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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Solve Vertical Circles Problem: Find Roller Coaster Speed
- chmilne
- · Replies 6 ·
Calculating Int. Forces: Why the Difference?
- asdf1
- · Replies 2 ·
Max Speed & Acceleration for Climbing Rope
- asdf1
- · Replies 3 ·
Doppler effect ambulance problem
- mikejones2000
- · Replies 2 ·
Sources of musical sound problem
- mikejones2000
- · Replies 1 ·
How Does Electron Acceleration Affect Photon Frequency and EM Wave Spectrum?
- Sheyr
- · Replies 1 ·
Find Frequency of Spring with Mass & Length Connected to Rigid Wall
- NotMrX
- · Replies 2 ·
The Physics of Tension in a Phone Cord
- PhysicsHatesMe01
- · Replies 6 ·
Vacuum Impedance: Physical Origin Explained
- Kolahal Bhattacharya
- · Replies 1 ·
Electric field due to || CONDUCTING plates
- eisbrecher
- · Replies 2 ·
Understanding Circular Motion: Common Misconceptions and Clarifications
- Delzac
- · Replies 19 ·
Help -Pivoting Rod about center- Me
- ano327
- · Replies 2 ·
Pressure applied to a completely enclosed fluid
- KingTutATL
- · Replies 6 ·
How Does a Spring's Work Relate to Frictional Forces in Motion?
- gagga5
- · Replies 1 ·
Why Do Equivalent Formulas for Radial Acceleration Yield Different Results?
- webren
- · Replies 6 ·
Find value of resistance to get max power in circuit
- satishinamdar
- · Replies 7 ·
Is it easier to push a lawnmover or pull it?
- konichiwa2x
- · Replies 18 ·
A pulley and a wedge questions.
- MathematicalPhysicist
- · Replies 1 ·
Solving Dissipating Charge Physics Problem
- Saketh
- · Replies 3 ·
Calculate Electricity Flow with Two Conductors of Different Diameters
- satishinamdar
- · Replies 11 ·
Force F for Balanced Masses M2, M3 on Block M1
- Kolahal Bhattacharya
- · Replies 3 ·
TWO questions Distance to exp. 120dB AND Depth of Well
- FelicitaH
- · Replies 3 ·
Radiated power, what does this even mean?
- ness9660
- · Replies 9 ·
How Does the Doppler Effect Change the Sound Frequency of a Passing Airplane?
- PhysicsHatesMe01
- · Replies 2 ·
Optimizing Boat Frequency: Eastward vs. Westward Waves
- FelicitaH
- · Replies 7 ·
Speed of sound/Dectecting insects
- FelicitaH
- · Replies 4 ·
What is the correct force exerted by the seat in a pulley and force problem?
- kristen151027
- · Replies 2 ·
Solve Staircase Projectile Problem: Find the First Step Hit
- asdf1
- · Replies 7 ·
(projectile motion) calculation problem
- asdf1
- · Replies 11 ·
Young's Double Slit vs. Diffraction grating
- User Name
- · Replies 1 ·
What Are the Key Physics Concepts in Top Gun's Flight Scenes?
- DownSetDana
- · Replies 3 ·
How Can Vector Calculus Help Solve a Complex Maxwell Equations Problem?
- gjfelix2006
- · Replies 4 ·
How can I solve this problem with valves and sealed tanks?
- ksle82
- · Replies 6 ·
Is Momentum Conserved in a Perfectly Elastic Non-Central Collision?
- John O' Meara
- · Replies 2 ·
Index of refraction and electromagnetic radiation
- physicsgal
- · Replies 4 ·
Mass of spherical balls after adding charges
- Amith2006
- · Replies 2 ·
The Physics of Rolling Down a Ramp
- daniel_i_l
- · Replies 6 ·
Tennis Ball Collide With Train Prob.
- Delzac
- · Replies 3 ·
Can Understanding Natural Frequencies Lead to Lethal Resonance?
- Delzac
- · Replies 13 ·
How Does the Time Derivative of Electric Field Cross with Magnetic Field?
- gjfelix2006
- · Replies 4 ·
Distances between Atoms in a Gas Molecule
- dingsbunnyranch
- · Replies 3 ·
How Do I Solve These Complex Magnetic Fields Problems?
- Hollysmoke
- · Replies 1 ·
Equation of Kinematics for Constant Acceleration
- User Name
- · Replies 3 ·
Why Gases are Not Commercially Sold by Volume
- KingTutATL
- · Replies 4 ·
Apparent visual magnitude/brightness problem
- toph
- · Replies 1 ·
Can Initial Velocity and Angle Determine Impact in Projectile Motion?
