Questions Asked on
April 29, 2013

  1. english

    8. Identify the sentence that contains an error in punctuation or capitalization. "After you’ve rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It won’t take very long."

  2. English

    7. Identify the sentence that contains a word or phrase that should not be in italics. *Is Mel Gibson in the movie version of Hamlet or Macbeth? Lenny has trouble pronouncing the word bonjour. Glenda subscribes to Smithsonian and Time magazines. Thornton

  3. english

    9. Identify the sentence that contains an error in punctuation or capitalization. Perry asked if anyone knew the words to "Locked Out." "Wasn't that in the movie Reality Bites," asked Grace? Garrison yelled from the other room, "I loved that movie!" "In

  4. english

    11. All of the guests at the party partook in libations of all sorts to honor the hostess of the party. a meal of several courses *the pouring of drink as an act of respect the sharing of kind words when in a large group a form of gift giving that pays

  5. Math

    math word problem a building 240ft tall casts a 100 foot long shadow. If a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the persons eyes to the top of the building(to the nearest hundredth of a

  6. Calculus

    A particle moves along the curve y = sqr(1+x^3). As it reaches the point (2,3), the y-coordinate is increasing at a rate of 4 cm/s. How fast is the x-coordinate of the point changing at that instant.

  7. Biology

    Is 9th grade biology hard? Is it interesting...?? I love life science but I just wondering if 9th grade biology hard??? I'm taking biology next year.

  8. Math

    A kite is 32m above from the ground. The angle the kite string makes with the ground is 39°. How long is the kite string, to the nearest metre?

  9. Math

    A multiple choice quiz contains five question. Each question has four answer choices. Michael is not prepared for the quiz and decides to guess for each question. What is the probability that Michael will get at least one question correct? What is the

  10. chemistry

    im so confused about this question Calculate the pH of a solution that has [H3O+] = 5.5 x 10-3.

  11. Math

    Your large firm is about to change to a customer-centered organization structure, in which employees who have rarely had customer contact will now likely significantly influence customer satisfaction and retention. As part of the transition, your superior

  12. chemistry

    Calculate the enthalpy of fusion of naphthalene (C10H8) given that its melting point is 128 Celsius and its entropy of fusion is 47.7 J (k*mol) .

  13. chemistry

    How many grams of ethylene glycol must be added to 37.8g of water to give a freezing point of -0.150 degrees Celsius

  14. physics

    Three point charges lie in a straight line along the y-axis. A charge of q1 = -9.80 µC is at y = 6.00 m, and a charge of q2 = -8.20 µC is at y = -4.10 m. The net electric force on the third point charge is zero. Where is this charge located?

  15. chemistry

    a)Name two cations whose salts are quite soluble in water? b)Name one anion whose salts are soluble in water.?

  16. math

    Alyssa is enrolled in a public-speaking class. Each week she is required to give a speech of greater length than the speech she gave the week before. The table below show the length of several of her speeches: WK #/Length of Speech (seconds) 3/150, 4/180,

  17. Math

    Solve the mathematical puzzle. Determine the digits of R from these clues. The first digit is the answer when the third digit is divided by 2. The second and third digits add to 7. The second digit minus the first digit is 1. R is a three-digit number:

  18. math

    Draw a model for each mixed number then write the mixed number as an improper fraction 1.4 1/3=13/13 2.3 3/8=27/8 3.2 2/5=12/5 If those answers are correct, how do I draw a model?

  19. Chemistry

    A solution of H2SO4(aq) with a molal concentration of 1.66 m has a density of 1.104 g/mL. What is the molar concentration of this solution?

  20. statistics

    a quiz consists of 30 true or false questions. if the student guesses on each question, what is the standard deviation of the number of correct answers

  21. Trig(I think)

    Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a constant rate of 1m/s, how fast is the area of the spill increasing when the radius is 30m?

  22. calculus

    Using 4x^2 - 9y^2 = 36 Find y by implicit differentiation and then solve the equation explicitly for y and differentiate to get y' in terms of x.

  23. physics

    A pair of fuzzy dice are hanging by a string in my car from the rear-view mirror. I hit the gas pedal, and while I accelerate the fuzzy dice no longer hang straight down, but instead make an angle θ of 15 degrees with respect to the vertical. How fast am

  24. Chemistry

    What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M NH3 with 25.00 mL of 0.10 M NH4Cl? Assume that the volume of the solutions are additive and that Kb= 1.8 × 10-5 for NH3.

  25. essay

    how to write a 15min essay about myself

  26. Math

    The school's total attendance is 449, there are 81 present in math class, what percent of the total attendance is the attendance in the math class (to the nearest tenth)?

  27. chemistry

    If you made up a solution of NaOH by adding 0.010 mole of solid NaOH to 1.0 liter of distilled water, what would be the concentration of the OH-(aq)?

  28. math

    The speed of a powerboat in still water is 35 mi/h. It is traveling on a river that flows directly south at 8 mi/h.the boat heads directly west across the river. What are the resulting speed and direction of the boat?

  29. physics

    a stone of mass 50g is being rotated in a circle of radius 50cm with a uniform speed of 2m/s.what is thje accelerationof the stone?

  30. math

    Which value for n makes the equation n / 8 =1 true

  31. Math

    it 6:10 is the hour hand closer to the 6 or 7? Why?

  32. physics

    Consider the following figure. (a) Determine the work done on a fluid that expands from i to f as indicated in the figure. J (b) How much work is done on the fluid if it is compressed from f to i along the same path? J

  33. Algebra

    Find an equation for the line with y-intercept 3 that is perpendicular to the line 3y=2x-4. A. 2y=6-3x B. 2y=3x+6 C. 3y=9-2x D. 3y=2x+9

  34. physics

    A car of 1500 kg mass moving with constant speed 10m/s for 10s . Calculate the average force acting on the car during this time

  35. chemistry

    Given that for the vaporization of benzene Hvap= 30.7 kj/mol and Svap= 87.0 J(K * mol) , calculate Delta G (in kJ/mol) for the vaporization of benzene at 13 Celcius.

