anonymus

Newest questions posted by anonymus
  1. physics

    A thin stick of mass M = 2.0 kg and length L = 2.6 m is hinged at the top. A piece of clay, mass m = 1.0 kg and velocity V = 0.9 m/s hits the stick a distance x = 1.90 m from the hinge and sticks to itWhat is the ratio of the final mechanical energy to the
  2. physics

    The rectangle shown has a mass, m. The sides are made of uniform thin wire. The short side is of length a, and the long side is of length b. If m = 10.50 g, a = 35.00 cm and b = 71.4 cm, what is the moment of rotational inertia about the axis indicated?
  3. physics

    A non-uniform bar of weight W = 20.0 N is suspended at rest in a horizontal position by two massless cords. The angle phi between cord 2 and the vertical is equal to 32.5o. The bar has a length L = 6.5 m and the distance of its center of gravity from the
  4. physics

    The Figure shows two blocks, block 1 and block 2, held in equilibrium by a massless, unstretchable string. The mass of block 1 is 14.2 kg, the mass of block 2 is 6.2 kg, and the angle theta is 26o The system begins to slip if any additional mass is added
  5. physics

    The system in the Figure is in equilibrium. A mass M1 = 221.0 kg hangs from the end of a uniform strut which is held at an angle theta = 42.0o with respect to the horizontal. The cable supporting the strut is at angle alpha = 31.0o with respect to the
  6. physics

    The system in the Figure is in equilibrium. A mass M1 = 221.0 kg hangs from the end of a uniform strut which is held at an angle theta = 42.0o with respect to the horizontal. The cable supporting the strut is at angle alpha = 31.0o with respect to the
  7. physics

    A particle moves in the xy-plane, starting from the origin at t = 0 with an initial velocity v0 = (20ˆi – 15ˆj) m/s and a constant acceleration of a = 4.0ˆi m/s2. Determine the particle’s speed and direction at t = 5.0 s.
  8. physics

    A car with a weight of 15 000 N is being towed up a 20o slope at constant velocity. Friction is negligible. The tow rope is rated at 6 000 N maximum tension. a. Draw the free body diagram, by cleverly choosing the coordinate system. (5 marks) b. Calculate
  9. physics

    (15 Marks) An amusement park ride consists of a large vertical cylinder that spins about its axis fast enough that any person inside is held up against the wall when the floor drops away. The coefficient of static friction between the person and the wall
  10. physics

    A moving 1.6 kg block collides with a horizontal spring whose spring constant is 267 N/m (see figure). The block compresses the spring a maximum distance of 7.0 cm from its rest position. The coefficient of kinetic friction between the block and the
  11. physics

    A 1500 kg block of granite is pulled up an incline that has an angle of inclination of 23 o with a constant speed of 2.03 m/s by a steam winch (see Figure). The coefficient of kinetic friction between the block and the incline is 0.29. How much power must
  12. physics

    A 485-kg crate hangs from the end of a 11.7 m long rope. You pull horizontally with a varying force to move it a distance d = 5.8 m to the right. What is the magnitude of the applied force F when the crate is at rest in its final position?
  13. physics

    With brakes fully applied, a 1340 kg car deccelerates from a speed of 96.0 km/hr. What is the change in the kinetic energy of the car?
  14. physics

    With brakes fully applied, a 1340 kg car deccelerates from a speed of 96.0 km/hr. What is the work done by the braking force in bringing the car to a stop?
  15. physics

    An aircraft uses a rocket-assisted takeoff unit (RATO) that is capable of discharging 49.0 kg of gas in 15.0 s with an exhaust velocity of 1300 m/s. The 3000 kg aircraft, on an ordinary takeoff without RATO, requires a distance of 440 m to reach a lift-off
  16. physics

    A bullet of mass m = 0.025 kg is fired with a speed of vi = 94.00 m/s and hits a block of mass M = 2.10 kg supported by two massless strings. The bullet emerges from the right side of the block with a speed of vf = 47.00 m/s. Find the height to which the
  17. physics

