Math/Physics

215,206 results, page 32

  1. physics

    What is the distance traveled in 22 s as a given sound moves through seawater at 25 C?
  2. physics

    A boy walks 13 km in 2.0 h. What is his speed in km/h and m/s. Show work.
  3. Physics

    (Delete the spaces between the characters for the URL of the question): h t t p : / / g o o . g l / E 9 M X o
  4. physics

    A car accelerates from 10.0 m/s to 30 m/s at a rate of 3.1 m/s2. How far does it travel while accelerating?
  5. physics

    How many joules of heat are required to melt 20.0 kg of ice at 0°C?
  6. physics

    A submarine dives 92 m at an angle of 7° below the horizontal. What are the two components? x = m y = m
  7. Physics

    How is the Sky Screamer at Six Flags an example of Newton's First Law?
  8. physics

    A bus slows down uniformly from 68.4 km/h to 0 km/h in 23.7 s. How far does it travel before stopping?
  9. AP PHYSICS >>>please help

    HOW WOULD YOU integrate this equation between zero and pi/2 1/(1+(tan^2008)xdx
  10. Physics

    How can we find the resultant force if the mass and SPEED are given?? Help me please!!
  11. Physics

    Calculate the magnitude of the force between two 3.95 µC point charges 7.4 cm apart
  12. Physics

    A car with a mass of 1500kg is moving at a speed of 50 km/h. What is it's Ek?
  13. Physics

    Describe the mechanism that make rifles recoiless.
  14. physics

    Which of the following statements is false regarding the ‘drift’ of charge carriers?
  15. Physics

    How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?
  16. physics

    Suppose you are in space can you decide whether you are in rest or motion
  17. Physics

    Does a ball that is rolled on a floor speed up before slowing down?
  18. Physics (HELP)

    Lenses can be either converging or diverging. True False
  19. physics

    what is the velocity of the object as a function of time? for 0s < t < 10s
  20. Physics

    If the angle decreases what will happen to the tension? Please explain why.
  21. physics

    if you pushed 50 newtons up 2 meters what was the length of the ramp
  22. physics

    is the expression f=ma, true in all cases.give reasons
  23. Physics

    How much work is done against gravity in lifting a 6.5-kg weight through a distance of 21 cm?
  24. physics

    calc the buoyant force on a 2 L helium balloon
  25. Physics

    Please help! How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?
  26. physics

    Give an account of Neil's Bohr and it's limitation
  27. Physics

    How much force does it take to push an 80 lb. steel cart on wheels?
  28. physics

    A car accelerates from 10.0 m/s to 30 m/s at a rate of 3.5 m/s2. How far does it travel while accelerating?
  29. physics

    an electron (m= 9.11 x 10^-31 kg) and a proton (m+ 1.6 x 10^-27 kg) are separated by 1.0 x 10^-10 m. what is the gravitation force between them? help please!
  30. Physics 11

    Displacement is given by x=2+3t+4t². Find the value of instantaneous acceleration.
  31. physics

    Why is voltmeter connected in parallel in electric circuit?
  32. Physics

    What are the differences between a motor and a generator? I know they both use electromagnets, but how do they use them differently?
  33. physics

    Why is the pressure different in different areas of a gas filled chamber.
  34. Physics

    A proton has a mass of 1.672 X 10 -27 kg. What is its weight? (using 9.81 for gravity)
  35. Physics

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

    34.0 km/h, speeds up at a constant rate of 3.9 m/s2. What velocity does it reach 6.8 s later?
  37. Physics

    Why do ironic compounds have high melting points?
  38. physics

    Two instances during which the heating effect of current is not required
  39. Physics

    What is the proof for voltage versus length in the equation V=Cx?
  40. PHYSICS

    WHAT DOES A DISPLACEMENT-TIME BALLON GRAPH REPRESENTS?
  41. physics

    how much force is needed to accelerate a 1800 kg car 3m/s 2
  42. PHYSICS

    two equal masses of 12kg each are 2m apart. WHat is the gravitational force between them?
  43. physics

    Rearrange the kinetic energy equation to solve for: m And v
  44. Physics

    find the direction and magnitude of the vectors : a. A=(25m)x+(-12)y b. B=(2.0)x +(15)y c. A+B
  45. physics

    if an object has a mass of 17 kg what is approximate weight on earth
  46. Physics

