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Introductory Physics Homework Help

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  1. micromass

    Guidelines for students and helpers

    Sep 23, 2014
    2
    42,846
    Replies: 2
    9
  2. Mark44

    Hey! I posted here but now it's gone!

    May 10, 2014
    0
    16,486
    Replies: 0
    6
  3. Doc Al

    Introductory Physics Formulary

    Mar 17, 2012
    6
    116,404
    Replies: 6
    18
  1. Jozefina Gramatikova

    By calculating a Taylor approximation, determine K

    Aug 17, 2018 at 1:48 PM
    0
    24
    Replies: 0
    0
  2. ubergewehr273

    Resolution of vectors for problems related to mechanics

    Aug 17, 2018 at 12:43 PM
    15
    132
    Replies: 15
    0
  3. baldbrain

    Reaction time while stopping a car

    ... 2
    Aug 17, 2018 at 12:41 PM
    21
    136
    Replies: 21
    2
  4. jxj

    Isolating Variable in Equation for conservation of momentum

    Aug 17, 2018 at 9:42 AM
    16
    208
    Replies: 16
    6
  5. Dgeld

    Electric field question

    Aug 17, 2018 at 8:59 AM
    7
    110
    Replies: 7
    1
  6. NicolaiTheDane

    Uncertainty question

    Aug 17, 2018 at 7:41 AM
    2
    71
    Replies: 2
    1
  7. subzero0137

    Thermodynamics problem

    Aug 17, 2018 at 12:12 AM
    3
    91
    Replies: 3
    0
  8. navneet9431

    Problem in calculating work done?

    Aug 16, 2018 at 11:04 PM
    3
    82
    Replies: 3
    2
  9. srekai

    Average Vector Acceleration Along a Curve and a Straight Section

    Aug 16, 2018 at 10:09 PM
    4
    181
    Replies: 4
    3
  10. KezPhysics

    How long does it take a 1ms pulse of light to travel 20m

    Aug 16, 2018 at 6:51 PM
    11
    231
    Replies: 11
    4
  11. Beth N

    Centripetal Force: Find banking angle on a roadway

    Aug 16, 2018 at 6:19 PM
    15
    330
    Replies: 15
    9
  12. Physics53

    Finding the mass of a photon with given wavelength

    Aug 16, 2018 at 5:10 PM
    5
    102
    Replies: 5
    0
  13. Exath

    Rotation of Rigid Bodies: Rotating stick with disc on top

    Aug 16, 2018 at 4:50 PM
    9
    115
    Replies: 9
    1
  14. Jozefina Gramatikova

    Find the tangent plane given at the stationary point.

    Aug 16, 2018 at 2:19 PM
    4
    127
    Replies: 4
    0
  15. Beth N

    Circular motion: normal force on a loop

    Aug 16, 2018 at 8:13 AM
    7
    220
    Replies: 7
    3
  16. AutumnBeds

    Force of an Expanding Ingot

    Aug 16, 2018 at 7:59 AM
    4
    488
    Replies: 4
    0
  17. Gregs6799

    Calculate the efficiency of a furnace’s heat transfer process

    Aug 16, 2018 at 7:57 AM
    9
    245
    Replies: 9
    0
  18. jxj

    Help with proportionality and literal equations

    Aug 15, 2018 at 9:38 PM
    17
    255
    Replies: 17
    9
  19. Jozefina Gramatikova

    Vector calculus- region-density-mass

    Aug 15, 2018 at 6:33 PM
    4
    111
    Replies: 4
    1
  20. navneet9431

    Calculation of work done by a variable force

    Aug 15, 2018 at 1:42 PM
    8
    154
    Replies: 8
    1
  21. Krushnaraj Pandya

    Potential difference across capacitors

    Aug 15, 2018 at 11:37 AM
    3
    184
    Replies: 3
    0
  22. Jozefina Gramatikova

    Fractional uncertainty of g on the surface of the Sun

    Aug 15, 2018 at 10:21 AM
    5
    181
    Replies: 5
    0
  23. srekai

    Combining springs to match Force vs Extension Graph

    Aug 15, 2018 at 2:22 AM
    2
    105
    Replies: 2
    0
  24. Beth N

    Equilibrium of Rigid Bodies. Rafter. What is moment arm?

    Aug 15, 2018 at 12:22 AM
    1
    100
    Replies: 1
    0
  25. songoku

    First Law of Thermodynamics -- Are ΔU, w and q positive, negative or zero when ice melts at 0oC

    Aug 14, 2018 at 8:18 PM
    6
    232
    Replies: 6
    4
  26. Zahid Iftikhar

    Bernoulli Equation

    Aug 14, 2018 at 12:51 PM
    5
    226
    Replies: 5
    3
  27. Philip Land

    Quantum defect

    Aug 14, 2018 at 10:25 AM
    3
    107
    Replies: 3
    1
  28. alijan kk

    An inflated tyre suddenly bursts -- What is the temperature of the air?

    Aug 14, 2018 at 10:09 AM
    9
    239
    Replies: 9
    0
  29. ridiculoid

    Balancing a shaft using mrL and mr vectors

    Aug 14, 2018 at 2:52 AM
    1
    74
    Replies: 1
    1
  30. lolseeker2

    Launched Horizontally?

