214,567 results, page 63

  1. physics

    An 80 kg skateboarder going 10 m / s is launched nearly vertically off a ramp as shown. Approximately how high does he go?
  2. physics

    a fire hose held near the ground shoots water at a speed of 6.4m/s, at what angle should
  3. Physics

    Katie kicks a football at a 52 degree angle and a velocity of 31 m/s. At what times will it be 10 meters off the ground?
  4. physics

    A aluminum wire has a diameter and uniform electric field of imposed along its entire length
  5. physics

    A crate is given an initial speed of 5.0m/s up the 22.5∘ plane shown in (Figure 1) . Assume μk = 0.12.
  6. Physics

    You swing a 2.40kg stone in a circle, using the full length of a thin 60.0cm rope.
  7. Physics

    Determine Centripetal Acceleration acting on the person standing at the equator? (the radius of earth is given)
  8. physics

    How fast will a roller coaster, with a mass of 1200 kg, be moving at the bottom of an 18 meter tall hill?
  9. Physics

    Explain how you would determine how much error there is between a vector addition and the real results.
  10. Physics Science

    How many kilocalories of heat are required to melt 20.0 kg of ice at 0°C? Okay so the given is m=20.0kg Ti=0°C HeatFusionIce=80 kcal/kg
  11. physics

    Find the radius of a spherical asteroid that has a density of 4600 kg/m3 and an acceleration due to gravity of 0.11 m/s2 at the surface. km
  12. physics

    How much heat (in kJ) will it take to bring 56 kg of ice at -8°C to dry steam? Answer to 3 significant figures
  13. ap physics

    a 37.4-kg traffic light is supported by two wires prove you answer applying newtons law
  14. physics

    Fall time under g is sqrt 2h/g. Can someone give a derivation from the equations of motion please? Thanks.
  15. So what about this one bob? Physics

    Which of the following is closer to a guess? hypothesis<<<<< law question theory
  16. physics

    A ball strikes against the floor and returns with double velocity.In which type of collision is it possible?
  17. Physics

    How much force is required to accelerate a 1500kg car to a speed of 17m/s in a distance of 45m? Thank you.
  18. physics

    a horse pull a barge with a force at an angle of 30¡ã to the horizontal for a distance of 20km . find the work done.
  19. physics

    An ambulance is going away from me @ 40mph with a siren @ 1000Hz.Will I heat a higher or lower frequency
  20. physics please help

    the potential difference across a load is 9V. explain what this means in more fundamental terms.
  21. Physics

    A 50 cm diameter wheel rotates through 25 radians. How do I figure out the amount of distance it will move?
  22. physics

    Can the gravitational potential energy of a baseball ever be negative? Yes No Explain without using a formula.
  23. Physics

    A weight suspended from a spring is seen to bob up and down over a distance of 11 cm twice each second.
  24. physics

    An object falls a distance h from rest. If it travels 0.45h in the last 1.00 s, find the time and the height of its fall.
  25. physics

    would someone in a lift feel lighter or heavier as it accelerated upwards? explain your answer.
  26. physics

    a tsunami originating in japan has a wavelength of 10^5 m and a period of 10 mins. how long does it take to travel 8000km?
  27. Physics

    What is the maximum total force exerted on a 71 kg astronaut by her seat during the launch of the Space Shuttle?
  28. Physics

    Initial velocity is 21 m/s, the angle is 40 degrees, 20 meters away from the wall. How long is the ball in the air for?
  29. physics

    Calculate the extension that would be produced by a 20N force if 15N extends a spring by 3cm
  30. physics

    with what velocity must a ball be thrown in order to achieve the height of 50 ft.? and how long will it stay in the air?
  31. Physics

    Leroy, who has a mass of 72 kg, is skateboarding at 5.9 m/s when he smacks into a brick wall and comes to a dead stop in 0.2 s.
  32. physics

    What is the relationship between the coefficient of friction and the time that it takes the object to reach the bottom of the ramp?
  33. physics

    how much work is done by the upward force of your head on a 50 N rock that you carry horizontally across a 10 m room?
  34. physics

