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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Mirrors & Lenses: Understanding Virtual and Real Images
- pearlz4eva
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How Do You Calculate Pressure Drop in a Garden Hose?
- Student3.41
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Work energy question. Rock down a hill.
- Exuro89
- · Replies 3 ·
Resultant Acceleration of an Object Under Perpendicular Forces
- Jamotron
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Applying Newton's Third Law of Mortion
- Rosieposy08
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Why is the tension different in two systems with the same downward force?
- Cursed
- · Replies 9 ·
Calculating Force Needed to Pull Sled with 210kg Load
- chawki
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Ballistic free-fall - rock slide
- gremmie
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Simple Harmonic Motion- Phase Shift Help
- Brian M
- · Replies 6 ·
Finding F on a box on an inclined plane
- mistabry
- · Replies 2 ·
Understanding d^3 vec{r} and its Role in Integrals | Helpful Explanation
- InsertName
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Momentum & Pulleys Homework: Solving for Velocity
- cupid.callin
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Hohmann Transfer, energy for both boosts
- jcook735
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Orbit changes, Kepler's Third Law
- jcook735
- · Replies 6 ·
Why Does SQRT(3) Factor into the Coulomb Force in an Equilateral Triangle?
- Chronos000
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Electromagnets and Conductors: The Effects on a Pendulum
- XigmaTek
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Hypothesis on voltage homework
- ccnv
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Particle Motion in One Dimension
- vsc
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Hi, Momentum (Classical Physics) Help
- Xtremeownage
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Baseball Kinematics: Calculating Acceleration from Stopping Distance
- novawinters
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Calculating Tension for Rope Crossings with Angles & Weight
- Skuriakose
- · Replies 1 ·
Calculating Distance from Seismograph Arrival Times
- Student3.41
- · Replies 21 ·
3 consecutive loops with one being moved from the other two. Len'z Law
- ohsocheezy
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How Do Pulley Systems Affect Tension Between Different Masses?
- dorkymichelle
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What Forces Act on a Motorcyclist Accelerating Up an Incline?
- dorkymichelle
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Baseball's Initial Velocity Problem
- unholymist
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Circular Path of a Pendulum Problem
- whoopie88
- · Replies 9 ·
Position and Speed of a Hockey Puck with Applied Force
- neurotikfisch
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How Do You Calculate Vector Sums and Differences Graphically?
- soul814
- · Replies 68 ·
Electric Field of Infinite Plate: Why Use Cylindrical Gaussian Surface?
- IKonquer
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What Determines the Flow Speed in Differently Sized Horizontal Tubes?
- Hypnos_16
- · Replies 3 ·
Understanding Kepler's Laws: Unraveling the Mathematical Derivations
- kingpeje
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How Much Work Was Done by the Pump to Drain a Flooded Basement?
- jelzap
- · Replies 1 ·
How Do You Calculate the Final Speed of Two Colliding Cars?
- shanshan
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Potential difference across a capacitor
- issacnewton
- · Replies 2 ·
Coefficient of Kinetic Friction
- The Tutor
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Mass on a Spring Homework: Find KE & Speed at x=0
- erok81
- · Replies 11 ·
Understanding Electric Fields and Calculating E= dV/dS
- cheater1
- · Replies 11 ·
Vibration related: Rigid body modes
- Doctor_Doom
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Thermodynamics homework question, , por favor?
- Shakoa
- · Replies 8 ·
Car collision problem. Conservation of momentum
- physicgeek
- · Replies 3 ·
Solve for Time When Two Boys Meet While Moving - Travel Problem
- chawki
- · Replies 15 ·
Electric Potential and Gauss' Laws Stuff (I think)
- I Am Robot
- · Replies 1 ·
How to Determine Uncertainty for Pi Using Formulas and Calculus?
- FBS
- · Replies 1 ·
Parallel Resistors Problem: Total Current and Power Dissipation Calculation
- chawki
- · Replies 1 ·
Inelastic collision physics help
- jtw2e
- · Replies 11 ·
Spring and Incline Plane (Conservation of Energy Problem)
- jzwiep
- · Replies 4 ·
What is the angle between the wire and the vertical?
- Peter G.
- · Replies 7 ·
Find capacitance from time, power, and voltage
- ikjadoon
- · Replies 4 ·
What is the Resistance of a Cylinder Conductor Made of Aluminum?
