1. math

    A piano manufacturer has a daily fixed cost of $1200 and a marginal cost of $1500 per piano. Find the cost C(x) of manufacturing x pianos in onde day. Use your function to answer the following questions: a)On a given day, what is the cost of manufacturing

    asked by jack on September 15, 2012
  2. physics

    A blue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.2 m/s2. A green car arrives at the position of the stop-light 7.5 s after the light had turned green. What is the slowest constant speed which the

    asked by hannah on January 31, 2016
  3. Gweedo8

    a man stand on a 100 m cliff and throws a rock with speed of 40ms at 42degrees above horizontal. what time before rock hits ground. the horizontal distance the rock traveled from base of cliff.? my answer is 4.08 sec before rock hits ground 81.6 m distance

    asked by Physics on January 29, 2010
  4. Physics

    A blue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.2 m/s2. A green car arrives at the position of the stop-light 7.5 s after the light had turned green. What is the slowest constant speed which the

    asked by John on October 25, 2010
  5. World History

    +How was imperialism a cause of World War I? A. Rivalry over overseas territories increased tensions in Europe. B. Colonies' efforts to gain independence increased tensions in Europe. C. Alliances among overseas territories increased tensions in Europe. D.

    asked by June on March 15, 2017
  6. math

    Where K is a constant to be determined. If it took Ian 45 minutes to exit the stadium when there were 5,000 people who drove and 1,500 people who took public transportation, how much time will it take Ian to exit if there are 12,500 people who drove and

    asked by Sandi on May 27, 2014
  7. New Mexico History

    How did the European settlers view the land in New Mexico? How did this view compare with the way the Native Americans viewed the land? (My answer: The European settlers seen New Mexico as more land, or a place to find gold because it was known as one of

    asked by Lei on October 18, 2018
  8. physics

    A large truck with a mass of 3200 kg is pulling a trailer with a mass of 2400 kg. Both are accelerating at a rate of 0.45 m/s^2 . Determine the tension force between the truck and the trailer, and determine the force with which the truck is pulling. I'm

    asked by liz on June 2, 2017
  9. statistics

    The probablility that a person drinks at least five cups of coffee per day is .24, and the probability that a person has high blood pressure is .08. Assuming that these two events are independent, find the probability that a person selected at random

    asked by Anonymous on May 6, 2013
  10. arithmetic

    Barry and Steve are good friends. Barry wants to buy a new computer, but he doesn't have the money for it right now. Barry says he will pay Steve $2000.00 in five years if Steve gives him $1600.00 for the computer today. Steve figures that there is an

    asked by RACHELLE on June 9, 2008
  11. physics

    One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching this first snowball, you throw a second snowball at a low angle and time it to arrive at the same time as the first. Assume both

    asked by Emily on December 16, 2012
  12. Algebra Multiple choice revised!! HELP

    I have a few questions I need help with! Please explain if my answer was not right how you got to it. I got 1.) B 2.) A 3.) C 1. Solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give

    asked by Kris on March 28, 2013
  13. algebra/geometry please correct me

    You need to make a soda can with a volume of 29 cubic inches. Find the surface area. calculate the following: a) How much material is needed if the can's radius is 2 inch? Answer with the help of Reiny, but doing it with a different radius to make sure I

    asked by Nancy on November 8, 2010
  14. QMB2100

    Chicken Delight claims that 90 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 70 orders revealed that 60 were delivered within the promised time. At the .02 significance level, can we conclude that less

    asked by Ariel on July 29, 2013
  15. Math

    a) One mould forms a sculpture that is a composite object comprising a right cylinder with base diameter 15 in. and height 3 in., and a right cone with the same base diameter as the base of the cylinder and a height of 9 in. Determine the volume of the

    asked by Anonymous on October 25, 2014
  16. Physics

    A loaded elevator with very worn cables has a total mass of 2600 Kg , and the cables can withstand a maximum tension of 2.90×104 N . A) Apply Newton's second law to the elevator and find the maximum upward acceleration for the elevator if the cables are

    asked by Hadi on November 9, 2006
  17. Physics

    To stop a car, you require first a certain reaction time to begin braking. Then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 56.7 m when its initial speed is 80.0 km/h,

    asked by Bob on October 3, 2010
  18. math

    Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from

    asked by Wes on September 28, 2014
  19. Physics

    Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from

    asked by Wes on September 28, 2014
  20. Physics

    Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from

    asked by Wes on September 28, 2014
  21. civics

    Carl decides to keep his money under his mattress instead of putting it in the bank. If everyone made the same decision as Carl, what might the impact be on the national economy? A. It would not affect the national economy greatly because individuals do

