2)x^(1/2)

    asked by joshua
  275. cj

    what is the sum of 756 and 249?

    asked by joshua
  276. maths

    find the general solution of the following first order differential equation. dx/dt = t*x + 6*t(exp)-t^2 pls show working

    asked by micheal
  277. physics

    My question is what would be the constant in a basketball ofensive rebound experiment? My science q is do the amount of offensive rebounds decide whether or not a basketball will win or loose the game? can you help/

    asked by Autumn
  278. math

    If a quarter circle is placed on a square target and the radius of the quarter circle is the same as the length of a side of the square, what is the probability that a dart that hits the square does not hit the quarter circle

    asked by Nikki
  279. French

    Hi Sra, Concerning the French text I don't know how to rewrite the text with all the corrections and English I want to say without it being confusing, could you please suggest a way?

    asked by Ruth
  280. mat

    The functions f and g for x lesser or equal -4, but x greater or equal 6. and g(x)=|f(x)|, what could be the value if f(-3)?

    asked by reena
  281. logical approach towards math

    Use only 4'4's and only 4'4' along with any mathematical operators to make a total of 2348.

    asked by mathmania
  282. algebra

    twenty times the cost of a record, increased by eighty-nine cents

    asked by amanda
  283. math

    there were 19 hamburgurgers fo nine people on a picnic. how many whole hamburgers were there for each person if they were divided equally?

    asked by iris
  284. science

    Find the mass of 30 mol of sulfuric acid, H2SO4

    asked by Sheryl
  285. Psychology

    disadvantage of group intelligence tests include that a. all test taker must wait until all registered individuals arrive b. proctors are often inconsistent and allow some test takers a longer time to respond or to take testing breaks c. some test taker

    asked by Sammi
  286. Language

    I have one more question. I think the author of this book made a mistake on the next analogy. Take a look and see if you agree. Platyhelminthes:platypus a)plateau:platitude b)worm:marsupial c)mammal:science d)crystalline:canine I think the author

    asked by Carson
  287. math

    peter took a 1,500 mile trip in 5 days. each day, he drove 30 miles more than the day before. how many miles did he cover on the first day?

    asked by iris
  288. organic chemistry

    what would be the result if we heated a mixture of dicholoromethane and naphalene to 60 degrees celcius, collected distillate until no further material is distilled, and then cooled the flask back to room temperature?

    asked by Ashley
  289. nursing

    bioterrorism and how might you prepare for its effects?

    asked by maria
  290. real estate law

    A tenancy at ______ may be terminated at any time by either party. a. leisure b. option c. necessity d. will is it A

    asked by Julie
  291. English check my answer

    Complete the following sentence with the best possible answer. 1. Abraham Lincoln warned us that "America will never be destroyed from the outside. If we falter and lose our freedoms, it a. will be because we destroyed ourselves." b. be because we

    asked by Anonymous
  292. math

    what would one half of a piece of fruit represent

    asked by Anonymous
  293. math

    If you walk 6.2 miles in 2 hours- what is your average speed in meters per minutes? I just want to make sure that I am setting this up right... thank you.

    asked by karen
  294. Physical Science

    What becomes of the electric energy provided in electrolysis? In what device is this energy transformation reversed?

    asked by chris
  295. curriculum development project

    Im still waiting on some help with the 10 domains and the activity plans in a thematic web

    asked by Maryann
  296. math

    If line l in the x-y plane contains the point (-2,1),(4,5) and (5,t), what is the value of t?

    asked by reena
  297. math

    set S contains all integers from 100 to 200. if x is a number in S that is multiple of both 6 and 10, what is one possible value of x?

    asked by reena
  298. real estate law

    Attorneys are required by state law to be: a. at least 26 years of age b. licensed c. living within 100 miles of the courthouse d. sworn to secrecy is it B

    asked by Nile
  299. social studies jumble

    what is levaygloerf unscrambled?

    asked by cesar Ibarra
  300. HW CHECK

    What is the verb in the following sentence? (only one answer) 1. Many people believe that the economy is not the worst problem in America. a. Many b. believe c. is d. is not e. in What is the subject in the following sentence? (may be one or more) 2. Her

    asked by Anonymous
  301. Math

    How high will a baseball that is thrown up into the air at 48 feet per second go if it starts its flight at a height 10 feet above the ground?