    A 22.0-kg body is moving in the direction of the positive x axis with a speed of 359 m/s when, owing to an internal explosion, it breaks into three pieces. One part, whose mass is 6.5 kg, moves away from the point of explosion with a speed of 387 m/s along
  18. physics

    wo blocks with masses m1 = 1.4 kg and m2 = 3.6 kg are at rest on a frictionless surface with a compressed spring between them. The spring is initially compressed by 60.0 cm and has negligible mass. When both blocks are released simultaneously and the
  19. physics

    wo blocks with masses m1 = 1.4 kg and m2 = 3.6 kg are at rest on a frictionless surface with a compressed spring between them. The spring is initially compressed by 60.0 cm and has negligible mass. When both blocks are released simultaneously and the
  20. physics

    Two 21.0 kg ice sleds are placed a short distance apart, one directly behind the other, as shown in the figure. A 3.42 kg cat, initially standing on sled 1, jumps across to sled 2 and then jumps back to sled 1. Both jumps are made at a horizontal speed of
  21. physics

    A 44-kg girl stands on a 7-kg wagon holding two 15.0-kg weights. She throws the weights horizontally off the back of the wagon at a speed of 9.5 m/s relative to herself. Assuming that the wagon was at rest initially, what is the speed of the girl after she
  22. physics

    A radioactive nucleus of uranium-235 (mU = 235 u) decays spontaneously to thorium-231 by emitting an alpha particle (nucleus of a helium atom, symbolised α). The α particle (mα = 4.00 u) has kinetic energy 4.60 MeV. What is the kinetic energy of the
  23. physics

    A student places her 500 g physics book on a frictionless table. She pushes the book against a spring, compressing the spring by 4.0 cm, then releases the book. What is the book’s speed as it slides away? The spring constant is 1250 N/m. 1
  24. physics

    Two blocks with masses m1 = 1.4 kg and m2 = 3.6 kg are at rest on a frictionless surface with a compressed spring between them. The spring is initially compressed by 60.0 cm and has negligible mass. When both blocks are released simultaneously and the
  25. physics

    n aircraft uses a rocket-assisted takeoff unit (RATO) that is capable of discharging 49.0 kg of gas in 15.0 s with an exhaust velocity of 1300 m/s. The 3000 kg aircraft, on an ordinary takeoff without RATO, requires a distance of 440 m to reach a lift-off
  26. physics

    ) A man holds a pail of water by the handle and whirls it around a vertical circle of radius 0.86 m at constant speed. What is the minimum speed that the pail must have at the top of its circular motion if the water is not to spill out of the upside-down
  27. physics

    A mass m = 6.0 kg is attached to the lower end of a massless string of length L = 73.0 cm. The upper end of the string is held fixed. Suppose that the mass moves in a circle at constant speed, and that the string makes an angle theta = 27o with the
  28. physics

    A 32.7-kg block (m1) is on a horizontal surface, connected to a 6.7-kg block (m2) by a massless string as shown in the Figure. The pulley is massless and frictionless. A force of 236.1 N acts on m1 at an angle of 28.7o. The coefficient of kinetic friction
  29. physics

    Two masses of 2.25 kg each, connected by a string, slide down a ramp making an angle of 34o with the horizontal. The coefficient of kinetic friction between M1 and the ramp is 0.33. The coefficient of kinetic friction between M2 and the ramp is 0.12. Find
  30. chemistry

    The radioactive decay of carbon-14 is first-order and the half-life is 5800 years. While a plant or animal is living, it has a constant proportion of carbon-14 (relative to carbon-12) in its composition. When the organism dies, the proportion of carbon-14
  31. physics

