Math/Physics

214,834 results, page 71

  1. physics

    Two 2.5 kg physical science textbooks on a bookshelf are 0.25 m apart. What is the magnitude of the gravitational attraction between the books?
  2. Physics

    A loudspeaker emits energy equally in all directions at the rate of 1.75J/s. What is the intensity level at a distance of 15 m?
  3. physics

    compute the acceleration of a 1500-N block sliding down a 30 degrees incline. Assume friction is negligible
  4. Physics

    An FM radio station of frequency 107.7MHz puts out a signal of 50,000 W.How many photons/s are emitted?
  5. Physics

    An experimenter finds that no photo-electrons are emitted from tungsten unless the wavelength of light is less than 270nm.
  6. Physics

    An FM radio station of frequency 107.7MHz puts out a signal of 50,000W. How many photons/s are emitted?
  7. Physics

    An FM radio station of frequency 107.7MHz puts out a signal of 50,000W. How many photons/s are emitted?
  8. Physics

    A 20,000 kg vehicle is running at 80km/hr in a rotonda with a radius of curvature 25m compute for the centripetal force
  9. Physics-Intro

    Find the total force necessary to give a rocket of mass 25,000 slugs an acceleration of 28.0 ft/s2.
  10. Physics

    Forces of 9.5 N and 5.12 N act at right angles on a reddish-green block of mass 3.19 kg. How much acceleration occurs?
  11. physics

    Forces of 4.57 N and 4.74 N act at right angles on a reddish-green block of mass 5.76 kg. How much acceleration occurs?
  12. physics

    A particle of mass 10 kg is slowly lifted up to a height of 10 metre then calculate the workdone by external and gravity force ?
  13. physics

    Forces of 4.57 N and 4.74 N act at right angles on a reddish-green block of mass 5.76 kg. How much acceleration occurs?
  14. physics

    What force is necessary to keep a 2.00x10^3 car moving up a 15.0 degree incline at a constant velocity? (Mu=.200)
  15. physics

    find the change in momentum of a car weighing 1500kg when its speed increases from 36km/h to 72km/h uniformly
  16. Physics

    A wattmeter shows that a motor is drawing 2200w. What horsepower is being delivered? Is this correct? 2200/746 = 2.95
  17. physics

    Thirty microcoulombs of NEGATIVE charge experiences an electrostatic force of 27. mN. What is the magnitude and direction of the electric field?
  18. physics

    A person is kayaking in the ocean at 5.6 m/s 75° to the horizon when he experiences a current of 3.8 m/s 45° south of west. What is the speed and direction of his kayak?
  19. physics

    016 (part 1 of 2) 10.0 points A speedboat increases in speed from 17.9 m/s to 31.8 m/s in a distance 188 m. Find the magnitude of its acceleration.
  20. physics

    A car traveling at 6.5m/s accelerates 3.6m/s2 to reach a speed of 16.0 m/s. How long does it take for this acceleration to occur? Answer in units of s
  21. physics

    A 2.0kg book is lying on a 0.74m high table. You pick it up and place it on a bookshelf 2.0m above the floor
  22. Physics

    Repairing a spaceship CJ drops a hammer and it took .68 s to fall .90 m to the ground. What is the magnitude of the gravitational accerleration on mars
  23. physics

    A vector representing 170 N is oriented at 30 degrees with the horizontal. What is the magnitude of the vertical component? Answer in units of N,
  24. Science Physics

    How many Btu of heat must be added to 1200 lb of copper to raise its temperature from 100°F to 450°F
  25. physics

    car doing 60 mph and skids for 52.3 meters what is the speed at end of skid co/friction is 0.693 urgent help please
  26. physics

    a50g ball is hit to roll by a force of 100N.it rolls over 20m.what was its initial speed
  27. Hurricane Project for Physics Class

    1) Please describe the typical path(s) for hurricanes. Is this part of the pattern of convection?
  28. Physics

    A ball starts 1.175 meters off the ground and shot at an angle of 40 degrees with a velocity of 3.2 m/s. Where does it land?
  29. physics

    what is the t shirts vertical componet of its velocity at launch? if it launches straight at 45° above the horizontal plane at 141 /s?
  30. Physics

    A red flower seen in the light of mercury vapour lamp through a green filter will appear?
  31. physics

    with a cart of unknown mass, could you still determine whether its total energy is conserved? explain your reasoning
  32. Physics

    An aircraft landing on an aircrafts carrier is brought to a complete stop from an initial of 215km/h in 2.7 seconds. What is its acceleration in m/s2?
  33. Physics

    An aircraft landing on an aircrafts carrier is brought to a complete stop from an initial of 215km/h in 2.7 seconds. What is its acceleration in m/s2?
  34. physics

    A proton moves with a velocity V (2i - 4 j + k) m / s in a region where the field is given by B = (i + 2 j -3k) T . What is the magnitude of the magnetic force experienced by the load?
  35. physics

    How much power is developed by a jumbo jet that cruises at 250 m/s. When the trust of its engine is 100,000N?
  36. physics

