Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Stopping a rod moving with constant omega
  • SampleLow
  • · Replies 13 ·
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13
Handling two SHMs in different directions
  • palaphys
  • · Replies 18 ·
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18
Sound in an Open Vertical Tube partially filled with Water
  • fjccommish
  • · Replies 4 ·
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4
Best Egg Drop Contest Shock Absorber?
  • bug
  • · Replies 1 ·
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1
Problem involving SHM and a collision
  • palaphys
  • · Replies 27 ·
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27
Calculate the velocity of the canoe relative to the water
  • waltssillyhat
  • · Replies 8 ·
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8
Amplitude of a stretched spring that is stretched further
  • MenchiKatsu
  • · Replies 6 ·
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6
Waves on a String Fixed at the Ends
  • fjccommish
  • · Replies 7 ·
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7
Electric Potential Energy of Point Charge Systems
  • flyonthewall
  • · Replies 2 ·
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2
Landing reusable booster rockets
  • paulb203
  • · Replies 35 ·
2
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35
Problem with the power of car
  • rickyw2777
  • · Replies 3 ·
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3
Tangential velocity of external satellite
  • jhonconnor
  • · Replies 7 ·
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7
Will my weather balloon work in the Stratosphere?
  • Max CR
  • · Replies 7 ·
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7
Angular momentum- rotating rod
  • palaphys
  • · Replies 17 ·
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17
Transverse mechanical waves in a steel wire
  • Brian_D
  • · Replies 10 ·
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10
Thermodynamics - Dryness fraction Equations
  • maserati1969
  • · Replies 1 ·
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1
Dryness fraction of saturated steam
  • maserati1969
  • · Replies 2 ·
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2
help whit problem of college admission exam
  • Camilo08642
  • · Replies 5 ·
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5
Loop equations for this battery-resistor circuit
  • eleking16
  • · Replies 48 ·
2
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48
Work done to insert a point charge 𝑞 at the center of a conducting sphere
  • songoku
  • · Replies 12 ·
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12
Understanding a math step in solving Schrödinger's equation for single particle in a box
  • zenterix
  • · Replies 8 ·
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8
Center of mass and momentum- A question about systems
  • palaphys
  • · Replies 25 ·
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25
Circle approximation of a wave pulse on a string or spring
  • Brian_D
  • · Replies 29 ·
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29
Calculating magnetic field outside a solenoid
  • Jesper12
  • · Replies 15 ·
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15
Aerodynamics: Optimization of an aircraft engine
  • dd5139
  • · Replies 2 ·
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2
I do not understand why the extra 2 factor is there (energy of 1D electron gas at zero temperature)
  • bluepilotg-2_07
  • · Replies 5 ·
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5
Rotating ring on a rough surface- but with a twist
  • palaphys
  • · Replies 151 ·
6
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151
Electric potential of nested spherical shells
  • songoku
  • · Replies 4 ·
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4
Another rotation problem -- Acceleration of a ring rolling on a surface
  • palaphys
  • · Replies 1 ·
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1
Why is it necessary to start this experiment with the water level at 400mL?
  • Aurelius120
  • · Replies 35 ·
2
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35
Correct statement about light transmitted and reflected by windscreen
  • songoku
  • · Replies 11 ·
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11
Force pulling on a string at an angle with a block at the other end
  • kekpillangok
  • · Replies 2 ·
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2
Confusion about friction in rotating ring
  • palaphys
  • · Replies 12 ·
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12
Problem n. 7 chapter 4 Eisberg Resnick "Quantum Physics"
  • baffetto59
  • · Replies 9 ·
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9
A block dropping onto a spring system
  • palaphys
  • · Replies 58 ·
2
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58
Paper 'helicopter' experiment - Adding Weight Decreases Flight Time?
  • Mahid
  • · Replies 20 ·
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20
When are reactive forces enough to support this body?
  • per persson
  • · Replies 14 ·
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14
Can A Vector Have Components Of Say Y or Z in the X-Hat Direction?
  • Ascendant0
  • · Replies 8 ·
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8
A problem about momentum and the elastic collision of two particles
  • Minming
  • · Replies 13 ·
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13
Identical Batteries in Parallel do not Draw Same Current, Non-Ideal?
  • BuddyBoy
  • · Replies 7 ·
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7
Homework assignment that I was able to solve using EDO, but need to use Laplace now
  • Diego
  • · Replies 5 ·
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5
Optimizing strength to weight in balsa wood deck arch truss bridge
  • Meep
  • · Replies 1 ·
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1
Displacement amplitude of the faintest sound detectable by a human ear
  • FranzDiCoccio
  • · Replies 28 ·
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28
Designing a speed bump given the maximum vertical wheel acceleration
  • Bling Fizikst
  • · Replies 18 ·
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18
How do you Calculate Ampacity of a Conductor Geometry?
  • BuddyBoy
  • · Replies 64 ·
3
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64
A little annoying doubt -- Initial vertical speed of a jumping flea
  • Clockclocle
  • · Replies 5 ·
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5
Calculate the Acceleration of this Car
  • dvkdcmfvifmceif123
  • · Replies 7 ·
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7
Two ropes pulling on a cylinder that is translating and rotating on a plane
  • lorenz0
  • · Replies 2 ·
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2
Optical path difference between two reflected rays
  • lorenz0
  • · Replies 4 ·
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4
Why is the Celsius symbol not placed on the Kelvin unit?
