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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Projectile motion of a fired cannon ball
- KEVIN Phlem
- · Replies 5 ·
Binding energy per nucleon and fission/fusion
- Hashiramasenju
- · Replies 3 ·
A +'ve charge Q is fixed to the origin. A -'ve charge 9Q
- abm77
- · Replies 5 ·
Does Electric Potential Energy Depend on the Mass of an Ion?
- Fluxxx
- · Replies 3 ·
Force to accelerate 250 kg vehicle to 100 km/h in 60 seconds
- Mew
- · Replies 6 ·
Writing the correct diff. equations for an RC circuit
- Yoni V
- · Replies 15 ·
Banked Roadway Design for Ice Conditions: Solving for Optimal Angle
- scharry03
- · Replies 5 ·
Find the Width of the Slit Given the Energy of the Electron Beam
- Potatochip911
- · Replies 10 ·
Elastic collision in 2-dimensions
- spark8819
- · Replies 3 ·
Work to assemble four point charges in a regular tetrahedron
- GreenLRan
- · Replies 10 ·
Calculating Pressure Exerted on A Gasoline Column
- JN Morris
- · Replies 2 ·
Find Normal and Tangential components of accelaration
- RyanH42
- · Replies 35 ·
Rings on a rod: angular momentum conceptual question
- omega5
- · Replies 2 ·
Calculate power to have the car at a certain speed
- SelenaT
- · Replies 4 ·
Calculate the pressure on an Onion Tank
- JN Morris
- · Replies 1 ·
Permissible error in pressure from errors in force and area
- Malu666
- · Replies 9 ·
How Does Mica Affect Fringe Shift in Young's Double-Slit Experiment?
- Potatochip911
- · Replies 3 ·
Law for magnetic field due to solenoid
- NooDota
- · Replies 12 ·
Finding acceleration of blue cylinder in two-cylinder pulley system
- wirefree
- · Replies 8 ·
Electromagnetism-Radius of Curvature-Question
- RoyalFlush100
- · Replies 3 ·
What type of wave is described by this equation
- subopolois
- · Replies 2 ·
Frequency of oscillation for a hanging mass on a spring?
- subopolois
- · Replies 4 ·
Using Waves to Find Depth of Well
- rockerdude1210
- · Replies 5 ·
Ball and light velocities from Earth's frame in moving airliner
- Jaimie
- · Replies 6 ·
Harmonic motion and Electrical Fields
- Qwurty2.0
- · Replies 2 ·
Coeff. of Linear Exp. of glass from vol expansion of content
- Qwurty2.0
- · Replies 6 ·
Magnitude of electric force on a proton
- Sox281212
- · Replies 6 ·
Calculating Traction Force for Leg Fracture Treatment
- TyroneTheDino
- · Replies 3 ·
Pressure of supercritical water inside a vessel
- Manoffew
- · Replies 3 ·
Entropy change of system two substances
- Qwurty2.0
- · Replies 9 ·
Direction of particle in electric field
- Fluxxx
- · Replies 2 ·
Calculating Pressure Outside a Box: Bernoulli's Equation
- subopolois
- · Replies 2 ·
Answer Scalar Quantity Q: Is Everything False?
- Praveen27
- · Replies 3 ·
Collision and angular velocity
- Saitama
- · Replies 22 ·
Mass Pulley System, Acceleration
- ryankunzzz
- · Replies 1 ·
Velocity of the Center of Mass
- ryankunzzz
- · Replies 2 ·
Observing from Earth the clock in a spaceship
- giuliopascal
- · Replies 3 ·
How Does Elastic Collision Affect Momentum and Force in Racquetball?
- Chickubi
- · Replies 3 ·
How Much Work Does a Man Perform by Jumping Off a Stationary Boat?
- Karol
- · Replies 2 ·
Cylinder on a decelerating truck
- Karol
- · Replies 29 ·
Friction between 3 blocks conceptual problem
- PhysicsKid703
- · Replies 17 ·
What slows down a rolling sphere?
- toesockshoe
- · Replies 13 ·
Acceleration of a Block Down a Ramp
- Drakkith
- · Replies 15 ·
Unit when multiplied or squared
- K.Callaghan
- · Replies 4 ·
Three Blocks Connected Concepts
- Jack Arnett
- · Replies 9 ·
Sound waves and frequency problem
- King Elizabeth
- · Replies 2 ·
Misconceptions about Newton's 3rd Law in GCSE Physics Revision Guide
- Jimmy87
- · Replies 5 ·
How to Find Acceleration from a Velocity-Distance Graph?
- takando12
- · Replies 19 ·
Friction and Couples: Understanding Coefficients
- Hashiramasenju
- · Replies 5 ·
Why do people feel weightless in a steep plane dive?
