Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Relativity Paradox: Solving for Different Observers in the Cloud and Ship
- Nick J Harris
- · Replies 8 ·
Double Slit Experiment, Observation Affects Reality
- Des242
- · Replies 2 ·
Twin spring system with a mass in between (X and Y direction)
- MrNewton
- · Replies 53 ·
A variable mass problem with friction
- Eitan Levy
- · Replies 2 ·
Why Is Momentum Conserved in a Variable Mass System Like a Sand-Laden Cart?
- Eitan Levy
- · Replies 5 ·
Reading of a voltmeter having resistance R across a resistance
- Shivang kohlii
- · Replies 3 ·
Understanding Centripetal and Centrifugal Force on a Rotating Platform
- Dianne Werner
- · Replies 9 ·
Friction problem involving a pulley
- issacnewton
- · Replies 10 ·
Finding the damping force for a critically damped oscillator
- issacnewton
- · Replies 2 ·
Railway/Cannon - Conservation of Momentum HW Problem
- jigsaw21
- · Replies 9 ·
Same pressure points , 2 fluids u shaped tube
- Mariog
- · Replies 3 ·
What are the key mistakes in approaching this work-energy principle problem?
- Radhika Ahuja
- · Replies 5 ·
What is the Minimum Distance of Masses After a Split in a Satellite System?
- Eitan Levy
- · Replies 8 ·
What's the use of density here?
- turtleGuy
- · Replies 7 ·
Why is the Stefan-Boltzman formula for this problem like this?
- s3a
- · Replies 10 ·
Pulley system, find the acceleration and tension
- Davidllerenav
- · Replies 40 ·
Statistics physics problem -- atom is in the ground state or excited state?
- Oliver321
- · Replies 7 ·
Inelastic 2D Collision with Vector Components
- JwdePhysics
- · Replies 7 ·
Impulse applied to a bouncing ball
- Np14
- · Replies 13 ·
Melde's Exp: Why Transverse & Longitudinal Arrangements Differ?
- TachyonLord
- · Replies 1 ·
Ice Skating conservation of momentum (conceptual problem)
- Physicscct
- · Replies 5 ·
Diving Board Torque with No Mass Given For the Diver
- jweica
- · Replies 6 ·
Relative Wind Problem (Modern Engineering Mathematics, 5th)
- SubZer0
- · Replies 3 ·
Circumference of Circle with Uncertainty
- ELLE_AW
- · Replies 3 ·
Space elevator minimum initial speed
- RiotRick
- · Replies 3 ·
Accelerations in a Three Mass Pulley System: How Are They Related?
- Mr Davis 97
- · Replies 24 ·
Calculating Uncertainty when Converting Time
- ELLE_AW
- · Replies 3 ·
Where is my mistake? (Pure rolling and center of mass)
- Eitan Levy
- · Replies 8 ·
Calculating resistances via a potentiometer
- Shivang kohlii
- · Replies 4 ·
Kinematic problem: velocity and stuff
- selssk
- · Replies 5 ·
How Does Thermal Expansion Affect the Movement of a Lever System?
- sp3sp2sp
- · Replies 24 ·
Will the 2 dimensional sphere rotate?
- PhysicS FAN
- · Replies 4 ·
Help w/ Circuit Theory: Complex Numbers & Voltage
- Toolkit
- · Replies 2 ·
Newton's Laws Homework question: Double incline mass problem
- NotSoRobot
- · Replies 4 ·
Calculate the magnitude and direction of the torque
- phb1762
- · Replies 1 ·
Tension and net torque in a cable
- ryley
- · Replies 10 ·
Why is my thinking incorrect? -- Block and spring driven by a motor
- ryley
- · Replies 7 ·
Time taken for pressure equalization between two tanks
- Raghav Seetharamu
- · Replies 3 ·
Conservation of momentum - trampoline
- Pottesur
- · Replies 5 ·
Calculate the acceleration due to gravity
- bnd_20191
- · Replies 2 ·
Density function, calculating the mass
- Robin04
- · Replies 9 ·
Finding the Voltage across a Resistor using the Node Voltage Method
- rugerts
- · Replies 2 ·
What are the steps for solving a circuit using node voltage analysis?
- rugerts
- · Replies 4 ·
Relationship between voltage, power and current
- Imtiaz Ahmad
- · Replies 28 ·
Optimal Path for Honeybee to Reach Honey Drop in Minimum Time - No Gravity
- PhysicsKT
- · Replies 5 ·
What's the least force we should apply?
