Physics!

74,547 results, page 40

  1. Physics

    An object has a mass of 8.99KG and is moving at 2.55 m/s. How much kinetic energy does it have ?
  2. science physics

    When all forces acting on an object are combined together, what's the result known as
  3. Physics

    If a thunderstorm is heard 5 seconds later. How far away did the lightning strike?
  4. physics

    Two vectors and have magnitude = 3.08 and = 3.08. Their vector product is = -5.07 + 2.00 . What is the angle between and
  5. Physics

    Why would you get an e3lectric shock if you flew a kite close to the electricity wires?
  6. Physics

    Why would you get an e3lectric shock if you flew a kite close to the electricity wires?
  7. math

    In physics class, the girl to boy ratio is 3 to 4. If there are a total of 14 students, how many girls are there?
  8. math

    In physics class, the girl to boy ratio is 3 to 4. If there are a total of 14 students, how many girls are there?
  9. physics

    A young girl is on a swing that completes 20.0 cycles in 25 seconds. What are its frequency and period?
  10. Physics

    Would it have been possible to make DNA a binary code?
  11. physics

    How long, in seconds, is required for a car traveling at a speed of 32 km/hr to travel 110 m?
  12. Physics

    A ball thrown upward at 60.0 m/s has what speed after 5 seconds? What equation do I use?
  13. Physics

    Find the velocity of a car of mass 1300kg and has kinetic energy of 3800 J.
  14. physics

    A 6.2kg piece of metal displaces 0.80 L of water when submerged.Find its density.
  15. physics

    What is the weight of each of the following masses at Earths surface? A) 25g. B)102kg. C) 12mg
  16. physics

    when a car goes around an 8-km track in 20-minutes. what is the average speed and velocity.
  17. physics

    State how the centripetal force is provided in the case of a satelite orbiting the earth
  18. Physics

    what is your power output if you climb a 2m ladder in 10 seconds? suppose your height is 565N.
  19. physics

    what are the methods of computing the veolicty of a particle in one- dimensona motion from a graph ?
  20. Physics

    Given 435 in^3 of nitrogen at 1340psi (absolute) at 72.0°F. Find the volume at 1150psi at 45.0°F.
  21. Physics

    what 2 properties of carbon make it a good material to use for motor brushes?
  22. physics

    Which of these is not an application of electromagnetic induction? A) Radio.B) None of these.C) Sound.D) Light.E) All of these are.
  23. physics

    To the nearest tenth of a Joule, what is its maximum kinetic energy of the pendulum in problem 2?
  24. physics

    If the slope in the above problem is 48 degrees, what is the coefficent of friction (to 2 decimal places)?
  25. physics

    Which of these is not an application of electromagnetic induction? A) Radio.B) None of these.C) Sound.D) Light.E) All of these are
  26. physics please help!

    find the speed of sound (in m/s) at -35°C at 1 atm pressure in dry air
  27. physics

    A 87-g ice cube at 0°C is placed in 886 g of water at 28°C. What is the final temperature of the mixture?
  28. physics

    A 87-g ice cube at 0°C is placed in 886 g of water at 28°C. What is the final temperature of the mixture?
  29. physics

    Explain how the specific heats of materials are measured using the technique of calorimetry.
  30. Physics

    If the cosmic microwave background radiation (CMBR) is at a temperature of 2.7K, what is its peak wavelength?
  31. Physics

    Calculate the magnitude of the force between two 3.95 µC point charges 7.4 cm apart
  32. physics

    The maximum displacement of a vibrating body on either side of its mean position is known as its
  33. physics

    a kangaroo goes 150 feet at 5ft/second how long does this take him.
  34. physics

    a horse walks 56 meters in 75 second. what is his average velocity?show the work
  35. physics

    what is the temperature increase of 6.4 kg of water when it is heated by a 7.7*10 square? (cp=4186j/kg*degrees celsius)
  36. Physics

    What is the electric field at a distance of 2 cm from 11 mC of negative charge? 2cm converts to 0.02 meters
  37. Physics

    can you use principle of density and buoyancy to explain how a cartesian diver works?
  38. Physics Help!!

    Comparing Einstein's and Newton's theories of gravitation, can the correspondence principle be applied? and Why or Why not? a)Yes b)No
  39. physics

    12.oo volt battery is connected in a series to 4 identical 5.00 ohm resistors what is the current
  40. physics

    a small pith ball carries a charge of -1.3 uc. how many excess electrons does this represent?
  41. physics

    How much time is required for sound to travel 1.4 km through air if the temperature is 30.0 c
  42. Physics

    How much work is done against gravity in lifting a 6.5-kg weight through a distance of 21 cm?
  43. physics

    how much work is required to give an object 600 J of potential energy?
  44. physics

    how much work is required to give n object 450J of kinetic energy?
  45. physics

    why when steady state conditions apply the rate of heat flow is the same?
  46. Physics

    A dancer completes 3.4 revolutions in a pirouette. What is her angular displacement? Help me get this answer please.
  47. Physics

    What is the typical wavelength of an X-ray ? I searched google and I couldn't find it. If you know the answer I'd appreciate it .
  48. Physics help!!!