    4. A 1500 kg car starts from rest and drives around a flat 50 m diameter circular track. The forward force provided by the car’s wheels is a constant 1000 N. a. What are the magnitudes and direction of the car’s acceleration at t = 10 s? b. If the car
  32. physics

    does acceleration change when a lift is moving
  33. physics

    1. Henry gets into an elevator on the 50th floor of a building and it begins moving at t = 2s. The figure shows the his apparent weight over the next 10 s. a. Is the elevator’s initial direction up or down? Explain clearly how you arrived at this
  34. physics

    At the entrance channel of a harbor, the tidal current has a velocity of 4.22 km/hr in a direction 17.4o south of east. Suppose a ship caught in this current has a speed of 17.5 km/hr relative to the water. If the helmsman keeps the bow of the ship aimed
  35. physics

    Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 45 kg, m2 = 39 kg, and m3 = 50 kg. The pulling force is equal to T3
  36. physics

    On a winter day with the temperature hovering near freezing, the coefficent of static friction between the tires and an icy road is 0.27. What is the maximum incline that a four-wheel drive vehicle can climb with zero acceleration?
  37. physics

    3.92 kg block located on a horizontal floor is pulled by a cord that exerts a force F = 11.5 N at an angle theta = 15.5o above the horizontal, as shown in the Figure. The coefficient of kinetic friction between the block and the floor is 0.09. What is the
  38. physics

    A block with mass m = 19.1 kg slides down an inclined plane of slope angle 18.2 o with a constant velocity. It is then projected up the same plane with an initial speed 2.05 m/s. How far up the incline will the block move before coming to rest?
  39. physics

    Two blocks with masses m1 = 24.6 kg and m2 = 60.0 kg, shown in the figure, are free to move. The coefficient of static friction between the blocks is 0.67 but the surface beneath m2 is frictionless. What is the minimum force F required to hold m1 against
  40. physics

    At the entrance channel of a harbor, the tidal current has a velocity of 4.22 km/hr in a direction 17.4o south of east. Suppose a ship caught in this current has a speed of 17.5 km/hr relative to the water. If the helmsman keeps the bow of the ship aimed
  41. physics

    A rocket engine uses fuel and oxidizer in a reaction that produces gas particles having a velocity of 1380 ms-1. The desired thrust is to be 195000 N. 1-What must be the fuel/oxidizer consumption rate (in kg s-1)? 2-f the initial weight of the rocket is
  42. geometry hhhheeeelllllpppppp

    What is the surface area of a triangular prism with a base of 3 a height of 2.6 and a length of 7?
  43. Art

    based on their attire, playing music during leisure time is most likely a pursuit of which greek class citizen? lower class musical class upper class middle class i believe it is upper class
  44. Algebra

    1/2F-16=9/10c for f
  45. Proportion

    A truck has traveled 75 miles in 1.5 hours of driving. At the same speed,which proportion can be used to determine how long,T (in hours),it would take the truck to travel 325 miles?
  46. English

    Can someone help me write an essay on the secret garden
  47. Algebra

    Directions: Find the prime factors of the polynomials 1. a. 2a2 - 2b2 b. 6x2 - 6y2 c. 4x2 - 4 d. ax2 - ay2 e. cm2 - cn2 2. f. st2 - s g. 2x2 - 18 h. 2x2 - 32 i. 3x2 - 27y2 j. 18m2 - 8 3. k. 12a2 - 27b2 l. 63c2 - 7 m. x3 - 4x n. y3 - 25y o. z3 - z 4. p. 4c3
  48. English

    Part A Infinitives An infinitive is the base form of the verb, commonly preceded by to . An infinitive may be used as a noun, adverb, or adjective. Examples: -To know him is to like him. (noun) -She came here to study. (adverb) -That is the movie to see.
  49. English

    1. Salt Lake City, Utah's capital and largest city, was founded in 1847. 2. Janice and Carla spent the day at the mall. 3. Standard time was adopted in the United States in 1884. 4. The geographic center of the United States is in Kansas. 5. The first
  50. Algebra

