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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Thermodynamics - Thermal Expansion
- Kelvin
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How to prove the convergence of a factorial series using d'Alembert's criterion?
- twoflower
- · Replies 3 ·
How Can We Determine Earth's Mass Using a Pendulum?
- Bissli
- · Replies 5 ·
What is the Centripetal Acceleration of an Earth Satellite in a Circular Orbit?
- thomasrules
- · Replies 6 ·
Chemistry Problem - Reaction Rates
- Kawrae
- · Replies 3 ·
Electric potential between two parallel plates
- hype_chicky
- · Replies 2 ·
Satellite height from earth Question
- thomasrules
- · Replies 11 ·
What is the Ratio of y/x for Zero Net Electric Force on a Charge?
- compute_a_nerd
- · Replies 2 ·
Finding ΔH for a reaction using standard enthalpies
- courtrigrad
- · Replies 2 ·
What are principal angles?
- uranium_235
- · Replies 2 ·
What is the acceleration of the cart down the incline?
- KAW008
- · Replies 2 ·
Net Electric Field: Find Magnitude @ x=6cm
- figs
- · Replies 3 ·
Redemption - I Challenge Dextercioby
- apchemstudent
- · Replies 10 ·
How is the Force on Charge q Distributed Along the Rod?
- GingerBread27
- · Replies 3 ·
Infinite Series from Perturbation Theory
- ALime88
- · Replies 18 ·
How Fast is the River Current Where the Sunbather Overtakes the Raft?
- Lisa... needs help
- · Replies 3 ·
What is the density of the life preserver?
- AoshiShinomori
- · Replies 2 ·
Physics wave problems with standing waves and wave equations
- Shay10825
- · Replies 10 ·
Finding the Total Combinations When Two Oldest Children Cannot Be Both Chosen
- Ryoukomaru
- · Replies 2 ·
Prove (cos²θ - sin²θ)/(cos²θ + sinθ cosθ) = 1 - tanθ
- preet
- · Replies 9 ·
Calculating Acceleration in Elevators and Balloons
- Moe_the_Genius
- · Replies 4 ·
Highest Sustained Temperature Mankind Can Produce?
- Zelnick
- · Replies 4 ·
Why Does an Arrow Shot Upward Experience Negative Acceleration?
- mrd59
- · Replies 10 ·
A couple waves questions that my class can't get
- Sny
- · Replies 2 ·
Solve (x² + 4x)/3 + 84/(x² + 4x) = 11
- roger
- · Replies 16 ·
Can we do this with greater than sign
- Ryoukomaru
- · Replies 4 ·
What is the speed of the ball immediately before it strikes the ground?
- rmackay
- · Replies 7 ·
Cant solve diff-eq with substitution
- Ryoukomaru
- · Replies 4 ·
Solve v(t) from Power and Current Plots
- EvLer
- · Replies 2 ·
Where Can a Third Charge Be Placed to Cancel Out the Electrostatic Force on q_2?
- Silimay
- · Replies 5 ·
Swing Force Calculation: Solve for Horizontal Force
- Mo
- · Replies 3 ·
Solving for variables in algebra: three equation problems
- Maxer
- · Replies 2 ·
Where Can I Find General Physics Questions for Exam Preparation?
- CartoonKid
- · Replies 3 ·
How Deep is the Well If a Pebble Takes 15 Seconds to Make a Splash?
- blair2707
- · Replies 7 ·
Hydrogen excitation (griffiths 9.1)
- wizzart
- · Replies 5 ·
What Equations Calculate Solar Constant and Galactic Escape Velocity?
- nobunaga84
- · Replies 3 ·
Partial fraction of this expression?
- tinhnho
- · Replies 2 ·
Equilbrium charge between 2 charges
- thursdaytbs
- · Replies 11 ·
Reaching the Finish Line: Jumping a Car 21.1m with 1.48m Ramp Height
- hotmail590
- · Replies 5 ·
.Finding Angular Acceleration of a Seesaw
- laminatedevildoll
- · Replies 5 ·
Solving a Second Order Differential Equation with Circuit Components
- formulajoe
- · Replies 18 ·
Can Granularity of Electromagnetic Radiation Be Neglected?
- Athalus
- · Replies 7 ·
Electric field strength at midpoint of dipole with 3C charges
- DLxX
- · Replies 4 ·
Solving the Leaning Ladder Problem
- laminatedevildoll
- · Replies 7 ·
Coulombs Law and Electric Charges
- polarized
- · Replies 3 ·
How Can I Solve These Thermal Physics Problems?
- vitaly
- · Replies 4 ·
How do I determine the work done by an ice cube?
- vitaly
- · Replies 11 ·
Why Is Calculating Forces on a Truncated Cone's Surfaces Challenging?
- NotaPhysicsMan
- · Replies 11 ·
Calculating Charge on a 1.72 g Gold Nugget
- Purduenub03
- · Replies 5 ·
Energy conservation in vertices in QED
- adi
- · Replies 5 ·
Solving Hard Physics Problem: Flowerpot Falling from Balcony
- nemzy
- · Replies 2 ·
Converting conic general form to standard form by completing the square
- ms. confused
- · Replies 9 ·
In what direction should a boat point to cross a river directly?