  • OMAR_ALQAM
  • · Replies 19 ·
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19
Comparing weights of balloons
  • Thamska
  • · Replies 80 ·
3
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80
projectile motion problem with no initial velocity given
  • jrm1508
  • · Replies 3 ·
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3
Calculate the Capacitance given the Charge and Potential Difference
  • member 757689
  • · Replies 1 ·
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1
How to solve this problem in sinusoidal motion? (Satellite orbiting the Earth)
  • Safinaz
  • · Replies 5 ·
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5
Kinematics in multiple frames
  • Bling Fizikst
  • · Replies 10 ·
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10
Clarify definition of measurement
  • Faraz0007
  • · Replies 6 ·
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6
Direction of oscillations of a polarised light wave
  • songoku
  • · Replies 12 ·
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12
Find the height of a lamp based on the velocities of projectiles
  • stabby_faris
  • · Replies 40 ·
2
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40
Velocity of a water jet exiting a water tank drain tube
  • WhiteyM
  • · Replies 5 ·
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5
Electric Field Flux Question
  • member 757689
  • · Replies 4 ·
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4
Static equilibrium | Uniform sphere on incline | Determining friction
  • I_Try_Math
  • · Replies 43 ·
2
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43
Energy Changes in Capacitor After Disconnecting from Battery
  • MatinSAR
  • · Replies 4 ·
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4
Entropy of a sealed room with an open-door refrigerator
  • techsingularity2042
  • · Replies 5 ·
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5
Diffraction pattern from a grating
  • techsingularity2042
  • · Replies 3 ·
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3
Question About Induced Currents in Three Different Coils
  • Lunar Manatee
  • · Replies 10 ·
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10
Is this question solvable by resolution of forces?
  • Physical_Fire
  • · Replies 22 ·
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22
Need my mind refreshed on geometry
  • ishigg
  • · Replies 9 ·
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9
Kinematics problem involving multiple frames
  • Bling Fizikst
  • · Replies 6 ·
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6
Why do water streams get thinner as they fall?
  • goleynik
  • · Replies 6 ·
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6
Differential Equation of a Pendulum
  • Tygra
  • · Replies 32 ·
2
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32
Time taken to slide down a circular path (with friction)
  • eddiezhang
  • · Replies 43 ·
2
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43
Block sliding on vertical track with friction (Solved problem)
  • kuruman
  • · Replies 4 ·
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4
Which of these rods are in equilibrium?
  • ymnoklan
  • · Replies 39 ·
2
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39
Uncertainties For Wave Packets
  • flyusx
  • · Replies 4 ·
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4
Separation of variables: Wave equation governing a string with fixed ends
  • jonny997
  • · Replies 8 ·
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8
Interpretation of Negative Time in Minkowski Diagram
  • techsingularity2042
  • · Replies 1 ·
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1
Order of events in a train traveling at v = 0.76c
  • techsingularity2042
  • · Replies 28 ·
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28
Physics Exam Preparation: General question about auxiliary quantity and linearization of a function in physics
  • Voidness
  • · Replies 27 ·
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27
Velocity vectors; arrow length
  • paulb203
  • · Replies 3 ·
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3
Electrical Circuits - Parallel vs. Series
  • BuddyBoy
  • · Replies 14 ·
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14
Frequency of pendulum in the presence of electric field
  • songoku
  • · Replies 16 ·
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16
Electrostatic force on a test charge by uniformly charged annular disc
  • YK0001
  • · Replies 1 ·
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1
Energy stores and transfer on a rollercoaster
  • Jigneshbharati
  • · Replies 22 ·
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22
Truck accelerating down a ramp
  • Dern
  • · Replies 10 ·
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10
Question about Momentum and torque
  • kozmosnak
  • · Replies 10 ·
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10
Spring scale tension
  • ymnoklan
  • · Replies 15 ·
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15
Torque acting on dipole
  • songoku
  • · Replies 28 ·
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28
Leakage of Air in a Spacecraft
  • flyusx
  • · Replies 16 ·
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16
Simulation of Elastic Collisions
  • MatinSAR
  • · Replies 41 ·
2
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41
Charge separation of O-H bond in water molecule?
  • songoku
  • · Replies 12 ·
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12
Resonant frequency of L - R||C circuit
  • phantomvommand
  • · Replies 21 ·
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21
Which one is a correct statement about oscillation?
  • songoku
  • · Replies 24 ·
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24
Why doesn’t my electric motor work?
  • grade11studentgoaat
  • · Replies 3 ·
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3
Scientific inference skill
  • prof Neuro mg T
  • · Replies 4 ·
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4
Find speed of CoM after collision between ball and "square structure"
  • songoku
  • · Replies 42 ·
2
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42
How to make a motor for an assignment
  • grade11studentgoaat
  • · Replies 6 ·
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6
Doubts on Diodes: Circuit Solving
  • Bling Fizikst
  • · Replies 10 ·
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10
Dimension Analysis -Turkey Cooking
  • S-Ragnork1729
  • · Replies 12 ·
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12
Finding oscillation of SHM of this rod, mass and spring
  • aftersloth2139
  • · Replies 11 ·
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11
Upside Down Paper-Glass Water Experiment
  • S-Ragnork1729
  • · Replies 3 ·
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3