1. physics problem

    why are lightweight tires preferred over lightweight frams in bicycle racing?
  2. physics

    why are lightweight tires preferred over lightweight frams in bicycle racing?
  3. physics word problem

    why are lightweight tires preferred over lightweight frams in bicycle racing?
  4. Physics

    The total area of contact between the tires of a racing bicycle and the road is 1.5 square inches. The bicycle and its rider weigh 171 pounds. What is the air pressure inside its tires?
  5. physics

    The total area of contact between the tires of a racing bicycle and the road is 1.5 square inches. The bicycle and its rider weigh 171 pounds. What is the air pressure inside its tires?
  6. Physics

    The total area of contact between the tires of a racing bicycle and the road is 1.5 square inches. The bicycle and its rider weigh 171 pounds. What is the air pressure inside its tires?
  7. physics

    A 83-kg worker clings to a lightweight rope going over a lightweight, low-friction pulley. The other end of the rope is connected to a 66-kg barrel of bricks. If the worker is initially at rest 16 m above the ground, how fast will he or she be moving when he or she hits the ...
  8. physics

    Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone, calculate the total area of the tires in contact with the ground. The bicycle plus rider has a mass of 80.0 kg, and the gauge pressure in the tires is 3.50×105 Pa
  9. math

    Marissa plans to use 50 sheets of paper for a scrapbook. how much thicker will the scrapbook be if she uses heavyweight instead or lightweight paper? 100 sheets of lightweight in thickness is 3/10 in 100 sheets of heavyweight in thickness is 2/5 in.
  10. Principles of Marketing

    Describe the situation that would lead to the use of the three different buying process for a particular product lightweight bumpers for a pickup truck
  11. Math - Probability

    You invent a new system to make excellent racing tires for the Indianapolis 500/ Your tires are good for an average of 105 miles, with a standard deviation of 7.5 miles. What is the probability that one of your tires can go for at least 44 laps? What is the probability that ...
  12. Math

    You invent a new system to make excellent racing tires for the Indianapolis 500/ Your tires are good for an average of 105 miles, with a standard deviation of 7.5 miles. What is the probability that one of your tires can go for at least 44 laps? What is the probability that ...
  13. Physics

    I have to compare and contrast three types of tires, and relate them to physics. I've chosen: <li> Racing tires <li> Winter tires <li> All season tires I've chosen to compare them on: <li> Tire tread pattern <li> Rubber compound <li> ??? As ...
  14. Physics

    A bicycle is racing around on a horizontal surface in a circle of radius 27 m. The force exerted by the road on the bicycle makes an angle of 16 degrees with the vertical. What is its speed?
  15. ap physics

    Two 25.0 g spheres are hanging from lightweight strings that are each 35.0 cm in length. Each has the same charge. They repel each other and make an angle of 5.00 to the vertical. What is the magnitude of the charge on each sphere?
  16. physics

    The gauge pressure in both tires of a bicycle is 720 kPa. If the bicycle and the rider have a combined mass of 87.0 kg, what is the area of contact of each tire with the ground? (Assume that each tire supports half the total weight of the bicycle.)
  17. pre calc

    The front sprocket off a bicycle is 12 centimeters and the rear one is 5 centimeters. What is the linear velocity of the chain around the back sprocket? if the bicycle has tires that have a 38 centimeter diameter, how fast is the bicycle moving?
  18. pre calc

    The front sprocket off a bicycle is 12 centimeters and the rear one is 5 centimeters. What is the linear velocity of the chain around the back sprocket? if the bicycle has tires that have a 38 centimeter diameter, how fast is the bicycle moving?
  19. geometry

    A bicycle tire has a diameter of 24 inches. How many miles will the bicycle travel when the tires make 16,000 revolutions?
  20. physics

    A 1.0-kg mass (mA) and a 7.0-kg mass (mB) are attached to a lightweight cord that passes over a frictionless pulley. The hanging masses are free to move. Find the acceleration of the larger mass
  21. physics

    A 54.0 kg person takes a nap in a (lightweight) backyard hammock. Both ropes supporting the hammock are at an angle of 16.9° above the horizontal. Find the tension in the ropes.
  22. Math

    Kee had to buy 2 tires and patch the tires on his bicycle 3 times this year. How much did he spend repairing his bicycle if these were all the repairs he needed? Use the variablees x and y to write an expression for the cost of kee's repairs. then find the total cost of ...
  23. physics

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.8 kg and m2 = 9.2 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?
  24. physics

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.8 kg and m2 = 9.2 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?
  25. Physics

