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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3.0 kg bottle thrown upward with 55 N force for 80 cm
- jen333
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Derivatives in relation to curve sketching
- scorpa
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Calculating Force on a Table Attached to Hinges
- Kissinor
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Shouldn't Conservation of Momentum Be Conserved in this Problem?
- ColdFusion85
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Solve Magnetic Field from Perpendicular Wires Carrying Same Current
- NotaPhysicsMan
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Calculating Characteristics of a Sinusoidal Wave Propagating on a String
- potatonet
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Hwk Problem: Mechanical Energy
- shawonna23
- · Replies 4 ·
Thermal conductivity: are liquids better thermal conductors?
- adolfo
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Finding XL-XC in RLC circuit with 6.72A current and 55.9° phase angle
- waywardtigerlily
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Conditions on the coefficients of conics equations
- cocoavi
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Simple Harmonic Motion of a Mass on a Spring
- UrbanXrisis
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Solving Geometric Series: Find x Values |r|<1
- Briggs
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Pressure Difference in a 2-m Deep Swimming Pool
- Naeem
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What Current Makes the Magnetic Field at the Center Zero?
- Soaring Crane
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A conceptual question on vectors
- Naeem
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Linear Momentum and Collisions of meteor
- wildr0id
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Minimum Height for Object to Travel Around Loop-the-Loop
- NickCherryJiggz
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Vector Addition Q: Find Z Component of A X B
- Naeem
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What is the finite difference method and how does it involve a grid?
- courtrigrad
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Effect of Sudden Radial Velocity Change on Orbital Energy and Angular Momentum
- asrodan
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Source-free 2nd order lin. circuit
- EvLer
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Area enclosed by parametric curve x=t³-2t, y=9t²
- ILoveBaseball
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Quantum Mech. Si Wavefunction probability
- mkkrnfoo85
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Calculating the Dieing Time of a Pendulum
- beawolf
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Is My Slope-Intercept Equation for Farmer Jack's Milk Prices Correct?
- bayswomen
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A weird domain and range? anybody up for a challenge
- dagg3r
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Problem using variation of parameters
- Tarhead
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Partial fractions for (2x-1)/(x²(3x+1)(x²+1))
- RadiationX
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Does the alternating harmonic series √n converge?
- tandoorichicken
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Distance and time for a treadmill
- Outblaze
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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
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Plotting y=(3/2)^(1/3)·arcsin(x)^(2/3) with domain constraints
- DivGradCurl
- · Replies 19 ·
Balancing iron (III) chloride formation from elements
- Dragonfly6191
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How to integrate x/(x⁴+1)
- tandoorichicken
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Calculating Power Generated at Hoover Dam
- confused1
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Horizontal tangents and normals to curves
- ][nstigator
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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~
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Constant frequency for light waves?
- thursdaytbs
- · Replies 5 ·
Electric field outside a positive wire in a negative cylinder
- colonel
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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
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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
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How Is Coulomb's Law Demonstrated with a Suspended Charged Ball?
- rindishy123
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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
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Parametric equations for a circle
- ILoveBaseball
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Solving Polynomial: x^(3/2) + (1+x^3)^(1/2)
- jessawells
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How to Calculate Energy to Push an Object 100 km Without Knowing Its Mass?
- Chewy1976
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Friction: Does Contact Area Affect Force?
- student85
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40 or 400 which has greater standard deviation?
- aisha
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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
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Sketching y = (x-1)²/(x+1)(x-2) with intercepts and asymptotes
- dagg3r
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Find diameter of steel wire - stress
- UrbanXrisis
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Involving Errors In Calculations
- richnfg
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Why Does Momentum Seem Unequal in a Ball-Wall Collision?
- alcatras
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Banked curve involving friction
- SeReNiTy
- · Replies 9 ·
Parametric equations for a loop
- ILoveBaseball
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Write an expression for f3 in terms of f2
- tony873004
- · Replies 14 ·
Unit Step Function and Laplace Transforms
- Spectre5
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How Does a Pendulum React in Freefall? CN Tower Experiment
- thierryhenry
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What Is the Correct Calculation for the Power Delivered by an Elevator Cable?
- shawonna23
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Volume, arc length, and surface area for curved building base
- ProBasket
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Why Does Interference Still Occur with Red Light Passing Through Slits?
- primarygun
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What is the Domain and Range for f and g?
- joejo
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What causes ghosting of a TV picture?
- PaLma
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What are the orbital parameters of a planet orbiting a star?
- jaymode
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Period, max speed and acceleration for 1 kg mass on spring
- UrbanXrisis
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How much internal energy is produced in the battery
- abot
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How Do You Calculate the Energy in a Complex EM Wave?
- freemind
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How Do You Solve These Complex Geometry and Rate Problems?
- erik05
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Magnetic Field Intensity Question
- sillucius
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How Accurate Are Calculations for Satellite Orbit Energy and Rocket Altitudes?
- six789
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Converting a Complex Number to Polar Form
- EvLer
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Finding weights and friction in a static pulley system using Lagrange's equation
- TheDestroyer
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Finding yield rate for two bonds with different coupons
- SciFi Chick
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Can You Solve This Kinematics, Energy, and Momentum Diagram Problem?
- six789
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Good books and sites for revising SPM General Physics
- Mafer
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Find $\frac{d^2y}{dx^2}$ for Parametric Equations x,y
- ILoveBaseball
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Disinfectant and bacteria experiment VERY
- saltrock
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Work Done on Sled by Rope: 5.0s, 250N, 470N
- evan4888
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3 free response practice AP problems
- Shay10825
- · Replies 26 ·
Pre-Calculus - Regarding finding the area of a certain region
- phEight
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Seemingly easy quantum question
- bemigh
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Finding M2 in a two-mass spring system with known M1, k, and period T
- KingOfTwilight
- · Replies 9 ·
Understanding Linear Momentum: Ranking Force and Slowing Regions
- RadiationX
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HEat energy given off by a person
- Juvenile
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The limit of the product is the product of the limits.
- Spectre5
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