    asked by Nani on June 1, 2015
  22. physics

    A mover pushes a couch a distance of 4 m to the top of a ramp into the back of a truck using 500 N of force. A) What is the work input of the mover? B) What is the mover’s power if the task takes 10s? C) If the mass of the couch is 100 kg and the back of

    asked by jaslyen on November 6, 2011
  23. help me physics

    suppose the cart has mass m = 203 g, and it strikes the clay at speed vo = 5.24 m/s and comes to a dead stop. Assume the track is frictionless, and the clay is crushed inward by 1.83 cm. a)Find the magnitude of the impulse exerted by the clay on the cart.

    asked by jason on November 1, 2010
  24. Psychology

    Which statement best illustrates the idea that people adjust their behavior according to the gender schema theory? Choose one answer. a. Agnes tells her son that it is wrong to put makeup on his face and that boys don't wear dresses and skirts. b. Bart

    asked by Jay on November 1, 2012
  25. english II

    Word Choice and the Use of Idioms (errors in the choice of words and in the use of idiomatic expressions) the answer of c. A.With all of his acne pits, in the dark his face resembled a cratered moon on a cloudy night. B.It was a strenuous tennis match, but

    asked by Shaquitta on November 24, 2009
  26. English

    Word Choice and the Use of Idioms (errors in the choice of words and in the use of idiomatic expressions) Answer With all of his acne pits, in the dark his face resembled a cratered moon on a cloudy night. It was a strenuous tennis match, but after a hot

    asked by Kimberly on April 28, 2011
  27. Compensation

    I 'm having a hard time finding answer for this question: can you please help?? In Compesation Surveys how are relevant labor markets defined : a) employment numbers, occupational classification, geography b) occupational classification, market

    asked by Jenny on June 16, 2009
  28. what is the difference

    what is the difference between 14kt gold and 14k gold and what one is the better gold Both are the same thing Thank you for using the Jiskha Homework Help Forum. In addition to the answer you already have, look what might happen if you don't distinguish

    asked by tom on February 26, 2007
  29. History

    Why are disputes over clean water sources taking place at greater frequency? A. Frequent disagreements arise between different cultures that share a water supply over perceived misuses of the precious resource. B. Regions with good, reliable sources of

    asked by Sergio on February 15, 2019
  30. history

    can anyone find a website on the lac courte oreilles band of lake superior chippewa? like history,population, activities and shelter Since I am not aloud to post any websites in my answer here is what you do: Go to google and search "Lac Courte Oreilles

    asked by robin on October 22, 2006
  31. MATH/ALGEBRA PLEASE

    Okay, I think I have arrived at all the answer to the questions thrown my way. However, how do I explain what is happening “graphically”, where the services are charging same rate? : Your company must use a transportation service to shuttle their

    asked by H on December 17, 2009
  32. social studies

    Study the diagram. Identify the missing step in the sequence describing how farming in Central America and the Caribbean can have a negative impact on the ocean. A. Factories that make pesticides dump their waste products into the ocean, polluting it. B.

    asked by jaffit on April 4, 2019
  33. math

    Four friends shared a candy bar. The first friend ate 1/4 of the candy bar, the second friend ate 1/3 of the candy bar, and the third friend ate 1/6 of the candy bar. How much of the candy bar did the fourth friend eat? (Leave your answer as a fraction in

    asked by tyler on September 6, 2016
  34. math

    I really need help to find the answer to this question below. If possible, please show every step of the way in a detailed form so i can understand, it takes me a while to fully comprehend whats being done. Thank you so much. QUESTION: the data shown model

    asked by sarah on July 27, 2015
  35. Math

    I really need help to find the answer to this question below. If possible, please show every step of the way in a detailed form so i can understand, it takes me a while to fully comprehend whats being done. Thank you so much. QUESTION: the data shown model

    asked by Yoyo on July 28, 2015
  36. Math

    I really need help to find the answer to this question below. If possible, please show every step of the way in a detailed form so i can understand, it takes me a while to fully comprehend whats being done. Thank you so much. QUESTION: the data shown model

    asked by PLEASE HELPP on July 28, 2015
  37. Philosophy

    1. Watch out for metaphysics in searching for these answers: metaphysics depends on a magical intrepretation. 2. This link will get you started on these classical questions.