  36. physics

    An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass of 8,000 g and an area of 5.00 cm2 and is free to slide up and down, keeping the pressure of the gas constant. (a) How much work is done on the gas as the

  37. Math (Geometry-Vectors)

    Let θ be the angle between two vectors v and u . If v*u =12, |v|=2, |u|=6√2 and 0∘

  38. English

    8. Identify the sentence that contains an error in punctuation or capitalization. "After you’ve rested," Frank said, "please help me move these boxes." "Can we wait until later?" asked Emily. "I have a lot of homework." "It won’t take very long."

  39. Alg 1

    Diana is driving 182 miles to Orlando for a math convention. She has already driven x miles of th trip. If Diana drives below 70 miles per hour for the remainder of th trip, which inequality best represents the amount of time in hours, t, that is will take

  40. accounting

    During the month of December 20-1, TJ's Specialty Shop engaged in the following transactions: Dec. 1 Sold merchandise on account to Anne Clark, $2,000, plus tax of $100. Sale no. 637. 2 Issued check no. 806 to Owen Enterprises in payment of December 1

  41. physics

    A 22.0-L tank of carbon dioxide gas (CO2) is at a pressure of 9.40 105 Pa and temperature of 22.0°C. (a) Calculate the temperature of the gas in Kelvin. K (b) Use the ideal gas law to calculate the number of moles of gas in the tank. mol (c) Use the

  42. honors chem

    Calculate the number of moles of solute in each of the following solutions: Solution Moles of Solute 4.4 L of 1.00 M CuCl = mol? 3.2 L of 2.60 M K2S= mol?

  43. chemistry

    Al2(SO4)3+6KOH-->2Al(OH)3+3K2SO4 a)How many grams of potassium hydroxide are needed to completely react with 870 mg of aluminum sulfate? b)If you want to make 7.00 grams of potassium sulfate, how many grams of aluminum sulfate would you need to react?

  44. Maths

    Please I need help.Iam stuck with this question.Using sine and cosine rule: A rocket launced vertically from L is observed from A. Soon after launch when at position M its angle of elevation is 25 degree. After it climbs 4000m from this position to N its

  45. science

    what may happen to an ecosystem if nonliving factors change or if one more populations are removed from or added to the ecosystem?

  46. science

    Al(s) + HCl(aq) AlCl3(aq) + H2(g) Zn(s) + HCl(aq) ZnCl2(aq) + H2(g) Consider the unbalanced equations above. A 0.250 g sample of a mixture of aluminum and zinc metal is reacted with an excess of hydrochloric acid. Both metals react with hydrochloric acid.

  47. algebra

    I need help with the linear equation: 10 - 0.5y = 1.5x and y = 0.5(6x + 40)

  48. math

    At TelePower Plus, long-distance phone calls to China cost $0.59 for the first minute and $0.25 for each additional minute, plus an additional roaming charge of $2.50. If the total charge of a call to Beijing was $11.84, how many minutes did the call last?

  49. Physics- Coulomb's Law

    1) Particles of charge Q1 = +77 µC, Q2 = +44 µC, and Q3 = -80 µC are placed in a line. The center one (Q2) is 0.35 m from each of the others. Calculate the net force on Q1 and Q2 due to the other charges. a) Force on Q1 Magnitude b) Force on Q2

  50. science

    Why do plants without vascular systems tend to grow small and close to the ground? A. Nonvascular plants get less food than vascular plants. B. Nonvascular plants lack structures that allow the plant to grow large. C. Nonvascular plants grow close to the

  51. math

    A soccer player kicks a ball and gives it an initial upward velocity of 47 feet per second. If everyone waits for the ball to bounce, how long will it be in the air? (Use the vertical motion formula, h= -16tsquared + vt + c, where h is the height of the

  52. math

    How many pairs of integers (x,y) satisfy the conditions y=3x−1, 6x−2y=2 and 0≤x≤25?

  53. trg

    cot (pi/12)

  54. Chemistry

    A solution is made by dissolving 0.624 mol of nonelectrolyte solute in 795 g of benzene. Calculate the freezing point and boiling point of the solution. Tf=_ˆC Tb=_ˆC

  55. Completing the sentence

    Since I'm afraid of the heights, I usually -------- at the idea of sitting in the first row of the topmost balcony in a theater.

  56. Physic

    Reaction at support and internal axial force resultant Consider two straight bars of uniform cross section made of the same material. Bar 1 has an axial length 1m of and a square cross section 1mm with side length . Bar 2 has an axial length of 3 m and a

  57. Area of circle

    PAC-MAN is a circle of radius 24 with a sector of angle π/3 removed. PAC-MAN eats circular pellets of radius 2. If PAC-MAN wants to eat pellets that have that same total area that he does, how many pellets must he eat?

  58. chemistry

    49-kg woman cheats on her diet and eats a 582-Calorie (582 kcal) jelly doughnut for breakfast. (a) How many joules of energy are the equivalent of one jelly doughnut? J (b) How many stairs must the woman climb to perform an amount of mechanical work

  59. physics

    A 79-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.8 s. (a) Calculate the mechanical work done by the sprinter during this time. J (b) Calculate the average power the sprinter must generate. W (c) If the sprinter converts food energy to

  60. physics

    An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass of 8,000 g and an area of 5.00 cm2 and is free to slide up and down, keeping the pressure of the gas constant. (a) How much work is done on the gas as the

  61. Calc

    For z1 = 4cis(7pi/6)and z2 = 3ci(pi/3), find z1 · z2 in rectangular form. A.12 − 12i B.-12 − 12i C.12 + 12i D.12i E.-12i

  62. thermal heat

    Consider the following. (a) Find the work done by an ideal gas as it expands from point A to point B along the path shown in the figure. MJ (b) How much work is done by the gas if it compressed from B to A along the same path? MJ

  63. number theory and algebra

    a, b, c, d and e are distinct integers such that (5−a)(5−b)(5−c)(5−d)(5−e)=28. What is the value of a+b+c+d+e?

