Math/Physics

214,413 results, page 39

  1. physics

    calculate the de-broglie wvelenth of the electron orbitting in the n=2 of hydrogen atom
  2. physics

    Explain the difference between a GET and MOSFET on the basis of their construction and working
  3. Physics

    How much energy is required to ionize hydrogen when it is in the state with n = 6? (answer in eV)
  4. physics

    compute the mass of the following assuming if it to be a sphere of radius 6370km
  5. physics

    state or law which explains why a ship can easily sink than overturn?
  6. Physics/Cars

    Does the mass of the car matter when driving on the road? When skidding?
  7. physics

    How much energy is needed to heat and melt 3.0 kg of copper initially at 83°C
  8. PHYSICS

    Why do objects gain mass while approaching the speed of light
  9. physics

    what is the importance/significance of calculating the magnetic flux density of a solenoid?
  10. physics

    Find the relation between phase difference and path dofferense
  11. physics

    A proton is confined to a nucleus of radius 5 FM.what's the minimum uncertainty in momentum?
  12. physics

    a woman drives at a speed of 70 mph how many miles does she travel in 24 minutes
  13. physics

    Michael, whose mass is 80 kg, runs at a speed of 3 m/s. What is his kinetic energy?
  14. Physics

    When projectile angle is 45°what is the relation between maximum height and range
  15. physics

    Calculate the momentum of a 100 kg object moving with velocity 10m/s
  16. physics

    Calculate the momentum of a 100 kg object moving with velocity 10m/s
  17. Physics

    If a man walks 4 km east and then 5 km south. How far is he from the point where he started?
  18. physics

    Distance travelled by a ball dropped from a cliff in the 10th second.
  19. physics

    how much work is done when 100 kg lifted 5 meters above the ground
  20. physics

    Find the density of the earth if its mass is 6×10^3kg and radius is 6.4×10^3km
  21. Physics

    what must be the net force if a 19.9 kg mass accelerates to the left at a rate of 2.2m/s^2?
  22. Physics

    Find, to 3 decimal place, the frequency of the hour hand of a clock
  23. physics

    How much work is required to lift a 5.2-kg concrete block to a height of 3.1 m?
  24. mathematical physics

    Using Stokes' theorem evaluate ∫c F.dl where F = yi^+ xz^3 j^-z y^3 k^ and C is the circle x^2+ y^2 = 4; z = -3.
  25. physics

    How much heat is necessary to change 345 g of ice at -11°C to water at 20°C?
  26. physics

    How much heat is necessary to change 345 g of ice at -11°C to water at 20°C
  27. Physics

    A 20 kg block is placed on a 35 degree ramp. What is its true metric weight?
  28. physics

    some rocks melt at 1800farenheit. what is the temperature in the celsius scale ?
  29. Physics

    The density of an object is 1500kgm-3, the mass is 10000g find the volume
  30. Physics

    What are some scientific questions that can be asked about projectile motion?
  31. physics

    A gas occupies 20 dm³at 30°c at 2.5 atm find its volume ayt s.t.p.
  32. Physics

    Which of the following is an element? H2O Hydrogen Carbon dioxide A supernova
  33. physics

    A stone is thrown vertically upward at 23 m/s. How fast is it moving when it reaches 14 m?
  34. physics

    Which of the following statements is false regarding the ‘drift’ of charge carriers?
  35. physics

    if r1=2ohms, r2=4ohms, r3=6ohms. Then what is the voltmer reading connected in series
  36. physics

    What is the pressure of the water in pascals at the bottom og a lake which is 5 meters deep?
  37. Physics

    What is the reaction of the earth pulling down on a pen that is lying on a table
  38. physics

    A bicycle starts from rest and reaches 6.0 m/s after 4 seconds. What is its acceleration?
  39. physics

    Does the kinetic energy of a car change more when it speeds up from 10 to 15 m/s or from 15 to 20 m/s? Explain.
  40. physics

    Does the kinetic energy of a car change more when it speeds up from 10 to 15 m/s or from 15 to 20 m/s? Explain.
  41. Physics

    If a force of 15kg. wt acts on a mass of 14 kg, what will be its velocity after 8 seconds?
  42. physics

    how much work is done if a force of 12N moves an object a distance of 5m
  43. Physics

    What is the work done when a force of 30Newtons moves through a distance of 20Meters?
  44. Physics

    if a molecules in a solid has a temp of T = hf/2k then what would be the average energy of vibration
  45. physics

    How does a washing machine's 'spin cycle' expel water from clothes?
  46. physics

    Explain why helicopters need 2 rotors to fly in a straight line.
  47. physics

    ifv=(3i+4j+5k)m/s is the instantaneous velocity of a body mass 1.50kg calculate its K.E
  48. Physics

    What is the period of a wave that travels through a spring at 2.5 m/s and has a wavelength of 1.3 meters?
  49. Physics

    1.A Speed Of A Bullet Of Mass 20g Is 200km/h. What Is The Kinectic Energy.
  50. Physics

    How much force does it take to push an 80 lb. steel cart on wheels?
  51. Physics

    calculate K.E in Joules of a baseball w/ a mass of 237.2 cg moving at 85.00 mph
  52. Physics

