Physics!

74,459 results, page 57

  1. physics

    show that none of the principal moments of inertia can exceed the sum of the other two Please help me thank you
  2. physics

    A 1.56kg seagull dives through the air and gains 4495 of energy.What is the birds speed?
  3. Physics

    a child twirls a yo-yo about in a horizontal circle. The yo-yo has a mass of 0.20 kg and is attached to a string 0.8 m long. what is the velocity of the yo-yo? thanks!
  4. physics

    How much work is needed to lift a 400kg engine upward 1.5 meters out of a car?
  5. physics

    How much work is needed to lift a 400kg engine upward 1.5 meters out of a car?
  6. physics

    How much work is needed to lift a 400kg engine upward 1.5 meters out of a car?
  7. physics

    An Otto engine has a maximum efficiency of 33.1 %; find the compression ratio. Assume that the gas is diatomic.
  8. Physics

    What is the frictional force between the tires of a 2000 kg car and an asphalt road if the coefficient of friction is 1.2?
  9. Physics

    What is the frictional force between the tires of a 2000 kg car and an asphalt road if the coefficient of friction is 1.2?
  10. PHYSICS

    Find the electrical force that exist between two particles having 6.0 mC and 18 nC when they are 0.5cm apart
  11. physics

    How much potential energy does DeAnna with a mass 57.0 kg, gain when he climbs a gymnasium rope a distance of 3.7 m?
  12. Physics

    An object was fired with an initial speed of 33m/s at an angle of 32 degrees from the horizontal. How long was it in the air?
  13. Physics

    The crate, m=68kg, is pushed up an incline, θ=24degrees, at a constant velocity with Fp=500N. μk=?
  14. math in physics

    find the force if f between charges of 100mc -50mc located 50cm a part?
  15. science

    How can I find the physics behind why a wheel moves faster or slower than other wheels? Is this friction?
  16. Gr 9 Science - physics

    If all 3 resistors in a series 12V circuit are the same, what will the voltage be across resistor no. 3?
  17. physics

    A helicopter blade spins at 110 revolutions per minute. Its tip is 5.50 m from the center of rotation.
  18. Physics

    How far above the surface of the earth would you have to be before your weight is reduced by 12.89%? Please Help !
  19. Physics

    If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?
  20. Physics

    If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?
  21. Physics

    If a bullet was fired straight up at a speed of 30 m/s, what would be the total time for it to return to its starting point?
  22. Physics

    If a bullet was fired straight up at a speed of 30 m/s what would be the total time for it to return to its starting point?
  23. Physics

    Your friend of mass 150 can just barely float in fresh water. Find her volume.
  24. Physics

    To rearrange the furniture in your room, you need to exert a force of 20 N to push your desk 10 m. How much work do you do?
  25. physics 112

    what is meant by a change in temp of 1 degree celcius on the scale of a platinum resistance thermometer
  26. Physics

    While sitting in class your body exerts a force of 600 N on your chair. how much work did you do?
  27. Physics

    A meteoroid is speeding through the atmosphere, traveling east at 19.0 km/s while descending at a rate of 12.9 km/s. What is its speed, in km/s?
  28. Physics

    How much energy is released when 1 gram of steam condenses to water at 100 degrees Celsius?
  29. physics

    in order to catch a fast moving softball with your bare hand doing this reduce the catching forcebecause the what
  30. Physics

    Two resistors 3 Ù and 6 Ù are connected in parallel across a 6 V battery. What is the current flow through the 3 Ù resistor?
  31. Physics

    A shopper stands 0.6 m in front of a diverging mirror of focal length 0.2 m. Where is the image located and what is the magnification?
  32. Physics 202

    Find the period of a satellite with a circular orbit 350 above Earth's surface.
  33. Physics, Please Help

    How much time does it take a pulse of light to travel through 120 m of water?
  34. physics

    At what distance is the electrostatic force between two protons equal to the weight of one proton?
  35. Physics

    A car travells 20 km due north and then on a bearing of 90 degrees for 12km. Use a scale drawing.
  36. physics

    For a simple 15 upward ramp, what length would be needed for a runaway truck traveling 140 ?
  37. Physics

    You're sailboarding at 7.0 m/s when a wind gust hits, lasting 6.8 s accelerating your board at 0.47 m/s2 at a 35 degrees to your original direction.
  38. Physics

    If a light bulb draws 60 watts and I leave it on for 5 hours, how much energy has been consumed?
  39. Physics

    A 100kg steel beam falls from rest from a height of 20m, Find its impact speed.
  40. Physics

    Plane flying southwest at 155mi/hr. their is a wind from the west at 45.0mi/hr. what's the planes new velocity
  41. Physics

    Let U=(13i3−i). What is U†? Explicitly indicate multiplication with a * symbol. For instance, you should write 3*i+2 instead of 3i+2.
  42. Physics

    Calculate the speed in m/s at which Earth revolves about the Sun. You may assume the orbit is nearly circular.
  43. physics

    What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h?
  44. Physics

    A mass of 100 gram is fallen down,which will be the kinetic energy after 5 second of its fall?
  45. Physics

    500 calories of heat is added to 2.0 g of water at 80 degrees Celsius. How much steam is produced?
  46. Physics

    Let U=(13i3−i). What is U†? Explicitly indicate multiplication with a * symbol. For instance, you should write 3*i+2 instead of 3i+2.
  47. physics

    At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.60%?
  48. physics

    If you do 110 J of work to elevate a bucket of water, how much energy did you add to the gravitational field?
  49. physics

    If your boat weighs 1400 N, how much water will it displace when it’s floating motionless at the surface of a lake?
  50. Physics