  64. Computers

    1. An 7-bit counter is wired as follows: The CLK input to the first stage (LSB) is the system clock. Each stage's output is used as the CLK input to the next higher stage. This counter is a: A. MOD 128 ripple counter B. MOD 256 synchronous counter C. MOD

  65. Math

    A Competitive Coup in the In-Flight Magazine. When the manager for market intelligence of AutoCorp, a major automotive manufacturer, boarded the plane in Chicago, her mind was on shrinking market share and late product announcements. As she settled back to

  66. Social studies.

    U.S Supreme Court rules that federal law is unconstitutional because it violates American first amendment rights. This is an example of ----- branch checking the ------- branch. Is it judicial and legislative I have more can you help?

  67. chemistry

    If the density of pure acetic acid is 1.005g/cm, what is it molarity

  68. Metaphor

    Please check if the following are metaphors: A yellow lantern lost at sea Along a taut and singing string

  69. social studies

    information on individual rights?

  70. physics

    a cyclist moving with constant speed 10m/s develop a power of 400 watt. Calculate the average force exerting on the bicycle

  71. Math

    What number is 33 1/3% of the positive difference between 25% of 60 and 75% of 16?

  72. chemistry

    Consider 18.0 M H2SO4, if you need to make 250.0 mL of a 3.0 M solution of H2SO4, how would you do this? 18.0 M H2SO4 has a density of 1.84g/mL what is the molality of solution? Mass % of H2SO4 in the solution and the mol fraction of H2SO4 and water in the

  73. Algebra

    Chen bought a bag of groceries weighing 15 pounds, His friend, Jo, bought a bag of groceries that also weighed 15 pounds, but contained one less item. The average weight per item for Jo's groceries was 1/2 pound more than for Chen's. How many items were in

  74. Calculus-Limits

    i have no clue how to start it. rationalizing it seems to tedious. how do i do this thanks evaluate the limit as h -> 0 ((fourth root(3 + h) - 2(3+h) - fourth root(3) + 6))/h

  75. Calculus-Function

    sketch the graph of a function in neighborhood x=2 that satisfies these conditions f(2)=3 f'(2)=2 f"(2)=-1 you can find a specific function that satisfies all of the given conditions i know the first derivative gives you critical points, and second

  76. math

    If the ratio of x+y to x−y is 114, then the ratio of y to x can be written as ab where a and b are coprime positive integers. Find a+b.

  77. math

    Find the sum of all integers m that are less than 1000 and equal to n!+1−−−−−√ for some positive integer n.

  78. math

    Calvin was at his local grocery store, and saw that they had gummy worms for sale. To satisfy his foreseeable sugar craving, he bought 72 bags of gummy worms. Upon exiting the store, he noticed the the ink on the receipt was smudged, and he could see the

  79. math

    Calvin was at his local grocery store, and saw that they had gummy worms for sale. To satisfy his foreseeable sugar craving, he bought 72 bags of gummy worms. Upon exiting the store, he noticed the the ink on the receipt was smudged, and he could see the

  80. math

    How many integers x satisfy the condition that both 2x and 3x are perfect squares?

  81. math

    The roots of the polynomial f(x)=2x3+20x2+201x+2013 are α,β and γ. What is the value of −(α+1)(β+1)(γ+1)?

  82. math

    Three roots of f(x)=x4−2x3+ax2+bx+c are −5, −3 and 4. What is the value of a+b+c?

  83. algebra

    If the expression (x2+2x−1)8 is completely expanded, what is the sum of the coefficients of the terms with even powers of x?

  84. axia

    a=p(1+r)^n p=$4000,r=0.10, and n=2years at the end of 2 years A is

  85. Basic Math

    -6-13.1+7.4

  86. math

    There are 25 cars in a parking lot. Nine of the cars are red. The rest of the cars are black and white. A. What percent of cars in the lot are red? Not red? B. describe two ways to determine the percent of cars that are not black given the number of white

  87. math

    9x^2-6x-7=0 is it a : One rational solution Two rational solutions Two irrational solutions One complex solution Two complex solutions

  88. math

    x,y,z are positive real numbers such that x+y+z=9 and xy+9xz+25yz=9xyz. Find the sum of all possible values of xyz.

  89. psuchics

    Reaction at support and internal axial force resultant Consider two straight bars of uniform cross section made of the same material. Bar 1 has an axial length 1m of and a square cross section 1mm with side length . Bar 2 has an axial length of 3 m and a

  90. maths

    multiple choice question has 5 available options, only 1 of which is correct. Students are allowed 2 attempts at the answer. A student who does not know the answer decides to guess at random, as follows: On the first attempt, he guesses at random among the

  91. Math

    On a true-false test, each question has exactly one correct answer: true, or false. A student knows the correct answer to 70% of the questions on the test. Each of the remaining answers she guesses at random, independently of all other answers. After the

  92. L.O

    Identify and describe 3 environmental health hazards that cause ill health in my community and south africa globally?

  93. Maths

    Consider all 3-term geometric sequences with first term 1 and with common ratio the square of an integer between 1 and 1000. How many of these 1000 geometric sequences have the property that the sum of the 3 terms is prime?

  94. MATHS

    Three roots of f(x)=x^4−2(x^3)+a(x^2)+bx+c are −5, −3 and 4. What is the value of a+b+c?