    The mass of a pendulum moves a total horizontal distance of 14cm in one cycle. What is the amplitude of the vibration?
  37. Physics

    The brakes of a bike (with a person) having a mass of 63 kg, reduces it's velocity from 8.5 m/s to 0 m/s in 3.0 seconds. What is the magnitude of braking force?
  38. AP physics

    An object undergoes a displacement x while a force F acts on it. If F does zero work, then the angle between F and x must be
  39. physics

    Calculate the half-life of a radioactive substance that decays by a factor of 3 in concentration every 1 million years
  40. Physics

    Find the component form of ⃗v given a magni- tude of 9 and an angle of θ = 90◦ with positive
  41. Physics

    A block of mass 8.1 kg is pulled to the right by an applied force of 76.2 N. If the acceleration is 0.84 m/s^2, how much friction must be present?
  42. physics

    to view full image of an object 160 cm high, the minimum size of the plane mirror required is?
  43. Physics

    A person weighing 900 Newtons is standing on snowshoes. Each snowshoe has an area of 2500cm^2. What is the pressure on the snow?
  44. Physics

    An object is thrown with speed of 17 m/s at an angle of 550. find the time it takes to reach its maximum height.
  45. physics

    A ball rolls off a 1.40 m high table with an initial horizontal speed of 0.600 m/s. How far will it land?
  46. PHYSICS

    without air resistance maximum range of projectile is obtained with an angle of ???? Can you please fill in the blank THANK YOU
  47. Physics

    Find the potential energy of a system often point charges. 7nC and 2nC separated by 0.03m
  48. physics

    when two lenses of focal length +10cm and -5cm are placed in contact then find the net power ?
  49. College Physics

    A 750 kg rocket accelerates straight upward from the ground at 60 m/s2. What is the force (thrust) provided by the engine?
  50. Physics

    Michael Jordan’s vertical leap was measured to be 122 cm. What was his takeoff speed, and how long would he be in the air?
  51. fristyear physics

    two girls a and b weighting 40 and 30 kg both of them pull 14m held by them.they will meet when covers a distance of?
  52. physics

    a small marble of negligible dimensions and of the mass 1.1kg is placed at a point A of a smooth frictionless circular
  53. Physics

    A baseball is thrown horizontally from a height of 3.6 meters at a speed of 24 m/sec. How far will it travel along the ground?
  54. physics

    A steel ball with a mass of 0.65 kg is swinging in a circle with a radius of 1.3 meters at a speed of 17m/s. What is the centripetal force?
  55. physics

    A motorcycle of mass 350kg has an acceleration of 3m/s when the resistance against motion is 200N.Calculate the force required
  56. physics

    A 4.40kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 74.0N
  57. Physics

    A motor cyclist travelling at 12m/s decelerate at 3m/s(squared)? How far does he travel while coming to rest?
  58. physics

    Why is parallax method not useful for measuring the distances of stars more than 100 light years away?
  59. physics

    A 102-kg man stands in an elevator that has an upward acceleration of 4.1 m/s2. The magnitude of the force exerted by him on the floor is about (g = 10 m/s2):
  60. Physics

    a boy whose weight is 600 N runs up a flight of stairs 10 m high in 12 second .What is his average power?
  61. physics

    A rocket is fired with an initial velocity of 200m/s at an angle of 60' to the horizontal.Find (1)the maximum height reached.
  62. physics

    In a tug of war match, each side pulls with a force of 500N, but the rope does not move. How much work is done?
  63. Physics

    Two point charges of magnitude 2.0 X 10^-7 C and 85 X 10^-8 C are placed 12 cm apart .What is the field intensity of each charge at the site of other ?
  64. Physics

    A tyre is suddenly brust when it was pumped to a presure of 4 atm at 20 degree celsius. Calculate the final temperature.
  65. physics

    Compute the electric field about a uniformly charged plane sheet using gauss law.
  66. physics

    Consider the static equilibrium diagram below. What is the net force acting along the positive x-axis?
  67. Physics

    A bolt requires tightening to a torque of 98 N-m. If a wrench is 28 cm long, what perpendicular force should be applied at its end?
  68. Physics

    a 50 g marble is released from a height 1 m above the floor. Calculate its momentum just before hitting the ground
  69. physics

    What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 10.5 m/s when going down a slope for 3.18 s?
  70. Physics

    are water waves at the beach with a velocity of 1.75m/s and a wavelength of 3.213 and frequency of 1/1.84Hz considered fast?
  71. physics

    two trains are moving towards each other with velocitied u1 and u2 see that the distance between them is x.the condition for them to not collide is
  72. Physics

    What is the momentum of a 54 kg ball just before it hits the ground when it is dropped from a height of 1.4m? What formulas should I use?!
  73. TVTC

    Physics...a diver of mass m drops from a board of 10m above water surface. find his speed at 5m
  74. physics