- PhysicS FAN
- · Replies 4 ·
Help with a problem involving motion in two dimensions
- CVRIV
- · Replies 11 ·
Objects sliding on inclines without friction (connected by a pulley and rope)
- PhysicS FAN
- · Replies 10 ·
Calculate the sag (deflection) of a membrane
- dykuma
- · Replies 7 ·
Potential difference in a 2 disk system (Capacitor)
- Zack K
- · Replies 4 ·
Uniform Circular Motion, Find the Tension
- Hoophy
- · Replies 8 ·
Circular Motion With Constant Angular Acceleration
- Hoophy
- · Replies 3 ·
Voltage around a loop, half inside a capacitor and half outside
- RubinLicht
- · Replies 2 ·
What is the observed wavelength of the Hα line?
- Nat1234123
- · Replies 3 ·
Find the period of small oscillations (Pendulum, springs)
- castrodisastro
- · Replies 8 ·
Solving for the tangential force for a bead on a wire
- Mason Smith
- · Replies 1 ·
Sound Interference Problem -- Observer moving between two speakers
- jybe
- · Replies 3 ·
Infinite number of identical charges r=a2^n
- SherlockHolmie
- · Replies 1 ·
AP Physics C Momentum Problem: A dart launched horizonally by a spring gun
- Kush
- · Replies 22 ·
Find Velocity of Particle for System of Charges
- Klaus von Faust
- · Replies 13 ·
How Does Adding Masses Affect the Angular Velocity of a Rotating Cylinder?
- brotherbobby
- · Replies 12 ·
Interesting Magnetic Field Induction Problem
- Klaus von Faust
- · Replies 4 ·
Pulley question -- Two unequal masses hanging by a string
- BlackBearFCS
- · Replies 3 ·
What is the optimal angle for an ant to climb a wire and gutter?
- PhysicsKT
- · Replies 14 ·
Snell's law problem about a hemispherical glass ball
- issacnewton
- · Replies 9 ·
[Compton scattering] Solving for wavelength
- Rafiki
- · Replies 2 ·
Why is momentum conservation always true in a collision?
- Np14
- · Replies 4 ·
Measuring the resistance of a resistor
- sp3sp2sp
- · Replies 1 ·
Horizontally launched projectile
- Davidllerenav
- · Replies 16 ·
Work Check - Centripetal force - Finding Tension in a Rope
- Abood
- · Replies 8 ·
Question involving the conservation of momentum
- Mason Smith
- · Replies 4 ·
Challenging question about electromagnetic induction
- Naman Singh
- · Replies 9 ·
Number of collisions with a block
- Abhishek11235
- · Replies 6 ·
Time of closest approach between two particles
- Davidllerenav
- · Replies 42 ·
Electric Fields from Linear Charges
- Mark Zhu
- · Replies 7 ·
Phase Difference between Voltage and Current
- Sylvia
- · Replies 9 ·
Thermodynamics: P-V diagram question
- physics_pi_rate
- · Replies 2 ·
Determine the angular velocity as a function of the angle
- Davidllerenav
- · Replies 39 ·
Circular Motion Application Question
- Tak Mok
- · Replies 1 ·
The Importance of Understanding Different Formulas in Uniform Circular Motion
- paprika213
- · Replies 4 ·
Circular Motion Problem: Particle Velocity and Acceleration Calculation
- Davidllerenav
- · Replies 18 ·
How effective is Charles' Law in determining absolute zero?
- Foofistan
- · Replies 1 ·
Max Speed to Move from Point A to Point B
- Davidllerenav
- · Replies 53 ·
Sources of errors in a spectrometer experiment
- TachyonLord
- · Replies 8 ·
Need to find final Height, Equation not Working
- Lapse
- · Replies 5 ·
What is the magnetic field generated by these two particle beams?
- Anurag98
- · Replies 14 ·
Troubleshooting a Discrepancy in Atwood Cylinder Solution
- Abhishek11235
- · Replies 4 ·
Projectile Motion: Pitcher throwing a ball to a catcher
- ju456one
- · Replies 2 ·
How Does a Dropped Ball Affect the Temperature of Water?
- SINAN EXPERT
- · Replies 6 ·
What is the final V in the vertical direction?
- Lapse
- · Replies 3 ·
Applying Gauss' Law: Solving Electric Field Problems
- yohanes vianei
- · Replies 1 ·
A challenging capacitor problem
- Klaus von Faust
- · Replies 21 ·
-qEx for a vertical spring in a constant Electric field
- Albertgauss
- · Replies 5 ·
Spin Annhilation and Creator Operators Matrix Representation
- TheBigDig
- · Replies 2 ·
Pressure equalization between two tanks
- escape_velocity
- · Replies 20 ·
How Do You Calculate Resultant Force Vectors and Their Angles?
- rico22
- · Replies 4 ·
Need help with finding thermal and Kinetic energy
- Sherlock01
- · Replies 20 ·
Maximum Horizontal Force of Relativistic Point Charge
- QuantumDuck23
- · Replies 2 ·
Initial and Final Kinetic Energy
- James2911
- · Replies 1 ·
Correct statement about force between two charges
- songoku
- · Replies 10 ·