    asked by bobpursley on May 31, 2007
  38. Chemistry

    In a particular redox reaction, BrO– is oxidized to BrO3– and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution. Two half reactions: 1.) Cu^2+ --> Cu^+ 2.) BrO^- --> BrO3^- Balanced: 1.) Cu^2+ +e^- --> Cu^+

    asked by miaow on April 15, 2012
  39. SCience

    After watching the Farmers and their Lost Dreams: The Dust Bowl Years video segment, reflect back on the stories of two American farming families as they struggled to survive the dust storms that overtook the plains Write a paragraph in reaction to what

    asked by URGENT HELP on March 2, 2017
  40. math help

    The number of trucks registered in a city increases by 10% each year. Initially, there were 100 trucks registered. There were 110 trucks registered at the end of Year 1. What is the number of trucks registered in the city at the end of Year 8? how do i

    asked by sammiexo on May 31, 2017
  41. Math

    Jason has already used 3 1/1 cans of paint painting furniture. He is painting chairs that use 8 1/1 cans of paint. Let the total cans of paint used be represented by p. Let the number of chairs painted be represented by c. An equation that represents this

    asked by Please help on February 11, 2019
  42. Math

    Steady Tortoise stated crawling from Woody Woods to Fresh Forest at 7:30 a.m. Sprightly Rabbit left Woody Woods for Fresh Forest at 8:00 a.m. and caught up with Steady Tortoise at 10:00 a.m. Rabbit reached Fresh Forest at 11:00 a.m. When will Tortoise

    asked by Shaba-laba-ding-dong on December 12, 2008
  43. Math

    Is this correct? Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 60 miles per hour and train B is traveling at 80 miles per hour. Train A passes a station at 3:25pm. If train B passes the same station at

    asked by Shawna on April 28, 2008
  44. Math

    the minute hand of the tower clock is 12 inches long and the hour hand is 9 inches long. on this clock what is the positive difference between the number of inches traveled by the tip of the minute hand and the tip of the hour hand in one hour? express

    asked by Kathy on June 28, 2018
  45. Math

    A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off)

    asked by Alana on September 12, 2014
  46. math

    Here it is: One night the palace was having a midnight snack. The king ate 1/6 of the mangoes. The Queen ate 1/5 of the remaining mangoes. The 1st prince ate 1/4 of the mangoes left. Then the 2nd prince ate 1/3 of the remaining mangoes. And the third

    asked by Kalley on September 5, 2007
  47. math

    A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off)

    asked by Barbara on September 11, 2014
  48. math

    A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off)

    asked by Tish on September 11, 2014
  49. math

    A plane leaves Chicago headed for Los Angeles at 520 mph. One hour later, a second plane leaves Los Angeles headed for Chicago at 620 mph. If the air route from Chicago to Los Angeles is 1800 miles, how long will it take (after the first plane takes off)

    asked by Alana on September 12, 2014
  50. Spanish

    Invierno tardio No es increíble cuanto ven mis ojos: nieva sobre el almendro florido, nieva sobre la nieve. Este invierno mi ánimo es como una primavera temprana, es como un almendro floroido bajo la nieve. Hay demasiado frío esta tarde en el mundo.

    asked by Larry on April 5, 2009
  51. Math

    The probability of being attacked by a shark is approximately 1 in 4,000,000. The probability of being struck by lightning is approximately 1 in 80,000. How many times more likely is it to be struck by lightning than attacked by a shark? a. 5 Selected: b.

    asked by . on September 30, 2015
  52. Calculus

    The base of a solid is the region bounded by the lines y = 5x, y = 10, and x = 0. Answer the following. a) Find the volume if the solid has cross sections perpendicular to the y-axis that are semicircles. b) Find the volume if the solid has cross sections

    asked by Jessica on June 23, 2016
  53. physics help please!

    A race car is one lap behind the lead race car when the lead car has 57 laps to go in a race. If the speed of the lead car is 66.2 m/s, what must be the average speed of the second car to catch the lead car just before the end of the race (i.e., right at

    asked by Amanda on September 3, 2012
  54. math

    Multiple choice question. Describe all symmetries of a square. A) 2 lines of reflectional symmetry B) 2 lines of reflectional symmetry, 180 degree rotational symmetry C) 4 lines of reflectional symmetry D) 4 lines of reflectional symmetry, 90 degree

    asked by m on January 6, 2011
  55. Math

    A man left 3/7 of his money to his wife, 1/2 of the remainder to his brother, and the rest he divided equally among his three children. If each of his children received $400, how much did his wife receive? I did this: Let the money be: x Wife received:

