Chanz

Most popular questions and responses by Chanz
  1. Physics - Am I correct?

    1. A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the first stone moves away at a velocity of 0.92 m/s [N71oW] and the second stone moves away at a velocity of 1.25 m/s [N44oE], what was the initial

    asked on January 19, 2016
  2. Physics - Repost because of no response

    1. A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the first stone moves away at a velocity of 0.92 m/s [N71oW] and the second stone moves away at a velocity of 1.25 m/s [N44oE], what was the initial

    asked on January 19, 2016
  1. physics

    T = 2pi sqrt(m/k) Start the second at T/2

    posted on June 9, 2016
  2. Physics

    100 - mg sin30 = ma

    posted on June 9, 2016
  3. Physics I (Classical)

    tan-1(2/3) t = x/v = 85/3

    posted on June 8, 2016
  4. Physics

    mc(Tf - Ti)coffee + mc(Tf - Ti)milk = 0 solve for Tf (and you'll need to look up the specific heat of water)

    posted on June 8, 2016
  5. Physics

    Sure don't. After 1 sec both she and the bus are moving east at 2 m/s so someone on the ground sees 4m/s. At 2 sec the bus is moving 4m/s so someone outside sees 6m/s

    posted on June 7, 2016
  6. Physics

    Area = pi r^2 Look at your units and figure out what needs to be multiplied by what.

    posted on June 7, 2016
  7. physics

    a) mv (gun) = mv (bullet) b) 1/2mv^2 = Fd solve for f (and watch your units)

    posted on June 7, 2016
  8. Physics

    1/p + 1/q = 1/f Solve for q (the height doesn't enter in to it)

    posted on June 7, 2016
  9. physics check

    yes

    posted on June 7, 2016
  10. Physics help

    Square both sides, cross multiply, divide both sides by m^2, subtract 1 from each side, multiply both sides by -c^2

    posted on June 7, 2016
  11. Physics

    v^2 = 2gx Solve for x and don't forget to add in the initial 105.

    posted on June 7, 2016
  12. Physics

    Oooooh. Sorry. N

    posted on June 7, 2016
  13. Physics

    All I see to the right is an ad.

    posted on June 7, 2016
  14. Physics

    v^2 = 2gx solve for v

    posted on June 7, 2016
  15. Physics

    Definitely unit 9

    posted on June 7, 2016
  16. physics

    23. They'll come to an equilibrium temp regardless.

    posted on June 7, 2016
  17. physics

    Actually it can be greater than one. Velcro for example has a mu greater than one.

    posted on June 7, 2016
  18. Physics

    tan-1 (10/200)

    posted on June 7, 2016
  19. physics

    See other post

    posted on June 7, 2016
  20. Physics

    Acceleration is not a force. The fourth force is the normal force the ramp exerts on the log.

    posted on June 7, 2016
  21. physics

    KE = 1/2 mv^2 Solve for v I get 3.69

    posted on June 7, 2016
  22. Physics

    f = fo v/v-vs You'll have to look up the speed of sound at 10o, and don't forget to convert to m/s

    posted on June 7, 2016
  23. maths,science, physics

    Another conservation of momentum question. mv before = mv after. Solve for second v.

    posted on June 7, 2016
  24. maths,science, physics

    Conservation of momentum. Zero = zero.

    posted on June 7, 2016
  25. maths,science, physics

    Little pushy aren't you? Especially since we have no diagram.

    posted on June 7, 2016
  26. Physics

    Water at 900 is called steam and it can have a wide variety of densities based on pressure.

    posted on June 7, 2016
  27. Physics

    See next post

    posted on June 7, 2016
  28. Physics

    3.9 = vo cosθ (.555) ½ g (5552 ) = vo sinθ Divide eq 2 by eq 1 to clear vo do a tan-1 to solve

    posted on June 7, 2016
  29. physics

    Nope. All I can tell you is that 100g of water has been displaced.

    posted on May 12, 2016
  30. physics

    Not enough info

    posted on May 12, 2016
  31. Physics

    P = E/t

    posted on May 12, 2016
  32. Physics

    If you just do a FBD on the last cart and ignore all the rest a = F/m = 3.3/2.2 = 1.5 A classic example of useless smoke and mirrors.

    posted on May 12, 2016
  33. physics

    You're in the wrong forum and you refer to a question that isn't there.

    posted on May 12, 2016
  34. Biomechanics/Physics

    W = mgh Time has no bearing.

