Physics!

74,547 results, page 96

  1. Physics

    A 2 kg object is moving 6 m/s. It compresses a spring 1 meter that has a spring constant of 8 N/m
  2. physics

    find the tension in each cable. T1=68.0 degree T2= 25.0 degree weight= 27500 N
  3. Physics

    Friction is usually the killer of efficiency. How does a ramp relate to friction?
  4. Physics

    The speed of light in polythene is 1.99 x 108 m/s What is the index of refraction of polythene
  5. physics

    Voltage=12V. R1=2.0ohms and R2=4.0ohms. Find the power used by R2.
  6. Physics Speed of Sound

    Does sound travel faster in wood or water?
  7. Physics

    Find the equivalent resistance in 16 ohms and 8.0 ohms connected in parallel.
  8. Physics

    Find the equivalent resistance in 16 ohm and 8.0 ohm connected in parallel.
  9. physics

    12.8 kg of ice at 0 C is dropped into 3.3 kg of water at C. What fraction of the ice melts? =
  10. Chemistry/physics

    The KE of a hydrogen atom's electron is 12.65 eV. Calculate the velocity of the electron? Known: KE=mv^2
  11. physics 2

    find the speed of proton 0.08m,mass of proton is 1.67x10^-27 kg
  12. Physics 2

    An AM radio station has a wavelength of 300 m. find this station’s frequency?
  13. physics

    a particle moves under the effect of force f2 from x=0 to x=4 of the work done by force
  14. physics

    if the diamter of a human hair is (50*10^-6 m) estimate the volume of hair on your head
  15. physics

    What is the acceleration of a car going from 3.0 x 101 km/hr to 1.20 x 102 km/hr in 3.0 x 101 sec?
  16. physics

    It takes 242 kJ of work to accelerate a car from 20.2 m/s to 28.2 m/s. What is the car's mass?
  17. physics

    Find the height of a cliff if the 87.6 kg cliff diver hits the water at 15.5 m/s.
  18. Physics Science

    How many grams of water at 20°C are necessary to change 800g of water at 90°C to 50°C?
  19. Chemistry Physics

    How many grams of water at 20°C are necessary to change 800g of water at 90°C to 50°C?
  20. Physics

    A glass block has a refractive index of 1.49. What is the critical angle for the block?
  21. physics

    Jake's momentum is 100kg*m/sec when he walks at 2 m/sec. What is his mass?
  22. physics

    What is the magnetic force by infinite wire on on a loop in magnetic field ?
  23. physics

    What is the gravitational acceleration on a planet where a 2.0 kg mass has a weight of 16 N on the planet`s surface?
  24. Physics

    1) If = 2.0 cm, due E and = 5.0 cm, due W Determine: a) R = -A + 2B b) V = - 2A - B c) F = 3A - B My Answers R= 8, V= -1, F= 1 Is this correct and how do you know when direction it's going to be?
  25. Physics

    You are given a vector in the xy plane that has a magnitude of 85.0 units and a y component of -40.0 units
  26. Physics

    What is the mass of a child if the force of gravity on the child's body is 100 N? A. 9.8 kg B. 4.45 kg C. 22.5 kg D. 10.2 kg what?
  27. Physics

    If the relative density of a metal is 19 what will be the mass of the metal when immersed in water.
  28. physics

    A spring 30mm by a force of 15N calculate the workdone by the force
  29. Physics

    A force of 64 N is applied on a body producing an acceleration of 2.4 m/s^2. What is the mass of a body?
  30. physics

    The ratio og intantanous charge and maximum charge on the plates of capacitor at T=RC is ??
  31. physics

    The ratio of instantanious charge and maximum charge on the plates of capacitor at T=RC is ??
  32. physics

    express the atmospheric pressure of 103360 pa in bar and milli bar
  33. physics

    An object is launched at a speed of 15 m/s. If it rises to a height of 2 m, at what angle was it launched?
  34. Physics

    Find the work necessary to run a football (1 lb) from the 2-m mark to the 52-m mark.
  35. Physics

    What is the energy stored in a spring with k= 280N/m that extends by 0.2m? k- Spring constant
  36. Physics

    What is the difference between Electro-Motive-Force and Potential-Difference?
  37. physics

    Calculate the gravitational force in N between a 17.3 kg object and 14.8 kg object that are separated by 1.02 m
  38. Physics

    A soccer ball is kicked with 26.5n and accelerates at 6.5 m/s 2 to the right. What is the mass of the ball?
  39. PHYSICS

    Is it a must that a nucleus must have opposite nature with the electron
  40. physics

    A ball is thrown straight up at 20.0 m/s. How fast is the ball moving after 2.00 s?
  41. Physics

    a spring extends by 10 cm when a mass of 100g is attached to it. what is the spring constant?
  42. Physics

    Sound from a 55dB horn is measured at a distance. What is the intensity of the sound in W/m2?
  43. Physics

    A man goes 123km North and then 123km to south.what is his displacement?
  44. Physics

    It takes 170 kJ of work to accelerate a car from 21.5 m/s to 27.0 m/s. What is the car's mass?
  45. physics

    A force makes an angle of 60° with y-axis.Find x-component of force.
  46. physics

    The period of an ocean wave is 20 seconds. Calculate the wave's frequency.
  47. physics

    what is the frequency of unknown fork if 8 beats in 8 seconds are heard with each fork
  48. physics

    An aircraft is flying at Mach 1.34 in air at -30C. What is the speed of the aircraft?
  49. Physics

    When a body vertically projected with 200m/s. then velocity of body at490m
  50. Physics

    If a spring has a stiffness of 950nm-1, what work will be done in extending the spring by 60mm?
  51. physics