    Transform the following equations into standard form 1. x^2 + 2x = -1 2. 4 + x^2 = 7x 3. x^2 - x = 1 4. x^2 + 9x = 10 5.4x + 3 = x^2 6. x^2 + 5x +5 7. 2x^5 + 7x = 3x 8. x^2 = 3x + 8 9. x(x + 3) = 1 10. x^2 - 3x = -2 11. y^2 - 7y = -6 12.z^2 - 5z = -4 Some
  51. Algebra

    1. 10a – 8b (-) 4a + 5b 2. 5b + 3c (-) 4b + 3c 3. 6d + 6e (-) 9d – 8e 4. 8x – 3y (-) -4x + 8y 5. 6rs – 7bc (-) 9rs – 7bc 6. 5xy – 9cs (-)-3xy + cs 7. x2 – 6x + 5 (-) 3x2– 2x – 2 8. 3y2 – 2y – 1 (-) -5y2– 2y + 6 9. (7a + 6b – 9c)
  52. History

    1830s-1840s A. Evaluate the presidency of Andrew Jackson. Do you think that his actions were considered normal during his time? B. Analyze racism towards Native Americans during this period. C. Identify and describe at least two (2) positive events during
  53. Social Studies

    Geographically, people in western Russia have tended to identify with Europe more than Asia because A) the soil is so similar. B) their languages are quite similar. C) the Mediterranean Sea connects them. D) the Ural Mountains seal them off from the rest
  54. math

    In a private school the ratio of boys to girls is 5:3 if there are 50 more boys than girls. How many students are there in total?
  55. Science

    if you exert the same force on two objects of different masses. which object will have the greater acceleration?
  56. Math

    A pitcher throws a 142 g baseball, which accelerates at a speed of 9 m/s^2. How much force does the pitcher apply to the ball?
  57. Science

    Give an example of something that uses all third of Newton's Law.
  58. Math

    As x increases by 2 units, y increases by 3 units.
  59. Math.

    Which roof is steeper: a roof with a rise of 12 and run of 7 or a roof with a rise of 8 and a run of 4?
  60. Math

    Some number multiplied by -6 is 36. Multiply this number by 8. Divide the answer by 2. What is the final number?
  61. math

    solve. 4r= -36
  62. Math

    Workers at the camp cut mosquito netting into lengths of 250 cm. How many of these lengths can be cut from 30 m of mosquito netting?
  63. math

    Explain how you can be sure that all rates you have written on a double number line are correct.
  64. ENG1511

    Correct the following for subject-verb agreement, tenses and fragments. 1.My car it is very beautiful. 2.When he thought he could afford to pay his own school fees. 3.This students keep making noise. 4.When I was young,I use to love playing with dolls.
  65. algebra

    In a math competition, contestants receive 8+ points for every correct answer and -5 for every incorrect answer. Boris has 23 correct answers and 5 incorrect answers; bridget has 32 correct answers and 19 incorrect. Who has the higher score?
  66. math 8th grade

    -15 - (3-7) + 6 * (-2) + (-8) - 9
  67. math

    -15 - (3-7) + 6 * (-2) + (-8) - 9
  68. math

    -15 - (3-7) + 6 * (-2) + (-8) - 9
  69. math

    2(3)cubed - (-9 + 5)squared =?
  70. math

    Is the answer of 4×4×4 + 2×2 greater than the answer of 10 × 10 + 2 × 2 × 2 × 2 ×2?
  71. math

    What does 4×4×4 + 2×2×2 =?
  72. math

    Five athletes are chosen to represent their sports at the school pep rally. Two girls and three boys are selected to walk into the gymnasium. If a girl must enter first and the other girl must be the last one to enter, how many different ways can the
  73. math

    If the kitchen floor is shaped like a rectangle and measures 11 feet × 14 feet, how many square tiles will they need to cover the floor if each square tile measures 4 inches × 4 inches?
  74. math

