Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Calculating Work on an Inclined Plane
- cheerspens
- · Replies 1 ·
Conceptual center of mass question - No calculations
- crafty2288
- · Replies 4 ·
Binary Star Explosion: Calculating Total Energy and Period
- bon
- · Replies 3 ·
What is the actual focal length?
- argarg03
- · Replies 9 ·
Formula for water pressure, flow and power
- cens
- · Replies 2 ·
Potential Difference: Negative Potential Explained
- lha08
- · Replies 3 ·
Find Difference in Satellite Distances After Impulse
- bon
- · Replies 13 ·
Need help with this as soon as possible please (fluid flow in pipes)
- MTRX
- · Replies 2 ·
How to Solve Pulley and Normal Force Problems Using Newton's Laws
- starprincess
- · Replies 6 ·
Torque Pulley Problem: Calculating Angular Acceleration | Homework Solution"
- sonic91
- · Replies 2 ·
Calculate Mechanical Energy & Heights of a Falling Stone - Physics Homework Help
- Roro312
- · Replies 9 ·
Spring Constant and Oscillations -
- mparsons06
- · Replies 11 ·
Solving a Challenging Physics Problem: Need Help?
- Knight526806
- · Replies 1 ·
How Do You Calculate Absolute Pressure at a Depth Using Bubble Size Changes?
- J0hnnyD
- · Replies 2 ·
Power, the rate of energy transfer
- dbigtheory
- · Replies 21 ·
Calculating Mass of Iron and Aluminum in a Metal Object Using Thermal Energy
- dbigtheory
- · Replies 1 ·
Removing heat energy from a block of ice
- hover
- · Replies 7 ·
Calculating the Number of Gas Molecules in an Excellent Laboratory Vacuum
- noname1
- · Replies 4 ·
Find the final temperature of the sample.
- noname1
- · Replies 2 ·
Electrostatic potential energy in a circuit with and without a battery
- utdiscant
- · Replies 1 ·
Solving a Physics Problem: Impulse and Momentum
- pat666
- · Replies 1 ·
Problem in magnetic effects of current
- logearav
- · Replies 4 ·
Special relativity: find speed and kinetic energy
- k77i
- · Replies 4 ·
Diamond Lattice: Tetahedral Bond Angles & Direction Cosines
- FRANCLI
- · Replies 1 ·
What is the wavelength of the emitted light in the infinite well problem?
- Kawakaze
- · Replies 4 ·
Finding Req in parallel circuit
- Aeden
- · Replies 3 ·
Simplify the following circuit (all impedances)
- dphysics
- · Replies 3 ·
Speed and Momentum of a Beta Particle
- ihearyourecho
- · Replies 1 ·
Find the size of force acting on the body
- sese
- · Replies 2 ·
Uncertainty principle and bound states?
- michael2k100
- · Replies 1 ·
Kinmatic question involving differential equation
- gaobo9109
- · Replies 1 ·
Find Time to Reach Max Height for Kinematic Q w/ g,k,u Variables
- gaobo9109
- · Replies 2 ·
Energy to Increase Orbital Radius
- omegas
- · Replies 1 ·
Momentum Multiple Choice Question
- Procrastinate
- · Replies 1 ·
Pendulum and spring oscillation
- smhippe
- · Replies 1 ·
Simple rotational mechanics problem
- crybllrd
- · Replies 3 ·
Unspecified gas, preasure known, looking for number density.
- Buttons840
- · Replies 2 ·
Solving Schrodinger Equation for Y(x)=A Sin (x)=0
- ghostbuster25
- · Replies 7 ·
Using Magnetic Field to get Radius
- red99
- · Replies 1 ·
Period of Rotating Pendulum: 2.2m, 9.0cm, 4.5kg
- juggalomike
- · Replies 3 ·
Force of Gravity/Friction Question
- studen527
- · Replies 2 ·
Opposing spring oscillation with mass
- smhippe
- · Replies 1 ·
Distance between Points: Is This Triangle a Right Triangle?
- lampshader
- · Replies 6 ·
Solving F = MA Problem: Confirm Solution & Extend Problem
- Knight526806
- · Replies 2 ·
Solve New F=MA Problem - Attachment Included
- Knight526806
- · Replies 3 ·
Find Mass of Pulley in Atwood's Machine Homework
- Tanahagae
- · Replies 2 ·
How to Calculate Acceleration and Force in a Car
- cheerspens
- · Replies 3 ·
EM: accelerated charge and E field
- ladki6
- · Replies 2 ·
Tension in the strings (with diagram)
- AlphaRock
- · Replies 1 ·
Efficiency of Ramp Pulling: Friction vs. No Friction
- cheerspens
- · Replies 3 ·
How Thick is the Oil Layer for Strong Reflection of Green Light?
- Terraist
- · Replies 1 ·
How High Are the Stairs If Climbed in 25 Seconds with 95 Watts of Power?
