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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Vertical or Horizontal ellipse?
- aisha
- · Replies 11 ·
Distance between current-carrying loops
- Brainy_Mike
- · Replies 3 ·
Mechanical energy of a mass-spring system
- Hit an Apex
- · Replies 5 ·
3.0 kg bottle thrown upward with 55 N force for 80 cm
- jen333
- · Replies 7 ·
Derivatives in relation to curve sketching
- scorpa
- · Replies 7 ·
Calculating Force on a Table Attached to Hinges
- Kissinor
- · Replies 3 ·
Shouldn't Conservation of Momentum Be Conserved in this Problem?
- ColdFusion85
- · Replies 2 ·
Solve Magnetic Field from Perpendicular Wires Carrying Same Current
- NotaPhysicsMan
- · Replies 2 ·
Calculating Characteristics of a Sinusoidal Wave Propagating on a String
- potatonet
- · Replies 2 ·
Hwk Problem: Mechanical Energy
- shawonna23
- · Replies 4 ·
Thermal conductivity: are liquids better thermal conductors?
- adolfo
- · Replies 2 ·
Finding XL-XC in RLC circuit with 6.72A current and 55.9° phase angle
- waywardtigerlily
- · Replies 2 ·
Conditions on the coefficients of conics equations
- cocoavi
- · Replies 5 ·
Simple Harmonic Motion of a Mass on a Spring
- UrbanXrisis
- · Replies 6 ·
Solving Geometric Series: Find x Values |r|<1
- Briggs
- · Replies 5 ·
Pressure Difference in a 2-m Deep Swimming Pool
- Naeem
- · Replies 3 ·
What Current Makes the Magnetic Field at the Center Zero?
- Soaring Crane
- · Replies 12 ·
A conceptual question on vectors
- Naeem
- · Replies 10 ·
Linear Momentum and Collisions of meteor
- wildr0id
- · Replies 2 ·
Minimum Height for Object to Travel Around Loop-the-Loop
- NickCherryJiggz
- · Replies 2 ·
Vector Addition Q: Find Z Component of A X B
- Naeem
- · Replies 4 ·
What is the finite difference method and how does it involve a grid?
- courtrigrad
- · Replies 3 ·
Effect of Sudden Radial Velocity Change on Orbital Energy and Angular Momentum
- asrodan
- · Replies 2 ·
Source-free 2nd order lin. circuit
- EvLer
- · Replies 2 ·
Area enclosed by parametric curve x=t³-2t, y=9t²
- ILoveBaseball
- · Replies 5 ·
Quantum Mech. Si Wavefunction probability
- mkkrnfoo85
- · Replies 9 ·
Calculating the Dieing Time of a Pendulum
- beawolf
- · Replies 2 ·
Is My Slope-Intercept Equation for Farmer Jack's Milk Prices Correct?
- bayswomen
- · Replies 2 ·
A weird domain and range? anybody up for a challenge
- dagg3r
- · Replies 3 ·
Problem using variation of parameters
- Tarhead
- · Replies 2 ·
Partial fractions for (2x-1)/(x²(3x+1)(x²+1))
- RadiationX
- · Replies 11 ·
Does the alternating harmonic series √n converge?
- tandoorichicken
- · Replies 8 ·
Distance and time for a treadmill
- Outblaze
- · Replies 2 ·
Calculating Vapour Pressure for 1L Container with 5mL Water at 20°C
- ChemRookie
- · Replies 2 ·
Building a Quake Tower for High School Physics Class
- Buckethead8723
- · Replies 2 ·
Plotting y=(3/2)^(1/3)·arcsin(x)^(2/3) with domain constraints
- DivGradCurl
- · Replies 19 ·
Balancing iron (III) chloride formation from elements
- Dragonfly6191
- · Replies 4 ·
How to integrate x/(x⁴+1)
- tandoorichicken
- · Replies 9 ·
Calculating Power Generated at Hoover Dam
- confused1
- · Replies 2 ·
Horizontal tangents and normals to curves
- ][nstigator
- · Replies 4 ·
How to find lim (pi/2 - x)/cos(x) as x -> pi/2?
- gillgill
- · Replies 10 ·
Why can't you charge all identical capacitors in this circuit?
- apchemstudent
- · Replies 7 ·
When is Re(z²) = (Re z)² and Im(z²) = (Im z)²?
- ~angel~
- · Replies 27 ·
Constant frequency for light waves?
- thursdaytbs
- · Replies 5 ·
Electric field outside a positive wire in a negative cylinder
- colonel
- · Replies 2 ·
Starting a Limit Problem with x^3/(tan^3(2x)) as x Approaches 0
- gillgill
- · Replies 4 ·
Low lunar orbit vs synchronous lunar orbit for communication satellites
- iambooboo
- · Replies 12 ·
Finding force, distance, time on a threadmill
- Outblaze
- · Replies 2 ·
Calculating Solar System Reach of Pioneer Craft Without Assist
- six789
- · Replies 7 ·
Software for learning matrices?