    6. If your boat weighs 1200 N, how much water will it displace when it’s floating motionless at the surface of the lake?
  51. college physics

    a bus that is traveling at 30.0km/h speeds up at a constant rate of 3.5m/s2. what velocity does it reach 6.8s later?
  52. Physics

    An iron railroad track 1000 feet long is at a temperature of 0 oC. How much does it expand when heated to 33 oC?
  53. physics

    the sounds of a cricket gets stronger as you get closer to it. if you get twice as close, how much louder will the sound be?
  54. physics

    how long 1.2kw electric kettle take to heat 0.8kg of water from 20c to 100c?
  55. physics

    waves in a lake are observed to be 5 cm in length and to pass an anchored boat .8 s apart. the speed of the wave is
  56. physics

    What is the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is .90
  57. physics

    For non-conservative forces, the work done does depend upon the path taken. True or False?
  58. Physics

    A 3 cm flower is placed 40 cm from a converging lens with a focal length of 15 cm. What are the orientation, size and type of the image?
  59. physics

    an airplane taking off from a landing field has a run of 500m. Calculate the average acceleration in ft/s2.
  60. Physics

    A body with a mass of 75 kg is located at a height of 20 m. If it is allowed to free fall to the ground. What will be its velocity on impact?
  61. physics

    A20 kg box is suspended from the ceiling by robe that weight of the rope is 1kg find the tension
  62. physics

    if the direction of a magnetic field around a straight wire is counterlcockwise, which direciton is the current traveling?
  63. Physics

    determine the image distance for an object that is 45.0 cm from a double convex lens having a focal length of 15.0 cm
  64. Physics

    Newtons second law What net force acting on a 14kg wagon produces an acceleration of 1.5 m/s^2?
  65. Physics

    If the same shoe were dropped from a height of 40m, how many seconds would it take it to hit the floor?
  66. physics

    a body is moving with uniform acceleration of 10m/s2.if it starts from rest calculate its displacement after 5s
  67. physics

    a body is moving with uniform acceleration of 10m/s2.if it starts from rest calculate its displacement after 5s
  68. physics

    if the shortest lenght of the tube for resonance is 0.1m and next resonanc length is 0.35m what is the frequency of the vibration.
  69. physics

    If the same shoe were dropped from a height of 40m, how many seconds would it take it to hit the floor?
  70. Physics

    7) An apple falls from a tree (h = 9m). In the absence of air resistance, how fast is it traveling when it strikes the ground?
  71. Physics

    Can someone explain why electrons cannot exist in orbitals and why we need to describe their location in terms of probabilities.
  72. Conceptual Physics

    How do you calculate the time traveled while traveling 25 knots? It needs to be converted into km/hr.
  73. Physics

    Calculate the total energy of 4.0 kg object moving horizontally at 20 m/s 50 meters above the surface. Please help me!!!!!
  74. physics

    Every few hundred years most of the planets line up on the same side of the Sun
  75. physics

    how much power require to pull the water from horizontal distance about 100 feet ?
  76. Physics - Magnetism

    The direction of magnetic lines of force change if an iron piece is placed in its field. Why?
  77. physics-magnetism

    The direction of magnetic lines of force change if an iron piece is placed in its field. Why?
  78. physics

    if a skydiver with a surface area of 2m sq falls at a steady speed of 55m/s with a force of 900N what is the pressure on her?
  79. Physics

    Calculate the current in the 240-Ώ filament of a bulb connected to a 120-V line. Power = IV
  80. physics

    What is the repulsive force between two pith balls that are 12.0 cm apart and have equal charges of -39.0 nC?
  81. jru-physics

    what potential energy is acquired by a block of steel whose mass is 50 kg when it is raised 200 cm?
  82. physics

    A car travels in a straight line for 4h at a constant spped 73km/h. What is its acceleration? Answer in units m/s^2
  83. physics

    A rock is dropped from a 196-m-high cliff. How long does it take to fall (a) the first 98.0 m and (b) the second 98.0 m?
  84. physics

    A rock is dropped from a 196-m-high cliff. How long does it take to fall (a) the first 98.0 m and (b) the second 98.0 m?
  85. physics

    A copper wire has a diameter of 1.532 mm. What magnitude current flows when the drift velocity is 0.500 mm/s?
  86. Physics

    What net external force is required to give a 30 kg suitcase an acceleration of 2.5 m/s2 to the right? Answer in units of N
  87. physics

    the earth is approximately sphere of radius 6.37*10^6 meter.what is its surface area in square km? what is its volume in cubic km?
  88. Physics 102

    What would be the path of the Moon if somehow all gravitational forces on it vanished to zero?
  89. Physics

    The time at which it took the arrow to reach the bulls eye is .6 seconds and it will land 1.8m under the bullseye
  90. physics

    a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay?
  91. english

    is ap physics very challenging and difficult because i need to know if im going to be able to go through t next term
  92. physics

    You throw a ball downward from a window at a speed of 2.7 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below?
  93. Quantum Physics

    What is the probability current density of a particle with wavefunction ψ(x,t)=exp(iℏ(px−Et))?
  94. Physics

    An automobile is traveling 65mph. Its brakes decelerates at 6.0mps. How long will it takes to stop the car?
  95. Physics

    Calculate the force of gravitational attraction between two spheres of mass 10.1kg and 45.2 kg that are 38.5m apart.
  96. Physics

    Calculate the force of gravitational attraction between two spheres of mass 10.1kg and 45.2 kg that are 38.5m apart.
  97. PHYSICS

    At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?
  98. Physics

    An object 6.70 cm high is placed 15.1 cm in front of a convex mirror with radius of curvature of 8.55 cm. Where is the image formed?
  99. Physics

    Where does it takes less time to boil eggs: in a pan of boiling water or in a pressure cooker?
  100. Physics

    Where does it takes less time to boils eggs: in a pan of boiling water or in a pressure cooker?
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