Math/Physics

215,554 results, page 92
  1. physics

    How does the width of the central region of a single-slit diffraction pattern change as the wavelength of the light increases? Look at the formula on this.
  2. physics

    determine the acceleration for a jet taking off on a run way as it starts from rest and reaches a velocity of 50m/s over a period of 10s
  3. Physics

    A crane lifts a Load of 50000g very slowly through a distance of 150cm vertically, calculate the work done against gravity if g=10.mls2
  4. physics

    (Conservation of Linear Momentum)How do you find the kinetic energy lost during a collision when you already have both the masses and both the initial and final velocities?
  5. Basic Physics

    A shoe flung into the air such that at the end of 2.0 m/s it is at its maximum height moving at 6.0 m/s. How far away will it be from the thrower when it returns to the launch altitude.
  6. physics

    calculate the net charge on a substance consisting of a combination of 2.6e13 protons and 6.0e13 electrons. answer in units of C.
  7. Physics

    Using the definition of the scalar product, find the angles between the following pairs of vectors. A = - 4 i + 2 j + 2 k and B = - 3 j - 3 k I understand to do [(A).(B)]/|A|*|B| = cos theta; but I'm getting 0 for |A| and don't know how to access it from
  8. physics

    During a workout, a person repeatedly lifts a 13 lb barbell through a distance of 1.5 ft. How many "reps" of this lift are required to burn off 100 Cal?
  9. Physics

    Ajuggler throws a ball from height of 0.950 m with an overall velocity of =4.25 m/s, 67 degrees above horizontal and misses it on the way down. What is the overall speed when it hits the ground?
  10. physics

    The brakes on your automobile are capable of creating acceleration of 14 ft/s2. If you are going 66 mi/hr and suddenly see a state trooper, what is the minimum time required to get your car to 55 mi/hr?
  11. physics

    Two sinusoidal waves of the same frequency travel in the same direction along a string. If ym1 = 4.2 cm, ym2 = 5.9 cm, ö1 = 0, and ö2 = /5 rad, what is the amplitude (in cm) of the resultant wave?
  12. physics

    How far to the nearest tenth of a meter can a runner running at 10 m/s run in the time it takes a rock to fall from rest 99 meters?
  13. Physics

    A 3,000 kg truck is traveling 28 m/s through a rainstorm. At the end of its journey, it has collected 500 kg of water and is now moving 24 m/s. Was momentum conserved?
  14. 11 grade / physics

    a body reaches the max height of 80m when projected at the angle of 30degree find the horizontal component
  15. Physics

    Carbon dioxide forms into a solid (dry ice) at approximately -157°F. What temperature in degrees Celsius does this correspond to?
  16. physics

    A ball is thrown upward from a platform 4.5 m high with a speed of 17 m/s at an angle of 41 o from the horizontal. What is the magnitude of its velocity when it hits the ground?
  17. physics

    Calculate the gauge pressure inside a soap bubble 0.0002m in radius using the surface tension for soapy water
  18. Physics

    A plane has an airspeed of 200 m/s due north and is subject to a westerly wind of 50 m/s. What is the planes speed relative to the ground?
  19. physics

    A young boy swings a yo-yo horizontally above his head so that the yo-yo has a centripetal acceleration of 275 m/s2. If the yo-yo's string is 0.55 m long, what is the yo-yo's tangential speed?
  20. physics

    An ox exerts a force of 7100N to the horizontal direction without slipping. If the ox has a weight of 8000N, what is the minimum coefficient of static friction?
  21. physics

    A rock, mass = 2.0 kg, is fired straight up at 60 m/s from a catapult. What will be its maximum height at the moment it stops going up and starts to come down? Use the magnitude of g to be -10m/s2.
  22. physics

    A block of wood is 8.00cm long, 20.0cm high, and 0.10m wide. its mass is 1.00kg. what is its density in g/cm3?
  23. Physics

    What is the net force acting on the ring in the diagram?
  24. physics

    Hm0 dug b00b pass taik pay 0ff.blue medcare x x1234567.sead h0sp
  25. physics

    A ball thrown straight up takes 5.80 seconds to go up and come back down to its starting point. Neglecting air resistance, how high (in m) does it go?
  26. physics