    How meny watts need to up the 18kg in 4mtr per 15 second
  53. physics

    What is the effect of increasing the inclination of the track to the acceleration of the rider in the experiment?
  54. Physics

    When a mass is hung from a spring stretches it by 15 cm. What is the period of the oscillations of this system?
  55. physics

    Cylinder water tank 80cms height 1000liters what is its diameter
  56. physics

    If a car has a mass of 400 kg and a velocity of 30 m/s to the east, what is the magnitude of its momentum?
  57. Physics

    Find the centripetal acceleration of a car that rounds an 80 m radius curve at 10 m/s.
  58. PHYSICS

    If that charge is 3.7 μC , by what percentage does the mass of a 31 g comb change during charging?
  59. physics

    What force is needed to accelerate a child on a sled (total mass = 60 kg) at 1.25 m/s2?
  60. Physics

    How much heat is needed to melt 14.3kg of silver that is initially at 44°C?
  61. Physics

    Which of the following wavelengths will produce standing waves on a string that is 1.9 m long? A.1.9 B.3.3 C.3.5 D.95
  62. physics

    a skydiver has amass of 140 kg.at what speed will she have a momentum of 10,000 kg m/s?
  63. physics 1

    what is the peiod of vibrating object which an acceleration of 8.0m/s .when its displacement is 1.0m?what should be the answer?
  64. physics 1

    what is the peiod of vibrating object which an acceleration of 8.0m/s .when its displacement is 1.0m?what should be the answer?
  65. Physics

    A charge q is placed at h distance from the base of centre . Find the flux ?
  66. Physics

    In what part of the electromagnetic spectrum does the wavelength 0.0141 nanometers belong in?
  67. physics

    lighted matchstick brought near the negatively charged electroscope
  68. physics

    Two instances during which the heating effect of current is not required
  69. Physics

    What effect do the following forces have on point? 100N, 30 degrees E of N
  70. physics

    Instances where the heating effect of current is not required. Plssss helllp
  71. physics

    Instances where the heating effect of current is not required. Plssss helllp
  72. Physics

    A car travels at a speed of 70km/h. What distance will it cover in 30 minutes
  73. Physics

    A car travels at a speed of 70km/h. What distance will it cover in 30 minutes
  74. physics

    if a body moves 3m north,then 4m East and finally 6m South.what will be the displacement?
  75. Physics

    Does the speed of sound in air depend on the frequency of the wave? V=[(gamma.RT)/M]^(1/2)
  76. Physics

    A 900 W toaster operates for 2.50 minutes. How much energy does it use?
  77. physics with algebra

    what is the area, and its approximate uncertainty, of a square of side 3.1x10^4 cm?
  78. physics

    A car accelerates from rest at -2.10 m/s2. a. What is the velocity at the end of 4.0 s? b. What is the displacement after 4.0 s?
  79. Physics

    When an object is moving at a normal speed, is it's weight larger than when it's stationary?
  80. Physics

    What’s the specific heat of a material if it takes 6.5 kJ to increase the temperature of a 1.8 kg sample by 6.4 ∘C ?
  81. physics

    Why air pressure in a car tyre increases during driving?
  82. Physics

    Does a ball that is rolled on a floor speed up before slowing down?
  83. Physics

    C:\Users\Kristi\Pictures\Screenshots\Screenshot (691).png
  84. Physics

    When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.6 m/s in 0.11 s .
  85. Physics

    An adventurous aardvark arduously ambles from (3.0, 2.0) m to (−4.0, −2.0) m. What is the displacement in polar coordinates?
  86. Physics

    METEOR SHOWER (Acceleration or Not) PLease choose the correct answer.
  87. Physics

    What’s the deceleration of a juggernaut to stop from 45m/s by constantly decelerating at 9m/s 2(squared) ?
  88. Physics

    Find the displacement in cubic meters of a boat weighing 4710 N.
  89. physics

    An electron experiences an electric force of 0.70 nN . What’s the field strength at its location?
  90. physics

    Athelet meseret defar runs at 10m/s. How long will take her to go?
  91. Physics

    At what temperature, in degrees Celsius, is the speed of sound in air 341 m/s?
  92. Physics

    If ∑ n=0 to inf of 3x^n/n! is a Taylor series that converges to f(x) for all real x, what is the value of f ''(0)?
  93. Physics

    Does angular acceleration on a spinning disk increase centrifugal force?
  94. Physics

    A 2200. Kg vehicle is traveling at 26 m/s what is the force needed to stop it in 21 seconds?
  95. Physics

    An truck with a mass of 3500 kg travels with a velocity of 22.0 m/s. Find the momentum.
  96. physics

    The x-component of an electric field vector E = (200 N/C, 45 deg) is ___N/C.
  97. physics

    the number of waves of wavelength 6000 angstrom in a path of 2 cm in vacuum are
  98. Physics

    Equation y=5 sin(3x-4) determine the freguency,speed,period of waves
  99. physics

    describe how the values of resisitivity determine the uses of material in industry ???
  100. Physics

    Please who can help me out. Derive the coefficient of surface tension for water
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