    A bullet in a gun is accelerated from the firing chamber to the end of the barrel at an average rate of 6.20*10^5 M/s^2 for 8.10*10^-4 s what is its muzzle velocity
  75. Physics

    Inside a metal conductor, why is it not possible to have a static charge configuration if there is a net electric field?
  76. Physics

    How high will you be when you stop rising if you jump upward with an initial vertical speed of 2 m/s? Answer to the nearest 0.1 m, and use g = 9.80 m/s2.
  77. physics

    if two forces 10N and 20N are inclined at angle 60degree to each other. Find the resultant force.
  78. Physics

    A red colored ball tossed upward reaches a maximum height of 3.0m. show that the initial speed is 7.7m/s^2.
  79. *physics*

    what is the smallest time in which a 9.00kW motor can lift a 3500 kg elevator to a height of 9.50m? use 10m/s^2 as g.
  80. Physics

    Determine the stopping distances for a car with an initial speed of 93 km/h & human reaction time of 0.80 s, for an acceleration a=−4.0m/s2.?
  81. Physics

    What is the power of an engine that pulls a 1000kg automobile at a steady speed of 10m/s along a level road?
  82. physics

    suppose that the two person,each of mass 100kg are 3meter a part in outer space.what is the magnitude of the gravitational
  83. physics

    A duck waddles 2.3m east and 7.0m north. what are the magnitude and direction of the ducks displacement with respect to its original position?
  84. physics

    how do you plot T2 2.14, 2.10, 2.08, 2.03, 2,20 and 2.30 and length .445, .54m, .497m, .50m, .53m and .555m on a graph and how do you find the gradient
  85. physics

    Calculate the speed of a satellite moving in a stable circular orbit about the Earth at a height of 4800 km.
  86. Physics

    A car going 50 m/s undergoes an acceleration of 2 m/s^2 for 6 seconds what is the final velocity ? How far did it travel while it was accelerating?
  87. lighthouse christian college

    Wich career can I take when I took english,afrikaans,lo,physics and pure maths?
  88. Physics

    The truck of a passenger car applies brakes at a velocity of 30 m/s and comes to rest 5 seconds later. What is the deceleration?
  89. AP Physics

    How fast (in rpm) must a centrifuge rotate if a particle 6.0 cm from the axis of rotation is to experience an acceleration of 130000 g's
  90. physics

    If you push a box for a distance of one meter with a force of 4,187 newtons How many calories have you used?
  91. Physics (Heat)

    Sitting under the fan on a hot day makes us feel cool.why? Give reason
  92. physics

    three forces of 10N,30N and 50N act at a point at 120° to each other.Find their resultant.
  93. Physics

    What mass must be added to 0.9kg trolly to give it an,acceleration of0.4m² when a 0.6n force is applied to it?
  94. Physics

    How many electrons pass a given point in the circuit in 17 minutes? The fundamental charge is 1.602•10^-19. And the current is 0.526315789
  95. Physics

    How many electrons pass a given point in the circuit in 17 minutes? The fundamental charge is 1.602•10^-19. And the current is 0.526315789
  96. pure maths, agriculture,life sciences, physics

    i want to know what does those subject i choose fall under which career
  97. physics

    calculate the energy evolved when 8 droplets of water of radius 1/2mm each combine into one. where s=0.072N/m.
  98. physics

    calculate the energy evolved when 8 droplets of water of radius 1/2mm each combine into one. where S=0.072N/m
  99. Physics

    Calculate the energy evolved when 8 droplets of water of radius 1/2mm each combine into one where s=0.072N/m.
  100. physics

    a cyclist does work at the rate of 500w while riding. how much force does her foot push with, when she is traveling at 8.0 m/s?
  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. 10
  12. 11
  13. 12
  14. 13
  15. 14
  16. 15
  17. 16
  18. 17
  19. 18
  20. 19
  21. 20
  22. 21
  23. 22
  24. 23
  25. 24
  26. 25
  27. 26
  28. 27
  29. 28
  30. 29
  31. 30
  32. 31
  33. 32
  34. 33
  35. 34
  36. 35
  37. 36
  38. 37
  39. 38
  40. 39
  41. 40
  42. 41
  43. 42
  44. 43
  45. 44
  46. 45
  47. 46
  48. 47
  49. 48
  50. 49
  51. 50
  52. 51
  53. 52
  54. 53
  55. 54
  56. 55
  57. 56
  58. 57
  59. 58
  60. 59
  61. 60
  62. 61
  63. 62
  64. 63
  65. 64
  66. 65
  67. 66
  68. 67
  69. 68
  70. 69
  71. 70
  72. 71
  73. 72
  74. 73
  75. 74
  76. 75
  77. 76
  78. 77
  79. 78
  80. 79
  81. 80
  82. 81
  83. 82
  84. 83
  85. 84
  86. 85
  87. 86
  88. 87
  89. 88
  90. 89
  91. 90
  92. 91
  93. 92
  94. 93
  95. 94
  96. 95
  97. 96
  98. 97
  99. 98
  100. 99
  101. 100