1. Quick physics help

    you hear a thunder 4 seconds after you see the lightning. how far away is the storm?
  2. Honors Physics

    How do you determine the mass of fuel in a semi truck?
  3. Physics

    Can someone please tell me how to calculate the percent of error for a set of data points? thanks so much!
  4. 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
  5. physics

    A car has a uniform velocity of 108km/h. How far does it travel in 1/2 min
  6. physics

    what is the speed of 1kg object when the kinetic energy is 1 joule
  7. PHYSICS

    Can someone please tell me how to calculate the percent of error for a set of data points? thanks so much!
  8. physics

    when a car drives off a cliff why does it ratate forward as it falls?
  9. physics

    An astronaut shoots you in space given that the bullet is weightless, could it injure you?
  10. 11th grade physics

    im not procrastinating i really don't understand it. im not asking for the answers im just asking for a little more help??
  11. physics

    What is the apparent weight of a 55 kg person in an elevator accelerating downward at 2.2 m/s2?
  12. Physics

    By what distance must two charges of +2 C and +4 C be separated so that the repulsive force between them is 4.10 1010 N?
  13. Physics

    What is the electric force of attraction between charges of 3 C and -4 C separated by a distance of 2 m?
  14. physics

    pls show answers and work with the questions i have posted.
  15. physics

    What is the energy of a photon of yellow light with a frequency of 5.14 × 1014 Hz?
  16. Physics Can someone please help thnks

    reply to my post earlier julie thnk u please
  17. Physics

    Which object had more potential energy when it was lifted to a distance of 10 meters?
  18. Physics

    Give 3 examples of applications of the conservation of angular momentum.
  19. college physics (bob again

    would 2.68 meters be a reasonable height for the cliff?
  20. physics

    if the earth exerts a force 300n how much does the body weigh?
  21. physics

    Complete the following nuclear reaction: ^16,v8 O + ^4, v2 He → ________ + ^19, v10 Ne 1p 1n 2H 3H
  22. Physics

    Can someone please tell me how to calculate the percent of error for a set of data points? thanks so much!
  23. physics

    How much potential energy does a 20-kg barrel have when it is in the truck whose floor is 5.0 m above the ground?
  24. physics

    of the following the largest quantity is a] 0.047 cm b] 47x10-4 cm c] 4.7x 10-4 cm d] 0.00047x10^2 cm e] 0.000047x10^6 cm
  25. Physics

    If you had to straighten out a refracted ray that went through a lens with a focal length of +15 cm, what could you do?
  26. physics

    derive the formula v0=sqrt((deltaX)squared)*g)/2*deltaY
  27. physics

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

    Two charged spheres are 5.25 apart. They are moved, and the force on each of them is found to have been tripled. how far apart are they now?
  29. physics

    Two charged spheres are 5.25 apart. They are moved, and the force on each of them is found to have been tripled. how far apart are they now?
  30. physics

    two forces 5N and 7N act on an object respectively.When will the resultant of the two vectors be at a maximum?
  31. physics

    how much power does a 63kg athlete develops as he climbs a 5.2m rope in 3.5 second
  32. Physics

    A car accelerates from rest to 90km/h in 10 seconds.What is its acceleration in m/s2?
  33. physics

    This isn't so much a question, but a query: What does this mean? K.E. = 1/2 mv2 I can do the homework on my own if someone lets me know. Thanks.
  34. physics

    3 factors that we must always give when expressing a force vector quantity
  35. physics

    A mass accelerate uniformly when the resultant force acting on it is what?
  36. physics

    3 factors that we must always give when expressing a force vector quantity
  37. physics

    3 factors that we must always give when expressing a force vector quantity
  38. Physics

    Explain why a balloon expands when heated and contracts when cooled.
  39. Physics

    Write 2.38x10 to the 6th power in standard notation
  40. Physics

    What is the power output of an engine the does 60,000J of work in 10s?
  41. physics

    How much time does it take a pulse of light to travel through 180\({\rm {\rm m}}\) of water?
  42. Physics

    How do the initial and final horizontal velocities of a projectile compare?
  43. Physics

    How do you determine the average velocity on a position-time graph?
  44. physics

    Why does a 10 gram bullet have more momentum traveling at 200m/s than at 20m/s?
  45. Physics help please

    A 0.504 m length of conducting wire carrying a current of 62.1 A is?
  46. physics

    A plane cruising at 247 m/s accelerates at 28 m/s 2 for 8.7 s.How far will it have traveled in that time?
  47. physics

    in electrolysis how is conductivity affected by the molecular mass of the solution
  48. physics-14

    If room temperature is 70 degrees farenheit,what is kelvin?____
  49. Physics

    Two spheres with masses of 5.00 g and 10. kg respectively are .500 m apart. calculate the force of attraction between them.
  50. physics

    how much work is being done if a 100 N box is lifted 3 meters off the ground???
  51. Physics