    What will be the equilibrium temperature when a 273 g block of copper at 298°C is placed in a 132 g aluminum calorimeter cup containing 815 g of water at 11.4°C?
  27. physics

    The edges of a shoebox are measured to be 11.9 cm, 17.3 cm, and 29 cm. Determine the volume of the box retaining the proper number of significant figures in your answer.
  28. physics

    a person whos mass is 102 kg stands on a beam supported by two ropes , A and B, he is standing on one foot to help you solve this problem.
  29. physics

    a car traveling initially at +7.0 m/s accelerates uniformly at the rate of +0.80m/s2 for a distance of 245 m. what is its velocity at the end of the acceleration?
  30. Physics

    Some neodymiun-glass lasers can provide 100 TW of power in 1.0 ns pulses at a wavelength of 0.26 um. How much energy is contained in a single pulse?
  31. Physics

    A 5.8 kg object is accelerated from rest to a speed of 53.3 m/s in 55 s. What average force was exerted on the ob- ject during this period of acceleration? Answer in units of N.
  32. physics

    A 2.6-kg particle moving along the x axis has a velocity of +1.7 m/s as it passes through the origin. It is subjected to a single force, Fx, that varies with position, as shown below.
  33. physics

    An electric guitar’s amplifier is at a distance of 4.6 m. Find the intensity of its sound waves when its power output is 0.18 W. Answer in units of W/m2
  34. Physics

    A 5.0cm tall object is placed 16cm from a convex lens with a focal length of 8.4cm. What are the image height and orientation?
  35. physics

    Determine how much water would be present in a 10 tonne sample of lignite, has a moisture content of 65%, before crushing and drying. 10 tonnes is 10,000 kg.
  36. Physics, Class XI

    If a force of 15 kg. weight acts on a mass of 14 kg, what will be its velocity after 8 seconds? What is the process to apply the formulas in this question? Please help me fast!
  37. physics

    A snowboarder of mass 71.8 kg (including gear and clothing), starting with a speed of 4.8 m/s, slides down a slope at an angle θ = 37.1° with the horizontal.
  38. Physics

    how far to the nearest tenth of a meter can a runner running at 7.9 m/s run in the time it takes a rock to fall from rest 65 meters?
  39. physics

    The brakes of a car traveling at 16 m/s can decelerate it until it stops after 10m. Find (a) its negative acceleration, and (b) the time requires to stop
  40. physics

    whaat happens to the potential energy lost by hammer of pile driver when it falls through a distance and drives a piling into the ground?
  41. physics

    Two forces F1 and F2 ifF1is double that ofF2 and the resultant is perpendicular on F1 then the angle betwee them is Expain ans with reason and diagram
  42. physics

    You want to design a curve, with a radius of curvature of 35.0 m, so that a car can turn at a velocity of 15 m/s on it without depending on friction. At what angle must the road be banked?
  43. physics

    Suppose electrons enter a uniform electric field midway between two plates at an angle ¦È0 to the horizontal, as shown in the figure
  44. Physics

    What will happen to the time of collision if you add weight to a cart but keeps its speed the same and send it rolling down a incline towards a force sensor?
  45. physics

    When 1.60 multiplied by 105 J of heat enters a cherry pie initially at 20.0°C, its entropy increases by 470 J/K. What is its final temperature (C)?
  46. physics

    What will be the equilibrium temperature when a 245-g block of copper at 285„aC is placed in a 145-g aluminum calorimeter cup containing 825g of water at 12.0„aC?
  47. physics

    please HELP!!! What is the magnitude of the momentum of a baseball (m = 1.450 kg) traveling at a speed of 102 mi/h? Express your answer in SI units. I am unsure where to start
  48. Physics

    1. A 2,000 kilogram truck traveling at 60km/h strikes a tree and stops in 0.75 seconds. How large is the force that causes this to occur?
  49. Physics

    An auto race is held on a circular track. A car completes one lap in a time of 19.2 s, with an average tangential speed of 39.8 m/s
  50. physics