  95. MAths

    Consider the following system of inequalities: (c−1)x^2+2cx+c+4≤0 ---- (1) cx^2+2(c+1)x+(c+1)≥0 ---- (2) The sum of all real values of c, such that the system has a unique solution, can be written as a/b, where a and b are coprime positive integers.

  96. physics

    A freely running motor rests on a thick rubber pad to reduce vibration. The motor sinks h=10 cm into the pad. Estimate the rotational speed in RPM (revolutions per minute) at which the motor will exhibit the largest vertical vibration.

  97. physics

    Tetherball is a game played by kids. The equipment consists of a volleyball on a string, with the other end of the string tied to the top of a post. Kids hit the ball back and forth around the post. Consider a volleyball of total mass 200 g attached to the

  98. MAths

    Raoul wants to create a weekly schedule for going to the gym. He wants to go to the gym the same three days each week, and he wants there to be at least one day in between each of his visits. How many different ways can Raoul schedule his weekly gym

  99. physics

    A freely running motor rests on a thick rubber pad to reduce vibration. The motor sinks h=10 cm into the pad. Estimate the rotational speed in RPM (revolutions per minute) at which the motor will exhibit the largest vertical vibration.

  100. Radius

    Γ is a circle with chord AB. P is a point outside of Γ such that PA is tangent to Γ and ∠BPA=90∘. If AB=48 and PB=8, what is the radius of Γ?

  101. probability

    There are 4 students in a class. A teacher wants them to each secretly choose a partner for a group project. If everyone independently chooses a partner randomly, the probability that everyone chooses a partner who chose him/her is P.

  102. maths

    A point P is uniformly chosen inside a regular hexagon of side length 3. For each side of the hexagon a line is drawn from P to the point on that side which is closest to P. The probability that the sum of the lengths of these segments is less than or

  103. MAths

    A unit square is drawn in the Cartesian plane with vertices at (0,0),(0,1),(1,0),(1,1). Two points P,Q are chosen uniformly at random, P from the boundary of the square and Q from the interior of the square. The line L1 through P and Q is drawn. The

  104. physics

    Here's a neat trick. If your average ceramic bowl has a mass of 200 g, what is the difference in Newtons between the weight of the bowls on the top of her head before and after she does the trick? Details and assumptions The acceleration of gravity is

  105. physics

    Tetherball is a game played by kids. The equipment consists of a volleyball on a string, with the other end of the string tied to the top of a post. Kids hit the ball back and forth around the post. Consider a volleyball of total mass 200 g attached to the

  106. Chemistry

    23.55 ml of the NaOH were added to partially neutralize a new 25.00 ml sample of the acid. The pH of the mixture was measured as 5.33. Calculate Ka for the acid, HA, using the partial neutralization method

  107. Physics

    A bullet is made up of what substance?

  108. algebra

    A rectangular piece of cardboard is 2 units longer than it is wide? From each of its corner a square piece 2 units on a side is cut out.The flaps are then turned up to form an open box that has a volume of 70 cubic units.Find the length and width of the

  109. Algebra

    At a point 16 yards from the base of a tower,the distance to the top of the tower is 4 ysrds more than the height of the tower.Find the height of the tower.

  110. Physics

    A bullet is made up of what substance?

  111. Physics

    A bullet is made up of what substance?

  112. Physics

    A bullet is made up of what substance?

  113. life orientation

    5 ways in whuch environmental or human factors affect the environment

  114. English

    1. He brushes teeth in the evening. 2. He brushes teeth in the evenings. 3. He will brush teeth in the evening. 4. He will brush teeth in the evenings. (What is the difference between #1 and #2, and #3 and #4?)

  115. Mathematic

    Pravin read 3 pages of storybook every 5 minutes. How many pages did he read after half an hour?

  116. math

    The product of two numbers is 24. Their difference is 2. What are the two numbers?

  117. math

    The product of two numbers is 24. Their difference is 2. What are the two numbers?

  118. physics

    a stone of mass 50g is being rotated in a circle of radius 50cm with a uniform speed of 2m/s.what is thje accelerationof the stone?

  119. business study

    busuness plan case study about junior businessman of the year

  120. Science

    Find out the molality of acetic acid ch3cooh whose molarity is 2 and density of solution is 1.20 g/ ml ?

  121. Chemistry

    Hydrogen bromide gas, a polar covalent compound, is very soluble in water. Describe what happens, referring to intermolecular forces, as the hydrogen bromide dissolves. Diagrams may be helpful in your explanation. I need help with this question for

  122. Science

    Find out the molality of acetic acid ch3cooh whose molarity is 2 and density of solution is 1.20 g/ ml ?

  123. Science

    Find out the molality of acetic acid ch3cooh whose molarity is 2 and density of solution is 1.20 g/ ml ?

  124. life orientation

    Critically discuss 10 ways in which the environmental health hazard can impact negatively on one's health

  125. math for business and finance

    What sinking fund payment would be required at the end of each three-month period, at 8% interest compounded quarterly, in order to amount to $20,000 within 5 years?

  126. algebra 2

    A triangle has points A(2, 2), B(2, 4), and C(6, 3) and is reflected over the x-axis. A'B'C' are the coordinates of the reflected image. What is the B' coordinate?

  127. statistics

    Let X represent the outcome of a single roll of a fair die. Suppose you will win $2 if the outcome is either 2 or 5, and lose $1 otherwise. What are your expected winnings in 20 tosses?

