Math/Physics

214,567 results, page 31

  1. Physics

    what is the accuracy percent of 11 divided by 267 times 100?
  2. physics

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

    What is the speed of a proton whose kinetic energy is 12.9 keV?
  4. physics

    How do I find the magnitude from this data: theta_1 = 44.9 theta_2 = 146.1 A = 4.8 cm B = 8.7 cm
  5. physics

    What is the rms value of the sinusoid s(t)=Asin(2πf0t)
  6. physics

    A 31-m/s velocity vector that makes an angle of 44° counterclockwise from the -x direction. x: y:
  7. physics

    7/8 part of a substance decays in 45 days what is its half life
  8. Physics

    Can you please help with the following: x^2+2x-35=0 I can't remember how to get the different possibilities. Appreciate help, thanks
  9. Physics

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

    What is the momentum of a 52-kg carton that slides at 5.0m/s across an icy surface?
  11. physics

    What is the momentum of a 42-kg carton that slides at 3.6m/s across an icy surface?
  12. Physics

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

    What is the momentum of a 52 kg carton that slides at 5.0m/s across an icy surface?
  14. Physics

    Why is using mirrors to generate electricity not a common practice?
  15. physics

    Explain why voltage is constant when connecting resistance in series
  16. physics

    Explain why voltage doesn't change when connecting resistance in series
  17. atomic physics

    What wavelenght of radiation is necessary to ionize hydrogen.
  18. atomic physics

    What's the difference between excited and unexcited hydrogen?
  19. physics

    a 4kg bird is flying with a velocity of 4m/s2. what is the kinetic energy?
  20. physics

    how many Btu of heat are required to melt 8.35 lb of ice at 32 degrees F
  21. Physics

    A mass accelerates uniformly when the resultant force acting on it is......?
  22. Physics

    could you explain friction in a very easy term please
  23. Physics

    What is the mass (in Grams) of a block of aluminum that has a volume of 385 mL
  24. physics

    The equation for distance is d = st. How far does a car go in 10 seconds at a speed of 44 m/s?
  25. physics

    What is the kinetic energy of a 19 kg dog that is running at a speed of 7.7 m/s (about 17 mi/h)?
  26. physics

    What is the minimum speed required to simulate artificial gravity?
  27. general physics

    what are the differences between polygon and parallelogram method?
  28. PHYSICS

    HOW CAN YOU TELL WETHER 2 CHARGES HAVE THE SAME MAGNITUDE
  29. PHYSICS

    T.E of e in excited state is E . WHAT IS KINETIC ENERGY with proper sign
  30. Physics

    Two charge 10C and 5C but no radius. How can I determine Force?
  31. PHYSICS

    what would tension 1 be if W1=15N ,W2=20N and W3=150N, and Muse of k = 0.65?
  32. physics

    what would tension 1 be if W1=15N ,W2=20N and W3=150N, and Muse of k = 0.65?
  33. physics

    What is a charge dipole a basic model of? would it be a magnet?
  34. PHYSICS

    determine the speed of a 2.0g insect that has kinetic energy of 0.020 J.
  35. physics

    Using dimensions, show that 1 joule=107 sq erg.
  36. physics

    What's the net force acting on an 18-kg object if an acceleration of 3.0 m/s2 is produced? A. 54 N B. 12 N C. 6 N D. 36 N
  37. physics

    Q. 2. A force of 100N acts on a mass of 25 kg for 5 s .What velocity does it generate?
  38. physics

    How long will it take a cat to run 8.2m [N] at an average velocity of 3.7m/s [N]
  39. Physics

    A bike wheels rotate 4 revolutions. How radiant has it rotates?
  40. physics

    how far will you travel if you maintain a speed of 100m/s for 30s?
  41. Physics

    What is the rate of deceleration of a 1400-kg SUV that is going 75.0 km/h and then slows to 25.0 km/h in 8.20 s?
  42. Physics

    A force of 10 N pushing down on a 2m^2 block will produce a pressure of?
  43. Physics

    What does it mean to have a 99.1% experimental uncertainty or percent deviation
  44. physics

    Full explanation of transverse wave with sutable example
  45. physics

    the formula of centripital accelaration is v>2/r Q:Why here is square of speed ?
  46. physics

    Find the displacement of the car after 5.9 s. Answer in units of m
  47. Physics

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

    What is the wavelength in metres of an electromagnetic wave with a frequency of 10^14/s?
  49. physics

    44 foot skid from a jeep cherokee, how fast was it traveling.
  50. physics

    the input to a 93.33 efficient belt drive system is 75 kw. what is the output ?
  51. physics

    with what speed does a hammer dropped from a height of 23 m strike the ground?
  52. physics

    a force of 20 n acts on a 5 kg block. calculate the acceleration of the object.
  53. Physics

