Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Baseball rolled off 20-foot roof into pool
- Elle1121
- · Replies 3 ·
Free particle wave function behavior
- lants
- · Replies 5 ·
Finding the tension in a rope when acceleration is balanced
- Shadow236
- · Replies 7 ·
Prism : what if incident angle is greater than apex angle?
- adi adi
- · Replies 6 ·
2 dimensional kinematics involving a rocket
- TanakaTarou
- · Replies 1 ·
Finding normalization constant for wave function ψ(x) = b(a²-x²)
- leehufford
- · Replies 4 ·
Static displacement of a spring
- Dustinsfl
- · Replies 9 ·
Finding the extension of a spring
- Dustinsfl
- · Replies 12 ·
Definition of Electro Motive Force
- adjacent
- · Replies 1 ·
Newton's second law with vectors
- Shadow236
- · Replies 6 ·
Electric field and potential at the centre of a square with four charges
- JR9
- · Replies 1 ·
Look of trajectory of a material point
- Chemist@
- · Replies 6 ·
Why is a negative spring constant unrealistic in this system?
- user977784078
- · Replies 2 ·
How far up the hill will the projectile land?
- skeer
- · Replies 8 ·
Where is the image formed when a lens is placed next to an aquarium?
- franceboy
- · Replies 5 ·
Finding electrostatic potential
- ghostfolk
- · Replies 1 ·
What is electric potential in a capacitor?
- recomendacion
- · Replies 1 ·
How do I find the acceleration in Newton's 3 Laws Problem?
- paytona
- · Replies 7 ·
Finding current and potential difference within a circuit
- mathguy831
- · Replies 6 ·
Which of these diagrams represent the same circuit?
- Feodalherren
- · Replies 11 ·
Length Contraction: Why Must dx be Measured in the Prime Frame?
- Pezz
- · Replies 1 ·
Circuit Segment (Two sources with a resistor in between)
- Bluestribute
- · Replies 3 ·
Finding the acceleration of gravity given 2 masses
- jg871
- · Replies 5 ·
Two Carts attached to a string
- B3NR4Y
- · Replies 5 ·
Is the Charge on the Inner Wall of a Conducting Sphere Zero?
- Toddy
- · Replies 1 ·
Plotting momentum and potential vs time from experimental data
- tinker99
- · Replies 4 ·
What are the correct heights for Tom after a collision with Dan in a halfpipe?
- mcrwinner
- · Replies 1 ·
Motorcycle velocity after 500 ft with force F(t)=300(1−0.1t)
- phyziks4lyfe
- · Replies 8 ·
Circular Orbit / Practice Quiz #4, Question 27
- gcombina
- · Replies 6 ·
Action Potential Through Ion Channel, Total Number of Ions Through
- Bluestribute
- · Replies 13 ·
Hydro static forces on curved surfaces
- princejan7
- · Replies 1 ·
Find the resistance for maximum power transfer
- MattHorbacz
- · Replies 7 ·
Calculate Energy Density of Spherical Capacitor
- AGGENGR
- · Replies 1 ·
Relationship of acceleration of masses in pulley
- drragonx
- · Replies 12 ·
Conductor with shell problem getting zero as answer?
- AGGENGR
- · Replies 2 ·
Where to cut the string for maximum height above circle center
- MattWakes
- · Replies 9 ·
Regarding vectors, resultants, and angles
- ble
- · Replies 3 ·
Estimate the mass of a spinning ice skater
- spiruel
- · Replies 5 ·
Changing Rho, Finding Resistance
- Bluestribute
- · Replies 6 ·
How Does an Underwater Current Affect Submarine Navigation?
- andkand97
- · Replies 18 ·
Calculating Electric Field Components for Discrete Charge Distribution
- clb399
- · Replies 4 ·
Calculating Electron Acceleration Potential
- gxc9800
- · Replies 2 ·
Calculating Time Needed for 10 m/s Increase
- Aamurs
- · Replies 3 ·
What is the Tension in a Pulley System?
- Mikey Faye
- · Replies 5 ·
Calculating Osmotic Pressure Of Red Blood Cells
- devon
- · Replies 23 ·
Finding the Specific Activity of Rubidium Chloride
- Phillyfan321
- · Replies 3 ·
Calculating Heat Engine Efficiency: What is the Energy Input?
- kirsten_2009
- · Replies 2 ·
How Does Climbing Stairs Compare to Lighting a Bulb in Energy Use?
- kirsten_2009
- · Replies 9 ·
Special Relativity Spaceship Question
- Lucille
- · Replies 3 ·
RC circuit, expression for voltage
- nossren
- · Replies 4 ·
Propagating uncertainty when calculating acceleration due to gravity?
