214,834 results, page 47

  1. Physics

    Calculate the momentum of a bullet moving with a velocity of 1000m/s ,if it has a mass of 0.01kg
  2. physics

    It takes 2.75s for the rock to hit the water at 54.45mph, how high is the bridge?

  4. Physics

    a 100 N chandelier hangs from the ceiling on 8 chains. What is the tension force on each chain?
  5. physics

    a car is uniformly decelerated from 90km/hr in a time of 10 sec calculate the 2 acceleration
  6. physics

    a mass if 10kg move with a velocity of 4ms-1find it kinetic energy.
  7. Physics 30

    A frictionless pulley (a 2.0 kg is on the floor while the 3.0 kg is 0.5m high) . when released, momentum of the 2kg is?

    What reaction occurs between hydrogen and helium which gives the heat and of the sun

    explain how exotic matter stabilizes a wormhole,google's answer was not direct
  10. Physics

    I drop an object from a height of 500.0 m. How long does it take to hit the ground?
  11. physics

    A bus is traveling 30 m/s and travels 20m. How far does it travel froom each point?
  12. Physics

    P= 231fraction numerator f t asterisk times l b over denominator s end fraction t= 14.3s W= ?
  13. physics

    How much kinetic energy does a 0.03 kg bullet traveling at a speed of 300 m/s have?
  14. Physics

    Find the magnitude of the dot product of the two vectors B=6i+j+2k, D=-1+3j. What is the angle between B and D
  15. physics

    The displacement of a particle is given by S = a+bt+ct^2. Deduce the dimensions of the constants,a,b,and c appearing in the question.
  16. physics

    determine the kinetic energy of a boy mass 40kg running with velocity of 3m/s
  17. Physics

    What is the wavelength of light that can cause a transition of an electron in the hydrogen atom from the orbit with n = 6 to n = 8?(answer in µm)
  18. physics

    if the distance between two bodies is increased by 25% then % change in the gravitational force is
  19. physics

    Which is the vector quantity that describes the shortest path between two points?
  20. Physics

    Do you think the sun's gravity is greater or less than that of all the other planets?
  21. physics

    what is the effective weight of a person of mass 60kg carried vertically up in a rocket with an
  22. physics

    What is the maximum walking speed of an adult man whose legs are each 1.2 m long?
  23. Physics

    Two vector of 5N and 6N flow they oriented to get the resultant of 7N,9N?( please solve this question)

    What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high?
  25. physics

    at what attitude the value of g would become one forth than on the surface of the earth?
  26. Physics

    a westward force of 20 N acts on a 2.0 kg object moving eastward at 60 m/s for 2.0 s. What is the resulting velocity?
  27. physics

    The equation y=5sin(3x-4)where y is in millimeters x is in metres and t is in seconds,represents a wave motion
  28. physics

    calculate the net force required to give a 3000kg trucks an acceleration of 2.5m/s^2
  29. Physics

    What is net capacitance if maximum potential is 40 volt and instant charge is 60 coulomb.?
  30. physics

    4N force applied on a body mass 20kg then calculate work done in 3sec?
  31. Physics

    What is the magnitude of the momentum of a 10,000-kg truck whose speed is 12.0 m/s? What is the kinetic energy?
  32. Physics

    An object of area 15sqcm and height 2 cm has a mass of 50g. what is its density in SI system
  33. Physics

    Determine the magnitude of current I3. Let the voltage of the bottom battery VB =13.0 volts and r= 1.0 Ω.
  34. physics

    a car moving through road what is the direction of force and surface of acting
  35. Physics,Mthe

    a body of mass is100an objet and volume is 10 .find the density
  36. physics

    A man walked 10 m north, then 5 m south. What distance did he walk? What is his final displacement?
  37. physics

    the time of flight of an object projected with speed 20m/s at an angle 30¡ã with the horizontal is
  38. Physics/Science

    How much heat must be removed from 15.0g of water at 10°C to become ice at 0°C?

    How much heat must be removed from 5.0g of water at 10°C to become ice at 0°C ?

  41. Physics

    Throw a stone straight up in the air. At its highest height what is its speed? Is it accelerating then?
  42. physics

    What is the resultant displacement when a ship sail 200km north and then 150km west

    What is the change in momentum of a car weighing 1500 kg when its speed increases from 36 km/h to 72 km/h uniformly?
  44. physics

    How much heat is needed to raise the temperature of 2kg of water to 10K?
  45. Physics

    A glacier advances at 7 × 10−6 cm/s. How far will it move in 3.7 y? Answer in units of cm. Plz help! I don't get it.
  46. physics

    the speed of a certain wave is 3.00cm/s. if its frequency is 0.20hz, what are its wavelength and period
  47. physics grade 11

    how do i figure out how fast a car is going when all i know is frequency?
  48. physics

    An airplane travels 250 km/h due West for 2 hours. Its average velocity is:
  49. Physics

    How much power is required to move a 1500 kg elevator at a constant velocity of 2.5m/s.
  50. physics

    If a hair dryer is rated at 900 W, how much energy does it require in 5 minutes?
  51. Physics

    Determine the radius R of an object undergoing circular motion at a velocity of 54 m/s with an acceleration of 90 m/s^2
  52. Physics

    If a racehorse starts from rest and accelerates at a rate of 4.7 m/s2, how long does it take the horse to go 20 m?
  53. physics

