Questions Asked on
November 23, 2013

  1. Physics

    A 710kg car drives at a constant speed of 23m/s . It is subject to a drag force of 500 N. What power is required from the car's engine to drive the car (a) on level ground? (b) up a hill with a slope of 2.0∘ ?

    asked by Amy
  2. Math

    The bases of trapezoid ABCD are AB and CD. Let P be the intersection of diagonals AC and BD. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD.

    asked by ASDF
  3. science

    A geneticist is studying a pedigree that shows the family history of a recessive genetic disease. Which of the following pedigrees shows an impossible relationship? (

    asked by emma
  4. Math

    Let ABCD be a parallelogram. Let M be the midpoint of AB and N be the midpoint of AD. Diagonal BD intersects CM and CN at P and Q, respectively. Find PQ/BD.

    asked by ASDF
  5. chemistry

    20.0 g of ammonium nitrate (NH4NO3) is dissolved in 125 g of water in a coffee-cup calorimeter, the temperature falls from 296.5 K to 286.4 K. Find the value of q for the calorimeter.

    asked by Sona
  6. math

    the area of a triangle is equal to 48 cm squared and two of its sides measure 12 cm and 9 cm, respectively. find the possible measures of the included angles of the given sides.

    asked by hazel
  7. Math help plz check my answers!

    1. Write the ratio in the simplest form. 50:10 25:5 10:2 5:1 1:5 2. Solve the following proportion. r/5= 9/21 r = 9 r = 2.14 r = 11.66 r = 37.8 3. A recipe calls for 3 cups of flour to make 3 dozen cookies. Use the proportion to calculate how much flour is

    asked by sally
  8. Science

    How did Lamarck and Darwin differ in their thinking about species? A. Darwin thought that organisms could induce their own changes, while Lamarck thought that change could only be induced by an organism's environment. B. Darwin thought that change could

    asked by Anonymous
  9. math

    Electron Tube Electronics made 50,000 TVs last month. If 3.5% of them were high definition, how many high definition TVs were produced?

    asked by love
  10. Science

    Luther Burbank was a plant breeder who developed a strain of potato plant that produced more tubers of larger size than other potato plants that were grown on farms at the time. This strain of potato was also resistant to the potato blight that had wiped

    asked by Anonymous
  11. Statistics

    Exercise 8.92 Tony's Pizza guarantees all pizza deliveries within 30 minutes of the placement of orders. An agency wants to estimate the proportion of all pizzas delivered within 30 minutes by Tony's. What is the most conservative estimate of the sample

    asked by ----
  12. Calculus

    An observer stands at a point P, one unit away from a track. Two runners start at the point S in the figure and run along the track. One runner runs 2 times as fast as the other. Find the maximum value of the observer's angle of sight è between the

    asked by John
  13. Algebra

    Make a conjecture about the solution of a system of equations if the result of subtracting one equation from the other is 0 = 0 A. There are no solutions b. there are infinite number of solutions c. Cannot determine any solution d. the solutions are

    asked by G65
  14. Grade 8 Math

    A garden will be made up of a parallelogram, a rectangle and a triangle. The garden must have an area of 500m2. Draw two possible gardens. Determine the dimensions of each part of the garden, and justify your choice of these dimensions.

    asked by Robel Taame
  15. College alerbra

    Scott invested a total of $9500 at two separate banks. One bank pays simple interest of 11% per year while the other pays simple interest at a rate of 9% per year. If Scott earned $973.00 in interest during a single year, how much did he deposit in each

    asked by Matt
  16. Physics

    Problem 2- A 4 kg object is attached to a vertical rod by two strings, as in the Figure. The object rotates in a horizontal circle at constant speed 6 m/s. Find the tension in (a) the upper string and (b) the horizontal string.

    asked by Mariam
  17. Calc

    At noon, ship A is 100km west of ship B. Ship A is sailing south at 30km/h and ship B is sailing north at 15km/h. How fast is the distance between the ships changing at 4:00pm?