    The length of a steel rod at 5°C is 12.500 m. What is its length when heated to 154°C?
  52. Science-Physics

    Why is it easier to float in the Dead sea than the Caribbean sea?
  53. physics

    dissplacement vector A is 4.5 km North, vector B is 3.0 km 50 degrees N of W. Find their resultant
  54. Physics

    What is the airspeed relative to the ground of an airplane with an airspeed of 120km/h when it is in a 90-km/h crosswind?
  55. physics

    Calculate the component of a force of 200N at a direction of 60degre to the force
  56. Physics

    Under what condition is average velocity equal to instantaneous velocity?
  57. Physics

    Find the resultant of 50 N acting east and 30 N acting 30 degrees northeast
  58. Physics

    If 0.01% of electrons are removed from 18 gm water, then calculate the charge produced in the water.
  59. Physics

    A solid weighs 6.4 kg in air and 5.6 in water. Find the density of the solid
  60. Physics

    A 50 N box is pushed 5 m up a 30 degree inclined plane. What work is done on the box?
  61. Physics

    It takes 226 kJ of work to accelerate a car from 23.3 m/s to 28.3 m/s. What is the car's mass?
  62. physics

    Show beta cubic=2alpha and galma cubic =3alpha
  63. Physics

    show that, the tangent of the angle of friction is equal to the coeficient of friction.
  64. Physics

    Circuit I-----R-------I I-I--I-----R----I---I-----I I I-------R------I I I I I--------/ I--------------I E=15v All R= 7ohom What is the equivalent resistant of the circuit?
  65. Physics

    If a sound has a wavelength of 3 m, what is its frequency? Use 340 m/s for its speed of sound.
  66. physics

    how will you find relative density of coconut oil with the help of density bottle
  67. Physics

    Hi! Could you help me with this question? imgur(dot)com/lJk2Mfa(dot)png
  68. Physics

    How many capacitor of 4uF capacity each are combined to get total capacity of 6uF
  69. physics

    How is light emitted from incandescent lamps? Fluorescent lamps? Candles?
  70. Physics

    A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below. The velocity of the ball as it leaves the kicker’s foot is 18 m/s at angle of 58◦ above the horizontal. The top of the fence is 10m high. The kicker’s ...
  71. physics-sound

    Explain why your voice seems to sound richer than usual when you sing in the shower?
  72. Physics

    How do I convert 289 kilograms/square meter into grams/square centimeter?
  73. Physics

    Convert 1,953 grams/cubic centimeters into kilograms/cubic meters.
  74. Repost physics

    PLEASE SOMEONE HELP ME!! I POSTED DOWN AT AROUND 10 something!! PLEASE!!! I NEED HELP!!!
  75. physics repost

    sorry! I never noticed..the mass should be 52000kg sorry about that!
  76. physics problem

    why are lightweight tires preferred over lightweight frams in bicycle racing?
  77. physics

    A particle moves with constant speed of 3m/sec along path y=3x^2 What is the acceleration of the particle at x=1.5m?
  78. physics

    If two particles have equal kinetic energies, are their momenta necessarily equal?
  79. physics

    A 50 kg skater pushed by a friend accelerates 5 m/sec. How much force did the friend apply?
  80. physics

    How does air within winter clothing keep you warm on cold winter days?
  81. Physics

    A student drops from a bridge to the water 9.0m below. With what speed does the rock strike the water?
  82. physics

    if a 60-kg woman is riding in a car traveling at 90 km/h is her linear momentum relitive to (a) the ground or (b)the car
  83. physics

    two springs have spring constants of 10.0 N/cm and 15.0 N/cm. which spring is more difficult to stretch?
  84. physics

    what is the final temperature when a 3.0 kg gold bar at 99 degrees is dropped into a .22 kg of water at 25 degrees
  85. Physics

    Can I use P1/P2=(T1/T2)y/y-1 to find the temperature when we pressure liquid refrigerant, for example liquid propane?
  86. please

    someone please help with the physics question i asked a little bit ago, i'm desperate
  87. physics

    if a neutral object lost 2 electrons, what would it's charge be? it would be positive right?
  88. Physics

    The applied force of a 2.0-kg object is 8.4 N [E] and the friction is 2.2 N [W]. What is the motion of the object? Can I use the formula Fnet = ma?
  89. physics

    if it costs 4.5 to 7.5 cents per kilowatt-hour (wind energy) what is the price per kW?
  90. physics

    Can a convex lens be used to magnify an image, "shrink" an image, or both? Explain.
  91. Physics

    X-rays are most similar to which of the following--alpha, beta, or gamma? I think gamma?
  92. Physics

    Do today's nuclear power plants use nuclear fission, fusion, or both?
  93. physics

    show that 1/sqrt(Msubscript 0 Esubscript 0)=C...I don't understand how to show this or what this question is asking..its for wave optics
  94. physics

    constant acceleration or constant velocity which is harder to maintain over a short distance
  95. PHYSICS

    gIVE AN EXAMPL OF WHEN AVERAGE SPEED WOULD BE USED INSTEAD OF INSTANTANEOUS SPEED.
  96. Physics

    If a 2.0-kilogram mass is raised 0.050 meter vertically, the work done on the mass is approximately (1) 0.10 J (2) 0.98 J (3) 9.8 J (4) 40. J
  97. Physics

    How do you find the max height of a projectile given the angle and Vi? Angle = 57.0 degrees Initial V = 46 m/s
  98. Physics

    What are the differences between a motor and a generator? I know they both use electromagnets, but how do they use them differently?
  99. Physics

    for gamma radiation 1rad=1rem, but for alpha radiation 1 rad=20rem. Why is there a difference?
  100. physics

    a book weighs 6 n. when held at rest above your head the net force on the book is?
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