1. Physics

    A ball swings in a vertical circle at the end of a rope 1.50 m long. When the ball is 35.9° past the lowest point on its way up, its total acceleration is (-22.5 i + 20.2 j)m/s^2. Find radial acceleration?

    asked by Zach on September 17, 2011
  2. Physics

    A car of mass 550kg accelerates steadily from rest to 25m/s in 30s. a). What is its acceleration? b). What resultant force produces this acceleration? c). The actual force will be greater, why?

    asked by OHara on June 7, 2013
  3. physics

    A jumbo jet needs to reach a speed of 369 km/hr on the runway for takeoff. Assuming a constant acceleration and a runway 1.6 km long, what minimum acceleration from rest is required?

    asked by Dhruv on November 11, 2013
  4. Physics

    A body moving with uniform acceleration covers 64.4 m in 7s and 110 m in 10s. Find its initial velocity and acceleration. Okay, I know how to solve this, however, i'm not quite sure which equation i'm supposed to use. Am I going to need 2 equations to

    asked by Mellissa on December 14, 2014
  5. Chemistry

    A chemist performs an acid–base titration using 0.176 M aqueous NaOH as the titrant with 26.15 mL of 0.102 M H2SO4. The endpoint of the titration is detected using phenolphthalein as the indicator. Some acid–base indicators are listed along with their

    asked by Onye on March 5, 2018
  6. Physics

    A car accelerates in the +x direction from rest with a constant acceleration of a1 = 1.76 m/s2 for t1 = 20 s. At that point the driver notices a tree limb that has fallen on the road and brakes hard for t2 = 5 s with a constant acceleration of a2 = -5.93

    asked by Uwais on February 1, 2017
  7. Maths

    The Giant Ferris Wheel has a radius of 30meters. Assuming that a time t= t_0 , the wheel rotates counterclockwise with a speed of 40m/min, and is slowing at a rate of 15m/min^2 . Find acceleration vector for a person seated in a car at the lowest point of

    asked by Thongfye on April 11, 2012
  8. Math

    A business woman intends to rent a car for a 3 day business trip. The rental is $65 a day and $.15 per mile (plan 1) or $90 a day with unlimited mileage (plan 2). She is not sure how many miles she will drive but estimates that it will be between 400 and

    asked by Anonymous on December 10, 2015
  9. Economics

    An industry currently has 100 firms, all of which have fixed costs of $16 and avg. variable cost as follows: Q Avg. Variable Cost ($) 1 1 2 2 3 3 4 4 5 5 6 6 a. Compute marginal cost and avg. total cost. b. the price is $10. what is the total quantity

    asked by Maggie on December 13, 2006
  10. Science

    A force of 400 N gives a mass (m1) an acceleration of 2 m/s^2. The same force gives another mass (m2) an acceleration of 13 m/s^2. What acceleration will this same force give if m1 and m2 are fastened together?

    asked by L on January 10, 2017
  11. Neutons Thrid law

    3. A force of 36 N gives a mass m1 an acceleration of 4.0 m/s2. The same force gives a mass m2 an acceleration of 12 m/s2. What acceleration will this force give to m1 and m2 if the two masses are fastened together? {3.0 m/s2}

    asked by Jen on April 8, 2016
  12. Physics

    A 42-kg box slides down a frictionless inclined plane. The angle of the inclined plane is 34.0 degrees. The distance from the box to the bottom of the inclined plane is 3 m. Draw the free body diagram of the force vectors acting on the box. Determine: a.

    asked by Anonymous on November 29, 2016
  13. More Chemistry

    I have the answers, I just want to be sure...I'm a little hesitant.. 1. Explain how strong acid solutions conduct an electric current: -Strong acids readily release ions creating electro negativity. 2. Will a strong acid or weak acid conduct electricity

    asked by Liz on February 16, 2007
  14. Physics

    A car of mass 1000kg is travelling along a straight flat road at a constant speed of 30.0ms^-1. It then accelerates with constant acceleration of 3.00ms^-2 for 10.0s, after which it continues to travels at a constant speed. Determine: (a) The final speed

    asked by Saphina Almatary on October 17, 2016
  15. chemistry

    Calculate the pH from the addition of 10 mL of a 0.10 M NaOH solution to 90 mL of 0.10 M HCl. okay so i understand how to do most of it but i get messed up at one part.. so i made my equation: NaOH + HCl -> H2O + NaCl (strong base, strong acid= complete

    asked by BOB PLEASE HELP!:) on November 9, 2011
  16. David L

    When economists say that health care services are overconsumed, they mean that: A. rich people buy too much health care and poor people buy too little. B. some resources now used in the health care industry could produce alternative goods and services that

    asked by Economics on June 11, 2008
  17. math (algerba 1) Please help!

