Physics!

74,459 results, page 41

  1. physics

    a ball is dropped from the top of a 5m tall building. what is the velocity when it hits the ground?
  2. Physics?

    the total mass-energy of one pound of anything is about how many joules
  3. Physics

    If the specific volume of red brass is 0.001865 ft/3lb. What would be the density? Thanks!
  4. physics

    what is the strength of the electric field at (x,y)=(3.0m, 3.0m)? where v=(120x^2-290y^2)V, where x and y are in meters. Please explain. thanks
  5. Physics

    Calculate the average speed of the car in km/h, it can accelerate from 96.56 km/hr in 4.3 seconds. Distance is not provided
  6. Physics

    How much impulse is given to a 25 kg train car that is accelerated from rest to 12 m/s in 4 sec?
  7. Physics

    what is the average force needed to stop a car traveling 28m/s in 55m?
  8. Physics

    what is the average force needed to stop a car traveling 28m/s in 55m?
  9. physics

    why do we not feel weightless even though we are in "free fall" toward the sun?
  10. physics

    An electron with initial speed = 2.54×10^7 m/s is traveling parallel to an electric field of magnitude = 1.66×10^4 N/C .
  11. Physics

    Find the maximum height reached by a ball thrown upward at a velocity of 95 ft/s
  12. Physics

    A horse on a merry-go-round is 20 ft from the center and travels at 10 mph. What is its angular speed?
  13. Physics

    At what temp would an intrensic semiconductor behave like a perfect insulator?Why?
  14. Physics..PLZ HELP!

    The magnitude of the magnetic field 8.0 cm from a straight wire carrying a current of 6.0 A is A) 3.0 ƒÎ ~ T. B) 1.5 ~ T. C) 1.5 ~ T. D) 3.0 ~ T. E) 3.0 ~ T.
  15. Physics

    What must the critical angle be if light transmits from diamond into water?
  16. Physics

    What does a simple pendulum travel through at the lowest point during its period?
  17. PHYSICS

    At what angle should you launch a projectile from the ground so that it has the greatest time of flight?
  18. Note for Ms. Sue

    Check out the Physics posting on the top of the list. Can it be deleted?
  19. physics

    A strong lightning bolt transfers about 26 C to Earth. How many electrons are transferred?
  20. physics

    a40w motor conectedto a 9v battery can lift an object 40m in 10s
  21. physics

    a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up.
  22. physics

    a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up.
  23. physics

    c). at what speed does it hit the ground? d). what total length of time is the ball in the air
  24. physics

    Find the outside surface area. Note that the containter has a top. (Assume a = 1.95 in, b = 1.35 in, c = 1.3 in, d = 1.25 in, and e = 2 in.)
  25. physics

    Two point charges, +3.27 µC and -6.15 µC, are separated by 1.08 m. What is the electric potential midway between them?
  26. physics

    what law is it when gravity pushes down on a rocket that is accelerating at a rate of 270 km/h
  27. PHYSICS/MATH

    What is your average power if you lift a 33.8 kg box at a constant speed to a height of 3.27 m in 6.10 s?
  28. physics

    How does friction slow down a moving object — for example, a soccer ball?
  29. physics

    How do we represent the graph for a ball which is dropped to the ground and caught when it bounces up again?
  30. physics

    How do we represent the graph for a ball which is dropped to the ground and caught when it bounces up again?
  31. physics

    How do we represent the graph for a ball which is dropped to the ground and caught when it bounces up again?
  32. physics

    For the vectors in the figure below, with a = 8, b = 7, and c = 113, calculate the following dot products.
  33. physics

    What type of contamination involves Rags, tie wraps, and safety wire?
  34. Physics

    1. How much work must be done to stop a 1750 kg truck traveling at 110.0 km/h?
  35. physics

    if a car goes twice as fast will the breaking distance also double
  36. PHYSICS

    EXPLAIN FRICTION AT RIGID SUPPORT OF A PENDULUM SUSPENDED USING A STRING.
  37. Physics

    Calculate the power of a hair dryer that operates on 120V and draws a current of 10 A.
  38. physics

    What is the magnitude of the electrostatic force on a +5 C harge 1.75 m to the left of a -2.5 C Charge? (show your work)
  39. physics

    A car traveling at 5.9 m/s accelerates at 2.12 m/s2 for 19.5 seconds. To the nearest meter how far does it travel.
  40. Physics

    How much work does it take to stretch a spring with k= 150N/M 10cm from equilibrium?
  41. Physics

    Find the deBroglie wavelength of a 0.10kg ball moving at 19.0m/s? Why don’t we see this wave?
  42. Physics

    If an object on Pluto has a mass of 10 kg and a weight of 6.6 N, what is the acceleration due to gravity at its location?
  43. physics

    what is the source of error occur in experiment Standing Waves (tuning fork)?
  44. Physics

    An object with an initial velocity of 5 m/s has a constant acceleration of 2 m/s^2. When its speed is 15 m/s how far has it traveled?
  45. physics

    an automobile travels at a uniform speed of 88 kph. how many metres does it travel in 1 second?
  46. Physics

    What is electric field required at the tip of sharp needle to ionize air?
  47. physics

    2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?
  48. physics

    2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?
  49. physics

    2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?
  50. physics

    2) The weight of tank is 50 000 kg, area of his tracks is 5 m2. What pressure acts on the ground?
  51. Physics