  128. accounting

    . Production and cash-outlay computations RPR, Inc., anticipates that 120,000 units of product K will be sold during May. Each unit of product K requires four units of raw material A. Actual inventories as of May 1 and budgeted inventories as of May 31

  129. Eng B

    1. When author Sarah Orne Jewett Writes That Sylvia Lives “hart to Heat” with nature, she means that the young girl A. Mistrusts her “dream of love.” B. Operates on instinct. C. It, literally, a woodland creature. D. Is most alive in the

  130. Calculus

    Find the derivative y= a^3 + cos^3 X

  131. english

    where did the story October sky take place

  132. pre calculus

    find the following for the function f(x)=(x+3)^2(x-1)^2 a.) find the x and y intercept of the polynomial function f. b.)find the power function that the graph of f ressembles for large values of lxl. c.)determine the maximum number of turning pointsof the

  133. chemistry

    The pressure in a constant-volume gas thermometer is 0.700 atm at 100°C and 0.512 atm at 0°C. (a) What is the temperature when the pressure is 0.0500 atm? °C (b) What is the pressure at 405°C? atm

  134. physics

    A 79-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.8 s. (a) Calculate the mechanical work done by the sprinter during this time. J (b) Calculate the average power the sprinter must generate. W (c) If the sprinter converts food energy to

  135. physics

    A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Two metallic blocks are placed in the water. One is a 50 g piece of copper at 84°C. The other sample has a mass of 58 g and is originally at a

  136. pre calculus

    use the rational zeros theorem to find all the real zeros of the polynomial function. use the zeros to factor f over the real numbers: f(x)=x^4+2x^3-7x^2-8x+12 I am totally lost, please help?

  137. Eng B

    It's most accurate to say that interpretative literature A. is intended to meet the reader's expectations. B. weaves exciting action around a standard formula. C. contains or suggests universal truths. refers to today's hot topics. Answer is A

  138. physics

    An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass of 8,000 g and an area of 5.00 cm2 and is free to slide up and down, keeping the pressure of the gas constant. (a) How much work is done on the gas as the

  139. Physics

    Consider a thin, infinitely long conducting ribbon that carries a uniform current density j(current per unit area). The width of the ribbon is w and its thickness s is extremely small (ss) from the ribbon edge. What is the magnitude of the magnetic field B

  140. Statistics

    the scoring of IQ tests is designed so that the scores of the test taking population are normally distributed with a mean of 100 and a standard dev of 15. what percent of the population have an IQ less than 92? how do i figure this out?

  141. physics

    A nuclear power plant has an electrical power output of 1900 MW and operates with an efficiency of 32%. If excess energy is carried away from the plant by a river with a flow rate of 1.0 106 kg/s, what is the rise in temperature of the flowing water? °C

  142. physics

    In a running event, a sprinter does 4.9 105 J of work and her internal energy decreases by 9.1 105 J. (a) Determine the heat transferred between her body and surroundings during this event. J (b) What does the sign of your answer to part (a) indicate?

  143. Math (Geometry)

    In right triangle ABC, we are given that ∠ABC=90∘ and AC=34. D is a point on line segment BC such that BD=12,DC=18. What is the length of AD?

  144. algebra

    Consider all 3-term geometric sequences with first term 1 and with common ratio the square of an integer between 1 and 1000. How many of these 1000 geometric sequences have the property that the sum of the 3 terms is prime?

  145. Math!!! can't solve this...

    If the expression (x^2+2x−1)^8 is completely expanded, what is the sum of the coefficients of the terms with even powers of x?

  146. Math (Geometry)

    Square ABCD has M as the midpoint of AB, N as the midpoint of BC, P as the midpoint of CD and Q as the midpoint of MP. If [AMNPDQ]=20, what is the value of [ABCD]? Details and assumptions [PQRS] refers to the area of figure PQRS.

  147. agricultural

    Types of fencing farmland

  148. Math (Combinatorics)

    How many 4 digit positive integers have the ones digit a multiple of 1, the tens digit a multiple of 2, the hundreds digit a multiple of 3 and the thousands digit a multiple of 4?

  149. Math (Combinatorics)

    In the plane, the points with integer coordinates are called lattice points. Suppose a flea in the plane jumps from one lattice point to another. Each jump is one unit to the right, one unit to the left, one unit up, or one unit down. If the flea starts at

  150. Algebra

    (4x^2-2x+8) - (x^2+3x-2)=

  151. physical science

    define earth station

  152. algebra

    Consider the following system of inequalities: {(c-1)x^2+2cx+c+40 The sum of all real values of c, such that the system has a unique solution, can be written as ab, where a and b are coprime positive integers. What is the value of a+b? Details and

  153. L.O

    1.identify and describe 3 environmental health hazards that causes ill health . Crises and disasters within your community or any other community within south africa and gobally. 2.critically discuss 10 ways in which the environmental health hazards can

  154. calculus

    Find the derivative y = e^(-5x) + cos^3 x F(x)= (x^2 -x+1)^3

  155. Number Theory

    x is a real number satisfying the equation |x−20|+12=x. What is the value of x?

  156. geometry!!!! PLEASE HELP!!!!

    A point P is uniformly chosen inside a regular hexagon of side length 3. For each side of the hexagon a line is drawn from P to the point on that side which is closest to P. The probability that the sum of the lengths of these segments is less than or

  157. geometry!!!!

    Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are in A, then a+b is not in A. What is the maximum value of |A|, which is the number of elements in A?

  158. Chem hwk

    How many grams of solute are required to make a 504 mL solution of copper (I) nitrate with a concentration of 1.3317 M? I go 238.6 g but my friend said I'm way off When 84.2730 grams of solute are used to make a 504 mL solution of copper (I) nitrate, what

  159. Spanish

    Please could you help me unscramble each of the clue words in Spanish: issmpna os hewiaes It is either a breakfast or lunch? Thank you for your help, Anne

  160. Life orientation

    Ways in which the floods impacts on the community

  161. accounting 206

    cleveland metals uses a job cost and applies factory overhead to production at a predetermined rate of 180% of direct labor cost. data pertaining to recent operations follow

  162. Language Arts

    Which poem compares an athlete's drive to compete to a wild animal? A."The Women's 400 Meters" B."To James" C."Slam, Dunk, & Hook" My answer is C.Am I right?