- asdf1
- · Replies 10 ·
Air Balloon Ballast Q: Find Weight to Rise 105m in 15s
- KingTutATL
- · Replies 4 ·
Total Work of 2 Carnot Engines | 890K & 670K
- KingTutATL
- · Replies 2 ·
How Does Heat Expansion Affect Gas Temperature?
- KingTutATL
- · Replies 1 ·
Calculating Energy Dissipated in Copper Wire Loop Due to Magnetic Field Increase
- StudentofPhysics
- · Replies 1 ·
Identifying an element from Emission Spectrum
- ness9660
- · Replies 2 ·
Pressure exerted in an elevator
- KingTutATL
- · Replies 5 ·
How Do You Calculate Tension in Each Wire for a Hanging Painting?
- kristen151027
- · Replies 4 ·
Production of electric current
- uwmphysics
- · Replies 2 ·
Calculating Max Height in Relative Projectile Motion: Earth vs. Moving Elevator
- chem3
- · Replies 5 ·
Magnetic Field due to a current
- app
- · Replies 2 ·
Yet another projectile motion question - for practical writeup
- shichi_reifujin
- · Replies 5 ·
Solving Physics Problems: Dynamics Troubles
- F for Freedom
- · Replies 3 ·
Pauli's exclusion principle and fine structures
- jubba
- · Replies 5 ·
What Is the Problem with the Electron's Travel Distance in the Field?
- ksle82
- · Replies 8 ·
Angular Vector Help: Solving Wheel & Turntable Problem
- WyldFyr
- · Replies 2 ·
Relative motion: Understanding acceleration and velocity in an elevator
- asdf1
- · Replies 4 ·
Find Physics Olympiad Questions & Answers | Compadre.org
- daniel_i_l
- · Replies 2 ·
The role of gravity in terms of work done by an angled force on an incline
- Cali
- · Replies 4 ·
Elastic relativistic collisions
- Amith2006
- · Replies 1 ·
What Happens When You Blow Between Two Paper Cup Telephones?
- alwysnforevr002
- · Replies 3 ·
De Broglie Waves: All Moving Particles
- Amith2006
- · Replies 4 ·
Electrostatics charged spheres problem
- Kolahal Bhattacharya
- · Replies 5 ·
Can You Solve This Relative Velocity Physics Problem?
- leo_thunderbird
- · Replies 3 ·
Elastic and Inelastic Collision explanation
- cks
- · Replies 1 ·
Elastic Collision why I am wrong?
- cks
- · Replies 1 ·
Physics Problems: Seeking Help to Get Started
- Meiersux
- · Replies 1 ·
Friction Clarification Question
- kristen151027
- · Replies 37 ·
Stoke's Law & Hydrometer Test Overview
- CJP
- · Replies 1 ·
Torque whatmakes a car accelerate
- cks
- · Replies 5 ·
Physics + Logic = tired brain :biggrin:
- kristen151027
- · Replies 4 ·
Help I need the solution for these two
- vincikai
- · Replies 3 ·
Are De-Broglie Waves Mechanical or Electromagnetic?
- Amith2006
- · Replies 2 ·
Special relativity from different angle
- exponent137
- · Replies 3 ·
Applications of Mass Spectrograph
- Amith2006
- · Replies 3 ·
Solving Velocity & Acceleration - A Physics Challenge
- wells=mvp
- · Replies 3 ·
What are some conceptual MCQs on physics?
- al_201314
- · Replies 6 ·
Does a current produce an electric field?
- pivoxa15
- · Replies 15 ·
Energy Problems of box acceleration
- JassC
- · Replies 5 ·
How Does Rocket Propulsion Calculation Work with Changing Mass?
- webren
- · Replies 3 ·
Calculating Spring Constant for Maximum Acceleration of a Car
- Hollysmoke
- · Replies 15 ·
How Do You Calculate Tension in a Two-Block Pulley System?
- kristen151027
- · Replies 12 ·
How Do You Calculate the Time Interval Between Bounces of a Ball?
- taveuni
- · Replies 5 ·
What is the tension in the cable?
- kankerfist
- · Replies 8 ·
What level of precision is implied in a order-of-magnitude calculation
- asdf1
- · Replies 2 ·
What is the change of speed over time?
- pavadrin
- · Replies 3 ·
Calculating Pressure: Understanding the Relationship Between Volume and Force
- Idea04
- · Replies 3 ·
Understanding Vector Magnitude and Direction in Mechanics
- MathematicalPhysicist
- · Replies 8 ·
Coefficient of Friction at constant speed
- Tensaiga
- · Replies 2 ·
Weighing Less in Skyscraper Lobby: What's Going On?
- pengie4life
- · Replies 3 ·
How much work to move a charge?
- uwmphysics
- · Replies 2 ·
How to Convert Oersted to Tesla?
- Amith2006
- · Replies 1 ·