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 is 3.4 kg and m2 is 9.1 kg, and block 2 is initially at rest 130 cm above the floor, how long does it take block 2 to reach the floor?
  26. IWU

    You are considering buying 27 silver coins that look alike, but you have been told that one of the coins is a lightweight counterfeit. Find the least number of weighings on a balance scale that you can use to be certain you have found the counterfeit coin. Can you explain the ...
  27. physics, only smart people answer

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.4 kg and m2 = 9.0 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?
  28. biology

    Characteristics that give birds the energy they need to fly long distances are a. strong breast muscles and wings. b. aerodynamic feathers and lightweight bones. c. divided ventricle and air sacs in lungs. d. endothermic metabolism and fused bones. C?
  29. physics

    Two block are connected by a lightweight, flexible cord that passes over friction less pulley. If m1=3.6 kg amd m2= 9.2kg, and block 2 is initially at rest 140 cm. above the floor, how long does it take block 2 to reach the floor?
  30. math

    still stuck on this one please help Marissa plans to use 50 sheet of aper for a scrapbook. How much thicker will the scrapbook be if she uses heavyweight (which is 2/5 in for 100 sheets) instead of lightweight paper (which is 3/10 in for 100 sheets)?
  31. Math

    hi! I need help with this question please help! The question is: Each tire of a bicycle has a diameter of 26 inches. if you start pedaling and the tires make 10 complete rotations, how far has the bicycle traveled? Thanks! :]
  32. Physics

    You are riding a bicycle at a speed of 15 m/s. The bycicle has tires with diameters measuring 630 mm. You can approximate each tire as a solid cyllinder (to calculate inertia) with a mass of 0.5 kg. What is the total rotational kinetic energy of the bicycle?
  33. Physics

    You are riding a bicycle at a speed of 15 m/s. The bycicle has tires with diameters measuring 630 mm. You can approximate each tire as a solid cyllinder (to calculate inertia) with a mass of 0.5 kg. What is the total rotational kinetic energy of the bicycle?
  34. Physics

    a 2 kg mass and a 3 kg mass are attached to a lightweight cord that passes over a frictionless pully. the hanging masses are left free to move. a. in what direction will the smaller masses move? b.what will be its acceleration
  35. physics

    Which could potentially cause you the greater injury: being tackled by a lightweight, fast moving rugby league player or being tackled by a player with double the mass but moving at half the speed? Explain your answer
  36. ap physics

    A student rides his bicycle at a constant speed of 2.20 m/s along a straight, level road. If the bike's tires each have a radius of 0.338 m, determine the following. (a) What is the tires' angular speed? rad/s (b) What is the net torque on each tire? N · m
  37. physics

    A student rides his bicycle at a constant speed of 2.20 m/s along a straight, level road. If the bike's tires each have a radius of 0.338 m, determine the following. (a) What is the tires' angular speed? rad/s (b) What is the net torque on each tire? N · m
  38. physics

    imagine a flat, lightweight wheeled cart that's low to the ground and has well-oiled bearings. what would happen if you approached the cart, stepped onto it, and walked along its length at a constant speed? it would a) remain nearly stationary b) advance along with you c) move...
  39. physics

    imagine a flat, lightweight wheeled cart that's low to the ground and has well-oiled bearings. what would happen if you approached the cart, stepped onto it, and walked along its length at a constant speed? it would a) remain nearly stationary b) advance along with you c) move...
  40. physics

    When two objects of unequal mass are hung vertically over a frictionless pulley of negligible mass, as shown below, the arrangement is called an Atwood machine. Determine a) the magnitude of the acceleration of the two objects and b) the tension in the lightweight cord below ...
  41. physics

    how can a racing bicycle have the same linear momentum as a pick-up truck?
  42. math

    A research based on 150 students relating to their favorite fruit revealed the following: 90 students preferred Apples; 75 preferred Bananas; and 55 preferred Strawberries; 30 of them preferred Bananas and Strawberries; 15 preferred Apples and Strawberries; 15 preferred ...
  43. physics ( help FAST)

    Which could potentially cause you the greater injury: being tackled by a lightweight, fast moving rugby league player or being tackled by a player with double the mass but moving at half the speed? Explain your answer
  44. physics

    Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If mass one equals 3.6 Kg and mass two equals 9.2 Kg, and block two is initially at rest 140 cm above the floor, how Long does it take block two to reach the floor?
  45. Physics

    A uniform beam of weight 245 N, and length L, sticks out from a vertical wall. A lightweight cable connects the end of the beam to the wall, making an angle of 65.0° between the beam and the cable. What is the tension in the cable?
  46. physics