    At a local restaurant, you order a cheesburger that costs $3.75, an order of french fries that cost $2.95, and a small drink that costs $1.30. There is 7% sales tax added to the order. What is the total cost of your meal?
  75. math

    If 3x + 7 = 34, what is the value of 5x?
  76. math

    Point R located at (-3,4) and the point is trandlated +4 units horizontally. Where will the translated point be located?
  77. math

    What is the 40th digit in the pattern 0.142857?
  78. math

    If a person standing 5 feet tall casts a shadow 12 feet long, then how long is a tree's shadow if a tree stands 17.5 feet tall?
  79. math

    Mark and Juanita want to tile their kitchen floor. If the kitchen floor is shaped like a rectangle and measures 11 feet × 14 feet, how many square tiles will they need to cover the floor is each square tile measures 4 inches × 4 inches?
  80. math

    Mark and Juanita want to tile their kitchen floor. If the kitchen floor is shaped like a rectangle and measures 11 feet × 14 feet, how many square tiles will they need to cover the floor is each square tile measures 4 inches × 4 inches?
  81. math

    What is the 40th digit in the pattern 0.142857?
  82. math

    If a person standing 5 feet tall casts a shadow 12 feet long, then how long is a tree's shadow if a tree stands 17.5 feet tall?
  83. math

    Based on estimates, the town of wayne has a population of 54,000 people. Wayne has an area of approximately 25 square miles. What is the population density of wayne?
  84. math

    What number can be expressed as 2cubed × 3 × 5squared?
  85. math

    The box shown does not have a top. What is the surface area of the box if its length measures 12 cm, its width is 9 cm, and it has a height of 15 cm?
  86. math

    A local bus leaves the stations at 6:00 a.m. and returns to pick up new passengers every 40 minutes. Providing there are no delays and the bus maintains its schedule, what time could the bus NOT return to the station?
  87. math

    His farn yields 5,000 ears of corn per season. Each year he plans to double the amount of corn his farm will yield. If this occurs, how ears of ears of corn will his farm yield during the fourth year?
  88. math

    What is the value for x in the equation 6(x + 2)=54?
  89. Science

    What energy change occurs during condensation?
  90. math

    During a recent free throw basketball tournament, jessica makes 27 out of 40 free throws. Express this amount as a decimal.
  91. math

    A professional baseball player has a battung average of 0.325 , express the players batting average as a fraction in simplest form.
  92. math

    On a recent math test, monique earned an 85%. Which value represnts the amount monique did not answer correctly?
  93. math

    There are 5 red marbles, 6 blue marbles, e green marbles, and 2 yellow marbles in a bag. What percent or fraction represents the number of blue and green marbles in the bag?
  94. math

    The New Jersey state lottert is $173,000,00. If you and your family win the lottery and receive 5% of that amount for the next twenty years how kuch money will you receive each year?
  95. math

    Which set of numbers does not contain three numbers that are equivalent? - Choices are:- A. 1/2,0.5,50% B. 1/5,0.02,20% C. 1/8,0.125,12.5% D. 1/20,0.05,5%
  96. math

    Yankee stadium can seat 57,545 people. At a recent game, it was reported that appoximately 97% of the tickets were sold. Based on that report, what is the best estimate for how many people attended the game?
  97. math

    What is the equivalent form of 15/24?
  98. math

    The sales team at an electronics store sold 48 computers last month. The manager at the store wants to encourage the sales team to sell more computers and is going to give all the sales team members a bonus if the number of computers sold increases by 30%
  99. math

    You have a large container of olive oil. You have used 22 1/2 quarts of oil. Twenty-five percent of the olive oil remains. How many quarts of olive oil remain?
  100. math

    Marty's rock shop has a stock of 360 shells. 80% of the shells are from florida. How many of the shells are from florida?

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