    asked by Anon
  18. Physics

    A 61-kg snow skier is being pulled up a 14 ° slope by a steel (Young's modulus 2.0 x 1011 N/m2) cable. The cable has a cross-section area of 7.0 x 10-5 m2. The cable applies a force to the skier, and, in doing so, the cable stretches by 2.1 x 10-4 m. A

    asked by Samantha
  19. Physics

    Problem 3- A 40 kg child swings in a swing supported by two ropes, each 3 m long. (a) If the tension in each rope at the lowest point is 350 N, a. find the child's speed at the lowest point. b. the force exerted by the seat on the child at the lowest

    asked by Mariam
  20. Math

    A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus, the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 30 ft, find the dimensions of the window so that the greatest possible

    asked by Lenny
  21. Physics

    A 68-kg water skier is being pulled by a nylon (Young's modulus 3.7 x 109 N/m2) tow rope that is attached to a boat. The unstretched length of the rope is 15 m and its cross-section area is 1.8 x 10-5 m2. As the skier moves, a resistive force (due to the

    asked by Samantha
  22. Challenge

    Suppose you have been hired as a financial consultant to Defense Electronics, Inc. (DEI), a large, publicly traded firm that is the market share leader in radar detection systems (RDSs). The company is looking at setting up a manufacturing plant overseas

    asked by Serenity1
  23. math problem grade 8!!

    A soccer goalie has saved 14 shots and let in 1 goal. Explain Please!!!

    asked by smile0003
  24. Solar Energy

    With respect to a PV module's I-V and P-V curves, and the module's operating point, consider the following statements: a) When the operating point of the PV module is on the MPP (maximum power point), \(P_{mpp} \lt V_{oc} \times I_{sc} \) b) For a given

    asked by John
  25. TRIPLE JUNCTION SOLAR CELL - I

    The figure below presents the EQE of a triple junction solar cell with junctions A, B and C under short circuited (V = 0 V) condition. EQE table is: A: EQE = 0.7 wavelength= 300 to 650 nm B: EQE = 0.9 Wavelength= 650 to 850 nm C: EQE = 0.8 Wavelength= 850

    asked by UNO
  26. Finance

    Calculate the project’s initial Time 0 cash flow, taking into account all side effects.? This will be a five-year project. The company bought some land three years ago for $4.2 million in anticipation of using it as a toxic dump site for waste chemicals,

    asked by Cheryl
  27. math

    In right ∆ABC, C is a right angle and sin A = . What is mB?

    asked by tiara
  28. english - myths

    The traits of a hero are determined by A. cultural values. B. their experiences.

    asked by orpheus
  29. finance

    Find the amount of periodic payment necessary for the deposit to a sinking fund: A=50,000 n=semiannually , r=13%, t=15 yrs.

    asked by lisa
  30. electricity

    A current loop with radius 20 cm and current 2 A is in a uniform magnetic field of 0.5 T. Considering all possible orientations of the loop relative to the field, what is the largest potential energy difference (in Joules) you can find between two

    asked by Antony need some help here
  31. Statistics

    Tony's Pizza guarantees all pizza deliveries within 30 minutes of the placement of orders. An agency wants to estimate the proportion of all pizzas delivered within 30 minutes by Tony's. What is the most conservative estimate of the sample size that would

    asked by ----
  32. Finance

    Calculate the project’s initial Time 0 cash flow, taking into account all side effects.? This will be a five-year project. The company bought some land three years ago for $4.2 million in anticipation of using it as a toxic dump site for waste chemicals,

    asked by Serenity1
  33. reading what does this mean?

    Those members will create a "page" in a characterization book entitled "Two Kinds." Each page will present a character, character terms specific to this character, a graphic image and text suppot that "proves" each character term that has been assigned.

    asked by anonymous
  34. Physics

    A steel (Young's modulus 2.0 x 1011 N/m2) wire is strung between two supports attached to a ceiling. Initially, there is no tension in the wire when it is horizontal. A 98-N picture is then hung from the center of the wire, as the drawing illustrates, so

    asked by Samantha
  35. Chemistry

    Balancing Complete Redox Reactions I need help on the half reduction part for both reduction and oxidation of Cl2(g) --> cl^1- (aq) + OCl^1- (aq). I got both of the half reactions started. Cl2 --> Cl^- (Reduction) .... Cl^1- (aq) + OCl^1- (aq) (Oxidation).

    asked by Chris
  36. english

    An important purpose of myths is A. to create interesting entertainment and exciting story plots. B. to illustrate the connections between modern times and the past. C. to build an understanding of the past and teach lessons for the future. D. to establish

    asked by orpheus
  37. Finance Challenge

    The new RDS project is somewhat riskier than a typical project for DEI, primarily because the plant is being located overseas. Management has told you to use an adjustment factor of 3 percent to account for this increased riskiness. Calculate the

    asked by Serenity1
  38. physics-can anyone solve this please

    3. A positive helium ion He+ is released from rest at the surface of a +1000 V flat electrode. It travels in the +x-direction (in vacuum) across a 1 mm gap, passes through a small hole in a +0 V electrode that is parallel to the first one, and enters a