- Brittykitty
- · Replies 1 ·
How Do You Calculate Frictional Forces on a Car on an Incline?
- bbhoh44
- · Replies 2 ·
Grade 11 Physics: Solving for Distance with Friction, Energy, and Variables
- Felicity26
- · Replies 10 ·
Sketching the Potential of a Spherical Shell with Uniformly Distributed Charge
- singinglupine
- · Replies 9 ·
General physics electrostatics problem
- fionashrek
- · Replies 1 ·
Differential Amplifier: Calculating Common Mode Gain and Rejection Ratio
- yg2010
- · Replies 2 ·
Thermal Efficiency of a power plant
- jalamb90
- · Replies 1 ·
Optics reflection/refraction problem
- raindrops
- · Replies 2 ·
Calculating Torque on a Pulley: Simple Theory and Homework Practice
- Hockeystar
- · Replies 2 ·
Resolving Vector W: Tips & Tricks for Uniform Circular Motion
- sphyics
- · Replies 7 ·
Period of a Pendulum and moment of inertia
- Quincy
- · Replies 5 ·
How to Calculate Velocity and Distance for Block on Slab with Friction
- Beckaze
- · Replies 2 ·
Questions regarding applied waves?
- zell_D
- · Replies 2 ·
Calculating the Resulting Speed of a Student on a Turntable
- ernay
- · Replies 1 ·
Thermo - Heat Engines, Heat Pumps
- brendan714
- · Replies 10 ·
What input work is required for this machine
- hisbul
- · Replies 1 ·
How Do You Calculate Carrier Concentration in Doped Silicon?
- Master J
- · Replies 11 ·
How to Calculate dS/dU for a Solid in Thermal Equilibrium?
- sarahaha288
- · Replies 2 ·
Solv. Conservation of Energy & Angular Mom. for Mass M System
- bon
- · Replies 11 ·
Basic Forces- Just seeking a simple answer
- Punch
- · Replies 3 ·
Figuring out the kinetic energy of springs with mass
- gunnerone
- · Replies 1 ·
Simple resistance question on D.C. Circuits
- Punch
- · Replies 13 ·
Speedboat Acceleration: 3.2m/s in 2.05 secs
- mimi_123
- · Replies 1 ·
What is the change in kinetic energy of the cart during the move
- gaobo9109
- · Replies 5 ·
Electric Force on Point Charges
- joemama69
- · Replies 7 ·
How Does a Multi-Dielectric Parallel Plate Capacitor Calculate Its Capacitance?
- meth_90
- · Replies 1 ·
How Does Mercury Expansion in a Thermometer Relate to Temperature Changes?
- Je m'appelle
- · Replies 3 ·
Linear Momentum - Person on a Plank on a frictionless surface
- crafty2288
- · Replies 5 ·
Find the equation of motion for a fixed particle in a wave
- TheTourist
- · Replies 1 ·
Finding the Coefficient of Static Friction for a Cube
- COKEDUDE
- · Replies 1 ·
Where Did I Go Wrong in This Conservation of Energy Problem?
- gaobo9109
- · Replies 2 ·
Tension (Conceptual Misunderstanding?)
- Glenn900
- · Replies 1 ·
Use dimensional analysis to show that increase in g due to lead
- cloudone
- · Replies 2 ·
Comparing Escape Energies of Earth, Moon, and Jupiter
- popo902
- · Replies 1 ·
Annie's Wagon: Dragging a Crate with 1200 N of Friction
- starprincess
- · Replies 1 ·
Energy density of photons and matter
- indie452
- · Replies 14 ·
Plastic Deformation: Calculating Total Work Done
- look416
- · Replies 2 ·
Finding mass enclosed my a stars radius from center.
- seto6
- · Replies 2 ·
How Is Mutual Inductance Calculated Between Coaxial Solenoids?
- McLaren Rulez
- · Replies 4 ·
How Do You Calculate the Optimal Swimming Angle to Cross a River Quickly?
- koosy
- · Replies 6 ·
Solving Momentum & Conservation of Energy for Elastic Collision
- pat666
- · Replies 2 ·
Pendulum with horizontal spring
- mountainbiker
- · Replies 1 ·
What is the mass of air in a hot air balloon with these conditions?
- jgoff14
- · Replies 3 ·
Designing a Circuit with Series and Parallel Components
- xokekxo
- · Replies 2 ·
Projectile Escape Trajectory: Solving for Earth's Radius at Maximum Height
- popo902
- · Replies 1 ·
Angular Acceleration without Angular Speed.
- Awkwardness
- · Replies 6 ·
Calculating Slit Width from Diffraction Pattern
- Octoshark
- · Replies 4 ·
What is the Electric Field and Potential of a Non-Uniformly Charged Sphere?
- joemama69
- · Replies 10 ·