    asked by Samiya on December 3, 2016
  56. Chemistry

    A driving bell is a container open at the bottom. As the bell descends, the water level inside changes so that the pressure inside equals the pressure outside. Intially the volume of air is 8.58m^3 at 1.020 atm and 20 degrees C. What is the volume at 1.584

    asked by Lauren on October 23, 2007
  57. Algebra

    Can somebody help me find the slope? Examine the rise in gasoline prices from 1997 to 2006. The price of regular unleaded gasoline in January 1997 was $1.26 and January 2006 the price of regular gasoline was $2.31. (Bureau of Labor Statistics, 2006). Use

    asked by A.W. on March 1, 2009
  58. geometry

    Question 1.1. For each of the following questions, choose the correct answer. What is another word for rotation? (Points : 1) flip turn slide fall Question 2.2. What's another word for a translation? (Points : 1) flip turn slide fall Question 3.3. Maria

    asked by Ash on September 13, 2014
  59. Physics

    For the situation: "A moving crate slides to a halt on a rough surface" Does temperature increase, decrease, or not change? Are work and heat positive, negative, or zero? Does thermal energy increase, decrease, or not change? My answer key says temperature

    asked by Courtney on November 16, 2014
  60. physics

    A locomotive is pulling an empty freight car with a constant acceleration on a horizontal surface. The mass of the locomotive is five times the mass of the car. Which statement is true about the force applied by the car on the locomotive? A. 5x greater

    asked by bub on January 13, 2019
  61. math

    Question 1.1. For each of the following questions, choose the correct answer. What is another word for rotation? (Points : 1) flip turn slide fall Question 2.2. What's another word for a translation? (Points : 1) flip turn slide fall Question 3.3. Maria

    asked by Ash on September 13, 2014
  62. Biology

    How do scientists calibrate a molecular clock? A)They determine the number of mutations accumulated in a gene of a species of known age. B)They compare the ticking of the molecular clock with that of the atomic clock. C)They use the clock that ticks at the

    asked by Corie on January 22, 2013
  63. Precalculus

    The volume V(t) of air (in cubic inches) in an adult's lungs t seconds after exhaling is approximately. (Do not use mixed numbers in your answer.) V(t)= 53+28.5sin(pie(t)/2-pie/2) (a) Find the maximum and minimum amount of air in the lungs. Maximum is

    asked by Max on November 21, 2010
  64. Algebra

    Is this right?2. Examine the rise in gasoline prices from 1997 to 2006. The price of regular unleaded gasoline in January 1997 was $1.26 and in January 2006 the price of regular unleaded gasoline was $2.31 (Bureau of Labor Statistics, 2006). Use the

    asked by Anonymous on June 18, 2008
  65. PHYSICS!!!

    To simulate the extreme accelerations during launch, astronauts train in a large centrifuge. If the centrifuge diameter is 13.5m , what should be its rotation period to produce a centripetal acceleration of If the centrifuge diameter is 13.5m , what should

    asked by Amy on September 14, 2013
  66. Physics

    An astronaut is taking a space walk near the shuttle when her safety tether breaks. What should the astronaut do to get back to the shuttle? Answer: Take a tool from her tool belt and throw it away from the shuttle. Next Question:Assuming that the

    asked by Anonymous on October 13, 2009
  67. calculus

    Find complete length of curve r=a sin^3(theta/3). I have gone thus- (theta written as t) r^2= a^2 sin^6 t/3 and (dr/dt)^2=a^2 sin^4(t/3)cos^2(t/3) s=Int Sqrt[a^2 sin^6 t/3+a^2 sin^4(t/3)cos^2(t/3)]dt =a Int Sqrt[sin^4(t/3){(sin^2(t/3)+cos^2(t/3)}]dt=a Int

    asked by ms on September 18, 2013
  68. Calculus

    Please look at my work below: Solve the initial-value problem. y'' + 4y' + 6y = 0 , y(0) = 2 , y'(0) = 4 r^2+4r+6=0, r=(16 +/- Sqrt(4^2-4(1)(6)))/2(1) r=(16 +/- Sqrt(-8)) r=8 +/- Sqrt(2)*i, alpha=8, Beta=Sqrt(2) y(0)=2, e^(8*0)*(c1*cos(0)+c2*sin(0))=c2=2

    asked by COFFEE on July 10, 2007
  69. Physics

    2. A pool has an area A = 50 m2 and depth h = 2.5 m. The pool is filled with water to the maximum height. An electrical pump is used to empty the pool. There are two pipes coming out the pump: one is submerged into water has a radius r1 = 4 cm the other