    asked by Carl
  39. physical

    Specific Heat. Copper has a specific heat of 0.092 cal/g/deg C. A 75 gram copper mass has been heated to a temperature of 100 degrees C. The copper is placed in thermal contact with 50 grams of water at 25 degrees C. What will be the final equilibrium

    asked by Anonymous
  40. finance charges

    Use a calculator to evaluate an ordinary annuity formula for m, r, and t (respectively). Assume monthly payments. $150; 8%; 35 yr

    asked by Anonymous
  41. Math

    0.08x^3 + 0.6x+2.8 absolute-value function Rational function Another polynomial function Quadratic function

    asked by Anonymous
  42. science

    theory of plate tectonics/what are tectonics plates?

    asked by mikel
  43. Chemistry

    Balancing Complete Redox Reactions I need help on the half reduction part for both reduction and oxidation of Cl2(g) --> cl^1- (aq) + OCl^1- (aq). I got both of the half reactions started. Cl2 --> Cl^- (Reduction) .... Cl^1- (aq) + OCl^1- (aq) (Oxidation)

    asked by Chris
  44. finance

    Suppose a zero-coupon bond is selling for $614.00 today. It promises to pay $1,000 in exactly 10 years with annual compounding. What is the firm’s after-tax cost of debt if this is its sole debt outstanding (assuming the firm is in the 20% tax bracket)?

    asked by Susan
  45. Algerbra

    if possible, solve the nonlinear system of equations. x^2+y^2=58 y-x=4

    asked by KT
  46. math

    Saving for retirement by contributing the same amount each month from your 23rd birthday until your 65th birthday, in an account that pays a steady 4% annual interest compounded monthly. How much will be in your fund at age 65 if you save $100 a month?

    asked by Tracy
  47. English

    Is it passive or active voice? Many clothes (we're given) to the homeless shelter. Passive By the end of today, the students (will have mastered) the grammar. Active My aunt Margot ( has been traveling) with her daughter. Active The cookies (have been

    asked by Ray
  48. english

    Excerpted from A Tale of Two Cities by Charles !@#$%^&ens [1] Saint Antoine* had been, that morning, a vast dusky mass of scarecrows heaving to and fro, with frequent gleams of light above the billowy heads, where steel blades and bayonets shone in the

    asked by orpheus
  49. financial analysis

    Total Current assets Total Current Liabilities Net Working Capital Current Ratio a. Cash is acquired through issuance of additional common stock. _________ _________ _________ _________ b. Merchandise is sold for cash. (Assume a profit.) ___+______

    asked by Anonymous
  50. math

    Solve the following proportion:t/8 = 3/4

    asked by Matt
  51. Math

    The radius of a circle and it's circumference Direct or inverse

    asked by Anonymous
  52. math

    Miriam is four years older than Ricardo. 10 years ago she was 3 times as old as Ricardo was then. A) How old are they now B) determine whether your answer is correct by checking that it satisfies the conditions of the problems

    asked by Kay
  53. waste water

    The cross-sectional surface area of the screen channel during maximum flow = 0.75 m2. The maximum free surface area in the clean screen = 0.5 m2. Use hL=1C⋅(V2−v2)(2⋅g) for calculating the head loss, the friction coefficient (C) for a clean screen is

    asked by bilal
  54. physics

    how much work (in ft lb) is done by a large bucket that can lift 4.5 ton of dirt 14 ft into the air and dump it into a 5.0 yd cubed dump truck?

    asked by carol
  55. algebra 1

    Marissa is a photographer. She sells framed photographs for $100 each and greeting cards for $5 each. The materials for each framed photograph cost $30, and the materials for each greeting card cost $2. Marissa can sell up to 8 framed photographs and 40

    asked by malik
  56. CHEMISTRY BALANCING CHEMICAL EQUATION

    H2SO4 + NaOC = Na2SO4 + H2O

    asked by HYO JIN
  57. algebra 1

    This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS).

    asked by mark
  58. myths

    In the archetypal heroic quest, the hero A. goes on a quest to demonstrate his strengths and perfection. B. overcomes all challenges without damage to his core strengths. C. exhibits both strengths and flaws as he faces challenges. D. builds a following as

    asked by orpheus
  59. math

    Find the area of the shaded region. View the graph and image at: postimg.o rg/image/dg4kt89v1/ Please help me explain this one. I know the ans to this one but can not work out.

    asked by math
  60. Haikus

    Are these ok? The wild animals Are very protective of Their natural home The sunlight is nice For us to see in daylight And helps us keep warm Do any of these contain symbolism? If so, which ones and where?

    asked by Izzy
  61. 8th grade science :(

    How does the sun's gravity influence tides?

    asked by helena
  62. Accounting

    Hawkeye Electric Company engaged in the following transactions during July. Journalize the preceding transactions on the books of Hawkeye Electric Company using the perpetual system of inventory. July 2 – Purchased inventory for cash, $800 July 5 –

    asked by Lissa
  63. math grade 8 please help!!!

