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Introductory Physics Homework Help

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  1. micromass

    Guidelines for students and helpers

    Sep 23, 2014
    2
    44,922
    Replies: 2
    9
  2. Mark44

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

    May 10, 2014
    0
    17,689
    Replies: 0
    6
  3. Doc Al

    Introductory Physics Formulary

    Mar 17, 2012
    6
    120,396
    Replies: 6
    18
  1. zehkari

    Error Calculation on Diffraction Grating

    Dec 9, 2018 at 9:39 PM
    5
    172
    Replies: 5
    0
  2. SchroedingersLion

    Steiner's theorem

    Dec 9, 2018 at 4:25 PM
    11
    203
    Replies: 11
    2
  3. vysero

    Magnetic field at a point due to a line of charge

    Dec 9, 2018 at 4:21 PM
    7
    310
    Replies: 7
    1
  4. harujina

    Energy Efficiency: Input & Output (Work/Energy)

    Dec 9, 2018 at 3:15 PM
    6
    2,927
    Replies: 6
    5
  5. Selene0001

    What happens to the current in a loop when a magnet approach

    Dec 9, 2018 at 2:03 PM
    6
    289
    Replies: 6
    0
  6. Haddon

    Calculating the magnitude of an electric field.

    Dec 9, 2018 at 1:51 PM
    9
    313
    Replies: 9
    1
  7. mr1709

    projectile motion problem

    Dec 9, 2018 at 1:16 PM
    1
    149
    Replies: 1
    1
  8. Ennio

    Solution sixth grade equation

    N/A
    –
    –
    Replies: –
  9. Arman777

    Finding the Wavefunction for Tunneling,with tunnel lenght L

    Dec 9, 2018 at 1:40 AM
    6
    263
    Replies: 6
    1
  10. Apashanka

    Quantum energy of a particle in 2 dim space

    N/A
    –
    –
    Replies: –
  11. Jenny Physics

    Minimum possible period

    Dec 8, 2018 at 8:33 PM
    15
    280
    Replies: 15
    12
  12. mr1709

    Banked Road Physics Problem

    Dec 8, 2018 at 8:17 PM
    5
    245
    Replies: 5
    0
  13. Himanshu Singh

    Calculating the final velocity of a simple electric train

    ... 2 3
    Dec 8, 2018 at 6:51 PM
    49
    1,384
    Replies: 49
    10
  14. Taylor_1989

    reference frames and Galilean transformation

    Dec 8, 2018 at 2:17 PM
    10
    218
    Replies: 10
    0
  15. octu

    Impulse and Momentum: Ball and cart connected by cord

    Dec 8, 2018 at 1:31 PM
    4
    287
    Replies: 4
    1
  16. chef99

    Tension force and acceleration Problem

    Dec 8, 2018 at 1:23 PM
    1
    167
    Replies: 1
    0
  17. TishBass

    Electric field of a non-conducting sphere

    Dec 8, 2018 at 1:13 PM
    1
    179
    Replies: 1
    0
  18. TishBass

    Charge Density Expression

    Dec 8, 2018 at 10:59 AM
    1
    150
    Replies: 1
    0
  19. subhradeep mahata

    Velocity of image in plane mirror

    Dec 8, 2018 at 9:21 AM
    5
    216
    Replies: 5
    1
  20. LordOfCinders

    Calculating the wavelength of a surface wave after impact

    Dec 8, 2018 at 7:06 AM
    0
    168
    Replies: 0
    0
  21. stoky

    Fill an empty bottle with R-134a

    Dec 7, 2018 at 2:00 PM
    1
    182
    Replies: 1
    0
  22. rugerts

    LRC Series Circuit Critical Damping

    Dec 7, 2018 at 12:29 PM
    5
    239
    Replies: 5
    0
  23. OierL

    What torque must I apply?

    Dec 7, 2018 at 11:50 AM
    5
    179
    Replies: 5
    0
  24. axer

    Pressure of blood in an artery

    Dec 7, 2018 at 11:04 AM
    1
    167
    Replies: 1
    0
  25. rugerts

    Work Done on Charges by a Capacitor and an Inductor

    Dec 7, 2018 at 10:26 AM
    8
    291
    Replies: 8
    0
  26. SwizzFizzicks

    What can I investigate regarding the mechanics of bikes?

    Dec 7, 2018 at 9:47 AM
    17
    1,173
    Replies: 17
    1
  27. fight_club_alum

    Find the angular speed?