    What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 5.00 µC and a = 2.50? (The positive direction is to the right.)
  52. Physics

    What is the force on the charge located at x = +8.00 cm in Figure 17.40(a) given that q = 5.00 µC and a = 2.50? (The positive direction is to the right.)
  53. physics

    if a swimmer swims 85.4 yards in five minutes, how many meters will he swim in 70.0 seconds?
  54. Physics

    Could someone explain to me about how live, earth and neutral wires work?
  55. physics

    A car accelerates uniformly from 10m/s to 24m/s.Ehat is its average speed?
  56. Physics

    I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it
  57. Physics

    I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it
  58. Physics

    how to find the max height of a cat that is thrown at 9.8 m/s and is in the air for a total of 4 seconds.
  59. physics

    Calculate the speed of an electron that is accelerated through the potential difference of 123 V.
  60. Physics

    Have no idea how to do this! Determine the weight of a 1768.0-kg car which is moving at a speed of 26 m/s.
  61. physics

    A 0.355-kg object undergoing SHM has ax = 2.30 m/s2 when x = 0.235 m. What is the time for one oscillation?
  62. Physics - projectile

    a ball is thrown straight up at 50 m/s. What speed will it be when it returns to the thrower's hand?
  63. Physics

    the higher the angle the longer an objecg will be in the air , but dose that mean it will go further ?
  64. physics

    a 4.5kw electric motor is 90% efficient.how much energy it use in 20 seconds.
  65. Physics

    5.A coin and a piece of glass are both heated to 60°C. Which will feel warmer when you touch it?
  66. Physics

    A coin and a piece of glass are both heated to 60°C. Which will feel warmer when you touch it?
  67. Physical Science

    What are three medical technologies that rely on the physics of elementary particles?
  68. PHYSICS

    How could you repair an electric fan that is not working properly? Apply scientific method.
  69. PHYSICS

    How will you prepare a laboratory procedure to verify the validity of the hypothesis? Give an example.
  70. Physics

    Can you give me the summary of work,force,potential & kinetic energy,power?
  71. Physics

    A simple harmonic pendulum has a period of 3.19 s and initial speed of 2.12 m/s. Find the length.
  72. physics

    A magnetic field is uniform in a region of radius 10 cm, and increasing at 0.02 Tesla/second.
  73. physics

    In one dimension ,how does energy depend on size of region if an electron is confined there ??
  74. physics

    3 factors that we must always give when expressing a force vector quantity
  75. physics

    3 factors that we must always give when expressing a force vector quantity
  76. physics

    3 factors that we must always give when expressing a force vector quantity
  77. physics

    A rock is dropped from rest. How fast is it going after it has been falling for 8.3 s?
  78. Physics

    A rock is dropped from rest. How fast is it going after it has been falling for 8.3 s?
  79. physics

    A speedboat increases in speed from 21 m/s to 30.9 m/s in a distance 191 m. Find the magnitude of its acceleration.
  80. Physics

    ) What is the minimum uncertainty in the velocity of an electron that is known to be somewhere between 0.050 nm and 0.10 nm from a proton?
  81. physics

    What total capacitances can you make by connecting a 4.98 µF and 8.98 µF capacitor together? series ? parallel?
  82. PHYSICS

    A car traveling at 17 m/s accelerates at 1.37 m/s2 for 12 seconds. To the nearest meter how far does it travel?
  83. Physics

    What is the minimum uncertainty in the velocity of an electron that is known to be somewhere between 0.050 nm and 0.10 nm from a proton
  84. 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?
  85. PHYSICS

    A girl rows 10 km downstream in 2 h. Her return trip takes 3 h. How fast is the current. in km/
  86. Physics

    An airplane with an airspeed of 50km/h lands on a runway where the wind speed is 30km/h .
  87. Physics

    Determine the displacement of a plane that experiences uniform acceleration from 77 m/s to 110 m/s in 16 seconds.
  88. physics

    Find the mass of 0°C ice that 10g of 100 °C steam will completely melt
  89. Physics!

    How much impulse stops a 46-kg carton sliding at 3.0m/s when it meets a rough surface?
  90. physics

    A 60 kg of sprinter accelerates from rest at 2.5 m?s^2 East for 4s. What force is acting and what is the final speed?
  91. physics

    If the electron experiences a force of 5.6 x 10-6 N, how large is the field between the deflection plates?
  92. Physics 1

    If you see an object rotating, is there necessarily net torque acting on it? Explain
  93. Physics 1

    What torque is needed to accelerate a 70Kg disk with a 20 cm radius from rest to 10 rad/s?
  94. Physics

    The maximum kinetic energy of a mass-spring system in SHM is equal to
  95. physics

    What is the magnitude of the acceleration of anelectron in a 2200 N/C electric field?I want the solution to this problem.
  96. Physics question

    Does the crest of a wave usually have a larger amplitude than the trough?
  97. physics

    10 kg of ice at -4 C is dropped into 15.1 kg of water at 36 C. What is the final temperature of the mixture? T_final =
  98. physics

    Calculate the gravity on a planet using a pendulum that has a period of 2.45 s having a length of 1.25 m.
  99. physics

    What is the maximum walking speed of an adult man whose legs are each 0.90 m long?
  100. physics

    I weigh 130 pounds, so how much would I weight on a neutron star?
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