  163. keyboardind and word processing

    you want to include a title page for a report you're sending out. how should you format the title on the page?

  164. Management

    The administrator of the Life-Time Insurance Com¬pany HMO, Ms. Taylor, was anxious to solve poten-tial problems before their new clinic opened in Austin, Texas. In Buffalo, New York, where the original clinic is located, the pharmacy had been extremely

  165. science

    which cause more severe illnesses? bacteria or viruses?

  166. english

    what keeps the "you" company in the poem The Journey by Mary Oliver?

  167. math

    If a ramp has a slope of 1/8, and I need to put a support post 11 feet from the low point on the ramp, how long should the post be?

  168. life orientation

    Descrise the Factors that contribute to lack of physical fitness and proper nutrition in the adolescent

  169. math

    (secA+tanA)(1-sinA)

  170. algebra 2

    A single die is rolled one time find the probability of rolling a number greater than 3 or less than 2, need help

  171. Chemistry

    A student mixes 450 mL of water and 116 mL of 7.90 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?

  172. LANGUAGE ARTS UGRENT!!!

    1. What's the fastest way to find out how many individual letters are quoted in the article? A: Count the number of photos in the article. B: Read the article. C: Count the heads and subtract the first head. D: Count the number of footnotes. 2. Where

  173. science

    Why do plants without vascular systems tend to grow small and close to the ground? A. Nonvascular plants get less food than vascular plants. B. Nonvascular plants lack structures that allow the plant to grow large. C. Nonvascular plants grow close to the

  174. Chemistry revision

    all these questions I got wrong on my homework today ...I'm trying to find out why and what the correct answers were .. please help How many grams of solute are required to make a 504 mL solution of copper (I) nitrate with a concentration of 1.3317 M?

  175. physics

    a double slit located a distance x from a screen, with the distance from the center of the screen given by y. When the distance d between the slits is relatively large, there will be numerous bright spots, called fringes. It can be shown that, for small

  176. coding

    what code are assigned for a patient admitted for chemotherapy for an azathioprione. I drug induced aplastic anemia? The patient has peripheral neuropathy of multiple joints of the lower extremities secondary to severe rheumatoid arthritis Code(s) with the

  177. social studies

    what year did B.C. ENTER THE CONFEDERATION

  178. l.o

    recommendation on how to address drought

  179. Maths

    An aircraft which is maintaining a constant altitude of 1000 metre is travelling directly away from an observer. At a particular instant the angle of elevation is 52 degree and 12 seconds later the angle of elevation is 16 degree. Find the distance

  180. Maths

    Find the area of the triangle with sides 8.6 cm, 9.1cm and 9.7cm. First find the size of one of the angles.

  181. Maths

    Correct each of the following incorrect statements: 1)The inverse of the function defined by y= 5/x +1 is defined by y= 5/x - 1. 2)The graph of a function and its inverse are always reflection in the line =0.

  182. Maths

    write down the domain and the range of the following: 1)g(x)=-(x-1)^2 + 3 2)f(x)=1/x+2 - 5

  183. Maths

    A and B are two balloons at the same height and 1000 metre apart. O is a ground observation position. Angle AOX is 45 degree 15' and angle BOX is 10 degree and 30'. Find the height of the balloons.

  184. matter

    why is it important too descibe and compare matter

  185. Math

    Catherine is measuring the width of one of her books.its is 3 1/2 inches wide.between wich two inch marks. On the ruler is the books measurement ?

  186. Math

    Catherine is measuring the width of one of her books.its is 3 1/2 inches wide.between wich two inch marks. On the ruler is the books measurement ?

  187. B

    For a solution of 3.3 M H2CO3 (Ka = 4.4 × 10-7), calculate: (a) [H+] ____?______M (b) pH _____??______ (c) percent ionization ______?______%

  188. life orientation

    name 2 institutions in south africa that are involved in supporting water pollution

  189. math

    if a person uses 40 to 45gallons of gas and pays $2.96 to $3.61 a gallon, how much money will pay for gas every week. I have no idea how to solve it,so if someone if is willing to help me i appreciate the help.Thank you

  190. math

    what is 8/16 of 16 counters

  191. algebra word problem

    Not exactly sure how to solve this. 2000 tickets were sold for a play generating $19,700. The price for tickets $5 for children, $10.00 for students and $12.00 for adults. There were 100 more adult tickets sold than students. Find the number of each type

  192. physical science

    If a sample emits 1000 counts per second when the detector is 1 meter from the sample, how many counts per second would be observed when the detector is 2 meters from the sample?

  193. Calculus

    Using 4x^2 - 9y^2 = 36 Find y by implicit differentiation and then solve the equation explicitly for y and differentiate to get y' in terms of x.

  194. spanish

    does anymone know any spanish songs that have two females dueting?????? cant find any!

  195. JEWLER

    WHAT COLOUR BIRTH STONE IS IN THE MONTH OF APRIL

  196. Health

    You may need to see a doctor if ________. A.) You occasionally go to bed late B.) You occasionally wake up in the middle of the night C.) You often feel well rested after a full night’s sleep D.) You often wake up feeling like you haven’t been asleep I

  197. life orientation

    explain how these organization are involved in providing a safe and healthy enviroment

  198. math

    A line has a slope of m = -8. What is the slope of the line that is perpendicular to it?

  199. volume for pyramids and cones

    when finding the volume for cones and pyramids, why do you have to multiply it with 1/3 or divide the product by 3?

  200. calculus

    find the derivative of f for the function(x)= x^3-4x+2

  201. matter

    why is it important too descibe and compare matter

  202. physics

    A man is 3/8th of the way across a railroad bridge when he hears a train coming. He knows that this passenger train cruises along at 60 MPH in this area. It turns out that he can run to either end of the bridge and jump off just ahead of the train.