    In basketball you score 2 points for a field goal and 1 point for a free throw. Suppose that you have scored at least 3 points in every game this season, and have a season high score of 15 points in one game. How many field goals and free throws could you

    asked by annie on January 19, 2013
  18. ALGEBRA 1 PLEASE HELP! I DONT UNDERSTAND

    In basketball you score 2 points for a field goal and 1 point for a free throw. Suppose that you have scored at least 3 points in every game this season, and have a season high score of 15 points in one game. How many field goals and free throws could you

    asked by annie on January 20, 2013
  19. LA

    What was the Supreme Court's ruling on the Dred Scott case? Dred Scott should be considered free since he had lived in many states where slavery was banned. Dred Scott could be free if he paid a fee. Dred Scott was still a slave and not a citizen. The case

    asked by jeff on April 10, 2013
  20. biochemistry

    when a reaction AB starts, there is three times as much product as reactant. When it reaches equilibrium, there is twice as much product as reactant. Show how to calculate the standard change in gibbs free energy for this reaction. I did it but I'm not

    asked by Jennifer on November 20, 2009
  21. physics

    Consider the motion of an object along a straight path as shown in the figure. 1 0 1 2 3 4 5 6 7 8 9 b b b b b b b b time (s) velocity (m/s) Find the average acceleration during the time interval 0 s to 3 s. Answer in units of m/s 2 005 (part 2 of 6) 10.0

    asked by Anonymous on January 17, 2013
  22. Physics

    A car starts from rest and accelerates at a rate of 1 m/s^2 until it reaches a velocity of 7 m/s. It then travels at a constant velocity for the next 15 seconds. The driver then applies the brake, bringing the car to stop. The brakes provide an

    asked by Ulash on September 14, 2014
  23. Physics

    A wheel with radius of 25cm turning at 120 rpm uniformly increases its frequency to 660 rpm in 9s. Determine: i) the centripetal acceleration ii)the total acceleration of the system

    asked by alice on June 15, 2014
  24. physics

    a car moving at 22.0 m/s strikes a large tree and comes to rest in a distance of 1.55m. assuming negative acceleration. what is the time needed to stop the car? what is the average acceleration

    asked by Anonymous on November 15, 2013
  25. physics

    Landing with a speed of 78.3 m/s, and traveling due south, a jet comes to rest in 959 m. Assuming the jet slows with constant acceleration, find the magnitude and direction of its acceleration.

    asked by stoic-rider77 on August 31, 2012
  26. physics

    A ball on the end of a string is moving in a horizontal circle. If the centripetal acceleration of the ball is 12 m/s2, while it is travelling at 3.0 m/s, what would the acceleration be if its speed increased to 4.0 m/s. Assume that the radius of rotation

    asked by grey on June 3, 2014
  27. Physics

    The velocity of a train reduced uniformly from 15 m/s to 7 m/s while traveling a distance of 90 m. a)compute the acceleration b) How much farther will the train travel before coming to rest, provided the acceleration remains constant?

    asked by Anonymous on September 18, 2012
  28. physics

    Landing with a speed of 78.3 m/s, and traveling due south, a jet comes to rest in 959 m. Assuming the jet slows with constant acceleration, find the magnitude and direction of its acceleration.

    asked by stoic-rider77 on August 30, 2012
  29. Physics Help!!!!

    Describe what it means (describe the motion) if the acceleration vector has the same direction as the velocity vectors, and what it means if the acceleration vector has the opposite direction as the velocity vectors. Consider all four possibilities and

    asked by Layla on September 6, 2014
  30. Physics Help!!!!

    Describe what it means (describe the motion) if the acceleration vector has the same direction as the velocity vectors, and what it means if the acceleration vector has the opposite direction as the velocity vectors. Consider all four possibilities and

    asked by Layla on September 6, 2014
  31. MATH

    The following data represent the asking price of a simple random sample of homes for sale. Construct a 99% confidence interval with and without the outlier included. Comment on the effect the outlier has on the confidence interval. Here is the information:

    asked by LADO on December 1, 2014
  32. science

    whether or not we as humans should be concerned with the extinction rate. Additionally, discuss whether or not humans strive to preserve representative samples of all biomes on the planet.

    asked by Anonymous on June 15, 2013
  33. math

    it takes the planet Neptune about 164.8 years to revolve once around the sun. What is the least and the greatest numbers written in hundredths that could round to 164.8?