    Why does a gun move backward(recoil) when it is fired?
  47. physics

    Find the length of a pendulum that oscillates with a frequency of 0.19 Hz
  48. physics

    the acceleration of an object and the net for acting on it are proportional
  49. Physics

    Why is warm water used for bathing during cold weather?
  50. physics

    explain why the string stretches while the system is rotating?
  51. physics

    five factors that affect the rate of diffusion in GASES
  52. Physics

    What physical phenomenom might produce emission spectra?
  53. physics

    State the conditions for total internal reflection
  54. Physics

    What is the magnitude of the electric field 0.3 m from a 10-4 C point charge?
  55. physics

    DEFINE WITH FORMULA AREA AND VOLUME EXPANSIVITY
  56. physics

    DEFINE WITH FORMULA AREA AND VOLUME EXPANSIVITY
  57. Physics

    Is there normal contact force on a frictionless surface?
  58. Calc and Physics

    Damon and Reiny. Thanks for your quick and thorough responses.
  59. PHYSICS

    How fast is 65 mph in meters per seconds? (i just need the answer) thanks very much
  60. Physics

    Find the magnitude of the sum of two forces, one 24 N and the other 9 N, when the angle between them is 60.0o.
  61. physics

    What velocity at 60.0 kg jogger a kinetic energy 1,080?
  62. Physics/Science

    How much heat must be removed from 15.0g of water at 10°C to become ice at 0°C?
  63. mathematical physics

    Show that : vector del(r^2) = 2vector r
  64. physics

    If a voltage difference of 3V causes a 1.5 current, what is the resistance in the circuit
  65. Physics

    How fast does a car have to accelerate to go from 10.0 m/s to 30 m/s in 125 meters?
  66. Physics

    Why the household appliances starts / runs as soon as we switch them on
  67. physics

    what is relative velocity?Answer with an example & description also a diagram.
  68. Philosophy

    In what ways can we say that quantum physics both is and is not classical science?
  69. Physics

    using uniform acceleration, how can I find the displacement of an object?
  70. physics

    if a car goes twice as fast will the breaking distance also double
  71. Physics

    1. How can voltage be induced in a wire? Can someone help me figure out an answer to this? please
  72. Physics

    How to get the equivalent resistance in this figure -----------r2------- | | | Battery. R1 R3 | | | -----------R4------ Values: R1= 90 R2= 50 R3= 40 R4= 20
  73. physics

    Why projectiles launched at complimentary angles have the same range?
  74. physics

    Three resistors, 12 Ù, 18 Ù and 36 Ù, are connected in parallel. What is the equivalent resistance
  75. Math( 7th grade advanced math so 8th grade math)

    Salvador bought 3 pounds of oranges that cost x cents per pound, a cucumber for 59 cents, and 2 bananas for 35 cents. Write an expression in simplest form that represents the amount spent. I don't understand how you would write that into an equation. I don't think I should be ...
  76. math

    A high school guidance counselor conducts a survey to find the student's first choice for a college major and found that 65% of students choose math. If three students are chosen at a random, what is the probability that at least one of them would choose math?
  77. Math

    Mario has a ribbon that is 5/8 yard long if she cuts her ribbon into 6 equal pieces what will be the length of each new pieces? I really need some help this test i'm doing has 50 math questions. And i'm really bad at math.
  78. Physics

    Need Help with physics! Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 17.0 m/s. At the same time, car 2 is 1.3 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding up with an ...
  79. statistics

    At a certain college, 15% of the students received an A in their required math course, 10% received an A in their required Chemistry course, 5% received an A in both. A student is selected at random. a.) What is the probability tha he receieved an A in either Chemistry or Math...
  80. statistics

    At a certain college, 15% of the students received an A in their required math course, 10% receieved an A in their required chemistry course, and 5% received an A in both. A student is selected at random. a.) What is the probability that he received an A in either chemistry or...
  81. Physics

    For the answer to the following post, do you mean that the frequency does not depend on the radius? Posted by Johnny on Saturday, March 13, 2010 at 5:49pm. The frequency of circular motion for a charged particle moving around in the presence of a uniform magnetic field does ...
  82. Physics

    Consider the following four possibilities for two point charges and choose the one(s) that do not change the magnitude of the electrostatic force that each charge exerts on the other: A. Double the magnitude of each charge and double the separation between them. B. Double the ...
  83. Physics