    What air temperature will feel four times as warm as 0 °F?
  54. physics

    How does a “pop bottle” rocket use the principles of motion
  55. physics

    explain the terms uniform acceleration and average speed.
  56. Physics

    how much work is done to drag a 25kg sled 80m?
  57. physics

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

    find the resultant force 10N and 20N acting at 30¡ã
  59. physics

    calculate the work done in lifting a 300 N weight to a height of 10 m.
  60. physics

    isolate for t s = ut + 1/2at^2 please show all ur steps  
  61. Physics

    The volume of a block of lead that has a mass of 33.6g would have to be?
  62. physics

    what will be the young's modulus of copper wire pf length 0.15 m and radius 0.2 cm
  63. Physics

    Which best explains why openness is important to the progress of science?
  64. Physics

    How far does water travel if you restrict the hose opening by 80%
  65. physics

    Why the blood pressre in human greater at the feet than in the brain?
  66. physics

    How many joules of energy are required to melt 80g of silver.
  67. physics

    What is the acceleration (in m/s^2) of a vehicle that changes its velocity from 85 km/h to a dead stop in 13 s?
  68. Physics

    The ratio of velocities of sound in hydrogen and oxygen at stp is???
  69. Physics

    what is the northwest and eastward components of a 550 kph velocity?
  70. physics

    a plane travelling at 200.0m/s braked to a stop in 6.2s. what was its acceleration?
  71. Physics

    What is the change in velocity (in m/s) if an impulse of 225 N acts on a 4.5 kg mass for 3.0 s?
  72. PHYSICS

    Why are cars made with bumpers that can be pushed in during a crash?
  73. physics

    Vector B~ has x, y, and z components of 9.6, 6, and 8.5 units, respectively. Calculate the magnitude of B~ .
  74. physics

    what is the pressure on the bottom of an aquarium 0.3 m deep filled with water
  75. physics

    Calculate the energy absorbed when 8.5g of ice is melted at 0 celsius
  76. Physics

    What effect does the normal force have on the coefficients of friction?
  77. PHYSICS

    Write down the ORDER OF MAGNITUDE for the numbers given: a)4.72*10^-7 b)8.65*10^4 C)7.59*10^-5
  78. Physics I

    What is the torque produced by a force of 40N j applied at the point 2 m i - 5 m j + 3 m k?
  79. physics

    what do you think will happen if a blackhole and a whitehole are close to each other
  80. Physics

    If 7.20 kg of ice at -5.00°C is added to 12.0 kg of water at 30°C, compute the final temperature.
  81. Physics

    Three vectors A,B and C have the following x and y components Ax = 3.6, Ay=-3.4; Bx=-5.5, By=1.9; Cx=2.5, Cy=3.4 What is the magnitude of A+B+C?
  82. Physics

    Find the pressure at the bottom of a swimming pool that is 1.1 m deep.
  83. physics

    what is the acceleration of a car going 25m/s on a cloverleaf with a radius of 45 m?
  84. physics

    Calculate the Specific Gravity of an object that sinks in water if m = 21.97 g and mA = 17.40 g.
  85. Physics

    If I use 1.013x10^5 instead of given 101kpa....is it wrong?
  86. Physics

    Why we have to know refractive index and can use this in normal life?
  87. Physics 1st

    What will be apparent length of a rod 1m long moving with 0.7c
  88. physics

    At a distance of 2.0 m. from a +8.0 x 10^-6 C charge, the magnitude and direction of the electric field will be?
  89. Physics

    is electric field intensity the same as potential difference?
  90. Physics

    Show that the function y(x,t) = X^2+V^2t^2 is a solution of the general wave equation.
  91. PHYSICS

    Do the mass of a body determine the gravity they possess(sun)
  92. physics

    find a unit vector parallel to the resultant of vectors : A=2i^+j^-k^& B=3i^-2j^+2k^
  93. Physics

    Why are electrons allowed to fall on a crystal plate for diffraction ?
  94. Physics 30

    The circuit has two resistors? V= 22V R= 27 Komega R=? I= 12mA
  95. physics

    three resistors are connected in parallel R1=10, R2=50, R3=25.what is the equivalent resistance
  96. physics

    An astronaut has a mass of 60kg.what is her weight here on earth
  97. physics

    a car starts from rest and accelerates at 6m/s^2.how far does it travel in 3s?
  98. physics

    How does a vaccum flask minimize heat change with surrounding
  99. Physics

    An electric field with constant magnitude and direction is said to be?
  100. physics

    What are the charges on and the potential difference across each capacitor in the figure if V = 13.2 V?
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