    asked by natalya on September 26, 2012
  34. Jacques Cousteau

    The Antartica is the vast source of cold on our planet,just as the sun is the source of our heat, and it exerts tremendous control on our climate. How would I paraphrase that

    asked by Anonymous on November 9, 2010
  35. science

    hypothesize- mercury is the closest planet to the sun, yet it does not reflect much of the sun's light. what can you say about its color? can you please explain the question and answer it -thanks in advance

    asked by sally on November 26, 2010
  36. math

    It takes the planet Neptune about 164.8 years to revolve once around the sun.What are the least and greatest numbers written in hundredths that could round to 164.8?

    asked by Jahzara on September 22, 2012
  37. math

    Thank you so much!! Nicky is a 60% free-throw shooter in a two-shot free-throw situation. Is she likely to score 0 points, 1 point, or 2 points? can you please explain to me how to get the answer. Assuming each shot is an independent event.. Pr(0)=.4*.4 Pr

    asked by Amaris on May 22, 2007
  38. physics

    Starting from rest, you move with a constant acceleration of 1.2 m/s2 for 12.0 s and then move with an acceleration of -1.2 m/s2 for another 12.0 s. What is your maximum speed attained?

    asked by john on September 24, 2009
  39. physics

    An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.97 cm. If its x-coordinate 2.95 s later is −5.00 cm, what is its acceleration?

    asked by Johna on October 2, 2011
  40. Science

    a cyclist accelerates from rest to 8 m/s in 3 seconds. what in his acceleration? is this acceleration higher than that of a car which accelarates from 0 to 40 m/s in 8 seconds? WO

    asked by Don f. javier on November 10, 2014
  41. physics

    An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.97 cm. If its x-coordinate 2.95 s later is −5.00 cm, what is its acceleration?

    asked by Johna on October 2, 2011
  42. physics

    An object moving with uniform acceleration has a velocity of 15.0 cm/s in the positive x direction when its x coordinate is 3.00 cm. If its x coordinate 1.60 s later is -5.00 cm, what is its acceleration?

    asked by Zohal on September 6, 2011
  43. physics

    An object moving with uniform acceleration has a velocity of 10.0 cm/s in the positive x-direction when its x-coordinate is 2.91 cm. If its x-coordinate 1.85 s later is −5.00 cm, what is its acceleration?

    asked by lol on August 29, 2018
  44. Physics

    An object moving with uniform acceleration has a velocity of 10.0 cm/s in the positive x-direction when its x-coordinate is 2.91 cm. If its x-coordinate 1.85 s later is −5.00 cm, what is its acceleration?

    asked by Doug on August 30, 2018
  45. physics

    An object moving with uniform acceleration has a velocity of 15.0 cm/s in the positive x direction when its x coordinate is 3.00 cm. If its x coordinate 1.60 s later is -5.00 cm, what is its acceleration?

    asked by Zohal on September 6, 2011
  46. Physics

    Whats the difference between uniform acceleration graph and a constant acceleration graph? Both graphs look the same and I can differentiate them...

    asked by Lewis on October 7, 2012
  47. physics

    a car starts from rest it reaches a velocity of 12 m/s in 6 second. a. what is its acceleration ? b. if its acceleration remains the same what will be its velocity after 10 seconds?

    asked by jazzy mae on December 3, 2014
  48. Physics

    Whats the difference between uniform acceleration graph and a constant acceleration graph? Both graphs look the same and I can differentiate them...

    asked by Lewis on October 7, 2012
  49. Physics

    An object moving with uniform acceleration has a velocity of 10.0 cm/s in the positive x-direction when its x-coordinate is 2.91 cm. If its x-coordinate 1.85 s later is −5.00 cm, what is its acceleration?

    asked by Doug on August 30, 2018
  50. Physics

    A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 24 m/s west, and the total acceleration of the car is 2.5m/s^2 53 degrees north of west. Find the radial and tangential components of the acceleration of the car at

    asked by Whitney on September 23, 2011
  51. science

    What is the equatorial circumference of Saturn the planet example: (C=3.14 x radius x radius)

    asked by Kimberlea on April 18, 2013
  52. Science

    1)Newton's laws of motion are concerned with relationships among a) force, mass and motion b) Displacement, mass and acceleration c) Velocity, fore and acceleration d) mass, acceleration and velocity I feel that thay deal with force, mass and motion which

    asked by hello on January 27, 2010
  53. Chemistry...Please Help

    The Chemicals are: Baking Soda- NaHC03 Calcium Chloride- CaCl2 Bromothymol Blue - (acid base indicator) _______________________________________ What is: (a) The equations for the dissolution of calcium chloride and sodium bicarbonate in water (b) Look up

    asked by Saira on January 7, 2009
  54. Microeconomics

    Quantity Total Cost (Dollars) Variable Cost (Dollars) 0 $1,000 $0 100 1,360 360 200 1,560 560 300 1,960 960 400 2,760 1,760 500 4,000 3,000 600 5,800 4,800 Table 11-1 shows the short-run cost data of a perfectly competitive firm that produces plastic

    asked by Taneja on November 21, 2009
  55. Help Math PLZ

    6. George Washington warned that political parties would (1 point) divide the nation. create lively debate.* help the nation. destroy states' rights. 7. Federalists believed in (1 point) free trade. state banks.* a national bank. rule by the people. 8.