    posted on May 12, 2016
  35. Physics

    L = Iω You'll have to look up I for a solid cylinder and a mass at a distance. Also need to convert rev/sec into rad/sec. When you have a) and b) add them for your total L. Find the new I for masses at the new distance. Then conservation of L

    posted on May 12, 2016
  36. Physics - Fields

    v = k/r^2 solve for k Now use k and find v for r=1 and r=2. The difference of those (remember v is a vector) will be your answer.

    posted on May 12, 2016
  37. Physics

    You're on the right track. Note that x=0 when the rocket lands, solve for t and then x = vt to see how far it drifted.

    posted on May 12, 2016
  38. physics

    vx stays constant at 16cos28 time to goal = 16.8/16cos28 vy at goal = = 16.8sin28(t)- 1/2gt^2 Then Pythagoean with vx and vy

    posted on May 12, 2016
  39. physics

    τ t = ΔIω Solve for ω θ = ωt and s = rθ Same technique for part two with new τ

    posted on May 12, 2016
  40. physics

    L = I omega you'll have to assume it's a solid sphere which is not quite correct (or you can look up the correct I for earth). Now how do you get omega? How many radians in how much time?

    posted on May 12, 2016
  41. physics

    t = v sin35/g x = v cos35 t

    posted on May 12, 2016
  42. Physics

    See next post

    posted on May 12, 2016
  43. Physics

    t sound = x/vs t cannonball = x/vc difference is warning time

    posted on May 12, 2016
  44. PHYSICS HELP Harmonic Motion

    m1v1 = (m1+m2)vf 1/2 (m1 + m2) vf^2 = 1/2 kx^2 solve for x

    posted on May 12, 2016
  45. Physics

    time to get to 8th floor: t = v/g distance fallen during that time: y = 1/2gt^2 divide by 8m/floor and yes it fell 15 floors total (watch, the last is 12m)

    posted on May 12, 2016
  46. PHYSICS

    mu(m1+m2)g = (m1+m2)a so mu(g) = a speed before slide begins: v = sqrt(2ax) m1 vi = (m1+m2)v solve for vi

    posted on May 12, 2016
  47. Physics

    P = 2 pi sqrt(L/g) Solve for L L - Lcos5.34 = h now mgh = 1/2mv^2 and the m's cancel, solve for v

    posted on May 12, 2016
  48. Physics

    P = W/t

    posted on May 12, 2016
  49. Physics

    v = f(lambda) v in this case is x/t then solve for f

    posted on May 12, 2016
  50. Physics

    v = f (lambda) Solve for lambda

    posted on May 12, 2016
  51. Physics

    Normal: Fn=mr(omega^2) You'll need to change rev/sec into rad/sec Friction: Ff= mg Coefficient of friction mu = Ff/Fn

    posted on May 12, 2016
  52. Physics

    E = mgh Solve for h

    posted on May 12, 2016
  53. Physics

    x = vt

    posted on May 12, 2016
  54. physics

    In y max height: y = v^2/g time: t = 2v/g In x x = vt (you found from y)

    posted on May 12, 2016
  55. physics

    PE = mgh Convert to kg

    posted on May 12, 2016
  56. Physics

    4.59e-6/pi r^2 = v Watch your units.

    posted on April 21, 2016
  57. physics

    "in the drawing"

    posted on April 21, 2016
  58. Physics

    a) Fb = mg + T b) Can't tell. Is it submerged? How deep is the water?

    posted on April 21, 2016
  59. physics

    This can't be solved without knowing the distance the car travelled. Fd - mgh - 1/2mv^2 = W lost

    posted on April 21, 2016
  60. physics

    Umm. Didn't you just tell me 30cm

    posted on April 20, 2016
  61. Physics

    Sorry should just be V = Ed End of the day....

    posted on April 20, 2016
  62. Physics

    PE = Eq/d (Change in voltage is PE)

    posted on April 20, 2016
  63. Physics

    a) W = Fd That's the change in KE b) Same thing c) Now you must find the final velocities. KE = 1/2mv^2, solve for v momentum = mv d) momentum is always conserved e) a = F/m, v = at, solve for t

    posted on April 20, 2016
  64. Physics

    Just add the two.

    posted on April 20, 2016
  65. physics, english, chemistry, maths

    400 grams. Small girl. Small steps too. Anyway P = mgh/t. Need to convert your units.

    posted on April 20, 2016
  66. physics

    a) V = BA/t (you've been given B/t) b) i = V/R c) E/t =P = Vi

    posted on April 20, 2016
  67. Physics

    .8g - .55g = (.55+.8)a T-.8g = .8a (you can choose either)

    posted on April 20, 2016
  68. physics

    The boy is imparting an impulse with his jump which we know nothing about.