    How much work must be done to roll a metal safe, mass 116 kg, a distance of 15.0 m across a level floor? The coeffecient of friction is 0.050.
  51. Maths/Physics

    Is it possible to share a four fingered Kit Kat equally between 5 people if you can only break any one piece in half? Prove whether it is possible or impossible.
  52. Physics

    Eighty calories must be added to one gram of ice at 0ºC to melt it. What is the approximate mechanical equivalent of this amount of energy?
  53. physics

    Explain why it would not make sense to use a full-size glass thermometer to measure the temperature of a thimbleful of hot water?
  54. gen physics II

    If a doubly-ionized oxygen atom (O–2) is accelerated from rest by going through a potential difference of 20 V, what will be the change in its kinetic energy?
  55. physics urgent please

    Give an example of projectile motion;include in your explantion the term "velocity" , "accleration" and "displacement", orginality in your example will be appreciated?
  56. science(physics)

    give an example of projectile motion;include in your explantion the term velocity , accleration and displacement orginality in your example will be appreciated?
  57. Science (Physics)

    Two 1.5 kg balls move away from each other, one traveling 9 m/s to the right, the other 2 m/s to the left. What is the magnitude of the total momen- tum of the system? Answer in units of kg · m/s
  58. Physics

    What would our seasons be like if the rotation of the Earth's was aligned with the plane of the ecliptic so that the north pole pointed directly at the Sun once per year.
  59. physics

    A particle is drop from a vertical height (h) and falls freely for a time(t) with the aid of a sketch explain how (h) varies with (I) t (ii) t square
  60. Physics

    Which electromagnetic radiation can be used in space to detect low temperatures? Gamma Rays Infra Red Ultra Violet Or any of the others?
  61. physics

    A 25000 kg rock is located at a distance of 7.6 x 108 m away from a small planet of mass 7.8 x 1023 kg. What is the mutual force of attraction between these two
  62. physics

    brakes are applied in bringing in a 1200-kg car moving at 25 m/s to rest in 20.0 s. show that the amount of braking force is 1500n.
  63. physics please help!

    Find the velocity (in m/s) of a free-falling object released from rest after it has fallen 100m. I don't understand the formulas to use or anything. please help.
  64. Physics

    "Determine the restoring force of a pendulum that is pulled to an angle of 12.0 degrees left of the vertical. The mass of the bob is 300.0g."
  65. pre ap physics

    what is the force excerted on the surface of a bowling ball that has a diameter of 32cm immersed in water to a depth of 555m?
  66. physics

    A golf ball is hit with an initial velocity of 50 m/s at an angle of 45 degrees with the horizontal. How far will it travel horizontally before it hits the ground?
  67. physics

    A 3kg basketball is dropped from the top of a 120m building. if all of the energy is converted into KE, what is the velocity of the ball just before it hits the ground
  68. science/physics

    just trying to find out what temperature the water in my celcius heating system needs to be to achieve an air tempature of 68 degrees ferinheidt
  69. physics/electrical circuits

    two identival 3v, 1 ohm batteries are connected in parallel with like polarity to like. the norton equivalent circuit of this combination is?
  70. physics

    A battery of emf and negligible internal resistance is connected to two resistances R1 and R2 in series. What is the potential difference across R2?(a)E(R1+R2)/R2(b)E(R1+R2)/R1(c)ER2/R1+R2(d)ER1/R1+R2
  71. Physics 1

    What is the minimum speed that a roller coaster must have so that the people do not fall out at the top of the circle in an upside down loop? Take the radius to be 8 meters.
  72. Physics

    Why "weighing" individual atoms is a particular challenge? Using A small beam arranged as a cantilever, can be utilized as part of a sensing device.
  73. Physics

    A ball is thrown at 21m/s at 30degree above the horizontal from the top of a roof 16m high.calculate the time of flight
  74. physics

    Two small metal spheres with masses 2.0 and 4.0 are tied together by a 5.4--long massless string and are at rest on a frictionless surface. Each is charged to +2.4 .
  75. Physics