    Aug 14, 2018 at 1:22 AM
    1
    116
    Replies: 1
    1
  31. Felipe Lincoln

    Newton's law and double stars moving in circles

    Aug 14, 2018 at 12:46 AM
    15
    315
    Replies: 15
    9
  32. alijan kk

    Is 1 degree F > 1degree C ?

    Aug 13, 2018 at 11:34 PM
    14
    229
    Replies: 14
    2
  33. Alexthekid

    Simple harmonic motion of charged particles

    Aug 13, 2018 at 8:24 PM
    3
    114
    Replies: 3
    0
  34. John Greger

    Derive relative intensities

    Aug 13, 2018 at 7:00 PM
    1
    138
    Replies: 1
    0
  35. Fluxation

    EMF Oppsition in Adjacent Wires +/- Swing

    N/A
    –
    –
    Replies: –
  36. lolseeker2

    How do I solve this projectile motion problem?

    ... 2
    Aug 13, 2018 at 12:18 AM
    33
    436
    Replies: 33
    2
  37. JessicaHelena

    Which forces am I missing in the FBDs?

    Aug 12, 2018 at 7:42 AM
    9
    244
    Replies: 9
    0
  38. Sitakalyani

    Question about a statement by Albert Einstein

    Aug 12, 2018 at 6:26 AM
    5
    248
    Replies: 5
    1
  39. David Day

    Ratio of Inductance between 2 Solenoids?

    Aug 11, 2018 at 9:53 PM
    3
    144
    Replies: 3
    1
  40. lordlarddallas

    Potetial Difference between center and point r

    Aug 11, 2018 at 4:50 PM
    1
    126
    Replies: 1
    0
  41. Krushnaraj Pandya

    Direction of the force on a dielectric slab while being inserted into a capacitor

    Aug 11, 2018 at 1:17 PM
    10
    290
    Replies: 10
    7
  42. Victim

    Capacitor problem with a beam balance -- balancing after changing the charge

    Aug 11, 2018 at 12:04 PM
    3
    198
    Replies: 3
    0
  43. Krushnaraj Pandya

    Analyzing a circuit with multiple batteries

    Aug 11, 2018 at 11:19 AM
    15
    238
    Replies: 15
    1
  44. Krushnaraj Pandya

    Changes in capacitor after dielectric inserted

    Aug 11, 2018 at 10:27 AM
    17
    167
    Replies: 17
    4
  45. Krushnaraj Pandya

    Capacitor system problem

    ... 2
    Aug 11, 2018 at 9:58 AM
    26
    229
    Replies: 26
    2
  46. PhysicsIsKillingMe

    Friction force on an inclined plane

    Aug 10, 2018
    3
    178
    Replies: 3
    0
  47. Cicicicici

    Direction of magnetic field experienced by wire

    Aug 10, 2018
    2
    120
    Replies: 2
    0
  48. Joon

    Circular duct problem

    Aug 10, 2018
    4
    239
    Replies: 4
    0
  49. barryj

    Calculation about virtual image

    Aug 10, 2018
    2
    124
    Replies: 2
    0
  50. HCverma

    In the circular motion below, what will be the velocity?

    Aug 10, 2018
    14
    386
    Replies: 14
    6
  51. Bob22314

    Replacing speed with friction in formula

    Aug 9, 2018
    9
    215
    Replies: 9
    2
  52. TaylorHoward21

    Force and motion

    Aug 9, 2018
    5
    284
    Replies: 5
    1
  53. Beth N

    Projectile Motion: time it takes for projectile to hit truck

    Aug 9, 2018
    15
    236
    Replies: 15
    9
  54. Timothy Teo

    Difference between Vav and Vrms

    Aug 9, 2018
    6
    127
    Replies: 6
    3
  55. TaylorHoward21

    Am I setting up this kinematic equation properly?

    Aug 9, 2018
    3
    123
    Replies: 3
    1
  56. salah22441

    Finding the acceleration of the center of mass

    Aug 9, 2018
    2
    90
    Replies: 2
    0
  57. MARX

    Kleppner:Mechanisc: 7.33 Grooved cone and mass

    Aug 8, 2018
    12
    225
    Replies: 12
    0
  58. Beth N

    Newton’s Law of Motions: tension forces in a pulley

    Aug 8, 2018
    4
    134
    Replies: 4
    1
  59. John Greger

    Fine-structure constants

    Aug 8, 2018
    5
    218
    Replies: 5
    0
  60. Krushnaraj Pandya

    Analyzing a circuit with 1 point earthed

    ... 2
    Aug 8, 2018
    28
    345
    Replies: 28
    4
  61. Krushnaraj Pandya

    Find the equivalent capacitance of the circuit

    Aug 8, 2018
    12
    231
    Replies: 12
    8
  62. olaney

    E-field generated by constant current in a circular loop

    Aug 7, 2018
    12
    191
    Replies: 12
    0
  63. Nemika

    Behaviour of an accelerating beam of electron.

