215,876 results, page 59
  1. physics

    what is the mass of a vehicle traveling at 25 km/hr with a kinetic energy equal to 1 x 10 to the 4th power J?
  2. physics

    how do we calculate the height of a falling ball with a mass of 0.5kg and a velocity of 10m/s.
  3. Physics

    A projectile is shot straight up from the earth's surface at a speed of 1.20 x 104 km/hr. How high does it go?
  4. physics

    A tank has a length of 0.18 m, a width of 0.78 m, and a height of 0.44 m. If it is filled with water, how many kilograms does it weigh?
  5. physics

    An arc lamp operates at 80V . suggest a method to use it with 240 V d.c. source
  6. Physics

    A 68.5kg man is standing still on an elevator that isn't moving, what is the normal force on him?
  7. physics

    A 2.40- bullet embeds itself in a 1.20- block, which is attached to a spring of force constant 770 .
  8. physics

    the value of acceleration due to gravity is not equal to 10m,give reasons to support
  9. Physics

    .17 kg hockey puck initial velocity 21 m/s stops 62m away. what is coefficient of friction?
  10. physics

    the height of the mercury in the glass tube thermometer when in melting ice and then steam are 3 cm and 18 cm respectively
  11. physics

    A 55 kg swimmer crosses a 100 m pool in 12 s. If she moves with a constant velocity, what is her momentum?
  12. physics

    how would you measure the resistance of an electrical device, such as a lamp, by the voltmeter-ammeter method?
  13. Physics honors

    If a racer runs at an average speed of 7m/a how far will she run in 1 min 45 seconds?
  14. Physics

    A standing wave has wavenumber 200 rad/m. What is the distance between two adjacent nodes.
  15. Physics

    Aircraft with acceration of magnitude of 42.5 m/s. If starting from rest how long will it take to travel a 2.6 km runway?
  16. physics

    a train starts from rest ad at the end of 90° seconds has a speed of 10km/h. What is the acceleration?
  17. Physics

    The index of refraction of water is 1.33. What would be the speed of a light wave passing through at this medium? 4 x 10^8 m/s 2.3 x 10^8 m/s 4.4 x 10^-9 m/s 2.6 x 10-^9 m/s
  18. Physics

    The index of refraction of water is 1.33. What would be the speed of a light wave passing through at this medium? 4 x 10^8 m/s 2.3 x 10^8 m/s 4.4 x 10^-9 m/s 2.6 x 10-^9 m/s
  19. Quick Physics Question

    Are both linear and angular momentum conserved in static equilibrium ?
  20. Physics

    Calculate the momentum of a bullet moving with a velocity of 1000m/s ,if it has a mass of 0.01kg
  21. Physics

    Two charges +1C and -1C are placed at distance 1m apart ,each having masses 2kg respectively are released.what is the type of collision they experience?
  22. physics

    --------------------------------------- A rugby player of mass 82kg is running at 6.0m/s. How much energy will be needed to stop him? ---------------------------------------
  23. Physics

    A rubber ball of mass 0.12kg is held at a height of 2.5m above the ground, and then released.
  24. physics

    If motion of a particle of mass (m) is given by y=ut+1/2gt^2 (square).find force acting on it
  25. Physics

    If 2.0 J of work is done in raising a 280g apple, how far is it lifted? I would say F= 2.0/180 but that doesn't really sound right...
  26. Physics

    If the cosmic microwave background radiation (CMBR) is at a temperature of 2.7K, what is its peak wavelength?
  27. Physics

    How close would the masses 0.545 kg and 0.109 kg have to be in order for the gravitational force between them to have a magnitude of 1.03 N? Please Help!
  28. physics

    what is the initial velocity (Vyo) of a projectile launched horizontally? why? i know that it is 0 m/s, but i don't know why/how to explain it.
  29. physics

    A stone is dropped from a 100m bridge. How long does it take the rock to reach the ground?
  30. Physics

    At what temperature is the rms speed of helium molecules half its value at STP (0 C}, 1.0 atm)?
  31. physics

    three point charges-1*10^-6,-2*10^-6,3*10^ kept at corners of an equilateral triangle of side 1m.what is potential at centre
  32. physics

    What percentage of the takeoff velocity did the plane gain when it reached the midpoint of the runway?
  33. physics

    a 0.03 mol sample of helium is taken through a cycle. the temperature of state A is 400K. calculate V.
  34. Physics

    A car accelerates from 12m/s to 25m/s in 6.0s. What is its uniform acceleration? How far did it travel in this time?