    posted on April 20, 2016
  69. Physics helpppp

    Two eq, two unknown: .25(9) = (.25+m2)vf 1/2(.25 + m2)vf^2 = 8.1

    posted on April 20, 2016
  70. physics

    Does the first ball stop? If so the second has twice the mass. KE = 1/2mv^2

    posted on April 20, 2016
  71. physics

    Since the second capacitor is 4x as big it will hold charge in a 4:1 ratio.

    posted on April 20, 2016
  72. Physics

    Is there a moderator who can get Kenneth banned. We don't need this. Not to mention T - mg = ma is correct. Look at the directions. T and a are up, g is down.

    posted on April 19, 2016
  73. Physics

    Gotta side with Damon on this one. KE is not conserved, but momentum is.

    posted on April 19, 2016
  74. Physics

    a) v = at b) t = v/a d) x = 1/2 at^2 e)x = vt f) x = 1/2at^2 g) v = total dist/total time

    posted on April 19, 2016
  75. Physics

    You just said same temperature. So 27.

    posted on April 19, 2016
  76. Physics

    a = v^2/r µ = Ff/Fn = (v^2/r)/g (m's cancel)

    posted on April 15, 2016
  77. PHYSICS PLS HELP ME EVERYONE

    Sigh..."as shown". Perhaps the amazing Kreskin can help you.

    posted on April 15, 2016
  78. physics

    Do each individually, then add (or subtract) the two vectors F = kq1q2/r^2 for example for a) F = 9e9(86.5e-3)(18.8e-3)/.488^2 pulling towards negative x direction now do it for the 36.3e-3 charge which also pushes towards the negative x direction.

    posted on April 15, 2016
  79. PHYSICS!!

    Toward: fo = fs (1+vo/v) away is minus instead of plus.

    posted on April 15, 2016
  80. PHYSICS

    Look at the units gray = J/kg How will you get joules out of this?

    posted on April 15, 2016
  81. PHYSICS

    v= fλ

    posted on April 15, 2016
  82. PHYSICS

    We have no way of knowing the arrangement of the charges. Are they the vertices of a triangle? Are they on a line? See, the phrase "as shown" means that we can see it. We can't. I can tell you in general how to do these. Draw a line between A and the first

    posted on April 14, 2016
  83. physics

    Why?

    posted on April 14, 2016
  84. physics

    P = W/t So what's the net work you're getting out of the system?

    posted on April 14, 2016
  85. AP Physics

    See prev post. I can't go step by step without showing you a free body diagram. So you make one. It will help you learn the material.Separate the Tension force into its components and look and see what's happening in x and y. Geez you're in AP. Use your

    posted on April 14, 2016
  86. AP Physics 1

    As shown....how I hate those words.

    posted on April 14, 2016
  87. physics

    Q = mc ΔT + mL You'll need to look up specific heat and latent heat of fusion for copper. And you need to know its melting point.

    posted on April 14, 2016
  88. physics

    a) equal and opposite b) put in the numbers and see c) only electrons ever move d) from negative to positive

    posted on April 14, 2016
  89. physics

    C = κεoA/d εo is a constant make sure to convert units

    posted on April 14, 2016
  90. Physics Help

    I did this in a previous post. I said Fdrag - mg = ma Not really sure which they're asking for.

    posted on April 14, 2016
  91. Physics

    Well F = P/A I guess that's what they're looking for.

    posted on April 14, 2016
  92. physics

    See prev post.

    posted on April 13, 2016
  93. physics

    Oops. I mean 20 m/s. Even more ridiculous.

    posted on April 13, 2016
  94. physics

    PS. He's rowing 10 m/s by the end of this. Don't think too many people can row 22 mph....

    posted on April 13, 2016
  95. physics

    x = 1/2 at^2 (across) solve for t x = vt (downstream)

    posted on April 13, 2016
  96. physics

    y components cancel. From A: kq/r^2 cos 60 in positive x direction From C: kq/r^2 cos 60 in positive x direction So save time: E = 2kq cos60/r^2

    posted on April 13, 2016
  97. AP Physics

    As shown....

    posted on April 13, 2016
  98. AP Physics

    First find the tension in the thread: Tcos18 = mg Now the charge Tsin18 = kq^2/r Find r from geometry .25 sin18 = r/2

    posted on April 13, 2016