Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Systems with Varying Mass (Momentum)
- Arman777
- · Replies 10 ·
Mass on a Rotating Parabolic Dish
- RoyalFlush100
- · Replies 28 ·
Two blocks collide (Momentum-Energy conservation)
- Arman777
- · Replies 7 ·
Electric Flux confusion and help
- jlmccart03
- · Replies 8 ·
Calculating error in pendulum motion
- asadpasat
- · Replies 10 ·
The potential difference across an inductor
- Asmaa Mohammad
- · Replies 9 ·
Why is there a non-physical solution to this problem? (quadratic equation)
- pixel
- · Replies 7 ·
Dynamics Question -- packages discharged from a conveyor belt
- RoyalFlush100
- · Replies 7 ·
A Box is suspended by two strings, what is the tension?
- EthanVandals
- · Replies 2 ·
Finding resistance of single resistor
- gungo
- · Replies 2 ·
Verification of the capacitance of a capacitor
- Samar A
- · Replies 3 ·
What is the force of a jet engine and how can I calculate it?
- Maximilian Popelier
- · Replies 6 ·
What Is the Minimum Height for a Ball to Complete a Loop in Physics?
- mamadou
- · Replies 24 ·
What is the velocity of a falling object with air resistance?
- Antony Jose
- · Replies 11 ·
Double Slit experiment separation
- Noriko Kamachi
- · Replies 3 ·
Final Velocity of Positron through Potential Difference
- jerronimo3000
- · Replies 15 ·
Finding the curl of velocity in spherical coordinates
- John004
- · Replies 3 ·
Coulomb's law; vector form problem
- Dogger
- · Replies 1 ·
Special Relativity: Time Dilation Prob
- ChrisJ
- · Replies 2 ·
Absolute temperature for average translational kinetic energ
- rsatchel
- · Replies 3 ·
Simple harmonic motion displacement equation confusion
- randomgamernerd
- · Replies 8 ·
Where is wrong in this proof for rotational inertia ?
- Duke Le
- · Replies 8 ·
Finding Angular Velocity of Pulley with Rope and Mass
- DaniV
- · Replies 3 ·
Understanding Supercritical Flow: Q^2/g^1/3
- fonseh
- · Replies 1 ·
Electrostatics Line Charge question
- grandpa2390
- · Replies 5 ·
Current and resistance of wire heating up water
- Shelby8
- · Replies 4 ·
Can I Assume Yi is 0m in Projectile Motion Calculations?
- EinsteinApple
- · Replies 4 ·
Finding acceleration ratio for identical forces on different masses
- EthanVandals
- · Replies 4 ·
Solve Mass of M Problem - Trolley Question (3.0N)
- Angiek
- · Replies 1 ·
Uniform flow vs non-uniform flow in fluid
- fonseh
- · Replies 1 ·
[PoM] Most intense line of HCl molecule
- BRN
- · Replies 16 ·
Special Relativity (time/length)
- Nick Jarvis
- · Replies 26 ·
What is the impulse on the ball from the string?
- Arman777
- · Replies 5 ·
Electric Potential at Center of Sphere
- lightofthemoon
- · Replies 8 ·
Calculating the force between two electrons in a wire
- helixkirby
- · Replies 8 ·
Thermodynamics Work from pressure
- Logan McEntire
- · Replies 4 ·
Angular Frequency of a Piston with Ideal Gas
- phys3107_
- · Replies 12 ·
Finding velocity components of a charge leaving spectrometer
- trevorsternberg
- · Replies 8 ·
Block compressing spring with friction
- Arman777
- · Replies 23 ·
Normal and tangential components of acceleration
- zachdr1
- · Replies 21 ·
A question about wave motion and beat frequency
- harini07
- · Replies 43 ·
Work Question (Pulling a chain on the Moon)
- Arman777
- · Replies 11 ·
Building a wall to reduce maximum collision force
- axutio
- · Replies 5 ·
Is my textbook wrong about velocity/displacement vectors?
- z_Positron
- · Replies 12 ·
Absorbing an electromagnetic wave
- czesio246
- · Replies 8 ·
Work-Energy Conservation Question
- Arman777
- · Replies 12 ·
Hooke's law and wave velocity related problem
- harini07
- · Replies 12 ·
Impulse applied to a disk at the end of a pole
- srecko97
- · Replies 5 ·
Help with this problem about error margins please
- Tsunnnami
- · Replies 17 ·
Mechanical Energy Problem/non-conservative forces
- fuvest
- · Replies 1 ·
(Nonlinear Dynamics)Find a Mechanical Analog dx/dt=sin(x).