    Dec 7, 2018 at 8:50 AM
    8
    195
    Replies: 8
    0
  28. subhradeep mahata

    Magnetic Induction

    Dec 7, 2018 at 4:50 AM
    4
    179
    Replies: 4
    3
  29. eri139

    Buoyancy Problem

    Dec 6, 2018 at 10:59 PM
    5
    275
    Replies: 5
    5
  30. x24759

    Coupled oscillator: 2 masses and 3 different springs

    Dec 6, 2018 at 9:49 PM
    12
    844
    Replies: 12
    0
  31. jna

    Determine the friction force in a stacked block scenario

    ... 2
    Dec 6, 2018 at 3:31 PM
    23
    353
    Replies: 23
    2
  32. Benjamin Fogiel

    A rocket burns out at an altitude h above the Earth's surface

    Dec 6, 2018 at 2:11 PM
    2
    177
    Replies: 2
    0
  33. Alex Katko

    Calculate the natural circular frequency ωn of the system

    Dec 6, 2018 at 1:08 PM
    10
    370
    Replies: 10
    0
  34. velvetmist

    Finding the movement equation (non intertial system)

    Dec 6, 2018 at 7:54 AM
    1
    237
    Replies: 1
    0
  35. Raghav Gupta

    Calculating force of water coming out

    Dec 6, 2018 at 7:12 AM
    11
    1,070
    Replies: 11
    5
  36. Physics Person

    Finding the mass of a ball and a rod using torque

    Dec 6, 2018 at 5:54 AM
    8
    215
    Replies: 8
    1
  37. CyclicCircle

    Circular Constant Acceleration Formula

    Dec 6, 2018 at 1:53 AM
    4
    191
    Replies: 4
    2
  38. Boltzman Oscillation

    How would I perform this surface integral?

    Dec 6, 2018 at 1:05 AM
    7
    176
    Replies: 7
    2
  39. KMconcordia

    Problems calculating New Moment of Inertia

    Dec 5, 2018 at 9:58 PM
    5
    135
    Replies: 5
    1
  40. Physics Person

    Slingshot Projectile Motion

    Dec 5, 2018 at 9:08 PM
    5
    174
    Replies: 5
    0
  41. Physics Person

    Kinetic Energy & Momentum of a Ball released from Spring

    Dec 5, 2018 at 8:40 PM
    6
    203
    Replies: 6
    0
  42. octu

    Three mass Atwood Machine

    Dec 5, 2018 at 8:37 PM
    1
    138
    Replies: 1
    1
  43. Logan Batson

    How would I solve this Mixed Circuit?

    Dec 5, 2018 at 8:30 PM
    8
    174
    Replies: 8
    0
  44. LuigiAM

    Kinetic energy of rotation and parallel axis theorem problem

    Dec 5, 2018 at 7:11 PM
    11
    613
    Replies: 11
    1
  45. NS1

    Voltage drop in a metal

    N/A
    –
    –
    Replies: –
  46. JessicaHelena

    Speed at the top of an elliptical roller coaster loop

    Dec 5, 2018 at 5:03 PM
    4
    182
    Replies: 4
    3
  47. Taylan

    Kinetic energy & Conservation of energy

    Dec 5, 2018 at 4:40 PM
    17
    289
    Replies: 17
    4
  48. Poetria

    Air pressure - units

    Dec 5, 2018 at 3:43 PM
    7
    123
    Replies: 7
    4
  49. Cocoleia

    Power loss in a transmission line

    Dec 5, 2018 at 3:27 PM
    4
    446
    Replies: 4
    0
  50. Nate Stevens

    How to break up kinetic energy for circular motion?

    Dec 5, 2018 at 2:57 PM
    4
    249
    Replies: 4
    0
  51. Jenny Physics

    Maximum and minimum speeds in a moving cube

    ... 2
    Dec 5, 2018 at 12:09 PM
    20
    329
    Replies: 20
    13
  52. MatsNorway

    Stability - calculations taken for granted in books

    Dec 5, 2018 at 9:47 AM
    0
    163
    Replies: 0
    1
  53. Apashanka

    Reflection of EM wave

    Dec 5, 2018 at 12:26 AM
    13
    317
    Replies: 13
    2
  54. John3509

    Hill's law (muscle contraction speed) -- Calculations when lifting different weights

    Dec 4, 2018 at 8:02 PM
    1
    307
    Replies: 1
    1
  55. rugerts

    Average Pressure Radiation on Perfectly Absorbing Surface

    Dec 4, 2018 at 7:40 PM
    6
    428
    Replies: 6
    1
  56. Jorgen1224

    Determine the period of small oscillations

    Dec 4, 2018 at 7:37 PM
    11
    523
    Replies: 11
    1
  57. cookiemnstr510510

    Force needed to move a conducting bar on a wire U-loop in a magnetic field

    Dec 4, 2018 at 5:56 PM
    3
    297
    Replies: 3
    3
  58. JohnnyS

    Angular Velocity Problem — a Piston and a Crank

    Dec 4, 2018 at 1:17 PM
    7
    530
    Replies: 7
    1
  59. Yellowkies_3275

    Circular Motion help

    Dec 4, 2018 at 6:57 AM
    9
    327
    Replies: 9
    1
  60. Penguin98

    GPS question, unanswered on PS

    Dec 4, 2018 at 4:26 AM
    2
    309
    Replies: 2
    1
  61. Wombats

    Intensity of Interference Pattern

    Dec 3, 2018
    7
    215
    Replies: 7
    4
  62. Volta

    A few questions concerning voltage, current and resistance

    Dec 3, 2018
    5
    397
    Replies: 5
    1
  63. Howard Fox

    Equation for sum of torques on a ladder and minimum angle

    Dec 3, 2018
    1
    159
    Replies: 1
    0
  64. Kenny555

    Mass and spring on an inclined plane

    Dec 3, 2018
    2
    242
    Replies: 2
    0
  65. Penguin98

    Interference question

    Dec 3, 2018
    2
    262
    Replies: 2
    0
  66. Penguin98

    The thickness of glass and the longest wavelength

    Dec 3, 2018
    1
    252
    Replies: 1
    0
  67. EastWindBreaks

    Why does this solution assume it's a steady-flow system?