- Zane
- · Replies 3 ·
Designing a +10V Supply with Transistors: A Practical Approach
- irishhockey
- · Replies 1 ·
Applying PV=constant to find pressure and volume changes
- Arun Raja
- · Replies 5 ·
Finding weight from force components with trigonometry
- Mikey Faye
- · Replies 1 ·
Vaporisation of Water at different altitudes
- Dean Lovett
- · Replies 1 ·
Length contraction: Sheldon's meter stick at 0.6c relative to Sally
- Lucille
- · Replies 11 ·
Why Does Metal Require More Energy for Electron Emission?
- desmond iking
- · Replies 5 ·
Is My Calculation of Lorentz Transformation Correct for Δx and Δt'?
- elevenb
- · Replies 3 ·
What is the tension in each cable holding up a 100kg Halloween decoration?
- hamzaarfeen
- · Replies 3 ·
Maximum acceleration to prevent glass vase sliding off stacked packages
- hamzaarfeen
- · Replies 3 ·
Solving Box Pulling Problem: Accelerating Comics to Stuart's Store
- Evan Johnson
- · Replies 5 ·
Frictional Forces: Stacked boxes, pulley with weight.
- Cal Ripken
- · Replies 1 ·
Heat Flow Through Rock Layers Problem
- Nexttime35
- · Replies 6 ·
Is the 45-Degree Angle Between the Y-Axis and F2?
- Hr0427
- · Replies 5 ·
How Do You Calculate the Waist Radius and Location of a Gaussian Beam?
- danifire2
- · Replies 1 ·
Why do both falling balls have the same acceleration as gravity?
- omar1
- · Replies 5 ·
What is the Acceleration of Child 2 in a Two-Child Tug of War on Ice Skates?
- DanielC90
- · Replies 11 ·
Gravitational potential energy experiment
- Jimmy87
- · Replies 3 ·
Terminal Velocity's Relationship to Mass
- bistan
- · Replies 2 ·
How Do I Calculate Experimental Error in X-ray Diffraction?
- Lemenks
- · Replies 3 ·
Vector algebra - The velocity is given by
- lilyE
- · Replies 3 ·
Force at a particular point on a submerged vertical surface (other than Ycp)
- lechatelier
- · Replies 7 ·
What is the Centripetal Acceleration Problem Solution?
- Arun Raja
- · Replies 1 ·
Total resistive force by water and air on water skier
- trosenau
- · Replies 1 ·
Satellite in Orbit (Quiz#4, 26)
- gcombina
- · Replies 16 ·
Solving Archimedes Problem: Rod in Pool
- erisedk
- · Replies 2 ·
Energy Dissipation in a Time-Dependent Current Circuit
- DrIxn
- · Replies 11 ·
Solving for ds/dt: Is the Answer C?
- Arun Raja
- · Replies 1 ·
Velocity of an Object in Uniform Circular Motion
- Argella
- · Replies 2 ·
Solving Loudspeaker Delay in 30ms for 5.0m
- toothpaste666
- · Replies 7 ·
Relative motion of a cannonball/submarine
- ohphysics
- · Replies 9 ·
Twin Paradox: How Do We Calculate Ages and Coordinates in Different Frames?
- Lucille
- · Replies 1 ·
Vector Sum of Forces Experiment
- Kenny Wong
- · Replies 10 ·
Special Relativity: Object Motion and Time Dilation
- Lucille
- · Replies 4 ·
What is the vertical velocity of the rope just as it slides off the peg?
- SenatorAstro
- · Replies 7 ·
Effect of changing target metal to heavier metal in X-ray tube
- desmond iking
- · Replies 11 ·
Revolutions per second for hydrogen molecule
- Effect
- · Replies 9 ·
Distance traveled by a block due to unbalanced force
- Romel
- · Replies 2 ·
Problem with electric field and potential
- Frank Einstein
- · Replies 9 ·
Gravitational Field of a Uniform Rod
- nayo.666
- · Replies 7 ·
Reference Frames with Different Origins
- mailman123
- · Replies 4 ·
[Physics Honors] Finding magnitude
- choco1drop
- · Replies 2 ·
Understanding Simple Harmonic Motion: Explained in Simple Terms
- Arun Raja
- · Replies 3 ·
Understanding Amplitude and Waveforms
- Arun Raja
- · Replies 1 ·
What is the momentum transferred in a rubber ball collision?
- Arun Raja
- · Replies 1 ·
What is the Correct Concept for Solving the Stacked Blocks Problem?
- Arun Raja
- · Replies 2 ·
Carnot engine and refrigerator: why is work negative?
- Ki-nana18
- · Replies 2 ·
Oscillation frequency of electrons in atoms (Bohr model)
- Brianrofl
- · Replies 1 ·
Mechanical Advantage and What it really means (question inside)
- Hereformore
- · Replies 2 ·
Destructive and Constructive Interference for Sound Speakers
- alingy1
- · Replies 8 ·