- PBRMEASAP
- · Replies 2 ·
Work to stop a spinning wheel: why is my answer negative?
- Punchlinegirl
- · Replies 2 ·
Calculating Work to Place Satellite in Synchronous Orbit
- six789
- · Replies 4 ·
Finding intercepts of the hyperbola (x-1)²/9-(y+2)²/25=1
- aisha
- · Replies 12 ·
Escape velocity ratio between Mars and Earth
- six789
- · Replies 29 ·
Angular displacement of rotating wheel and banking angle for a highway curve
- wetcarpet
- · Replies 3 ·
How Is Coulomb's Law Demonstrated with a Suspended Charged Ball?
- rindishy123
- · Replies 3 ·
Calculation of a half-life how?
- LoBun
- · Replies 15 ·
Why does higher gravitational pressure mean lower acceleration?
- apchemstudent
- · Replies 4 ·
Electric Charge in a Magnetic Field
- Soaring Crane
- · Replies 4 ·
Parametric equations for a circle
- ILoveBaseball
- · Replies 2 ·
Solving Polynomial: x^(3/2) + (1+x^3)^(1/2)
- jessawells
- · Replies 4 ·
How to Calculate Energy to Push an Object 100 km Without Knowing Its Mass?
- Chewy1976
- · Replies 2 ·
Friction: Does Contact Area Affect Force?
- student85
- · Replies 3 ·
40 or 400 which has greater standard deviation?
- aisha
- · Replies 2 ·
Trig substitution integral with x bounds 0 to 5
- RadiationX
- · Replies 9 ·
Magnetic Field Calculation for Perpendicular Currents at Point P
- NotaPhysicsMan
- · Replies 13 ·
How do you find current with both series and parallel resistors?
- Burrow
- · Replies 7 ·
Sketching y = (x-1)²/(x+1)(x-2) with intercepts and asymptotes
- dagg3r
- · Replies 2 ·
Find diameter of steel wire - stress
- UrbanXrisis
- · Replies 2 ·
Involving Errors In Calculations
- richnfg
- · Replies 4 ·
Why Does Momentum Seem Unequal in a Ball-Wall Collision?
- alcatras
- · Replies 2 ·
Banked curve involving friction
- SeReNiTy
- · Replies 9 ·
Parametric equations for a loop
- ILoveBaseball
- · Replies 6 ·
Write an expression for f3 in terms of f2
- tony873004
- · Replies 14 ·
Unit Step Function and Laplace Transforms
- Spectre5
- · Replies 15 ·
How Does a Pendulum React in Freefall? CN Tower Experiment
- thierryhenry
- · Replies 2 ·
What Is the Correct Calculation for the Power Delivered by an Elevator Cable?
- shawonna23
- · Replies 3 ·
Volume, arc length, and surface area for curved building base
- ProBasket
- · Replies 6 ·
Why Does Interference Still Occur with Red Light Passing Through Slits?
- primarygun
- · Replies 6 ·
What is the Domain and Range for f and g?
- joejo
- · Replies 28 ·
What causes ghosting of a TV picture?
- PaLma
- · Replies 2 ·
What are the orbital parameters of a planet orbiting a star?
- jaymode
- · Replies 4 ·
Period, max speed and acceleration for 1 kg mass on spring
- UrbanXrisis
- · Replies 3 ·
How much internal energy is produced in the battery
- abot
- · Replies 2 ·
How Do You Calculate the Energy in a Complex EM Wave?
- freemind
- · Replies 3 ·
How Do You Solve These Complex Geometry and Rate Problems?
- erik05
- · Replies 3 ·
Magnetic Field Intensity Question
- sillucius
- · Replies 4 ·
How Accurate Are Calculations for Satellite Orbit Energy and Rocket Altitudes?
- six789
- · Replies 3 ·
Converting a Complex Number to Polar Form
- EvLer
- · Replies 3 ·
Finding weights and friction in a static pulley system using Lagrange's equation
- TheDestroyer
- · Replies 3 ·
Finding yield rate for two bonds with different coupons
- SciFi Chick
- · Replies 4 ·
Can You Solve This Kinematics, Energy, and Momentum Diagram Problem?
- six789
- · Replies 4 ·
Good books and sites for revising SPM General Physics
- Mafer
- · Replies 2 ·
Find $\frac{d^2y}{dx^2}$ for Parametric Equations x,y
- ILoveBaseball
- · Replies 4 ·
Disinfectant and bacteria experiment VERY
- saltrock
- · Replies 2 ·
Work Done on Sled by Rope: 5.0s, 250N, 470N
- evan4888
- · Replies 2 ·
3 free response practice AP problems
- Shay10825
- · Replies 26 ·
Pre-Calculus - Regarding finding the area of a certain region
- phEight
- · Replies 4 ·
Seemingly easy quantum question
- bemigh
- · Replies 2 ·
Finding M2 in a two-mass spring system with known M1, k, and period T
- KingOfTwilight
- · Replies 9 ·