- JSGandora
- · Replies 5 ·
Vector Addition and Displacement Magnitude in 3D Space
- jared69sib
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Solving a Momentum Problem: Bullet-Block System with Spring Compression
- mohamud3917
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Kinematics, Displacement from Velocity-Time
- cidilon
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How to Find the Resultant Force of Three Forces Acting on a Point?
- Phantom5800
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Solving a Particle on an Inclined Plane: Help Needed!
- T.S.M
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Relationship Between Tension And Resonant Frequency.
- daaaannn.
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How Does a Charged Ring Affect Electric Field and Oscillation Frequency?
- serrakartal
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How to determine terminal voltage for a circuit
- Strontium90
- · Replies 8 ·
Low Air in Tires: Impact on Fuel Efficiency
- ashishsinghal
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What are the force components for each member in the loaded truss?
- SteelDirigibl
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Electric Field for a line of charge
- VitaX
- · Replies 8 ·
Electric Field over an infinite sheet
- VitaX
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Do Vessels with the Same Base Area Have Different Weighing Scale Readings?
- Abhishekdas
- · Replies 6 ·
What is the frequency of note y if it is two sext higher than note x?
- songoku
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Exploring the Coherence Length and Repeat Length in Wave Packets
- zarrin77
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Math symbols on GRE POWERPREP software
- Jupiter6
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Solve Forces Homework: Sphere Mass 4.7x10-4kg, 32° Angle
- dorkymichelle
- · Replies 2 ·
Solving for Damping Coefficient of Pendulum
- dezzz
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Determine what's in a container
- displayname
- · Replies 5 ·
How Do You Calculate the Velocity of a Ball Thrown from a Moving Train?
- leafsfan2
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How Do I Plot an Acceleration-Time Graph from a Given Velocity-Time Graph?
- n3w ton
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Calculating Self-Inductance in Coaxial Cables
- bon
- · Replies 3 ·
Bungee Jumping: Min Spring Constant to Support Jorge (75kg)
- renegade05
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How Much Force is Needed to Move a Crate with Friction?
- elsternj
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Dynamics problem - spring on a slope
- HmBe
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Definition of stationary state (for wave function quantum)
- AStaunton
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Electric Field, Potential Between 3 Charged Electrodes
- Bogus_Roads
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How Much Force Is Needed for a 450g Object to Accelerate at 8cm/s²?
- pdot
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Heating 5.0dl of Coffee Water: How long does it take?
- chawki
- · Replies 4 ·
Incline + Spring = Hours of Fun. Sort of.
- glossolalia
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Calculating Energy Stored in a Capacitor: Is There a Shortcut Method?
- zorro
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Isothermal Expansion - Rev. or Irre. ?
- zorro
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Simple Harmonic Motion - Finding period of oscillation of block
- zorro
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Problem with physics acceleration
- pdot
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Possible Magnitudes for Resultant Vector
- ThomasMagnus
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What is the relationship between magnetic fields and wires?
- jmiller5001
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Can you help me prepare me for my E&M lab practical?
- rickyman
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Where to attach the leads for the equivalent resistor?
- dimpledur
- · Replies 6 ·
Solving Momentum Homework Questions: Q1 & Q2
- Xtremeownage
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How long to heat 0.76 kg water by 15 C from a 41-Ohm resistance at 230 V
- chawki
- · Replies 5 ·
What is the effect of unequal charges on a parallel plate capacitor?
- bon
- · Replies 9 ·
Rotational kinetic energy problem
- bodensee9
- · Replies 6 ·
M1 Dynamics: Find Tension, Friction & Force on Pulley
- T.S.M
- · Replies 1 ·
Solve Vector Force Problem with Trigonometry: Step-by-Step Guide"
- neurotikfisch
- · Replies 2 ·
Polarization Conceptual Question
- megeinstein
- · Replies 1 ·
Mechanics Kinematic General Concept question, not a numerical?
- T.S.M
- · Replies 4 ·
Electric field - find earths electric charge
- XxphysicsxX
- · Replies 1 ·
Projectile Motion: Calculate Acceleration, Height, & More
- ado21
- · Replies 2 ·
Potential difference between two points homework
- spottedcow913
- · Replies 1 ·
How Do You Calculate the Mass of Each Tanker Using the Universal Law of Gravity?
- Rgonzales
- · Replies 4 ·