    asked by Bob
  302. organic chemistry

    How do I go from C-triple bond-C and end up with [(Z)-6 methylhept-2-enyl] benzene. I think the first step is adding NaNH3, but after that I'm lost.

    asked by redgy
  303. algebra II

    why is it that (5,8) cannot be an x-intercept?

    asked by verlita
  304. Biology

    My teacher asked me this question and I do not know the answer would you be able to tell me and why thank you large bodies loose a smaller percentage of heat to their surroundings than smaller bodies. Why?

    asked by Ellie
  305. Law

    if ______ on the internet are not adequately phrased the researcher can pull up thousands of sites that are unrelated to the topic at hand a. responses b. queries c. classifications d. codes i think its B is that right?

    asked by Sammi
  306. 4th grade math

    What is an expanded algorithm? Son doesn't know and didn't bring home his textbook, any ideas?

    asked by Sandy
  307. math

    how to factor x-d +(x-d)^2?

    asked by justme
  308. organic chemistry

    what would be the result if we heated a mixture of dicholoromethane and naphalene to 60 degrees celcius, collected distillate until no further material is distilled, and then cooled the flask back to room temperature?

    asked by Ashley
  309. social studies

    Philip 2 of Spain called the Englishmen who attacked and raided his ships _______ ______.

    asked by stephanie
  310. spanish

    How do you respond to necesitas la tienda y el saco de dormir in spanish

    asked by Mia
  311. english

    Im writing a argument essay about PETA and I cant seem to come up with a thesis…..I need help plz.

    asked by v
  312. chemistry

    is this correct? making sure I did this right CH3CH2CH2CH2-Br ans: 1-bromobutane

    asked by dominique
  313. maths

    find the general solution of the following first order differential equation. u(t): du/dt = u /t+2t pls show all working

    asked by Zane
  314. math

    what is the perimeter of triangle 8746

    asked by jackie
  315. Chemistry

    If you need any extra information please ask How could someone have calculated the dilution of the HCL from 20.0 cm^3 to 250 cm^3?

    asked by ?
  316. SS

    What are the 3 most visited "natural attractions" in the U.S.?

    asked by Justin
  317. math

    Bill buys x items at $3 each, y items at $5 each, and z items at 6 each. If x,y,and z are each multiple of 5 and the total price of the items costing $3 and $5 is 55, which of the following could be the total price of all x +y+z items? a. 66 b. 80 c. 95 d.

    asked by reena
  318. Mathematics

    find the general solution of the following first order differential equation. dx/d(theta)=(xtan(theta))-(cos(theta)) show working

    asked by markus
  319. biology

    Name the 4 factors that control the amount and rate of gas exchange.

    asked by Kim K
  320. trig

    Find another angle theta between 0 and 2pi that has the same cosine as 3pi/14

    asked by Anonymous
  321. English

    Could you please check this sentence I need to include in a letter? 1) Thank you very much for your last e-mail. Unfortunately, I couldn't read the document attached to it. 2) Actually, it was blank. Can you post (send) it to me again (once more, another

    asked by Henry2
  322. biology

    Jim has been stung by 35 bees and is going into anaphylactic shock. How is this happening; why is it happening; what can I do to help?

    asked by Kim ki
  323. math

    i posted this yesterday and never received a answer i do really neeed this help need step by step on how you get the answer Aging in the United States In 2050, about of the population will be aged 65 or over and about 1 over 20 of the population will be

    asked by tony
  324. English

    Thank you. I have a few doubts on a summary I made. 1)A set of apparel items is the same as a set of clothing items? 2) She caused something of a scandal by (for is wrong?) having love affairs with wealthy men. 3) Versace used to give only an ambiguous

    asked by Henry2
  325. english

    Which fits better in these sentences and why? Who/Whom painted that big mural in the post office. Do you know who/whom the secretary of state is?

    asked by jamie
  326. biology

    Jane is 28 yrs old dx with MS. Explain to her 10yrs old, what MS is, why, how, and when did it happen?

    asked by sara may
  327. socialstudies

    2.) "Without our two great political parties cutting across economic and geographic interests, democracy as we know it could never have been made to function." The author of this statement probably meant to suggest that

    asked by Anonymous
  328. English essay, could I have someone proofread it?

