Math/Physics

215,876 results, page 67
  1. PHYSICS

    Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.
  2. physics-non calc

    a hammer was released from rest vi=0m/s taking 1.12 seconds to fall 1 meter. How do you solve that
  3. Physics II

    find the pressure at the bottom of a vessel 76cm deep when filled with a) water b)mercury (sp.g. 13.6)
  4. grade 11 physics

    what is the index of refraction of a medium in which the speed of this radiation is 2.54X10^8 m/s? I don't even know where to start...
  5. physics

    the mathematical form of the thin-lens equation predicts that a graph of 1/p vs 1/q should have a slope of -1, explain?
  6. physics

    Write the equation for fill factor in terms of V_max, V_oc, J_max, and J_sc. FF =
  7. physics

    A boy sledding down a hill accelerates at 1.30 m/s2. If he started from rest, in what distance would he reach a speed of 8.00 m/s?
  8. Physics

    How does the idea of magnetic fields arising from circulating currents relate to permanent magnets?
  9. Physics

    Determine Centripetal Acceleration acting on the person standing at the equator? (the radius of earth is given)
  10. physics

    A 5.0 m diameter merry-go-round is initially turning with a 4.6 s period. What is the speed of a child on the rim?
  11. physics

    How can the equation be prove:maximum height,time of flight and maximun range in projectile?
  12. physics

    A stone is projected vertically upward with a speed of 20 m/s. a. What is its velocity at the end of 2s? b. What is the height reacted after 2s?
  13. physics

    According to Newton's version of Kepler's third law, how would the ratio T^2/r^3 change if the mass of the Sun were doubled?
  14. physics

    Is the acceleration due to gravity more or less atop Mt. Everest than at sea level? Defend your answer.
  15. Physics

    What net external force is required to give a 30 kg suitcase an acceleration of 2.5 m/s2 to the right? Answer in units of N
  16. physics

    What is the number of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to 1.00×104 ?
  17. physics

    a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay?
  18. physics

    A ball is thrown from a height h and another from 2h.find the ratio of time taken by the two balls to reach the ground.
  19. physics

    five joules of work are needed to shift .5 C of charge from one place to another. the potential differences between the places is
  20. physics/science

    i don't understand why radioactive waste is stored underground is it because it is a harmful substance
  21. College Physics

    How much would you have to raise the temperature of a copper wire (originally at 20 ∘ C) to increase its resistance by 30% ?
  22. Physics

    A ball rolls off the edge of a balcony at 8.0 m/s. Find its speed after 3.8 s in the air. Use g = 10. m/s2 and enter m/s as unit.
  23. physics

    How much centripetal force is needed to keep a 0.20 kg ball on a 1.50 m string moving in a circular path with a speed of 3.0 m/s?
  24. Physics

    find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed
  25. Physics

    If a bullet is shot at velocity of 400 m/s and hits a copper plate, how much heat will be produced?
  26. physics

    a2kg hockey puck is sliding across the frictionless ice at 6m/s.how much force is required to keep it moving at 6m/s
  27. PHYSICS

    a constant force of 6.00N acts on a 3.00kg object for 10.0s. what are the changes in the objects momentum and velocity?
  28. Physics

    find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed
  29. Physics

    An object is thrown vertically upward with a speed of 31.8 m/s. How long does it take to reach this highest altitude?
  30. Language arts

    Einstein was however also publishing papers in physics. How To create this sentence? a.was, however, also b.was however, also c. was, however also d.no error I chose b
  31. Physics

    What are the restrictions on the orbit of a communications satellite if it is to appear motionless in the sky as viewed from any location on earth?
  32. physics

    A ball is thrown from a height h and another from 2h.find the ratio of time taken by the two balls to reach the ground.
  33. physics

    a cyclist moves around equilateral triangle6kn/h10km/h,12km/hfind average speed?
  34. physics

    a 5kg suitcase slides 2m down a frictionless ramp incline at 45 degress. How fast is it going at the bottom?
  35. Physics

    Can anyone help? the resistance of the side lights on an automobile are 10 ohms. How much current flows in them when connected to 12 volts
  36. Physics