    When do we have to give up on an old theory and try to come up with a new theory? Would it be when the old theory under goes changes? Also, how would I compose my answer to this question into a paragraph? This happens when we suspect that the theory is not perfect. E.g., the ...
  84. Physics-Dr. Bob cannyou look at my work-I'm still

    had this question last night for Dr. Bob-A fox sees a piece of carrion thrown from a nest 14 m high and goes to get it. Carrion is thrown 1.5 horizontal velocity. Fox is 7. m from base of tree. What is mgnitude of fox's average velocity if it grabscarrion just as it touches ...
  85. physics

    Your physics teacher drives an ideal frictionless car of mass 1000 kg which coasts along the level road to his home at a constant speed of 48 km/h with the engine turned off. It then coasts 40 m up his sloping driveway and comes to rest at the top without any braking required...
  86. math help

    i need to use mental math and the distributive property to simplify: can you pls check if this correct? a) 19(-6) i got: -114 or do i do like this: 10*(-6)=-60 9*(-6) =-54 -60 + -54= -114 b) 102* $21 i got: $2142 or do i do mental math like this: 100*21 = 2100 2 * 21 = 42 2100...
  87. math

    i m always having a problem in math. i can't do fraction easilly. im going to have an final exams , starting on 2 april . i hope if any one can help me. You need to tell us, in detail, what you don't understand about fractions. o!isnt the test the...SAT?? yes,,im good at math ...
  88. physics

    light travels from ethanol intro crown glass. what's the brewster angle in this situation? illustrate your answer with a light ray diagram. what's the signifcance of this angle of incidence? n1=1.36for ethanol nR=1.52 for crown glass tanangleB=nR/ni =1.52/1.36 =1.12 (48.2 ...
  89. physics

    You are flying to Chicago for a weekend away from the books. In your last physics class, you learned that the airflow over the wings of the plane creates a lift force, which acts perpendicular to the wings. When the plane is flying level, the upward lift force exactly balances...
  90. physics

    You are flying to Chicago for a weekend away from the books. In your last physics class, you learned that the airflow over the wings of the plane creates a lift force, which acts perpendicular to the wings. When the plane is flying level, the upward lift force exactly balances...
  91. physics

    Im having severe trouble understanding the concept of Dimensions. And with 300 other students in my physics class the Professor doens't have alot of time for individual students.... The volume of a liquid flowing per second is called the volume flow rate Q and has the ...
  92. Physics

    Ammeter 1 reads 0.20 A. a. What should ammeter 3 indicate? b. What should ammeter 4 indicate? Given: RA = 22-OHM RB = 13-OHM A1 = 0.20 A Ammeter 2 reads 0.15A. a. Find the voltage across the 22-ohm resistor? b. Find the voltage across the 15-ohm resistor? c. What is the ...
  93. Lab for physics

    K, so we are doing this lab in physics where a ball on a string is put through a glass tube and then different washers (masses) are added to the string. A radius is measured out, and then the string is spun in a horizontal direction...so with different radii and different ...
  94. Math

    Kin has finished eight of the ten math problems. Phil has finished 2/5 of the math problems. How much more of the math has Kim finished?
  95. Math

    Yolanda completed 14/25 of her math problems before her break and 1/5 of her math problems after her break. What fraction of her math problems did she complete?
  96. math

    Decide which variables described is likely to have a normal or near normal distribution a. the number of courses remaining until graduation for the students in a small liveral arts college b. the SAT math scores for students in an advanced placement math class i think the ...
  97. Physics

    Note: I am in Algebra-based Physics Two 35.0 N weights are suspended at opposite ends of a rope that passes over a light, frictionless pulley. The pulley is attached to a chain that is fastened to the ceiling. Start solving this problem by making a free-body diagram of each ...
  98. physics hey bob

    you help me solve this problem. but how am i suppose to if i don't know the mass of the car? on a level road the stopping distance for an automobile is 35.0m for an initail speed of 90 km/hr what is the stopping distance of the same automobile on a simalr road with the slope 1...
  99. physics

    gravational force deimos, a satellite of amrs, has an average radius of 6.3 km. If the gravational force between deimos and a 3.0 kg rock at its surface is 2.5x10(-2)N..what is the mass of deimos ? Use the Universal Law of gravitation: Force= G Mm/distance^2 Solve for M. i did...
  100. Physics

    In really stormy weather and with the right conditions, the sky would dump a bunch of hail, making the roads rather hazardous. A choir director was driving his car in these conditions and going a tad fast under the circumstances. His car began to slip on the balls of ice in ...
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