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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Newton's Law of Universal Gravitation Problem
- ova5676
- · Replies 9 ·
Difference between electric potential and electric potential energy
- logearav
- · Replies 1 ·
Centripetal force and satellite
- mac227
- · Replies 1 ·
The system shown in the figure below consists of a mass M = 4.3-kg
- astr0
- · Replies 1 ·
Barometer Problem: Reading When Freely Falling
- turhan nasri
- · Replies 4 ·
Torque and angular acceleration question
- Spartan301
- · Replies 14 ·
Angular Momentum of a counterweight
- Sheneron
- · Replies 16 ·
Newton's third law and friction
- cassiek
- · Replies 1 ·
Drawing equipotential lines and field lines
- tmilford
- · Replies 3 ·
Heat transfer and heat from lightbulbs
- tiffanysnow
- · Replies 8 ·
Calculating Work and Energy for a Cyclist Riding Up a Slope
- yongjiniyam
- · Replies 6 ·
Moment of Inertia of Plate: Integration Proves 1/3ma^2+b^2
- astr0
- · Replies 3 ·
Equivalent Resistance: How to Rank Resistors from Highest to Lowest
- MitsuShai
- · Replies 6 ·
Finding Distance Traveled with Varying Acceleration
- vipulgoyal
- · Replies 6 ·
Calculating Equivalent Resistance in a Hexagonal Prism Circuit
- zorro
- · Replies 41 ·
Output power-calculations on tesla turbine
- Knight Rider
- · Replies 2 ·
Speed of Cylinder & Hoop Down Ramp: Analysis
- missnuss
- · Replies 5 ·
Falling yo-yo attached to string
- Jeptha
- · Replies 1 ·
Ball Free Fall Homework: Speed & Energy Calculations
- chawki
- · Replies 4 ·
Falling Chimney, Angular and Linear Acceleration
- Versaiteis
- · Replies 2 ·
Electric field of a semi circle
- madah12
- · Replies 10 ·
How do I find the other particular solution?
- FLms
- · Replies 2 ·
Solving Archimedes Principle Homework: Understanding Derivation
- funcosed
- · Replies 2 ·
A pendulum with a light rigid rod
- Leonidu
- · Replies 1 ·
How Do I Set Up My Circuit Lab for Correct Data Analysis?
- burgerking316
- · Replies 1 ·
Magnetic Forces in and around a coaxial cable
- 032050
- · Replies 6 ·
How do I find the net capacitance across AO?
- cupid.callin
- · Replies 1 ·
Combination of Cells: Parallel Connection
- Abhishekdas
- · Replies 4 ·
Irreversible change - thermodynamics
- Grand
- · Replies 1 ·
Distance of closest approach for two protons
- AStaunton
- · Replies 13 ·
Problem in Newton's third law and rope tension
- tmn50
- · Replies 10 ·
How Does the Angle θ Relate to Φ in Static Equilibrium of a Tilted Rod?
- NJJ289
- · Replies 1 ·
Work. Positive, Negative, or Zero
- Llacrossedude
- · Replies 4 ·
Torque equilibrium problem with an angled uniform beam
- boddie
- · Replies 8 ·
Rope and Bird Mechanics: Calculating the Force on a Hanging Rope
- vipulgoyal
- · Replies 7 ·
What is the maximum period of revolution for a cone filled with water?
- vipulgoyal
- · Replies 5 ·
Displacement of spring, block down an incline
- booksrmylife
- · Replies 1 ·
What is the role of resistors in a vacuum tube circuit?
- TobeHode
- · Replies 9 ·
Electrons accelerated between two plates
- thegroovyguru
- · Replies 2 ·
Solving Circular Motion for Two Bodies Separated by Distance A
- vipulgoyal
- · Replies 2 ·
Natural Log in Thermodynamic Equations related to Entropy.
- eliassiguenza
- · Replies 3 ·
Deriving equations involving sin and cos
- thezac11
- · Replies 1 ·
Mechanics - Springs and pulleys
- cupid.callin
- · Replies 6 ·
Angle due to angular acceleration
- notsam
- · Replies 1 ·
How Is the Value of k Determined in Refraction and Reflection Problems?
- zorro
- · Replies 5 ·
Charged Rod and Neutral Sphere Interaction: Repulsion Confirmed?
- Nikitin
- · Replies 5 ·
Converting revolutions per minute to rad/s for angular acceleration
- notsam
- · Replies 12 ·
Need help with a physics practical to do with slingshots?