    A construction crane's cable lifts a 49.5-kg box upward with an acceleration of 1.30 m/s2. Find the tension in the rope. N
  35. Physics

    A volleyball is served at an angle of 35 degrees with an initial speed of 5 m/s. What is the maximum height reached by the ball?
  36. Physics

    A football is kicked at an angle of 40 degrees with an initial speed of 7 m/s. What is the horizontal distance traveled by the ball?
  37. physics

    What design aspects of the snowmobile make it particulary useful for travel over ice and snow?
  38. physics

    a force of 10N acts on an object and raises its speed from 0 to 5 m/s in 10s.calcuate the average power.
  39. physics

    In a uniform magnetic field, can an Amperian loop ever have a non-zero value
  40. physics

    A wheel has turned through 120 revs in 10 s after starting. find the angular acceleration.
  41. physics

    A solid of relative density 1.25 is found to weigh 12g in water find its weight in air
  42. Physics

    A dragster's top acceleration is 60m/s^2. If it accelerates for 3 seconds from the starting line, how fast will it be going?
  43. physics

    a body projected with velocity 30m/s an angle 30¡ã with horizontal maximum height attained by he object is.........?
  44. physics

    At 7.15 cents per kilowatt-hour, what does it cost to leave a 75.0W light burning 24.0 hours a day?
  45. physics

    A 25HP electric motor turning a 1800 RPM will produce how many foot pounds of torque?
  46. Physics

    1. A cannon ball M = 10.0kg with V = 2.4×102m/s is broken into 2 parts, if m1 = 6.4kg with angle 37° and m2 with 53°, what is the magnitude of v1 and v2?

    Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin
  48. physics

    a cyclist moves around equilateral triangle6kn/h10km/h,12km/hfind average speed?

    Determine the resulting temperature when 1kg of ice at 0 Degree celcius is mixed with 9kg of water.
  50. physics

    A boy drops a mango from a tree it falls without rebound wat happens to its momentum
  51. Physics

    An arrow is shot horizontally with a speed of 20 m/s from the top of a tower 60 m high .The time to reach the ground will be???????
  52. Physics

    Steam of mass 11.0 g at 100°C is added to 126.7 g of ice at 0.00°C. Find the final temperature of the system.
  53. physics

    Mechanical energy is the difference between the kinetic and potential energies of an object. true or false?
  54. physics

    a person covers a distance of 31 km and displacement 3 kms and time 25.5 min calcuclate average velocity
  55. Physics

    What is the tension in a 1-meter string that is spinning a 0.5-kg rock in a horizontal circle 3 times per second?
  56. physics

    You have a mass of 60 kg and run up some stairs that are 5 m high in 6 seconds. How much power did you produce?

    'show that a 2.5m length of wire with cross section area 0f 1.0mm and resistance of 0.75ohms has a resistivity o f 3.0 ×10-7'
  58. Physics

    If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?
  59. physics

    damon,reiny,steve,ms sue.plz get a solution 2 my question please itz urgent!!!
  60. physics

    light from the sun travels 1.5x10km to reach the earth .how long does it journey take in minutes?
  61. physics

    A bicycl rider starts from rest and moves with uniform acceration of 1.5m\s^2 it is velocity reachs 7.5m\s of a distance .......
  62. physics

    A 2000-kg car starts from rest and gains a velocity of 20 m/s in 5 /0s. What force was applied on it? What formula/s will I use?!
  63. Physics

    From what height must water fall from a dam to strike the margine waves w/ a speed 30m/s.

    what is the central acceleration of an automobile driving at 40 kph on a circular tracks having radius of 30m?