    asked by YOLO on November 22, 2015
  56. physics (newton's laws)

    A 5.00 kg object placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fasted to a hanging 9.00 kg object. Find the acceleration of the two objects and the tension in the string. First, there is just one

    asked by Eric (please help me) on February 20, 2007
  57. BOBPURSLEY or anyone

    h t t p : / / w w w . j i s k h a .c o m / d i s p l a y . c g i ? i d = 1 25 2 8 8 8 9 2 9 ok hmmm m2 g = m1 (acceleration radial) so then if this is the correct equation my question... is how do you know when to consider the masses as a system and when

    asked by AP Physics B on September 14, 2009
  58. English

    1. Don is as strong as Bill. 2. Don is much stronger than Bill. 3. Don is a little stronger than Bill. 4. Don is somewhat stronger than Bill. 5. Don is less strong than Bill. 6. Don is much the best strongest of the three. 7. Don is the very best strongest

    asked by rfvv on March 1, 2010
  59. Physics

    Starting from rest, a disk rotates about its central axis with constant angular acceleration. In 6.00 s, it rotates 28.0 rad. During that time, what are the magnitudes of (a) the angular acceleration and (b) the average angular velocity? (c) What is the

    asked by S.Jacob on November 25, 2011
  60. Ethics and Tech

    Computer simulations can: A. accurately predict the weather a month in advance. B. save automobile manufacturers time and money as they develop new cars. C. prove our planet is overpopulated. D. All of the above Im confused between A and D

    asked by Amy on April 21, 2015
  61. Physics

    A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?

    asked by Michelle on February 17, 2014
  62. Physics

    A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?

    asked by Michelle on February 20, 2014
  63. Physics

    A ball is thrown upward in two dimensions with an initial speed of 17 Zlugs per mega handle(made up) near the surface of the planet earth. What will be the y component of the balls velocity at the peak of its trajectory?

    asked by Michelle on February 20, 2014
  64. Precalculus

    I don't even how to go about this.... Mars is in an elliptical orbit with the Sun at one focus, as shown in the figure. At its aphelion, Mars is 156 million miles from the Sun. At its perihelion, Mars in only 128 million miles from the Sun. How long is the

    asked by Anon on January 20, 2012
  65. physics

    A coin with a diameter of 1.9 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 19 rad/s and rolls in a straight line without slipping. The rotation slows with an angular acceleration of magnitude 2.1

    asked by help on September 27, 2010
  66. social studies

    please help... Why did the Roman Empire fall?

    asked by brandi on April 23, 2016
  67. math

    in which stem do most of the data fall 1 ,2 3, or 4

    asked by eric on October 7, 2016
  68. social studies

    what is the over all California Fall climate?

    asked by alyssa on August 27, 2009
  69. Math

    What mixed numbers fall between 5 and 6? 5 - - - - 6

    asked by Lew on March 5, 2010
  70. Career guidance

    Which career fall under the subjects?

    asked by Kabelo on October 21, 2018
  71. Physics

    In what sense do the moon fall?

    asked by Morgan on April 3, 2018
  72. science

    How do you think objects will fall when there is no air

    asked by matt on May 2, 2012
  73. Science

    What is comet how it fall and why he look blue

    asked by Vivek on February 25, 2012
  74. Venezuela

    why did this country fall into dictatorship

    asked by Anonymous on May 5, 2015
  75. science

    how much work was accomplished by the fall?

    asked by raul on January 9, 2013
  76. Chemistry

    Given that the structures of cocaine (on the right side of the equation) and its free base ( on the left side) with an H+ : a. Would you expect K for the cocaine to be greater or less than 1.0? Explain. b. Would K for the free base be higher or lower than

    asked by Amber on April 13, 2014
  77. CHEMISTRY

    Given that the structures of cocaine (on the right side of the equation) and its free base ( on the left side) with an H+ : a. Would you expect K for the cocaine to be greater or less than 1.0? Explain. b. Would K for the free base be higher or lower than

    asked by Amber on April 13, 2014
  78. Compare & Contrast

    Essay ideas? It needs to be 800 words. The two things must be similar at face value, but have differences between them. Help?