- Phyzix
- · Replies 3 ·
How Do Projectile Dynamics Influence Collision Points?
- fasterthanjoao
- · Replies 2 ·
Rocket travelling up and down - kinematics
- hotmail590
- · Replies 3 ·
Limit - which result is correct?
- twoflower
- · Replies 10 ·
CHEM QUESTION - answer fast thx alot
- xLaser
- · Replies 2 ·
Tension in String for 0.25 kg Ball Revolving at 2 Hz
- Alexs45
- · Replies 7 ·
Easy problem that i dont understand
- nemzy
- · Replies 3 ·
How Much Does Earth Move Towards You When You Jump Off a Chair?
- UrbanXrisis
- · Replies 2 ·
Maths Puzzle 'A HAPPY XMAS' six have tried and failed
- oddjob2000
- · Replies 3 ·
Maximum speed on a curved road with static friction
- Alexs45
- · Replies 2 ·
If the ball revolves twice every second, what is the tension in the string?
- Alexs45
- · Replies 4 ·
Calculating Force on 2.8kg Object with 4.2m i-(3.3m)j Displacement
- UrbanXrisis
- · Replies 2 ·
How do you calculate tension and moment of inertia from given information?
- mspaic
- · Replies 2 ·
Understanding Precision and Uncertainty in Physics Problem Calculations
- haki
- · Replies 2 ·
Octane melting point, cylinder pressure, and buoyancy calculations
- jai6638
- · Replies 5 ·
Information on Barton's pendulum
- garytse86
- · Replies 3 ·
Physics of long jump from takeoff to landing
- Blashyrkh
- · Replies 6 ·
How to find the Max. distance of the bungee jumper?
- Esta
- · Replies 3 ·
Solve Spring Problem: Position, Work Done, and Kinetic Energy
- mrjeffy321
- · Replies 14 ·
Gravitational potential energy calculation
- Sanosuke Sagara
- · Replies 2 ·
Question regarding the change in kinetic energy(Gravitational)
- Sanosuke Sagara
- · Replies 2 ·
Why do train cars lean toward each other with Bernoulli's principle?
- marwan
- · Replies 3 ·
How Do You Prove the Sum of a Geometric Series in Complex Numbers?
- cepheid
- · Replies 5 ·
What are the Powers of Complex Numbers?
- cepheid
- · Replies 5 ·
What Are the Common Decay Modes of K-Mesons?
- Kika
- · Replies 5 ·
How do I solve a trigonometric equation on a given interval?
- courtrigrad
- · Replies 15 ·
What Is the Final Y Velocity When Two Bullets Merge?
- UrbanXrisis
- · Replies 8 ·
Torque on a 200 kg plank held by a string: why is my answer twice the book's?
- tonix
- · Replies 6 ·
Relative velocity of two ships moving at right angles
- Mo
- · Replies 15 ·
Increasing and Decreasing Intervals
- courtrigrad
- · Replies 3 ·
Find x-Coordinates of Points on y=3x/(2x-3) with Normal Parallel to 9y=4x+3
- footprints
- · Replies 3 ·
What Is the Maximum Safe Speed for a Car on a Circular Track?
- ChrisP2006
- · Replies 3 ·
How long does is remain in the air?
- SnitchSeekaHarry
- · Replies 12 ·
Integration by substituition question.
- misogynisticfeminist
- · Replies 7 ·
What is the Meaning and Origin of the Mathematical Constant e?
- Leonidas
- · Replies 3 ·
Midterm Review: Solving for Friction Work on a Rough Incline
- Sny
- · Replies 3 ·
Boundedness of P.T y=f(x) Given by $\frac {d^2y} {dx^2} + ye^x=0$
- poolwin2001
- · Replies 14 ·
The Trajectory of a Charge in an Electric Field
- evilempire
- · Replies 6 ·
Runway Length for Plane Takeoff in Windy Conditions
- omagdon7
- · Replies 3 ·
Finding Induced Current Density (J) in a Cylinder under a Magnetic Field
- denislemenoir
- · Replies 3 ·
Calculating Ski Jumper's Speed and Landing Distance on a Slope
- A_I_
- · Replies 18 ·
Where is the zero gravitational force point between Earth and Moon?
- thomasrules
- · Replies 13 ·
Electric field outside two concentric sphere's
- bulbanos
- · Replies 2 ·
Reviewing Chemistry Diploma Questions to Prepare for Exam
- Invisible
- · Replies 2 ·
Finding coefficients so aA+bB+C is parallel to y-axis
- formulajoe
- · Replies 6 ·
Simple Harmonic Motion of a horizontal spring
- Bri
- · Replies 3 ·
Help Solve Energy Problem 2: Tarzan & Jane's Swing
- Port
- · Replies 2 ·