- obi1
- · Replies 6 ·
Angular Acceleration: Min Speed for Cord to Not Slack
- notsam
- · Replies 2 ·
Kirchhoff's Loop Rule Conceptual Question
- cse63146
- · Replies 8 ·
Angular Velocity of a satellite
- notsam
- · Replies 2 ·
Component vector method for resultant force
- argentnox
- · Replies 2 ·
Find the acceleration vector in terms of u subscript r and u subscript
- physics_88
- · Replies 2 ·
Angular acceleration of tires on a car
- Spartan301
- · Replies 4 ·
Circular motion of bead and wire
- smallittle
- · Replies 2 ·
Trouble finding F(x) for a particle moving on a horizontal plane
- astenroo
- · Replies 5 ·
Bat Hitting Ball: Find Speed After Collision
- alfredo24pr
- · Replies 11 ·
Vector of a particle moving in space help
- zorro
- · Replies 9 ·
Center-of-mass work stopping distance
- epicbattle
- · Replies 2 ·
Thermal Expansion of Joined Plates - Finding Tension in Copper Plate
- zorro
- · Replies 8 ·
Mechanics - falling ball and impulse
- cupid.callin
- · Replies 10 ·
Does a Dielectric Rod Alter the Force Between Electric Charges?
- FermatPell
- · Replies 1 ·
Improving Practical Physics Skills: Tips for Struggling Students
- alias25
- · Replies 2 ·
Ballistic Pendulum: Find the Bullet's Speed
- chawki
- · Replies 2 ·
Finding Velocity(Momentum related)
- Exuro89
- · Replies 1 ·
What is the role of centripetal force in circular motion?
- ThomasMagnus
- · Replies 11 ·
Transfer function, Laplace Transform
- papkin
- · Replies 2 ·
Optics, involving index of refraction
- thezac11
- · Replies 4 ·
Finding the forces exerted with the center of mass?
- joeyjane
- · Replies 1 ·
How Do You Calculate the Constant C in a Cylindrical Wire's Current Density?
- Hank_Rearden
- · Replies 17 ·
How Do You Calculate Image Size and Location with a Diverging Lens?
- Robin_oto
- · Replies 1 ·
Finding theta for a torque problem in equilibrium
- boddie
- · Replies 5 ·
Block sliding down wedge max value problem
- bodensee9
- · Replies 4 ·
Finding coefficient of friction from wood block pull test data
- IMSTUCK
- · Replies 2 ·
Physics : Work Energy Power Question
- Gunman
- · Replies 3 ·
What Does the Voltmeter Read When a Current Increases in an Inductor Loop?
- JustinLevy
- · Replies 35 ·
How to Find Voltage Between Node 1 and Node 2?
- builder_user
- · Replies 21 ·
Mass attached to two opposing strings
- Lanza52
- · Replies 11 ·
Work on an incline with friction.
- d.tran103
- · Replies 2 ·
Electro Statics What am I missing?
- tallbus1
- · Replies 3 ·
Trains heading toward each other
- chawki
- · Replies 12 ·
Center of mass with masses of unequal widths
- LBP
- · Replies 8 ·
How High Does a Rolling Cylinder Reach on a Smooth Incline?
- nathangrand
- · Replies 1 ·
Mechanics - Cylinders, springs and rough inclined plane
- cupid.callin
- · Replies 5 ·
Mutual Inductance for a Pair of Coils
- mjk71
- · Replies 4 ·
Why Does the Pendulum Angle Calculation Show 60° Instead of 30°?
- cupid.callin
- · Replies 3 ·
Rotation - Moment of Inertia of semicircular disc
- cupid.callin
- · Replies 1 ·
Velocity as a function of length
- Tombo254
- · Replies 2 ·
How Does Friction Affect a Rotating Disk on an Inclined Plane?
- mmainak
- · Replies 3 ·
Average power needed to lift an object
- IAmPat
- · Replies 1 ·
Two particles heading toward each other
- chawki
- · Replies 1 ·
Tangential speed problem with a hard drive disk
- Spartan301
- · Replies 2 ·
Finding the minimum angle of deviation for an equilateral prism
- thezac11
- · Replies 3 ·
Pulley Cable System (Conceptual)
- jzwiep
- · Replies 4 ·
Power needed to push an object vertical at constant velocity
- IAmPat
- · Replies 6 ·
Electric potential of hydrogen molecular ion
- smoics
- · Replies 11 ·
Newtonian Gravity- Body 'falling' into the sun integration problems
- Romeo
- · Replies 10 ·
Fringe spacing for a diffraction grading (wave optics)
- spaghed87
- · Replies 6 ·
Kinetic Energy Ratio and Momentum Ratio in Two Substances
- vipulgoyal
- · Replies 2 ·