    Aug 7, 2018
    10
    446
    Replies: 10
    4
  64. Krushnaraj Pandya

    Capacitance from plates

    Aug 7, 2018
    4
    103
    Replies: 4
    1
  65. alejandromeira

    Metal Stick that falls by gravity inside a magnetic field

    Aug 7, 2018
    16
    376
    Replies: 16
    8
  66. Krushnaraj Pandya

    Capacitor+work energy theorem problem

    Aug 7, 2018
    18
    333
    Replies: 18
    2
  67. David Day

    After how many time constants is capacitor energy 1/4?

    Aug 7, 2018
    1
    120
    Replies: 1
    1
  68. Tachyonprince

    Mean free path of ideal gases

    Aug 6, 2018
    3
    155
    Replies: 3
    0
  69. Krushnaraj Pandya

    Simple capacitance problem

    ... 2
    Aug 6, 2018
    28
    224
    Replies: 28
    2
  70. Krushnaraj Pandya

    Capacitance of spherical capacitor

    Aug 6, 2018
    12
    226
    Replies: 12
    3
  71. themotionsickphoton

    I am building a power-bank for a project, out of capacitors

    Aug 6, 2018
    14
    388
    Replies: 14
    1
  72. John Greger

    Identify spectral lines

    Aug 6, 2018
    6
    240
    Replies: 6
    0
  73. Avinash Verma

    Gauss's law problem.

    Aug 6, 2018
    7
    171
    Replies: 7
    1
  74. says

    Total Angular Momentum of an odd-parity shell-model state

    Aug 5, 2018
    1
    162
    Replies: 1
    0
  75. Krushnaraj Pandya

    Simple question regarding capacitors

    Aug 5, 2018
    2
    108
    Replies: 2
    1
  76. Joon

    Polytropic process question

    Aug 5, 2018
    6
    170
    Replies: 6
    1
  77. Joon

    Power generated by the steam turbine

    ... 2
    Aug 5, 2018
    20
    267
    Replies: 20
    3
  78. Krushnaraj Pandya

    Potential difference in uniform electric field

    Aug 5, 2018
    8
    159
    Replies: 8
    0
  79. Krushnaraj Pandya

    Principle of a capacitor

    Aug 5, 2018
    5
    143
    Replies: 5
    0
  80. Barnt

    Velocity of a hollow cylinder at the bottom of an incline

    Aug 4, 2018
    9
    172
    Replies: 9
    0
  81. says

    Calculate velocity of the fastest neutron inside a 96Mo nucl

    Aug 4, 2018
    5
    155
    Replies: 5
    0
  82. Krushnaraj Pandya

    Field inside a conductor

    Aug 4, 2018
    2
    126
    Replies: 2
    1
  83. Joon

    Simple coefficient of performance question

    Aug 4, 2018
    6
    189
    Replies: 6
    1
  84. baldbrain

    River-boat problem (Relative velocity)

    Aug 4, 2018
    9
    192
    Replies: 9
    0
  85. Krushnaraj Pandya

    Electric field and potential at vertex of cube

    Aug 4, 2018
    9
    200
    Replies: 9
    0
  86. flutrpooch

    Fluid in a syringe

    Aug 4, 2018
    11
    370
    Replies: 11
    2
  87. Vatsal Goyal

    Circular motion

    Aug 3, 2018
    11
    177
    Replies: 11
    0
  88. DannyDon

    Determining minimum speed?

    Aug 3, 2018
    5
    165
    Replies: 5
    1
  89. Erickly

    Rayleigh's Criterion + Moon (What am I doing wrong?)

    Aug 3, 2018
    18
    259
    Replies: 18
    8
  90. Erickly

    Wave optics: Interference

    Aug 3, 2018
    12
    172
    Replies: 12
    0
  91. MathError

    Problem about a rigid body pulled by a mass

    Aug 3, 2018
    11
    300
    Replies: 11
    1
  92. John Greger

    Estimate ionization energy

    Aug 3, 2018
    9
    225
    Replies: 9
    3
  93. Suradanai

    Can someone help me to calculate the velocity at Stack Tip?

    Aug 3, 2018
    5
    153
    Replies: 5
    2
  94. Joon

    Simple reversed heat engine problem

    Aug 3, 2018
    2
    125
    Replies: 2
    1
  95. MARX

    Kleppner Mechanics: Disk and coil spring

    Aug 2, 2018
    6
    215
    Replies: 6
    0
  96. Loro

    Entropy of mixing

    Aug 2, 2018
    17
    431
    Replies: 17
    0
  97. BrandonBerisford

    David Morin's Rope around a Pole example

    Aug 2, 2018
    3
    119
    Replies: 3
    1
  98. starstruck_

    Infinite chain of alternating charges (+/-)

    ... 2
    Aug 2, 2018
    29
    443
    Replies: 29
    2
  99. Pochen Liu

    Why don't voltages add up numerically in an LCR AC circuit?

    Aug 2, 2018
    5
    232
    Replies: 5
    1
  100. kristjan

    Initial speed of the proton?

    Aug 2, 2018
    2
    257
    Replies: 2
    0
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