    asked by Sean on April 13, 2012
  70. ALGEBRA

    The costs of doing business for a company can be found by adding fixed costs, such as rent, insurance, and wages, and variable costs, which are the costs to purchase the product you are selling. The portion of the company’s fixed costs allotted to this

    asked by AMERICAN GIRL on June 23, 2011
  71. Finance

    You find the following Treasury bond quote. To calculate the number of years until maturity, assume that it is currently May 2016. The bonds have a par value of $1,000. Rate Maturity Mo/YR Bid price Ask price Chg Ask Yld 5.374 May 30 104.4991 104.6448

    asked by Ethan on July 23, 2018
  72. physics

    You let out a shout, echo comes back and reaches you in 1.4 seconds. if the speed of sound in air is 343 m/s, what is the distance to the cliff? a. need assitance in setting up problem? Let d be the distance to the cliff, and V be the speed of sound. The

    asked by tim on September 3, 2006
  73. Elem. Ed.

    b and c, don't you think? the teacher explains and the children practice what has been explained my experience leads to me to the conclusion that actual practice is the best learning technique. I vote for c. sounds good Can you help me with this question?

    asked by jules on April 17, 2007
  74. Math: Equivalence Classes

    Let R be the relation on ℤ+×ℤ+ defined by (a,b)R(c,d) if and only if a−2d=c−2b. 1. Find an equivalence class that has exactly 271 elements. 2. Is it true that for every positive integer n, there is an equivalence class that contains exactly n

    asked by procrastinationEquation on August 14, 2014
  75. Chemistry

    Fluorine reacts with oxygen to yield oxygen difluoride. 2 F2(g) + O2(g) 2 OF2(g) What is the value of K if the following concentrations are found at equilibrium: [O2]= 0.200 mol/L, [F2]=0.0100 mol/L, and [OF2]=0.0633 mol/L Chemistry - DrBob222, Thursday,

    asked by Sally on March 2, 2012
  76. Math

    The air pressure in a tire is 800.000kPa.The internal surface area of the tire is 550.000cm^2. Determine the total force applied by the air to the tire. (Round to 3 decimal places). ANS = 44.000kN Force = Pressure x Area = 800.000kPa x 550.000 =

    asked by Danny on December 26, 2013
  77. chemistry - titration

    Show that for the titration of a weak acid, HA, with NaOH solution, at half-titer, pH = pKa. Please explain your answer. Thank you. HA + NaOH ==> NaA + HOH Ka for HA = (H^+)(A^-)/(HA) and solve for H^+. (H^+) = Ka*[(HA)/(A^-) When HA is half neutralized,

    asked by phil on August 5, 2007
  78. sexual development

    32. What happens to the sexual development of a fetus (genes not specified) that is exposed to lower than the normal amounts of both testosterone and estrogen during early development? a. It develops a more or less normal male appearance b. It develops a

    asked by me on October 28, 2007
  79. Science

    Hello again, I'm really sorry... We were learning about pH scales, bases, and acids. It was kind of hard in a way but it was alright, I'm kind of in the hang of it now. But this question really stumps me. "Why is it important for the pH of blood to remain

    asked by Hatsune Miku on January 31, 2017
  80. income tax

    For 2011, Jorge, a single father, reported the following amounts relating to his investments: Net investment income from interest $7000 Interest expense on a loan to purchase stocks $2000 Interest expense on funds borrowed in 2010 to purchase land for

    asked by Lourane on November 25, 2012
  81. Psychological stats

    I need help with a unique null hypothesis that I would then be able to use a t test statistical analysis,the same hypothetical situation taken in the t test hypothesis, and turn it into a null hypothesis using a one-way ANOVA analysis and a two-way ANOVA.

    asked by Vanessa on September 20, 2013
  82. Chemistry

    Given the reactant side of the total ionic equation for the neutralization reaction of ammonium hydroxide (NH4OH) with hydrochloric acid (HCl), write the total ionic equation (also known as the complete ionic equation) by entering both the reactant and the

    asked by Prosperity on December 2, 2017
  83. Math

    (4.44e-2 - x) (8.06e-2 - x) / (0.331 + 2x)^2 = 1.80e-2 I need to rearrange this equation so that I can get a,b, and c, for the quadratic equation but I am not sure how to do this. Thank you for the help. Math(Please answer, thank you) - bobpursley, Sunday,