    What is common to all light sources, including incandescent, fluorescent, neon, halogen, laser, and sodium vapor devices?
  76. physics

    How far to the nearest tenth of a meter can a runner running at 10 m/s run in the time it takes a rock to fall from rest 91 meters
  77. Physics

    If a disk and hoop are released simutaneously 1.0m above the ground at a 30 degree incline which one will reach the bottom faster? Show mathematically.
  78. Physics

    What is the magnitude of the force per meter of length on a straight wire carrying an 8.50 -A current when perpendicular to a 0.55 -T uniform magnetic field?
  79. Physics

    Forces of 10.6 N north, 20.8 N east, and 14.3 N south are simultaneously applied to a 3.76 kg mass as it rests on an air table. What is the magnitude of its acceleration?
  80. Physics

    A projectile is fired straight up at a speed of 16 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 . Answer in units of s.
  81. physics

    Mass mA rests on a smooth horizontal surface, mB hangs vertically.If m_{\rm{A}}=13.0 kg and m_{\rm{B}}=3.0 kg in the figure , determine the magnitude of the acceleration of each block.
  82. Physics

    A racing car has a mass of 1540 kg. What is its kinetic energy if it has a speed of 110 km/h? Assume that air resistance is negligible.
  83. Physics

    A 250kg car initially at rest was travelling with acceleration of 10m/s square. Calculate the kinetic energy after 3 seconds
  84. physics

    a man raises a mass,m to a height ,h and then shifts it horizontally over a distance ,x. find the total work done against the force of gravity?
  85. Physics

    A 3.0 kg block slides down a 4.5 m ramp of angle 30 degrees and collides inelastically with a 4.5 kg bolck at rest. Calculate the velocity after the collision.
  86. Physics

    A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak.
  87. physics

    a 35.5kg box slides down an incline plane with a 25 degree angle at a constant rate. how do i calculate the coefficient of friction
  88. Physics

    When a compact disk with a 12.0-cm diameter is rotating at 4.2 rad/s, what is (a) the linear speed and (b) the centripetal acceleration of a point on its outer rim?
  89. Physics

    A sample of charcoal from an archaeological site contains 55 g of carbon and decays at a rate of .877 Bq. How old is it? ok I am totally lost, I don't know where to start
  90. Physics

    Calculate the work required to pull a wagon along a horizontal road for 4.0x10^2 m at a constant speed of 3.0 m/s if the force of friction is 8.0 N.
  91. physics

    What constant horizontal force, acting over 16 m of level trail, gives a friction-free 51-kg skier, starting from rest, a speed of 5.7 m/s?
  92. physics

    If the coefficient of kinetic friction is 0.25 , how much horizontal force is needed to pull each of the following masses along a rough desk at a constant speed? A) 25 kg
  93. Physics

    Determine the moment of inertia for three children weighing 64.0 lb, 44.0 lb and 83 lb sitting at different points on the edge of a rotating merry-go-round, which has a radius of 12 ft.
  94. Physics

    A dense plastic toy of mass 1.8 kg is floating just beneath the surface of a pond. What is the buoyant force on it? Answer in units of N.
  95. physics

    How much work did the movers do (horizontally) pushing a 180- crate 10.6 across a rough floor without acceleration, if the effective coefficient of friction was 0.50?
  96. Physics

    An object of mass 20kg slides down an inclined plane at an angle of 30 degree to the horizontal. The coefficient of static friction is?
  97. Physics

    Forces of 10.6 N north, 20.8 N east, and 14.3 N south are simultaneously applied to a 3.76 kg mass as it rests on an air table. What is the magnitude of its acceleration?
  98. Physics

    If a satellite is orbitting the earth 710km above the earths surface, and it's velocity is 7,406.8 meters/sec, what is it's cetripedal acceleration??
  99. physics

    Question part Points Submissions 1 0/1 1/5 Total 0/1 ...If a truck traveling 38.0 km/h uniformly accelerates up to 55.0 km/h, what's its average speed in the process?
  100. Physics

    For adults, the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day should a 73.0kg adult receive?