    A stone is thrown straight up. To reach a height of 6.49 m above its release point, what must its initial speed be in m/s?
  37. physics

    If you heat a thin circular ring in a oven, does the rings hole get larger or smaller.why?
  38. Physics

    Could someone tell me how to start to solve this? Please How much current flows in a 1000-ohm resistor when 1.5 volts are impressed across it?
  39. physics

    A stone is thrown straight up. To reach a height of 6.74 m above its release point, what must its initial speed be in m/s
  40. Basic Physics

    If a swimming pool has dimensions; 28.2 5m x 10.0m x 2.30m, when it is full of water, what is the force on the bottom ?
  41. physics

    List four effects that can be observed that demonstrate light travels in straight lines. Does anybody know the answer??
  42. physics

    A body is executing of amplitude 1m . Its velocity while passing through mean position is 10m/s . Find its frequency
  43. physics

    3 person are moving triangle place.their velocity are equal. they are follow each other after which time they should meet with each other?
  44. Physics

    Calculate the work required to be done to stop a car of 1500kg moving with a velocity of 60km/hr?
  45. physics

    if the masses remain the same ,but the separation is decreased to one-half of the original distance . what happens to the gravitation force?
  46. Physics

    List the particles that make up an atom. What are their charges? How are they arranged? wHat is the approximate amu of each particle?
  47. physics

    What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 6.8 m/s when going down a slope for 2.5 s?
  48. physics

    A 15 kg box slides across the floor with an initial velocity of +7.6 m/s. It comes to a stop after sliding +14.8 m. How much friction was present?
  49. PHYSICS

    lIST THE PARTICLES THAT MAKE UP AN ATOM. wHAT ARE THEIR CHARGES? hOW ARE THEY ARANGED? wHAT IS THE APPROXIMATE AMU OF EACH PARTICLE?
  50. physics

    A particle is projected from ground in a vetical direction at t=0 sec. at t=0.8 s, it reaches h=14m .It will again come to the same height at ?
  51. physics

    At highway speeds, a particular automobile is capable of an acceleration of about 1.6 m/s2. At this rate, how long does it take to accelerate from 81 km/h to 107 km/h?
  52. Physics

    A student walks from her apartment a distance d=139m to the bus stop at a speed of v1= 1.40m/s.
  53. physics

    a particle starts moving from rest with uniform acceleration . it travels a distance y in the next 2 sec
  54. Physics

    What is the car's forward acceleration,at a speed of 30m/s,when the driving force on the wheels is 650N
  55. Physics

    How much work is done by a girl weighing 450N while carrying a 2kg package up a 2m flight of stairs?
  56. Physics

    If U-238 splits into two even pieces, and each piece emits an alpha particle, what elements are produced?
  57. Physics

    How long will it take a 1080 W motor to lift a 330kg piano to a sixth-story window 16.0m above?
  58. Physics

    Initial velocity is 21 m/s, the angle is 40 degrees, 20 meters away from the wall. How long is the ball in the air for?
  59. Physics

    700 kg plane is traveling at 90 m/s at altitude of 1500 m what is planes total mechanical energy
  60. physics

    when two lenses of focal length +10cm and -5cm are placed in contact then find the net power ?
  61. Physical Science

    What are the noninvasive benefits of the medical technologies that rely on physics of elementary particles?
  62. physics

    at time t=0 the driver starts to brae determine how long the bus takes to stop
  63. Physics

    In general, what conditions with observable effects make magnets interact with non-magnet materials?
  64. Physics

    A boy sledding down a hill accelerates at 1.65 m/s2. If he started from rest, in what distance would he reach a speed of 7.30 m/s?
  65. Physics

    An elevator is moving upward at 1.03 m/s when it experiences an acceleration 0.31 m/s2 downward, over a distance of 0.73 m. What will its final velocity be?
  66. physics

    What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 7.9 m/s when going down a slope for 7.4 s?
  67. Physics

    If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2?
  68. Physics

    1. Could a horizontal axis of rotation be used satisfactorily in an experiment uniform circular motion? Explain
  69. physics

    What is the free-fall acceleration in a location where the period of a 2.87 m long pendulum is 3.4 s? Answer in units of m/s 2
  70. PHYSICS