- Physiophysio
- · Replies 9 ·
Calculate intial angle of a refracted wave
- BOYLANATOR
- · Replies 7 ·
What Factors Affect the Calculation of Poisson's Ratio from Rosette Gauge Data?
- theone
- · Replies 2 ·
Thermal conduction between 3 rods
- j3dwards
- · Replies 2 ·
Venusian angular units and solar parallax from finger-based system
- RingNebula57
- · Replies 2 ·
Dynamics: Absolute and Relative Acceleration in Plane Motion
- Drew Davison
- · Replies 4 ·
Electric Fields problem: Can someone please check my work?
- goooogle
- · Replies 5 ·
Question on velocity changes in free fall
- Physiophysio
- · Replies 5 ·
Why is the coefficient of static friction independent of block weight on an incline?
- TyroneTheDino
- · Replies 1 ·
Doppler shift from a swinging fan
- TharitTk
- · Replies 2 ·
Double Paralell Plate Capacitor with Dielectric
- bananabandana
- · Replies 5 ·
Average Force on a Rocket During Gas Exhaustion
- subopolois
- · Replies 2 ·
Coefficient of Kinetic Friction and Variables
- TyroneTheDino
- · Replies 2 ·
Speed of particle Galilean relativity
- j3dwards
- · Replies 3 ·
Two masses attached to a fixed vertical spring
- JayB
- · Replies 2 ·
Finding nuclear spin and J from hyperfine structure of Cs-133
- Yaste
- · Replies 1 ·
What Determines the Decreasing Height of a Bouncing Ball?
- Liam Lau
- · Replies 9 ·
Find the total distance taken by the train.
- Electgineer
- · Replies 3 ·
A marble that is rolling without slipping approaches a hill
- Kellyn24
- · Replies 5 ·
What Is the Electric Force on an Electron in a Varying Electric Potential?
- w3dnesday
- · Replies 3 ·
Work-Energy principle and spring force
- Nayef
- · Replies 1 ·
Is my teacher's work for collisions problem correct?
- toesockshoe
- · Replies 3 ·
Current through resistor and inductor in parallel RC circuit
- Tracyxyzd
- · Replies 8 ·
How to Find Multiple Phase Constants
- rockerdude1210
- · Replies 4 ·
Gravitational and centripetal forces on mass at Earth's surface
- Jamessamuel
- · Replies 18 ·
Solid Mechanics - Stress-Strain diagram - absorbed energy
- Feodalherren
- · Replies 2 ·
Calculate force of friction on car as it rolls across
- SelenaT
- · Replies 6 ·
Optics Problem: Find Smallest Refractive Index of Slab
- arpon
- · Replies 3 ·
Why Does Virtual Work Seem Incorrect in This Statics Problem?
- John1951
- · Replies 12 ·
Does the tension in the rope change as the transverse wave travels upward?
- Fluxxx
- · Replies 13 ·
Can someone check my answer to a rotational problem?
- toesockshoe
- · Replies 40 ·
Unit Vectors for Polarization and Wave Vector Directions
- roam
- · Replies 3 ·
What Is the vrms for This Gas Distribution?
- Qwurty2.0
- · Replies 4 ·
What have I done wrong? (projectile motion)
- Mayzu
- · Replies 4 ·
Volumes at C and D in a Carnot cycle
- Qwurty2.0
- · Replies 3 ·
Maximum extension of a bungee cord
- Mayzu
- · Replies 9 ·
Fork pushed into ice (thermodynamics, clausius clapeyron)
- Robsta
- · Replies 1 ·
Pulley question- What have I done wrong here?
- Mayzu
- · Replies 1 ·
Calculating the speed of hammer to drive a nail in the wall
- ermcnoobphysics
- · Replies 13 ·
Conduction and convection- processes understanding
- Sahil Dev
- · Replies 4 ·
Is the Tension in Physics Problem 651N or 1302N?
- Teachme
- · Replies 3 ·
Speed for a meter stick to contract to 0.5 meters
- Tonia
- · Replies 12 ·
Convert Oersted to Gauss: Multiply by 4π
- sergiokapone
- · Replies 1 ·
How to solve this Cosine Law Equation?
- Shahab Mirza
- · Replies 16 ·
Moving atomic clock time dilation at 1000 km/h
- Tonia
- · Replies 6 ·
Calculating tension of moving object
- Cleo>_>
- · Replies 6 ·
Gauss' law for point charge inside sphere off center
- gimak
- · Replies 2 ·
Why do two different spherical capacitor configurations give the same capacitance?
- erisedk
- · Replies 6 ·
What is the significance of thermal resistance in heat transfer?
- Sahil Dev
- · Replies 7 ·
Car oscillation amplitude stays constant, graph shows frequency dependence
- Jamessamuel
- · Replies 5 ·
How Does a Lightbulb's Resistance Impact Its Power Consumption?
- skepticwulf
- · Replies 6 ·