    1/5 of 10% of 200g how would i solve this plz explain!! (one over five of ten percent of two-hundred grams)

    asked by anonymous
  64. cal

    The function gives the distances (in feet) traveled in time t (in seconds) by a particle. Find the velocity and acceleration at the given time. s= √(t^2-5), t=3

    asked by tony
  65. English

    1. She cut it open. (Is 'open' an objective complement? What is the part of speech of 'open'? Is 'open' an adjective or a 'verb'?) 2. Chocolate is made from cocoa beans. 3. Chocolate is made from cacao beans. (Which one is correct?) 4. He is picking up a

    asked by rfvv
  66. math

    A 1963 Chevy Bel Air, a classic car today, cost $2400 new in mid-1963. How much would that be in 2012 dollars?

    asked by Tracy
  67. statistics

    Failing to reject the null hypothesis when it is false is a Type II Error. T or F, and why or why not?

    asked by Shar
  68. Accounting

    I am doing a report on finding the major challenges in the future of my university with regards to their revenue and expenses. I have to discuss the main financial obstacles faced by the university and explain why each presents problems with future

    asked by Jess
  69. math

    The graph below shows the rate of natural gas usage (in therms per day) in one household for a 30 - day period. Estimate the total number of therms used during this period. Use left endpoints and rectangles with widths of 3 days. View graph at: postimg.o

    asked by math
  70. Math-Algebra 1

    Part 1: When writing linear equations, how do you determine which form of a line to use? Part 2: Choose 1 set of points from the choices below. Then, solve the problem and post your solution, showing your steps. Write an equation in point-slope form for

    asked by Gabby
  71. n nb

    The annual interest rate for a customer’s loan of $425 is 15.75%. What is the total dollar amount to be repaid on the loan, including principle and interest, for the entire year?

    asked by Anonymous
  72. Matt

    Multiply and then simplify the following expression: (2t + 1)(t - 3)

    asked by Matt
  73. Math

    (2a4)2 = ?

    asked by Matt
  74. algebra

    How do i write the qoutient of twenty four and the number p as a variable expression using p as the variable

    asked by jen
  75. rhetoric (essay writing)

    I just need a few ideas of what are the causes of racism in EGYPT and things that I can talk about relating to social class for my research paper please. Im focusing on "black" racism. Thanks :)

    asked by nuts
  76. Algebra

    After one round in a card game, your score was 42 points. After the second round, your score was -2 points. How many points did you lose in the second game?

    asked by Anonymous
  77. Business Law

    I have a few questions that I'm not 100% about. 1. A warranty that provides restricted protection is called a ________. A. minimal warranty B. special warranty C. limited warranty D. warranty for a particular purpose I said A. 2. If the party to whom goods

    asked by Eri Uchi
  78. statistics

    IQ scores were obtained from randomly selected couples.For 20 such pairs of people, the linear correlation coefficient is 0.881 and the equation of the regression line is y= -6.93+ 10.8x, where x represents the IQ score of the husband. Also, the 20x values

    asked by angela
  79. Math

    Mel paid $569.27,including 6% tax! for LCD computer monitor. How much did the computer monitor itself cost?

    asked by Anonymous
  80. algebra

    Eric walks 24 feet in seconds towards the front of a train that is moving at 80 feet per second. What is Eric's rate of travel with respect to the land?

    asked by Anonymous
  81. Math grade 9 and up

    let s and w represent positive integers where x,y satisfy x/s+y/w=1 and s/x+w/y=4, find x+y in terms of s and w It's really hard even for the teachers it took them a while. So I I was wondering how to solve it

    asked by Xein
  82. Math

    WHAT WOULD 18/100 BE IN RATIO FORM, I THINKING 18:100 BUT NOT SURE?

    asked by Libby
  83. Math

    Eric walks 24 feet in 3 seconds towards the front of a train that is moving at 80 feet per second. What is Eric's rate of travel with respect to the land?

    asked by Anonymous
  84. Chemistry

    Balancing Complete Redxo Reactions. I am not sure how I am suppose to start anything. Even the Half Reactions. BrO3^1- + Br^1- + H^1+ --> Br2 + H20. I need to know all the steps on how to do half reactions & I think I should be good.