  203. math

    mrs nelson has a rectangular flower box that is 5 feet long & 2 feet tall. she wants the width ofn the box to be no more than 5 feet. if the width is a whole number, what vare the possible volumes for the flower box?

  204. Math

    Write each mixed number as an improper fraction 4.6 1/2=13/2 5.1 5/6=11/6 6.1 3/8=11/8 7.3 1/3=10/3 8.3 7/8=31/8 9.2 1/4=9/4 10.2 8/9=26/9 11.4 5/6=29/6 12.8 3/5=43/5 13.5 4/6=39/7 14.10 2/3=32/3 15.9 1/4=37/4

  205. social studies

    how many syllables are in marriage isn't always necessary

  206. Stats

    Recall that in the week 2 assignment, a certain company hired three new managers from a pool of seven men and five women. All three hires were women, and the men complained of gender bias. Compute the theoretical probability that a fair selection process

  207. stats

    From previous records, a shipping company knows that the cost to deliver a small package within 24 hours is $15.50. The company charges $17.95 for shipping, but guarantees to refund the full charge if the delivery is not made within 24 hours. If the

  208. Spanish

    1. Juan no es serio. Es ________. A.paciente B.atrevido C.gracioso D.prudente I said C. 2. Rosa es atreida, no es _________. A.prudente B.callado C.artístico D.desordenado I'm not to sure about the answer for this one. 3. No, _______ me gusta tampoco.

  209. Find the horizontal and oblique asymptotes

    Find the horizontal and oblique asymptotes, if any, for the given rational function G(x)=(x^4-1)/(3x^2-3x)

  210. size

    Please check: Which of the following vary in size 1. pencils in a package 2. tennis balls in a can c. shoes in a shoe store d. eggs in an egg carton D?

  211. US History

    Why wasn't Napoleon executed?

  212. Math

    Write each improper fraction as a mixed number or a who;e number 16. 9/5=1 4/5 17.5/2=2 1/2 18.15/4=3 3/4 19.17/8=2 1/8 20.19/6=3 1/6 21.4 27/27=5 22.25/2=12 1/2 23.31/7=4 3/7 24.52/9=5 7/9 25.41/3=13 2/3 26.37/5=7 2/5 27.77/8=9 5/8

  213. social studies

    I'm doing a project and I need a atricle on John Brown. (Like Who was he? What did he do? What happened to him? Do I agree? and why? but I'm looking for a article and don't find one

  214. Physics

    One of the concrete pillars that support a house is 2.1 m tall and has a radius of 0.35 m. The density of concrete is about 2.2 103 kg/m3. Find the weight of this pillar in pounds (1 N = 0.2248 lb).

  215. Calculus

    Evaluate the following limits (x^2 + 2x - 8)/x-2 Lim x->2

  216. algebra

    On a trivia game show, a contestent will answer 21 questions. A maximum of 200 points cana be earned. Some questions are worth 10 points and some are worth 8 points. Howmany of each point-value question must the contestent answer to earn the manimum number

  217. Physics

    Your town is installing a fountain in the main square. If the water is to rise 14 m (45.9 feet) above the fountain, how much pressure must the water have as it moves slowly toward the nozzle that sprays it up into the air? Assume atmospheric pressure equal

  218. physics

    40N50Nforcesactinginsamedirectionnetforceproducedis?

  219. Science 8R - help!

    What is consumers???

  220. physics

    900kgmassmovesat10m/s.whatisthebreakingforcerequiredtostopthecarin5seconds.

  221. Algebra

    Find the horizontal and oblique asymptotes, if any, for the given rational function G(x)=(x^4-1)/(3x^2-3x)

  222. algebra

    1=radical3-3p-2p

  223. math

    verify that the function satisfies the hypotheses of the mean values theorem on the given interval. then find all numbers c in the given interval that satisfy the conclusion of the mean values theorem f(x)= 2x/x-4 [0,3]

  224. algebra 1

    Thelma wants to find the equation of a line that passes through the point (2, 2) and is perpendicular to the line Which equation best represents Thelma's equation?

  225. um reviewing old subjects .. Linear Equations

    Math.. and i don't understand this... plz go throw steps w me.. Like ex: 2 complementary angles a 24 degrees different. How much does each angle measure? Equation1: Equation: Method1: Method2:

  226. math

    Im having trouble with number lines. Can you tell me if .45 is equal to 4/10

  227. algebra(help)

    2000 tickets were sold for a play generating 19,700. The prices of the tickets were $5 for children, $10 for students and $12 for adults. There were 100 more adult tickets sold than students. Find the number of each type ticket sold. Find the number of

  228. math

    Please help me solve this question. Find the value of the annuity. a=1000 I=0.06,n=25? what is the future value of annuity? (round to the nearest cent.)

  229. math

    tia is bulding a fence around her backyard she has 40 feet of fence dose she have enough

  230. Math

    It is common to see mixed fractions in recipes. A recipe for pizza crust may ask for 1 1/2 cups of flour. You could measure this amount in two ways. You could fill a one-cup measuring cup with flour and a one-half cup measuring cup with flour or you could

  231. social studies

    again with the articles haha "An article on Abraham Lincoln's rise to the presidency (this should NOT be about his presidency but what he had to do to become president and his struggles to become one)"

  232. Math

    Christy had a full bag of flour. She made two batches of muffins.each batch used 2 1/4c if flour. Then she used 1 1/2c of flour to make pancakes. The remaining of 2 1/6c to make banana bread.