    . Two positive point charge of 12 μC and 8 μC are 10 cm apart. The work done in bringing them 4 cm closer is,
  54. Physics

    A ball thrown downward with an initial velocity of 20m/s.what will be itsvelocity after 5s
  55. physics

    What’s the direction of the electric field caused at the point (–2, 3) by an electron located at the origin?
  56. physics

    What’s the direction of the electric field caused at the point (–2, 3) by an electron located at the origin?
  57. physics

    When the experimental set up is immerse in water of refractive index n=1.5.what will be the charge in beta?
  58. physics

    the speed of the train increased from 15 mi/hr to 25 mi/hr in distance of 500 ft. calculate the average acceleration in ft/s^2
  59. physics

    How much work is done in lifting a 300 Newton rock 10 meters from the ground?
  60. Physics

    A mango is dropped and falls freely from rest what are its position and velocity after 1.0s,2.0s, and 3.0s
  61. Physics

    A cheeta can run with a speed of 29 m/s. Determine the distance travelled by a running cheetah in 8.6 s. D= 29/8.6 = 3.3s
  62. Physics

    What is the net force required to accelarate a 2000kg car to 6m/sec us equation F=ma
  63. physics

    150g of ice at 0'c is mixed with 300g of water at 50'c. calculate the temperature of a mixture
  64. physics

    What is the initial angle 0f projection of a projectile for which the range and the maximum height are equal?
  65. Physics

    What is power output of a 60 kg person who walks up a 4 meter flight of stairs in 4.0 seconds?
  66. physics

    A space vehicle accelerates uniformly from 80 m/s at t = 0 to 165 m/s at t = 10.0 s .How far did it move between t = 2.0 s and t = 6.0 s ?
  67. Physics

    A body is dropped from rest from a height of 8m. How long does it take to reach the ground?
  68. physics

    Uranium 235 has 92 protons in its atoms. Calculate the number of neutrons in this atom
  69. physics

    The motion of the truck is described by the equation V = 50t – 5t^2.Find: a.Value from t = 1.5 s to t = 5.0 s. b.Vinst at t = 3.0 s.
  70. Physics

    Make a position vs time graph of the following scenario: an object moves at 5.0 m/s for 4.0 s then at -2.0 m/s for 3.0 s.
  71. Physics

    What happens to the focal length of a converging lens as the radius of curvature is increased?
  72. physics

    A car has a velocity of 25m and accelerates uniformly to 45m/s in 10seconds.what is the acceleration?
  73. Physics

    For a pendulum that completes fifteen complete swings in 34.8 seconds, how much is the frequency?
  74. Physics

    What is the mass of water that has its temperature raised from 27°C to 32°C when it is heated by 5.0 x 106 J of heat energy?
  75. Physics

    Calculate the force acting on a body of mass 10 kg moving with a uniform velocity of 2m/s.
  76. Physics

    Finding of radius of capillary tube without knowing surface tension
  77. Physics

    Would electrons be ejected from aluminum if the incident violet light has a wavelength of 4.00 x 10-7 m?
  78. physics

    the air pressure in the tyres of a car increases during driving.Explain.
  79. Physics

    A gas initially occupies 4.5L at 350k and 22kPa. How many moles and molecules are present?
  80. physics

    Consider a drop of mass 1g falling from a height 1km.what is work done by gravity?
  81. physics

    On planet Mars, A pendulum has a length of 4L and period of 5T.what is the acceleration due to gravity ?
  82. Physics

    When a cubic meter of steam at 100°C condenses, how much energy is released?
  83. physics

    The density of a gas is 1.25 kg m – 3 at N.T.P. Find the Root mean square velocity of its molecules.
  84. Physics

    What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 1.00 nC and a = 7.50? (The positive direction is to the right.)
  85. Physics

    A car of 900kg accelerates uniformly from rest to a speed of 30 m/s in 15 seconds.what is its power?
  86. Physics

    When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.6 m/s in 0.11 s . Distance?
  87. Physics

    Calculate the weight of an object whose Mass is 5kg.(take g=10m\s
  88. Physics

    Calculate the weight of an object whose Mass is 5kg.(take g=10m\s
  89. Physics!

    A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?
  90. Physics

    What force is required to stop a 1500-kg car in a distance of 0.20 m if it is initially moving at 2.2 m/s?
  91. Physics

    is the average random kinetic energy of the molecules decreasing ? ( In cooling curve)
  92. physics

    calculate the kinetic energy of a body of mass 2kg moving with a velocity of 0.1m/s.
  93. Physics

    A and B are vectors in the same plane. If A= 8i+6j. Find the vector B such that |A+B| = 14.14 units and A is perpendicular to B.
  94. Physics

    Is there a relationship between the size of a musical instrument and the frequency of the sounds it produces? If so, then what is it?
  95. Physics

    What type of "fluid" Would exist if the temp was 850°c and pressure was 1.75 atm?
  96. Physics

    How come heat engines are more efficient when run at high temperatures?
  97. Physics

    In the olden days Christmas lights were wired in series. Why was this not very festive?
  98. Physics

    Find out the resultant of two forces of 4N and 7N acting at an angle of 140°
  99. physics

    An airplane starts from rest and accelerates at 11.5m/s^2. What is its speed at the end of a 655m runway?
  100. Physics (HELP)

    An object inside of the focal point of a concave mirror produces an image that is...
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