    The title states it. Please be gentle. The day started off pretty normal, well, before I was out rocking out to music, besides the fact that we had all stayed in a house with nothing but an old Dean ‘’Z’’ guitar and an Xbox 360 system. We went to

    asked by Allyson
  329. Problem Solving Math

    If a circuit has a 3.9k resistor and a 5F capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum current flow in the circuit is 1.5mA.

    asked by Clayton
  330. biology 110

    name 4 functions of the nose.

    asked by mike chi
  331. buissness math

    Determine the amount of interest charged on S. Carter's account during the second month. S. Carter's account Principal: $1,604 Rate: 10% compound Length of period: month Second month's interest: _________ $13.48 $160.40 $16.04

    asked by morgan
  332. English

    Could you please check these few sentences for me, please? Thanks 1) He is ambitious and thirsty for power. He turns into a murderous tyrant as a result of his ambition. 2) A vote was taken (do you know a synonym) in the late afternoon. On July 4 (on July

    asked by Henry2
  333. business

    should companies involve their marketing channels in the desighnof their promotional programs? what ar the advantages and disadvantages of doing so?

    asked by nissa
  334. math

    Which of the following can be the average(arithmetic mean ) of four consecutive positive even integers? a. 2 b.3 c. 4 d. 5 e. 6

    asked by reena
  335. Biology

    Suppose that a clolur blind man has parents with normal vision. Would all his sons be colour-blind ? Was his mother a carrier ? would all his daughters be carriers

    asked by Melissa
  336. Chemistry

    if you have 100mL of 0.1M acetic acid (ka = 1.8x10(-5)what is the pH after 10mL NaOH is added? I came up with an answer of 2.895, but i'm not sure if its right.

    asked by Kevin
  337. Biology

    In man, muscular dustrophy , is inherited as a sex linked recessive , a couple , both of whom are normal, have five children, three boys and two girls , the oldest boy is beginning to show symptoms of the disease, what could you tell them about the chances

    asked by Melissa
  338. Statistics

    One sample of n=20 scores has a mean of M=50. A second sample of n=5 scores has a mean of Mean=10. If the two samples are combined, what is the mean

    asked by Sher
  339. physics

    a cube of gold 30mm long on each edge is worth $10,000.how much is a gram of gold worth?

    asked by nanag
  340. Biology 110

    Jim has been stung by 35 bees and is going into anaphylactic shock. How is this happening; why is it happening; what can I do to help?

    asked by Susan Yi
  341. english

    I need help with topic sentence on a book character. the book is chrysalids and my charcter is David strorm. im not sure how to write a topic sentence any examples?

    asked by jill
  342. Rates

    Which deal is the better buy? "Dazzle for clean clothes! Just $5.99 for 64 fluid ounces" Or "Spot-Be-Gone for your laundry: 150 fl oz. for $7.29"?

    asked by Alex L.
  343. English

    Can someone edit this essay? High school is a menacing, over-bearing world that hardly gives the average student to even stop and think. With the threat of a possible test or project coming up, combined with constant homework, it's easy to forget you're

    asked by Mathew
  344. Natural science

    What might happen to earth if the temperature in the atmosphere rises by 5degrees and if the water in the ocean gets colder?

    asked by Amanda
  345. math

    I am a 3 digit #. All 3 digits are the same . I could not be any greater . What # am I ?

    asked by Ridgecrest
  346. physics

    pls explain to me how you add 65km{North 85 degreesWest], 3500m[South 10 West}, 6000m{East 70 degrees South], 54km[North 60 degrees East]. pls explain to me how i should add these vectors. I really need help. pls help

    asked by ted
  347. MAthe

    Simplify by removing Factor of 1 3v-9/3-v

    asked by KATIE A
  348. Math

    What is square root for 25/4+1/2 Please help me

    asked by Sadie
  349. MATH

    Divide and Simplify y^2-16/y divide y-4/y+1

    asked by KATIE A
  350. Science

    Put slice of "potato" in four diff bowls. Add diff "solutions" to each bowl. Which is Dependent Variable and which is Independent Variable?

    asked by LW
  351. philosophy

    P v Q" is best interpreted as P or Q but not both P and Q X P or Q or both P and Q Not both P or Q P if and only if Q

    asked by bean