    Two blocks are connected by a lightweight cord that passes over a frictionless, massless pulley. The bottom block has a mass of 2.00 kg and the top block has mass 0.500 kg. The coefficient of kinetic friction at each sliding surface is equal to 0.10. The two blocks are release...
  47. Physics

    A ramp, a pulley, and two boxes. Box A, of mass 10.0 kg, rests on a surface inclined at 37° to the horizontal. It is connected by a lightweight cord, which passes over a massless and frictionless pulley, to a second box B, which hangs freely as shown. If the coefficient of ...
  48. physics

    A bicycle and rider of total weight 815 N travel at a speed of 40.0 km/h. The rider hits the breaks and the bicycle slides to a full stop in a distance of 8.5 m. Ignore air resistance and use g=9.8 m/s2. What is the coefficient of kinetic friction between the tires (rubber) ...
  49. Trig

    Need hellpp!! If a bicycle has 26 inch diameter wheels and the front “chain”drive has a radius of 2.1 inches and the back drive has a radius of 2.5 inches, how far does the bicycle travel for every one rotation of the cranks (pedals)? Carry out all calculations exactly and...
  50. Physics

    A manufacturer selected a metal to use in producing a lightweight button for clothing. A metal that has a density of 2.71 g/cm3 was selected. Which of the metals was selected? A Metal 1 B Metal 2 C Metal 3 D Metal 4
  51. college physics

    When two objects of unequal mass are hung vertically over a frictionless pulley of negligible mass, as shown below, the arrangement is called an Atwood machine. Determine a) the magnitude of the acceleration of the two objects and b) the tension in the lightweight cord below ...
  52. Math

    The distance a bicycle travels with each turn of its wheels is about 3 1/7 times the tire diameter. The tires on Mike's bicycle have a diameter of 24 1/2 inches. How far does it travel with each turn of the wheels?
  53. algebra

    Hi can I get help with these two questions. 1. Everytime the pedals go through 360 degree rotation, the tires roate three imes. if the tires are 24 nches in diameter, what is the minimum numbe of comlete rotions of the pedls needed forr the bicycle to travel at least 1 mile. I...
  54. 6th grade math

    Yes I am not smarter than a 6th grader. How do I show the math and in the simplest form for the following: A sixth grade class has 100 sheets of lightweight paper. They use 3/4 of the paper for a collection of class poems. What is the total thickness of the paper they use?
  55. english

    I find it at http://en.wikipedia.org/wiki/Cagoule There is a relationship -- what the people referred to in the second link wore -- a cowl ( http://www.answers.com/cowl ). I think the origin is French, but I can't find anything specific either. =( Thanks for all the websites ...
  56. physics

    A 2.606 kg block is on a horizontal surface with ìk = 0.160, and is in contact with a lightweight spring with a spring constant of 577 N/m which is compressed. Upon release, the spring does 7.212E-1 J of work while returning to its equilibrium position. I found the distance ...
  57. physics

    I need help with solving these word problems. Marion rides her racing bicycle @ speed of 8 m/s. Bicycle wheels have a radius of 34 cm. What is the angular speed of wheels? How many times does each wheel go around during a 10-min race? A car tire has radius of 33cm. Tire turns ...
  58. Physics

    I need help with solving these word problems. Marion rides her racing bicycle @ speed of 8 m/s. Bicycle wheels have a radius of 34 cm. What is the angular speed of wheels? How many times does each wheel go around during a 10-min race? A car tire has radius of 33cm. Tire turns ...
  59. Algebra 2

    The air resistance R(in pounds) on a racing cyclist is given by the equation R=0.00829s^2 where s is the bicycle's speed (in miles per hour). a. What is the speed of a racing cyclist who experiences 5 pounds of air resistance? b. What happens to the air resistance if the ...
  60. Algebra 2 please help!

    The air resistance R(in pounds) on a racing cyclist is given by the equation R=0.00829s^2 where s is the bicycle's speed (in miles per hour). a. What is the speed of a racing cyclist who experiences 5 pounds of air resistance? b. What happens to the air resistance if the ...
  61. Physics

    A mobile consists of two very lightweight rods of length l = 0.400 m connected to each other and the ceiling by vertical strings. (Neglect the masses of the rods and strings.) Three objects are suspended by strings from the rods. The masses of objects 1 and 3 are m1 = 5.90 kg ...
  62. Prac Exer For Instruc Pack 3