    A Carnot type engine has a reservoir of 1000 K with an efficiency of 50%. Find the temperature of the sink.
  71. Physics

    The position of some object moving along the x-axis is observed to be x(t)=9cos(pi*t/3+pi/4) meters. Find the frequency.
  72. Physics

    How long will it take a 1080 W motor to lift a 330kg piano to a sixth-story window 16.0m above?
  73. Physics

    When you swim across a river does the time it takes to get to the other side depend on the rate of flow of the water?
  74. physics

    Find the force when two poles to strength 100 and 90 cgs units are placed at a distance to 20 cm a part.
  75. Physics

    How can you easily increase the magnetic field strength inside a current-carrying coil? Could someone help?
  76. physics

    A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water. True or False
  77. physics

    A spring has k = 88 N/m. Use a graph to determine the work needed to stretch it from x = 3.6 cm to x = 5.6 cm, where x is the displacement from its unstretched length.
  78. physics

    a baseball is thrown horizontally at a velocity of 35 m/s from a height of 1.5 m. How long does it take to hit the ground? how far does it travel?
  79. Physics

    A boy sledding down a hill accelerates at 1.55 m/s2. If he started from rest, in what distance would he reach a speed of 6.90 m/s?
  80. physics

    show the expression v=at is dimensionally correct where v represents speed an acceleration and t is instant time?
  81. physics

    in einstein's famous equation e=mc^2, describing the relationship between matter and energy, the units for E are m=====>kg, c=====>m/s a) kg m/s b)kg m/s^2 c) m^2/s^2 d)kg m^2/s^2 I think its either B or D but indecisive...
  82. physics

    you are to determine the amount of sugar dissolved in solution. how can you use polaroid filters to complete the task?
  83. Physics

    I have a 1000 ohm resistor with a measured resistance of .967 how do I use submultiples or mutliples to get it in the SI units?
  84. physics

    It two objects are thrown off a tall building and one is three times the mass of the other, do they hit the ground at the same time?
  85. physics

    If I threw a ball vertically at an initial speed of 34.5 m/s, how many seconds would it take to reach its maximum height?
  86. physics

    Determine the net force needed to cause a 1310kg sports car to accelerate from 0 - 28.6m/s[fwd] in 5.6 s
  87. physics

    what is the acceleration due to gravity at a distance of 2 earth radii abouve earths surface?
  88. PHYSICS ASAP!

    A Football is kicked 66.6 meters in 5.39 seconds. What was the initial velocity? Magnitude and Direction
  89. Physics

    What is the difference between 110, 220 and 440 volts. How does amperage play a role with voltage
  90. college physics

    an automobile traveling at 25.0 km/h along straight,level road accelerates to 65.0 km/h in 6.00s what is the acceleration
  91. physics

    an elevator weighing400kg is to be lifted up at a constant velocity of 3cms-1 what would be the minimum power of motor to be used
  92. PREAP Physics

    From what height would a compact car have to be dropped to have the same kinetic energy that it has when being driven at 100 km/hr?
  93. physics

    five joules of work are needed to shift .5 c of charge from one place to another. the potential differences between the places is
  94. Physics

    Express the angular velocity of 36 rpm (revolutions per minute) in units of radians per second (rad/s).
  95. Physics

    You swing a 2.40kg stone in a circle, using the full length of a thin 60.0cm rope.
  96. Physics

    If 2.4 m3 of a gas initially at STP is compressed to 1.6 m3 and its temperature raised to 30oC, what is the final pressure?
  97. physics

    For an object in equilibrium the sum of the torques acting on it vanishes only if each torque is calculated based on your:
  98. physics

    waves in a lake are observed to be 5 cm in length and to pass an anchored boat .8 s apart. the speed of the wave is
  99. physics

    what is the magnitude and direction of the electric field 20.0 cm directly above an isolated 33.010 neg6 C charge?
  100. Calculus

    no one on physics forums seems to know the answer so I was wondering if you guys could help post anser on these forms of course if you can help my question is here h t t p : / / w w w . p h y s i c s f o r u m s . c o m / s h o w t h r e a d . p h p ? t =