- Hariraumurthy
- · Replies 5 ·
Kinematic body velocity Question
- Arman777
- · Replies 17 ·
Calculate Efficiency of Motor Lifting 0.050kg Block at 0.40m/s
- IDK10
- · Replies 36 ·
Two moments around a point question
- IDK10
- · Replies 15 ·
How can I understand wave graph conversion better?
- riceking95
- · Replies 2 ·
Kinematic Equations Problem: Toy cars on adjacent tracks
- dsfrankl
- · Replies 2 ·
How Can the Spring Extension Be Determined Using the Lagrangian Method?
- albertrichardf
- · Replies 1 ·
Finding the derivative of the radial vector r
- zachdr1
- · Replies 1 ·
Shining light on a retreating object
- MackBlanch
- · Replies 1 ·
Capacitance and induced charges
- WWCY
- · Replies 14 ·
Relative Velocity of Object C to Object A = 10 m/s
- nguyensteve
- · Replies 9 ·
Torque Transfer Through Linkages/Arms
- Bisher Deirki
- · Replies 1 ·
Young's Modulus Brass Wire Question
- gspsaku
- · Replies 3 ·
Diffraction grating problem involving Snell's Law
- Sarah Hallsway
- · Replies 3 ·
Magnetic force on electron in 0.0200 T field
- LionLieOn
- · Replies 5 ·
Pendulum Swinging Speeds: Solving for Initial Velocity and Angle
- Arman777
- · Replies 23 ·
Projected motion/trajectory question [EASY]
- ujellytek
- · Replies 5 ·
Effects of capacitors on potential difference
- nagyn
- · Replies 7 ·
What is the reason we don't "see" the Universe's expansion?
- MBBphys
- · Replies 2 ·
Calculating Two Unknown Charges from a Tripole
- Ryan Sandoval
- · Replies 3 ·
Determine the frictional force
- joelm
- · Replies 13 ·
Calculating Net Electric Field for a Charged Arc
- Jrlinton
- · Replies 9 ·
Why is the separation vector this (electrostatics):
- grandpa2390
- · Replies 8 ·
Kinematics, deriving equations.
- iPhotonHQ
- · Replies 3 ·
Net Electric Field Homework: Find Ea, Eb, and Enetx
- Jrlinton
- · Replies 4 ·
Potential of Concentric Cylindrical Insulator and Conducting
- hashbrowns808
- · Replies 5 ·
Notation Confusion: What Does $$C^+,C^{++}$$ Mean?
- Taylor_1989
- · Replies 2 ·
"How Fr=Ialpha Works in a Pulley w/ Mass
- JiggaMan
- · Replies 4 ·
Electric Field diagram question
- Samuel1321
- · Replies 1 ·
Finding magnitude and direction of net force on a dipole.
- jlmccart03
- · Replies 4 ·
Relative Acceleration - Particle and Wedge
- Edward_C
- · Replies 24 ·
What is the speed of the shadow on the wall when a horse runs in a circle?
- acko
- · Replies 6 ·
Magnitude of electric flux through a sphere?
- jlmccart03
- · Replies 5 ·
What Is the Frequency of Tuning Fork B When Tuned with Wax If A Is 212 Hz?
- harini07
- · Replies 22 ·
Double slit problem with glass block
- Sarah Hallsway
- · Replies 2 ·
Calculating Rock Speed on Impact from 10m
- Ugnius
- · Replies 12 ·
How Does Friction Affect the Acceleration and Tension in a Two-Block System?
- dkajsdk
- · Replies 9 ·
Ball Doing a Loop Min Kin Energy: Find Angle θ
- Cepterus
- · Replies 7 ·
Calculating work done by a force?
- chrismeng
- · Replies 3 ·
Is the Friction Force Affected by an Inclined Force?
- Alex126
- · Replies 9 ·
Thermodynamics p-v cycle problem
- WrongMan
- · Replies 12 ·
Calculating electrostatic force on particles
- Jrlinton
- · Replies 5 ·
Contact Forces & Acceleration: Solving for a and x after t seconds
- Alex126
- · Replies 6 ·
Calculating Electric Field Using Coulomb's Law
- Jrlinton
- · Replies 3 ·
How Does Young's Modulus Relate to Spring Constants in Motion Equations?
- patrickmoloney
- · Replies 3 ·
How Many Excess Electrons Are on a Charged Rod with Nonuniform Density?
- Jrlinton
- · Replies 3 ·
Gravitational Potential Energy-Work (ΔU) Question
- Arman777
- · Replies 4 ·
Calculating the average resistive force exerted
- JudgeA
- · Replies 7 ·
Number of Different resonances in a closed Box
- Marcus95
- · Replies 6 ·
When is the vertical displacement negative in projectile motion equations?
- totomyl
- · Replies 4 ·