    asked by Kat on July 29, 2008
  79. Algebra 2

    What is the first term of a geometric series with a summation of 800, 4 terms and a common ratio of 3?

    asked by Greg on April 11, 2012
  80. Algebra

    Find the simple interest on an investment of $800 at a rate of 2.5% per year after 9 months.

    asked by Steve on August 30, 2016
  81. ALG 2

    What is the first term of a geometic series with a summation of 800, 4 terms and a common ratio of 3?

    asked by Embraced on January 25, 2012
  82. FIN/370

    To what amount will $ 4,800 invested for ten years at 9% compounded annually accumulate?

    asked by Terrell Reid on March 17, 2014
  83. math

    Larry borrowed $800.00 at 6% for one in a half years?Explain and solve the problem.

    asked by Eilundra on November 20, 2015
  84. math

    find the interest for the loan principal rate time $1,800 6 1/2% 3 3/4 years

    asked by Anonymous on August 31, 2011
  85. Finance

    What is the present value of $3,800 at 8.9 percent compounded monthly for five years. Thurs far, I have P= ?/(1+i)n (1 + 0.89/12)12*5 (1.0074167)60

    asked by Jill on May 13, 2014
  86. physics

    Assume the resistance values are R1 = 2,800 Ω, R2 = 1,500 Ω, R3 = 4,400 Ω, and the battery emf is 1 = 1.3 V.

    asked by Anonymous on May 23, 2013
  87. Algebra

    Write the following number in scientific notation. 50,800 I thought the answer was 50.8x10^4 Need help

    asked by Sarah on September 12, 2016
  88. chemistry

    What volume will a mixture of 5.00mol of He and 0.800 mol of CO2 occupy at STP?

    asked by toya on November 18, 2012
  89. Algebra 2

    What is the first term of a geometric series with a summation of 800, 4 terms and a common ratio of 3?

    asked by Greg on April 12, 2012
  90. math

    In what time will Rs.1,800 yield simple interest of Rs.390 at the rate of 5% per annum?

    asked by Haroon Gondal on November 9, 2015
  91. chemistry

    What is the resulting concentration when 250.0 mL of 0.65 M Magnesium Sulfate is added to 800.0 mL of water?

    asked by Lisa on May 1, 2015
  92. intermediate algebra

    short answer: convert this number to scientific notation 1,800,000

    asked by swirl on July 9, 2011
  93. chemistry

    What is the minimum volume of 2.00 M HCl necessary to neutralize completely the hydroxide in 800.0 mL of 0.3 M NaOH?

    asked by carol on November 29, 2012
  94. Maths

    Using a cramers and guassian elimination method solve this; a+2b+3c=600 2a+3b+c= 900 3a+b+2c=800

    asked by Omotimehin pelumi on March 6, 2012
  95. Physics

    For a standard production car, the highest road-tested acceleration ever reported occurred in 1993, when a Ford RS200 Evolution went from zero to 26.8 m/s (60 mi/h) in 3.596 s. Find the magnitude of the car's acceleration.

    asked by Sherlie on September 25, 2016
  96. Physics

    In a physics experiment with an inclined air track, what do you predict about the following: a) Position graph b) Velocity c) Acceleration My ans: For a i predicted there would be a curve and i didn't know why b) velocity will decrease with time but why?

    asked by Nikita on October 28, 2009
  97. CALCULUS

    using d^2(h/dt^2=−g+k(dh/dt^2, find an expression for the terminal velocity in terms of k and g? g is the acceleration due to gravity, k is a constant, h(t) is the height of the falling object, dh/dt is its velocity, and d^2(h)dt^2 is its acceleration.

    asked by Brad on October 7, 2013
  98. physics

    Suppose the centripetal acceleration of the sample is 7.95 x 103 times as large as the acceleration due to gravity. How many revolutions per minute is the sample making, if it is located at a radius of 3.08 cm from the axis of rotation?

    asked by heather on February 24, 2011
  99. Physics

    the speed of the train is reduce uniformly from 15m/s to 7m/s while travelling a distance of 90m. a) compute the acceleration b) how much further will the train travel before coming to rest provided the acceleration remain constant.

    asked by Andrea on December 19, 2011
  100. Angular acceleration

    A racing car accelerates from 50 km per hour to 200 km per hour in 3.0 seconds along a straight track, and the acceleration is constant during this period. If the axles are 40 cm above the road, what is the magnitude of the angular acceleration of the

    asked by Anon on May 24, 2018