    asked by Cloud
  85. Algebra

    The product of 2 and y plus the result of multiplying z by 2 plus x equals 3.

    asked by Joy
  86. algebra 2

    The annual expenses of a manufacturing company must satisfy the inequality that follows, where x is in millions of dollars. 2(x-5)>6(x-3) A. Solve the inequality for x. Interpret the result.

    asked by ricky help please
  87. Geometry

    What is y if 6y+1=21y+13

    asked by Destiny
  88. Math

    12g-6=7g How do I solve this one because I have to find g by itself

    asked by Jerald
  89. Statistics

    125/500 women soda drinkers indicate they drink diet soda. At the .01 level, does this evidence indicate that more than 20% of the women soda drinkers drink diet soda? Determine and explain the P-value please. I have the numbers...just cannot explain.

    asked by Sandra
  90. Civics

    Which rights have allowed for citizens to check the powers of government?

    asked by Kali
  91. rigor

    simplify the area of the nerds box 3x/10 and the answer is 3 1/2

    asked by rian
  92. statistics

    If the average commute time is 10.9 miles, but the average is actually the mean of a sample of 300 commuters and the sample standard deviation is 6.2 miles Estimate the true mean commute distance using 99% confidence level.

    asked by Mel
  93. Calculus

    Find the point on the line -6 x + 5 y - 1 =0 which is closest to the point ( -4, 1 )

    asked by ryan
  94. Civics

    Ms.Sue would you mind checking my answer? Question~How does the constitution protect someone's freedom of speech while also limiting their freedom of speech? Answer~ we are allowed to state our opinion as long as it-does not taken someone's rights away,

    asked by Kali
  95. Principles of Accounting I - 29

    The beginning capital of the business totals $4,000. If the net income for the period totals $14,000 and the withdrawals by the owner total $3,000, what will be the new capital balance reported?

    asked by mary
  96. Math

    True or false if x > 9 then 2 x > 18

    asked by Kgk
  97. Math

    Combine like terms: 11r + 3 - 12 + 2r

    asked by Matt
  98. math

    Simplify the following algebraic expression: b[b(b - 2) - 4] + 1

    asked by Matt
  99. math

    I do not understand how the odds of drawing a queen from a deck of cards is 3to1

    asked by angela
  100. algebra 1

    and I need help on this one problem This homework question was removed due to a copyright claim submitted by the National Network of Digital Schools Management Foundation (NNDS). would a graph model this problem situation?

    asked by nicki
  101. English

    The duckling started swimming out of instinct when she followed the rest of the flock into the lake for the first time. Do any commas need to be added?

    asked by Tessia
  102. law

    How does prosecutorial discretion affect the overstating of laws on average sentencing?

    asked by joanna
  103. Yanii

    What property of water forms a meniscus?

    asked by Biology
  104. Yanii

    What unique property of water allows organisms living in lakes to survive in below zero winter conditions ?

    asked by Biology, One more question
  105. Algebra

    The result of multiplying 2 by x plus y times 3 plus 5 times z is equal to 10.

    asked by Joy
  106. Algebra

    The product of x and 3 plus the product of 7 and y plus z times 4 is equal to 3.

    asked by Joy
  107. Haikus

    Would this be a good haiku? Wisconsin snow falls Gently and softly like rain The children go play

    asked by Izzy
  108. Math

    Flora traveled 795miles from Dalls to Atlanta . then she traveled 841miles from Atlanta to new york . About how many miles did Flora travel in all? Answer,, 795+841=1636 The answer ,,,add or multipiy. 2/ A square box holds 49 teniss balls. What

    asked by Joji
  109. law

    How do “Other” crimes cause any estimated difference in classification of three-strikes arrests?

    asked by joanna
  110. Algebra (Verbal Expressions- More Difficult)

    The sum of 6.5 times u, 5 and -2. plus the product of 3.5 and x is equal to the result of adding x, 4.5 times y and -10. The sum of x and y plus the result of adding z and 8.5 equals 2 times x plus -3 times y plus the result of multiplying 5 by u plus -7..

    asked by Joy
  111. Math

    102=8a+5a-3a I add 8a and 5a first to get 13 and then add 3?

    asked by Jerald
  112. Magnets

    A positive helium ion He+ is released from rest at the surface of a +1000 V flat electrode. It travels in the +x-direction (in vacuum) across a 1 mm gap, passes through a small hole in a +0 V electrode that is parallel to the first one, and enters a region

    asked by Ed some one please help