    Just want to review my answer's with your's if it's not too much to ask for. Thank You! EXAMINATION NUMBER: 04281701 1. You need to strengthen a slash on a muslin blouse that is being made for a holiday celebration. Since muslin is a loosely woven fabric and the garment will ...
  63. physics

    A bicycle is moving at 8.3 m/s. What is the angular speed of its tires if their radius is 42 cm?
  64. Finance

    A firm has $3 million market value and it sells preferred stock with a par value of $100. If the coupon rate on the preferred stock is 9% and the preferred stock trades at $95, what is the cost of preferred stock financing?
  65. physics

    Two blocks (one of which is on a ramp) are attached via a string looped over a pulley. The block on the incline has a mass of 5.0 kg; the block hanging downward (suspended by the pulley) has a mass of 7.0 kg. Assume the usual things (non-stretchy massless string, frictionless ...
  66. Physics

    Two blocks (one of which is on a ramp) are attached via a string looped over a pulley. The block on the incline has a mass of 5.0 kg; the block hanging downward (suspended by the pulley) has a mass of 7.0 kg. Assume the usual things (non-stretchy massless string, frictionless ...
  67. physics

    Two blocks (one of which is on a ramp) are attached via a string looped over a pulley. The block on the incline has a mass of 5.0 kg; the block hanging downward (suspended by the pulley) has a mass of 7.0 kg. Assume the usual things (non-stretchy massless string, frictionless ...
  68. Physics

    Two blocks (one of which is on a ramp) are attached via a string looped over a pulley. The block on the incline has a mass of 5.0 kg; the block hanging downward (suspended by the pulley) has a mass of 7.0 kg. Assume the usual things (non-stretchy massless string, frictionless ...
  69. Science I need a teacher's help

    Why are capillaries and not arteries or veins found in the alveoli, nephrons, and villi. A. vessels must be small so that very little blood enters these tissues B. vessels must be narrow so that only very small molecules can reach these tissues C. vessel walls must be thin to ...
  70. PHYSICS

    Model rockets are lightweight rockets powered by very small engines. A typical model rocket has a mass of 5g.Similarly, a typical "class C" model rocket engine can produce a total impulse of 10 Newton-seconds. We usually launch model rockets vertically, but if I instead ...
  71. motion,physics

    Model rockets are lightweight rockets powered by very small engines. A typical model rocket has a mass of 5g.Similarly, a typical "class C" model rocket engine can produce a total impulse of 10 Newton-seconds. We usually launch model rockets vertically, but if I instead ...
  72. physics

    First off, thanks a lot for your help. Secondly, will you do it again? A bicyclist traveling with speed v = 3.2m/s on a flat toad is making a turn with radius r = 2.8 m. The forces acting on the cyclist and cycle are the normal force (N) and friction force (Ffr) exerted by the...
  73. Math

    If the bicycle tires have a diameter of 22 inches, how far will the bike travel for each tire rotation?
  74. Physics

    A bicycle with tires .064 m in diameter travels 8.1 km. 1. How many revolutions do the wheels make?
  75. math

    you have a bicycle with 26 inch diameter tires. if you ride it for 6 miles, how many revolutions will each tire make?
  76. physics

    A racing cyclist accelerates 5m/s² when she starts from rest. The total mass of the cyclist and her bicycle is 45kg. Calculate the resultant force that produces this acceleration
  77. physics

    To determine the location of his center of mass, a physics student lies on a lightweight plank supported by two scales L = 2.44 m apart. If the left scale reads 309 N, and the right scale reads 125 N, calculate the student's mass. Calculate the distance from the student's head...
  78. Physics

    To determine the location of his center of mass, a physics student lies on a lightweight plank supported by two scales L = 2.40 m apart If the left scale reads 278 N, and the right scale reads 116 N, calculate the student's mass. Calculate the distance from the student's head ...
  79. investing 3-2

    Which of the following preferred stock properties would provide the best argument favoring purchase of preferred stock by an investor? A. When long-term bond yields decline, the value of preferred stock can potentially rise. B. Because preferred stock trading volume is lower ...
  80. Math

    The cruiser bicycle company makes two styles of bicycles the traveler which sells for $200 and the Tourister was sells for $600 each bicycle has the same frame and tires but the assembly and painting time required for the traveler is only one hour while it is three hours for ...
  81. Physics "Simple" Energy Problem

    Jonathan is riding a bicycle and encounters a hill of height 6.70 m. At the base of the hill, he is traveling at 5.00 m/s. When he reaches the top of the hill, he is traveling at 3.00 m/s. Jonathan and his bicycle together have a mass of 77.6 kg. Ignore friction in the bicycle...
  82. PHYSICS