    Calculate the centripetal force on a 2100 kg carrounding a curve of 175 m radius at a speed of 60 kph.
  66. physics

    Results for: In An Ideal Transformer, The Voltage And Current Are 220V,2A And Those In Secondry Are 2000V, IA. The Value Of I Is?
  67. physics

    How much heat is needed to convert 1.0kg ice at -5celsius to steam at 105 celsius?
  68. physics-heat transfer-urgent pls

    Calculate the energy absorbed when 8.5g of ice is melted at 0 Celsius. thank you
  69. Physics

    What are three different kinds of automatic switching devices? What are the conditions that cause the on/off action of the switch?

    compute for the density of a brake fluid used in a car which has a volume of 600cm^3 and a mass of 100 g?
  71. physics

    Suppose the horizontal sweep of an oscilloscope takes 80ms how many cycles of a 100 Hz wave will be shown?
  72. Physics

    A race car moving at 35 m/s is uniformly slowed to a stop in 50 s. Find 1) acceleration, and 2) stopping distance.

    What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart.
  74. physics

    Power applied to a particle varies with time as P=(3t^2-2t+1)W. Find the change in kinetic energy between t=1s and 4s.
  75. Physics

    An object initially at rest experiences an acceleration of 9.8 m/s^2. How much time will it take to achieve a velocity of 58 m/s?
  76. physics

    a body travels from rest with acceleration 8ms find its velocity when it has covered a distance of 100m
  77. AP Physics

    What is the minimum work needed to push a 1025 kg car 290 m up a 17.5° incline with zero friction?
  78. Physics

    mike is skiing downhill at a 25 degree angle. if his weight is 350N assuming there is no friction what is his acceleration

  80. physics

    a 4200 kg helicopter accelerate upward 3m/s^2. lift force is exerted by the air on the propellers?(g=10m/s^2)
  81. Physics

    How fast must a plane fly at a latitude of 41.9° so that the sun stands still relative to the passengers?
  82. Physics

    How many coulombs pass through a wire that carries a current of 3.2 A for 5.0 h? I=Q/t Q=It Q=3.2*5*60 Q=960 I am told this is not the correct answer.
  83. Physics

    What would be the average velocity of an object falling 1.25m from the rest, just as it strikes the ground?
  84. physics

    an object takes 0.35 seconds to hit the floor, what height did it fall from? is the way to calculate it h = gt^2 / 2 so would it be = h = .5 * 9.8 * 0.35^2
  85. Physics

    Wat direction will the Electric Field Lines be in a parallel plate capacitor containing a dielectric ?
  86. physics

    2)if a curved of radius 50m is banked at 30 degree will a car travelling at 60 km/hr along the curve will safe?
  87. physics

    A stone is projected vertically upward with a speed of 20 m/s. a. What is its velocity at the end of 2s? b. What is the height reacted after 2s?
  88. Physics

    Calculate the speed with which a swimmer enters water if she slides down a frictionless ramp that is 2.6 m high
  89. Physics

    How long it takes a car at 20m/s to come to a stop without friction, obstacles, or breaks ?
  90. Physics

    Find the range at an arrow that leaves a bow at 45 m/s at an angle of 50 degrees above the horizontal level.
  91. Physics

    What is the magnitude of the momentum of the 0.057-kg tennis ball when it travels at a speed of 29 m/s? Earth is the frame of reference.
  92. physics

    calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v
  93. physics

    calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v
  94. Physics

    A ball is thrown vertically upward with a velocity of 30m/s. Determine the maximum height reached
  95. Physics

    What is the total time of flight of an object projected vertically upwards with a speed of 30m/s? (g=10m/s^2
  96. physics

    When the ray of light travels from air to glass slab and strikes the surface of separation at 90 degree , then it ..........
  97. Physics HW Plz help

    Why can't most objects like an apple travel at speeds above the speed of light?
  98. Physics

    How much work is required to bring a 1000 kg racing car traveling at a speed of 60 km/hr to rest?
  99. Physics

    A boy sliding down a frictionless plane inclined at an angles 35° with the horizontal. What is the acceleration of the book?
  100. Physics

    the current in an rc circuit if the resistance is 20 ohms the capacitance is 0.002 farad the emr is 12e^-10t
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