    What potential difference is required in an electron microscope to give electrons a wavelength of 0.05 nm ?
  49. Physics

    A soccer ball is kicked with an initial speed of 27 m/s at an angle of 20° with respect to the horizontal.
  50. Physics

    A bicycle wheel of radius 0.2 m is spinning at a rate of 70 revolutions per minute.
  51. Physics

    What is the maximum theoretical efficiency of a steam engine operating between 60°C and 410°C?
  52. physics

    If pressure is given by P=A+B by t and -c by D +v where t and v are time and velocity respectively then find dimensional formula of A, B,C&D.
  53. physics

    a train starts from rest ad at the end of 90° seconds has a speed of 10km/h. What is the acceleration?
  54. physics

    how long will it take for an apple falling from a 29.4m tall tree to hit the ground? how
  55. Physics

    You drop a rock off a bridge. 4. (2 pts) How fast is it going after 2.0 s?
  56. Physics

    How much energy (in cal) is required to raise the temperature of 15.0g of isopropyl alcohol from 10.0 C to 25.0 C?
  57. physics

    how presence of two eyes help in binocular vision in our daily tasks?
  58. Physics

    A 68-g ice cube at 0°C is placed in 796 g of water at 30°C. What is the final temperature of the mixture?
  59. Physics

    A man kicks a soccer ball that ravels 68 m in 4.3 seconds. What is the initial velocity?
  60. physics

    A bus slows down uniformly from 56.3 km/h (15.6 m/s) to 0 km/h in 24 s. How far does it travel before stopping?
  61. physics

    A bus slows down uniformly from 68.4 km/h to 0 km/h in 23.7 s. How far does it travel before stopping?
  62. physics

    how much negative work is done by friction on a 2000-kg car if you slow down from 20 m/s to 10 m/s?
  63. physics

    How long does it take the second hand of a clock to move through 4.00 rad?
  64. physics

    calculate the impulse to stop a 1500kg car moving 90kmper hours
  65. Physics

    A baseball goes from zero to 40 m/s in 0.159 s. What is its average acceleration? Answer in units of m/s 2
  66. physics

    A ball is dropped from the roof of a building. How fast is it moving after 4.6 seconds?
  67. physics

    if I drop a camera 40m high,how long before it hits the floor? G= 9.81
  68. physics

    two masses one on an inclined plane at 30 degrees the other suspended
  69. physics

    4) How many forces act on an upwardly tossed coin when it gets to the top of its path
  70. physics

    A car traveling at +7.2 m/s accelerates at the rate of 0.65 m/s 2 for an interval of 2.4 s. Find vf . Answer in units of m/s
  71. Physics

    Calculate the distance (in ) that Larry runs if he maintains an average speed of 8.9 for 1 hour.
  72. physics

    A bus slows down uniformly from 50.9 km/h (14.1 m/s) to 0 km/h in 27 s. How far does it travel before stopping?
  73. Intergated chemistry/physics

    What is the speed (in m/s) of an object that has a mass of 2.5 kilogram and a momentum of 1,000 kg m/s?
  74. Physics

    How far apart are a proton and electron if they experience an electric force of 5.10N?
  75. physics

    plz tell me in which website can I get free engineering notes for first year B.E?
  76. Physics

    What is the wavelength of visible light of 6 x 1014 Hz frequency? 500 nm 400 nm 4000 nm 4 nm
  77. Physics

    What acceleration will you give to a 24.9 kg box if you push it horizontally with a net force of 82.8 N? __________ m/s2
  78. physics

    define the term torque or moment of force. Give its units and dimensions
  79. physics

    A car traveling at +6.3 m/s accelerates at the rate of 0.65 m/s^2 for an interval of 2.2 s. Find vf . Answer in units of m/s
  80. Physics

    what is a planes velocity if ithas anair speed of 18 and there is a 30 km/h wind blowing south
  81. physics

    1000 kg car moving at 10 m/s brakes to a stop in 5 s. The average braking force is ? n
  82. Physics

    Find the movement of a particle that moves along a straight due to the force F=-k*m*v(^2)
  83. physics

    What is the pressure inside a 33.1 L container holding 109.1 kg of argon gas at 399 K?
  84. Physics

    If 9.30 x 10^5 J of energy are transferred to 2.00kg of ice at 0 deg C, what is the final temperature of the system?
  85. Physics

    If 9.30 x 10^5 J of energy are transferred to 2.00kg of ice at 0 deg C, what is the final temperature of the system?
  86. science physics 2

    Sharlyn walks 5km/hr, how long will it take her to travel 15km?
  87. physics

    What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength?
  88. physics

    HOw much heait is needed to raise the temperature of 5 kg of water 5 degrees celsius
  89. physics

    A 5kg mass was lifted 365cm, how much work was done against gravity?
  90. physics

    What is the potential energy of a bear with the mass of 200 kg in 20 meter altitude of a mountain?
  91. physics

    A 0.255kg rock is thrown with a speed of 12.0m/s.How much energy does it initally passess?
  92. physics

    a 3.5 kg bowling ball is 6.5 m above the ground. How much potential energy does it possess?
  93. physics

    Can you find the pressure exerted on the floor by the heel if it has an are of 1.50 cm^2 and the woman's mass is 55kg?
  94. physics

    Jen pushed a box for a distance of 80m with 20 N of force. How much work did she do?
  95. Physics

    A 68.5kg man is standing still on an elevator that isn't moving, what is the normal force on him?
  96. Physics

    A 68.5kg man is standing still on an elevator that isn't moving, what is the normal force on him?
  97. physics

    what are the two things that determined the path of an object launched at an angle to the horizontal.
  98. physics

    c) A penny sits 12 cm from the center of a record turning at 33 1/3 rpm. What is the tangential speed in m/s?
  99. Physics

    For the problem (8.99 X 10^9 NM^2/c^2)(1 X 10^-6c) / (.1m)^2 = .90 N When I put this in my calculator I did not get .90N. Am I suppose to convert the units to get the answer. Thank you for your help.
  100. physics

    what is the refrevtion of waves? And what are the laws'of refraction? Also about phase change.
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