    At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.40%?
  36. physics

    Find the electric flux through each surface. (Use any variable or symbol stated above along with the following as necessary: ε0.)
  37. physics

    How center mass affects an arrows distance traveled (include source)
  38. physics

    An 80 kg man on a 10 kg stretcher is being pulled upward with constant speed. What is the tension on the rope ?
  39. Physics "scientists"

    * JJ Thomson * a) How does his experiment of cathode ray tube relates to electrostatics? >> PLEASE HELP ME!! :( :)
  40. physics

    A car traveling at +7.2 m/s accelerates at the rate of 0.65 m/s 2 for an interval of 2.4 s. Find vf . Answer in units of m/s
  41. Physics

    Charges q1 and q2 lie on x axis at points x= -a and x= 5, respectively. (a) how must q1 and q2 be related for the net force on charge +Q at x = a/2 to be zero ? (b) and if +Q is placed at x = 3a/2.
  42. Physics

    The body mass is 0.4kg , its hung on a spring with stiffness of 90 N/m What is the frequency of its oscillation?
  43. physics

    why we cannot use visible light for studying the crystal structure using Bragg’s diffraction method?
  44. physics

    A ball was thrown straight up at 20.7 m/s then caught at the same place it was released. How many seconds was it in the air?
  45. Physics

    How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.0 ìC?
  46. physics

    what is the temperature increase of 6.4 kg of water when it is heated by a 7.7*10 square? (cp=4186j/kg*degrees celsius)
  47. Physics

    The distance between any two points in a thermometer is 10cm.mercury level is 13 cm .temperature in Celsius?
  48. Physics

    The body mass is 0.4kg , its hung on a spring with stiffness of 90 N/m What is the frequency of its oscillation?
  49. physics

    Two 2.5 kg physical science textbooks on a bookshelf are 0.25 m apart. What is the magnitude of the gravitational attraction between the books?
  50. Physics

    How far does a plane fly in 15 s while its velocity is changing from 145 m/s to 75 m/s at a uniform rate of acceleration?
  51. physics

    calculate the work done in lifting a 300N weight to a height of 10 m with an acceleration 0.5m/second square.
  52. physics

    Find the gravitational force of attraction between two balls each weighing 10 kg,when placed at a distance of 1 meter apart
  53. Physics (HELP)

    An object inside of the focal point of a concave mirror produces an image that is...
  54. Physics

    A tennis ball is thrown up in the air. It stays there for 12.1 seconds how fast did you throw it?
  55. physics

    If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 63 cm*29 cm*20cm, what would its mass be?
  56. physics

    5. An object that has kinetic energy must have ____________________. A) momentum. B) acceleration. C) a force applied to it. D) All of these. E) None of these.
  57. physics

    A stone is dropped from a ledge 45m high. What will its speed on reaching the Earth be?

    a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine? Please help
  59. Physics

    What is the acceleration experienced by the tip of the 1.5 cm-long sweep second hand on your wrist watch?
  60. Physics

    What happens when you plug more equipment into apower board in terms of it's resistance and current. Explain.
  61. physics

    a baseboard heater draws a current of 10.0A. How much charge passes through it in a time of 30 min?
  62. Physics

    A 0.055 kg golf ball leaves the tee at 50 m/s. what is its change in momentum (impulse) ?
  63. science/physics

    What acceleration will you give to a 25.8 kg box if you push it horizontally with a net force of 89.6 N?
  64. Physics

    Throw a stone straight up in the air. At its highest height what is its speed? Is it accelerating then?
  65. physics