  233. calculus

    use logarithmic differentiation to differentiate the function f(x)=2^x(x^2+2)^3(x^3-3)^7/(x^2+4)^1/2

  234. macroeconomic

    what is the value of the multiplier

  235. mathss

    Raoul wants to create a weekly schedule for going to the gym. He wants to go to the gym the same three days each week, and he wants there to be at least one day in between each of his visits. How many different ways can Raoul schedule his weekly gym

  236. maths

    A video rental store offers 436 different movies for rent. The movies are categorized as Comedies, Action Movies, and Dramas. A movie may be in more than one of the categories. If 234 movies are categorized as Comedies, 97 as Action Movies, and 191 as

  237. maria vazquez

    Sonoma winery has fixed cost of $10,000 per year. its warehouse sells wine with variable costs of 80% of its unit selling price. How much in sales does Sonoma need to break even per year?

  238. coding

    what are some of the problems associated with modifiers -51 and -59

  239. math

    find the absolute minimum and maximum values of f(x)= x^(2/3) (3+x) on the interval [-2,1] i did a mistake on the other one sorry.

  240. Physics Need help plz

    An 1900 kg car is traveling with a speed of (22 +- .22) m/s. With what maximum accuracy can its position be determined? delta x= in meters Can someone please help me out I am lost on this on...Thank you

  241. Math

    4/6 butter 2/3 9/4 cups brown sugar 2 1/4 cups brown sugar 6/2 eggs 3 eggs 11/4 flour 2 3/4 flour 5/2 baking powder 2 1/2 baking powder 6/3 chocolate chips 2 chocolate chips

  242. math

    find the absolute minimum and maximum values of f(x)= x^(2/3) (3+x) on the interval [-2,1] i did a mistake on the other one sorry.

  243. Physics

    A 76.3-kN car is travelling at 68.7 mph when the driver decides to exit the freeway by going up a ramp. After coasting 355 m along the exit ramp the car\'s speed is 30.1 mph, and it is h = 14.3 m above the freeway. What is the magnitude of the average drag

  244. stats

    Identify the direction and all possible interpretations of each of the following correlations. Be sure to identify each example as positive, negative, or zero (not correlated). Then give all possible causal interpretations for the results. Many students in

  245. Math 112

    for either standard form of the parabola, describe what happens to the shape of the parabola as p increases

  246. Java

    in Java how do you create a method that will prompt the user to type in 10 votes to determine a winner in a two candidate election? Ex: Vote 10 times - Smith vs. Watson User enters: Watson watson wATson Smith SMITH smiTh watson smith watson waTSoN And then

  247. chem

    takes 190. seconds for a sample of carbon dioxide to effuse through a porous plug and 295 seconds for the same volume of an unknown gas to effuse under the same conditions. What is the molar mass of the unknown gas? Enter your answer to 3 significant

  248. Cost and Management Accounting

    MPLC produces jam and jelly of different flavors. The company wants to calculate the following variances based on the information provided. Standard Actual Sales(units) $900 $1000 Sales price per unit $15 %12 Variable cost of sales per unit$110 $9 Margin

  249. Chemistry

    The following thermodynamic data was obtained for an unknown compound. Delta Hvap = 31.3 kj/mol and Delta S Vap= 79.7 kj/mol .Calculate the normal boiling point of this compound in Celcius.. Thank you!

  250. Math/alga ta

    A(1, -5), B(6, -7)

  251. Chemistry

    imagine that you have a 100 ml of HCl, after adding 50 ml of 1M NaOH, how many moles of OH did you add

  252. Math

    5 divided by 1056?

  253. math

    The rectangle shape in a set of blocks comes in two sizes( small and large ),three colors ( yellow, red, and blue ), and two thicknesses ( thick and thin ) A. Draw a tree diagram to find the total number of outcomes. B. How many outcomes are possible?

  254. physics

    How much heat, expressed in Kwh, is required to raise the temperature of water in a 20,000 gallon pool by 10 degrees C. ? This is a real world question, I'm 18 years old and I service my neighbors pool.

  255. math

    A restaurant offers 12 types of entrees, 6 types of appetizers, and 4 types of rice.How many meals of appetizer, entree, and rice are there?

  256. Calculus

    Find dy/dx by implicit differentiation for x^2 - 2xy + y^3 = C

  257. life orientation

    5 environmental health hazards that cause Ill health crises and disasters in South africa

  258. science

    HOw would you attempt to isolate and identify a bacterial infection acquired on another planet

  259. English

    1. Three families were killed in the fire. 2. Three families died in the fire. (Which verb form should we use? Is there any difference in meaning between the two sentences?)

  260. Math

    I need help to set the equation up to solve a system to ensure that I get the answer of (-2, 4)? I also need tosolve two problems in the quadratic equation method, the two problems are x to the second power - 2x - 13 = 0 then the other is x to the second

  261. Chemistry

    imagine that you have a 100 ml of HCl, after adding 50 ml of 1M NaOH, how many moles of OH did you add

  262. math

    Fred has thirteen coins. Together they're worth $1.65. One of them ia a fifty-cent piece. What are the other coins?

  263. physics

    A body of 150kg is located at a height of 45m. If allowed to fall freely to the ground. What will be its velocity on impact?

  264. mechanical/eginineering

    when a compound gear cluster is created how is the mechanical advantage calculated

  265. Math

    At her bike factory, Eleanor manufactures two-wheel and three-wheel bikes. She has 96 seats and 212 wheels in inventory. She wants to use all the seats and wheels. How many three-wheelers should she manufacture?

  266. math

    how many integers x satisfy the condition that 2x & 3x are perfect squares.

  267. Pre- Calc

    Four times the sum of the number of reds and blue exceeded 3 times the number of whites by 3. Five times the sum of the number of blues and whites exceeded 8 times the number of reds by 13. If there were 5 more whites than blues, how many of each color

  268. chemistry

    How do you calculate deltaHf using the # of moles from a balanced equation? How do you connect the Law of Conservation of Energy to a Thermochemical Equation? Thanks so much!

  269. math

    The bacteria is in 7 liters container double every 3 minutes. After 54 minutes the container is full. How long did it take to fill a 1/4 of the container?