    During the pre-industrial era, what were the Carbon Dioxide levels like?
  52. Physics

    I have to check that Maxwell's equations are dimensionally correct. How the hell can I do this? Thank you very much.
  53. physics

    Which of the following properties of a ball is conserved as it falls freely in a vacuum?
  54. Physics 30

    Vectors A) 3.5 cm North B) 4.2 cm West Algebraically subtract B from A(B-A) Whaaaa? Please help
  55. physics

    what happens to the force of frictionif the coefficient of friction was reduced by one thrid
  56. physics

    How many joules of potential energy does a 1.5 kg book gain when it is elevated 4.2 m?
  57. Physics

    In a calorimeter can whose behaves thermally is.if it were equivalent with 40g of water
  58. gr.10 physics

    could someone please help me with this? Rearrange and simplify for r when A=3.14r^2 by the way, 3.14 is supposed to be pi, but i don't know how to write it...
  59. physics

    what is the power if it takes 11s to drag the sled 80m?
  60. Physics

    The sum of 5.2713x10^3 + 6.54014x10^3 expressed to 4 significant figures would be?
  61. physics

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

    If radius = 1.25 when i am swinging a bucket around and around what is the slowest possible speed i can go without it spilling?
  63. Physics

    what maximizes our ability to recover elastic potential energy?
  64. physics

    Your weight is 110 lb. What is your mass in kilograms? Answer in units of kg.
  65. Physics

    What does wave interference have to do with the electron energy levels in an atom?
  66. physics

    if you exert a force of 500 N to walk 4 m up a flight of stairs in 4 s, how much
  67. physics

    How much force is needed to accelerate a 50-kg rider and her 250-kg motorcycle at 5 m/s2?
  68. physics- urgent

    an object travels at a rate of 48.5 km/sec. how many cm/min would that be
  69. Physics

    An airplane normally flies at 280 km/h. What is its airspeed if it experiences 80 km/hr headwind?
  70. physics

    a 20.0L sample of hydrogen gas has a mass of 1.80g. What will its density be in g/ml?
  71. Physics

    An airplane normally flies at 280 km/h. What is its airspeed if it experiences 80 km/hr headwind?
  72. Physics

    When an object is immersed in a fluid describe the buoyant force?
  73. physics

    a skydiver has amass of 140 kg.at what speed will she have a momentum of 10,000 kg m/s?
  74. Physics

    How does the index of refraction relate to the speed of light in a substance?
  75. Physics

    If a clock says 10:30 am and the second hand rotates 960 degrees what time would it be?
  76. physics

    Find the relation between phase difference and path dofferense
  77. Physics

    Determine the relative density of a regular shaped object
  78. Physics

    The result of 1.51751x10^4 divided by 6.451x10^3 to 2 significant figures is?
  79. Physics

    What is the work done by a crane that lifts a 1,200kg object 30m?
  80. physics

    Pls what is the specific of water? Is think is 4200 but my mates are saying it's 4180
  81. Physics

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

    Why do we see more mirages in southern states and in the summer than at other times or places
  83. physics

    How much work will a net force of 56·N west do on the cart as it moves 1·m?
  84. PHYSICS

    As the distance of the object from the lens increases,what happens to the image size?
  85. physics

    Is there any investigations of forced oscillations of the spring-mass system?
  86. science

    How do the principles of physics and chemistry both come into play when developing new materials?
  87. physics

    How much work is required to lift a 5.2-kg concrete block to a height of 3.1 m?
  88. Physics

    what is the kinetic energy in joules of a 1040-kg automobile traveling at 81 km/h ?
  89. physics

    How much work does gravity do on a 0.120-kg ball falling from a height of 17.0 m?
  90. physics

    How much work must be done to stop a 1070 kg car traveling at 111 km/h?
  91. Physics

    calculate the force between two identical charges of 1.0 x 10 exp -9 C separated by 1.0 Cm
  92. physics

    all electric charges are multiples of the charge on an electron, or atom?
  93. modern physics

    Calculate the commutator [ p, e^ik.x ] where the function e^ik.x may be expanded as: e^ik.x = ∑infinite,n=0 (ik.x^n/n!)
  94. science

    How do the principles of physics and chemistry both come into play when developing new materials
  95. Physics

    What is the peak wavelength and observed color of a 50,000 K star?
  96. Physics

    How does the length, thickness, and temperature of a wire effect the resistance?
  97. physics

    When a nucleus emits a beta particle, it's atomic number is ?
  98. Physics

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

    Explain fully one pro and one con of nuclear energ
  100. Physics

    If your car accelerates from rest at a steady rate of 4 m/s2, how soon will it reach 84 km/h