    A 1.25-kg book in space has a weight of 8.35 N. What is the value of the gravitational field at that location? GIVEN: m = 1.25 kg W = 8.35 N Therefore, they want the acceleration. Would I use this equation g = Fg/m?
  66. Physics

    Find the length of a simple pendulum that completes 16.0 oscillations in 52.0 s. CAN YOU PLEASE EXPLAIN SPECIFICALLY , THANK YOU!
  67. Physics

    How long does it take a car to change it velocity from 15m/s if it accelerarate uniformly at 5m/s square?
  68. physics

    A jet travels at 435 m/s. How long does it take to travel 253 m? Answer in units of s
  69. physics

    What is the resistance of a 40 watt light bulb if it is it to full brilliance by a current of .33amps?
  70. physics

    How long does it take light to travel through a 3.2mm -thick piece of window glass?
  71. short physics question

    What is the significance of the fact that both the horizontal force and motion are both forwards?
  72. physics

    a truck travels at 90km/hr W for 10 min. then at 110 km/ hr for 38 km what was the trucks average velocity
  73. physics

    If a car moves at 36km/h accelerate uniformly at 4m/s calculate it velocity in 2 seconds.
  74. physics

    A proton is suspended at rest in a uniform field E.Take into account gravity and determine E.
  75. physics

    how many electrons must be removed from an electrically neutral silver dollar to give a charge of +2.8 uc
  76. physics

    which object will have higher inertia a rock of 20kg or a hollow ball of 22kg
  77. physics

    Why is there always a difference between the experimentally calcuated error for resistance, and the actual components tolerance value?
  78. Physics

    Determine the magnitude of current I3. Let the voltage of the bottom battery VB =13.0 volts and r= 1.0 Ω.
  79. Physics

    Two electrons exert a force of repulsion of 0.96 N on each other. How far apart are they? The elemental charge is 1.602 × 10 −19 C .
  80. Physics

    How does mass affect the motion of objects falling freely under the influence of gravity?
  81. Physics

    A 200N sign hangs and makes a 15.5 angle with the horizontal. What is the Tension in each rope?
  82. physics

    what is the frequncy per minute of a skater making rounds at rink with radius of 2.5 m of her speed is 5 km/hr?
  83. Physics

    A dog is running at 9.1 m/s for 7.8 km. How long did it take him to arrive at his destination? (Give answer in seconds)
  84. Physics

    An object is shot upwards, from the ground, with an initial velocity of 120 m/s. How high will it be after 4.0s?
  85. Physics

    A car travelled at an average speed of 200km/h. What distance does it cover in 10minutes.
  86. Physics

    How much work is needed to stop a 20g bullet moving with a speed of 150ms-1
  87. physics

    A fisherman's scale stretches 3.5 cm when a 2.1 kg fish hangs from it. What is the spring stiffness constant?
  88. physics

    what is the magnitude and direction of the electric field 20.0 cm cm directly above an isolated 33.0 10 neg6 c charge?
  89. Physics

    Two positive charge of 12cand 8c are 10cm apart each other. The work done in bringing them 4cm closer is

    What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high?

    a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine?
  92. physics

    Yeah I know it is! But it's really confusing me and it's what my teacher wants. Say I was to pick a height of 25m and a Velocity of 20.0m/s, what would be my next step?
  93. physics

    what has no beginning and no end. it is also considered as the medium for light in einstein's theory of relativity
  94. physics

    using well labelled diagrams,briefly describe how you would determine the density of an irregular object
  95. 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/h?
  96. Physics

    Find the net force and the acceleration for the situation below. 30N 20N <---------------[ 5.1kg]---------->
  97. physics

    A ball is thrown vertically upward at 14.7 m/s. Show that its maximum height will be 11m.
  98. Physics

    How would I find final velocity at the top of an inclined ramp with a given angle theta?
  99. physics

    Two masses are hanging over a frictionless, massless pulley as shown blocks_pulley_aMass m1 is 5.0 kg and mass m2 is 7.0 kg
  100. Physics

    a 50 g marble is released from a height 1 m above the floor. Calculate its momentum just before hitting the ground