    asked by Hannah on March 25, 2012
  84. Physics HELP

    1.If a particle moves in a plane so that its position is described by the functions x=A*cos(wT) and y=A*sin(wT), the particle is ( w-angular velocity, T-period) A) moving with constant speed along a circle B) moving with a varying speed along a circle

    asked by Kelly on May 13, 2007
  85. maths

    The ‘body mass index’ is used to find the body weight that is appropriate for a person’s height. It is calculated using the formula. I = W/H^2 Where I is the body mass, W is the person’s weight in kg, and H is the person’s height in metres. Use

    asked by katie on May 9, 2007
  86. Math

    The equation of the motion of a body suspended by a spring is T=2π√m/k, where T is the time period, m is the mass of the body, and k is the force constant of spring. use this information to find the time period if a body of mass 10 kg is suspended by a

    asked by Jourrapide on September 18, 2016
  87. Chemistry

    I'm going crazy please help me out part 1 of 2 Determine the mass of anhydrous copper(II) sulfate that must be used to prepare 250 mL of 2.01 M CuSO4(aq). Which i found to be 80.204g part 2 of 2 Determine the mass of CuSO4.5H2O that must be used to prepare

    asked by ninzyy on September 5, 2011
  88. Physics

    Calculate the force of gravity between a newborn baby of mass 4 kg and the obstetrician of mass 75 kg, who is 0.5 m from the baby. N Which exerts more gravitational force on the baby, Mars or the obstetrician, given that Mars has a mass of 6.4 1023 kg and

    asked by Sharvani on October 25, 2012
  89. Math

    In a marketing survey involving 1,000 randomly chosen people, it is found that 630 use brand P, 420 use brand Q, and 210 use both brands. How many people in the survey use brand P and not brand Q? Answer choices: 210 people 420 people 630 people none of

    asked by M on March 22, 2015
  90. physics

    Two charges, qA and qB, are separated by a distance, d, and exert a force, F, on each other. Analyze Coulomb's law and answer the following questions. (a) What new force will exist if qA is doubled? (b) What new force will exist if qA and qB are cut in

    asked by Billy on March 20, 2013
  91. Sixth Grade Math

    Last year, Mark was 46 inches tall. This year, Mark's height is 3 inches less than Pter's height. Peter is 51 inches tall. How tall is Mark? Write an equation to represent the situation. Then solve the equation. Answer: 51-3=I I=48 inches tall I=number of

    asked by Javonte on January 14, 2015
  92. Math

    The concrete for a sidewalk is being poured outside the perimeter of a new subdivision, which is a 280 ft. by 720 ft. rectangle. The building code requires that the sidewalk be 5 feet wide and 8 inches deep. How many cubic yards of concrete will need to be

    asked by Maria on August 29, 2015
  93. physics

    A 2.00 kg frictionless block is attached to a horizontal spring as shown. At t = 0, the position x = 0.225 m, and the velocity is 4.25 m/s toward the right in the positive x direction. Position x as a function of t is: x = A*cos(ωt ) , where A is the

    asked by toby on December 4, 2012
  94. Physics

    A 24.00 kg block at rest on a horizontal frictionless air track is connected to the wall via a spring. The equilibrium position of the mass is defined to be at x=0. Somebody pushes the mass to the position x=0.3500 m, then lets it go. The mass undergoes

    asked by Liz on November 8, 2014
  95. Calculus

    A company manufactures x units of one item and y units of another. The total cost in dollars, C, of producing these two items is approximated by the function C=7x^2+xy+1y^2+600. A) If the production quota for the total number of items (both types combined)

    asked by A on October 18, 2015
  96. Social Studies

    how do you make a riddle? Thank you for using the Jiskha Homework Help Forum. There actually is a Website for how to make a riddle: 1. http://www.catb.org/~esr/riddle-poems.html This is an answer from Jiskha earlier: 2.

    asked by Anonymous on March 21, 2007
  97. Physics

    "A small 0.5 kg object moves on a frictionless horizontal table in a circular path of radius 1 meter. The angular speed is 6.28 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the

    asked by Seth on April 3, 2011
  98. physics

    "A small 0.5 kg object moves on a frictionless horizontal table in a circular path of radius 1 meter. The angular speed is 6.28 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the

    asked by Seth on April 1, 2011
  99. Physics. Please help

    A 3.00 kHz tone is being produced by a speaker with a diameter of 0.175 m. The air temperature changes from 0 to 29°C. Assuming air to be an ideal gas, find the change in the diffraction angle My solution v directly proportional to sqrt T v = sqrt 302

    asked by Papito on May 5, 2007

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