    Dec 3, 2018
    6
    562
    Replies: 6
    3
  68. Setareh7796

    The time for pressure to build up

    Dec 3, 2018
    4
    357
    Replies: 4
    0
  69. mikelison womack

    How do you find the magnitude of acceleration?

    ... 2
    Dec 2, 2018
    24
    329
    Replies: 24
    2
  70. michealyap

    Thermodynamics - water vapour cycle

    ... 2 3
    Dec 2, 2018
    44
    943
    Replies: 44
    2
  71. Binder12345

    Maximum of exponential function

    Dec 2, 2018
    9
    216
    Replies: 9
    4
  72. neon495

    How to find the aceleración and the rope forcé Fs?

    Dec 2, 2018
    2
    241
    Replies: 2
    0
  73. Allen Montgomery

    Calculating surface tension with the Capillary Equation

    ... 2
    Dec 2, 2018
    29
    476
    Replies: 29
    1
  74. titansarus

    Atwood machine with variable mass

    Dec 2, 2018
    7
    337
    Replies: 7
    3
  75. timetraveller123

    Faraday's law -- circular loop with a triangle

    ... 4 5 6
    Dec 2, 2018
    100
    5,803
    Replies: 100
    35
  76. GoCubs12

    3 Springs and 2 Masses

    Dec 2, 2018
    19
    348
    Replies: 19
    0
  77. keroberous

    Conceptual Issue RE: electric potential difference

    Dec 2, 2018
    1
    147
    Replies: 1
    0
  78. Chris Michos

    How can we determine the thrust generated?

    Dec 2, 2018
    3
    240
    Replies: 3
    0
  79. EastWindBreaks

    Do we assume the mixing chamber has an outlet?

    Dec 2, 2018
    3
    179
    Replies: 3
    2
  80. Bilal Rajab Abbasi

    Projectile motion problem, given the KE at the top of the parabolic arc

    Dec 2, 2018
    7
    273
    Replies: 7
    5
  81. Aaryan34532

    Some motion graph questions

    Dec 1, 2018
    2
    219
    Replies: 2
    0
  82. Aaryan34532

    Speed of ball vs Acceleration of the ball?

    Dec 1, 2018
    4
    167
    Replies: 4
    0
  83. physics_cosmos

    Dynamics of a string coupled pendulum

    Dec 1, 2018
    5
    295
    Replies: 5
    0
  84. physicshelppls

    Tarzan Swing

    Dec 1, 2018
    3
    148
    Replies: 3
    0
  85. cookiemnstr510510

    Hall Effect

    Dec 1, 2018
    1
    143
    Replies: 1
    1
  86. Dreebs

    Heat flow in and out of a cabaret

    Dec 1, 2018
    7
    345
    Replies: 7
    5
  87. HazyMan

    Dividing 480/(-1.6x10^(-19))

    ... 2
    Dec 1, 2018
    31
    560
    Replies: 31
    7
  88. Aaryan34532

    Why is the work zero here?

    Dec 1, 2018
    6
    548
    Replies: 6
    4
  89. Aaryan34532

    Efficiency of an Electric motor pulling a truck up an inclined plane

    Dec 1, 2018
    6
    237
    Replies: 6
    1
  90. Ivan Hu

    Electric Field due to dipole - solution check

    Nov 30, 2018
    7
    295
    Replies: 7
    1
  91. Protium_H1

    How to find the normal force of a car jack lifting a car

    Nov 30, 2018
    7
    443
    Replies: 7
    5
  92. Nat1234123

    How to find the minimum angular resolution?

    Nov 30, 2018
    3
    234
    Replies: 3
    0
  93. WhiteWolf98

    Poisson's Ratio

    Nov 30, 2018
    6
    370
    Replies: 6
    4
  94. Akash47

    Block at rest on an inclined surface

    ... 2
    Nov 30, 2018
    36
    656
    Replies: 36
    4
  95. songoku

    Correct statement about internal energy

    Nov 30, 2018
    15
    465
    Replies: 15
    2
  96. Dreebs

    Energy Efficient AC unit by returning air to the building

    Nov 30, 2018
    1
    217
    Replies: 1
    0
  97. Coderhk

    Direction of Normal Force

    Nov 29, 2018
    5
    242
    Replies: 5
    0
  98. Celso

    Induced EMF — generator coil area calculation

    Nov 29, 2018
    4
    264
    Replies: 4
    7
  99. Arsana

    Physics — Net work on a box being pulled…

    Nov 29, 2018
    6
    312
    Replies: 6
    0
  100. Keeeen

    Calculating controller gain in a feedback loop

    Nov 29, 2018
    14
    254
    Replies: 14
    3
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