    A bicycle with 0.80 -diameter tires is coasting on a level road at 5.6 . A small blue dot has been painted on the tread of the rear tire. a)What is the angular speed of the tires? b)What is the speed of the blue dot when it is 0.80 above the road? c)What is the speed of the ...
  83. another precalc word problem

    The Cruiser Bicycle Company makes two styles of bicycles: the Traveler, which sells for $200, and the Tourister, which sells for $600. Each bicycle has the same frame and tires, but the assembly and painting time required for the Traveler is only 1 hour, while it is 3 hours ...
  84. Physics

    A bicycle with tires 64 cm in diameter travels 5.2 km . Part A How many revolutions do the wheels make? Express your answer using two significant figures.
  85. umdnj

    A company has preferred stock that can be sold for $21 per share. The preferred stock pays an annual dividend of 3.5% based on a par value of $100. Flotation costs associated with the sale of preferred stock equal $1.25 per share. The company's marginal tax rate is 35%. ...
  86. Chem. Percent Yield

    Titanium, a strong, lightweight metal used in many applications, is prepared by the reaction of titanium(IV) chloride with molten magnesium metal. 3.45 x 10^7g of titanium(IV) chloride is reacted with 1.13 x 10^7g of magnesium, 7.91 x 10^6g of titanium metal are obtained. What...
  87. finance

    Sony $4.50 preferred is selling for $65.50. The preferred dividend is non growing. What is the required return on Sony preferred stock?
  88. math

    Wheel’s Bicycle shop advertised a bicycle for 15% off for a savings of $36. The bicycle did not sell so it was offered at a new 20% discount off the sale price. (a) What did the bicycle sell for regularly? ______________ (b) What is the amount of the new discount? _____________
  89. MATH

    Wheel’s Bicycle shop advertised a bicycle for 15% off for a savings of $36. The bicycle did not sell so it was offered at a new 20% discount off the sale price. a. What did the bicycle sell for regularly? b. What is the amount of the new discount?
  90. math

    Wheel’s Bicycle shop advertised a bicycle for 15% off for a savings of $36. The bicycle did not sell so it was offered at a new 20% discount off the sale price. (a) What did the bicycle sell for regularly? (b) What is the amount of the new discount?
  91. math

    wheels bicycle shop advertised a bicycle for 15% off for a savings of $36. The bicycle did not sell so it was offered at a new 20% discount off the sale price. What did the bicycle sell for regularly? What is the amount of the new discount?
  92. Physics

    1) A small dense object is suspended from the rear view mirror in a car by a lightweight fiber. As the car is accelerating at 1.90 m/s 2, what angle does the string make with the vertical? 2) A patient is to be given a blood transfusion. The blood is to flow through a tube ...
  93. Managerial Finance

    A firm has an issue of preferred stock outstanding that has a par value of $100 and a 4% dividend. If the current market price of the preferred stock is $50, the yield on the preferred stock is
  94. geometry d the sspeed of the bicycle in m/s

    a bicycle wheel has 77cm in diameter and makes revolution per second .find the speed of the bicycle in m/s
  95. Math

    Twenty tires are tested to see if they last as long as the manufacturer claims they do. Three tires fail the test. Two tires are selected at random without replacement for an inspection. Find the probability that both tires fail the test. Which is greater, the probability that...
  96. statistics

    The tires are also tested for failure during a road test where they are subjected to road hazards. A test of 600 tires resulted in the failure of 30 tires. a) Find a 95% confidence interval on the proportion of failures for the new formula of of rubber. b) The proportion of ...
  97. Physics

    i have been asking physics questions on this and some people give me the formula, i'm getting the correct answers..please can the same people help me on this that helped me before.. A child rides a bicycle in a circular path with a radius of 2.0 m. The tangential speed of the ...
  98. Physics

    A bicycle and rider of total weight 815 N travel at a speed of 40.0 km/h. The rider hits the breaks and the bicycle slides to a full stop in a distance of 8.5 m. Ignore air resistance and use g=9.8 m/s2. What is the coefficient of kinetic friction between the tires (rubber) ...
  99. PHYSICS - URGENT

    a ball of mass m1 and a block of mass m2 are attached by a lightweight cord that passes over a frictionless pulley of negligible mass. the block lies on a frictionless incline of angle theta. (a) draw the free body diagrams (b) express newton's second law in component form (c...
  100. math

    Your required rate of return on company XYZ's preferred stock is 12%. Their preferred stock pays a fixed annual dividend of $4. A share of XYZ preferred is valued at
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