Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Arrow striking falling sandbag from tower at 1.1 seconds
- Giygas72
- · Replies 2 ·
Finding out if work is done with between two points with same electric potential
- ehsan23
- · Replies 3 ·
What Is the Rate of Change of the Magnetic Field in This Circuit?
- aokidopi
- · Replies 14 ·
Circuits: What does the voltmeter read?
- Andy13
- · Replies 3 ·
Bungie jumper jumps of cliff. (Energy)
- bfusco
- · Replies 2 ·
Magnetic Flux through solenoid question
- TDean2010
- · Replies 2 ·
Why Is There a Reaction Force in the Upper Pulley but Not in System 1?
- jeremy222
- · Replies 3 ·
You have a fine wire with a cross sectional area of 9.4×10−10 m2
- Snape1830
- · Replies 14 ·
What is the Average Force Required to Climb a Slope at Constant Speed?
- wow22
- · Replies 2 ·
Resistors: Series/Parallel Current/Voltage Rules
- spock9000
- · Replies 1 ·
Relationship Between Kinetic Friction and Mechanical Energy
- velouria131
- · Replies 6 ·
Entropy change when two gas streams mix
- roam
- · Replies 9 ·
Calculating Amperes for converging electrical pathway
- Obama
- · Replies 7 ·
Energy stored in an inductor of an LR circuit
- OmegaFury
- · Replies 2 ·
When does the sum of two sinusoidal waves satisfy the wave equation?
- DeIdeal
- · Replies 1 ·
How Does Resistivity Affect Copper Wire Resistance and Current Flow?
- Snape1830
- · Replies 1 ·
Net magnetic field caused by current from two wires
- mm2424
- · Replies 3 ·
Relativistic dynamics-collision problem
- ladybeetle
- · Replies 2 ·
Efficiency Calculation for Mechanical System with Incomplete Information
- TyErd
- · Replies 6 ·
Heat radiated from within a shell
- sparkle123
- · Replies 2 ·
Show that if vv' = 0 (both vectors) then speed v is constant
- Keshroom
- · Replies 18 ·
Fluid Mechanics and SHM of spring
- nago
- · Replies 5 ·
Harmonic Potential of Non-Interacting Particles
- Lyons_63
- · Replies 1 ·
Efficence - Calculate the Force needed to life this load
- I-need-help
- · Replies 1 ·
Work-Energy Theorem question with not much detail to work with
- tbyrne
- · Replies 18 ·
Newton Law's of motion question
- Saitama
- · Replies 5 ·
Current carrying wire in uniform magnetic field; where is net magnetic field 0?
- mm2424
- · Replies 1 ·
Resistance of DC Motor Experiment
- bluey107
- · Replies 2 ·
A bullet strikes a block like boom boom pow
- Mdhiggenz
- · Replies 11 ·
The classic momentum transfer between balls question
- original
- · Replies 1 ·
Circular rotational motion (kinematics)
- dunn
- · Replies 3 ·
Finding acceleration on an elliptical path
- TyErd
- · Replies 36 ·
Particle moving in a one-dimensional potential
- Identify
- · Replies 8 ·
Find power when resistor, capacitor, and inductor are connected in a series
- jamiewilliams
- · Replies 1 ·
Change in charge on C2 when capacitor switch opens
- bob92
- · Replies 8 ·
Calculating Speed of a Charged Particle in Electromagnetism
- spock9000
- · Replies 7 ·
UCM - Derive speed, of a body moving, radius r, and the frequency f.
- MohammadG
- · Replies 1 ·
What Does 92.5 m/s Represent in the Equation (V2-V1)^2?
- TheronSimon
- · Replies 9 ·
Spring system: Relationship b/t mass and distance object travels
- sweetpete28
- · Replies 1 ·
What Is the Maximum Mass That Keeps Truss Forces Within Limits?
- JJRKnights
- · Replies 4 ·
Ball Acceleration and Trajectory Question
- hueyosie
- · Replies 2 ·
Concervation of Momentum: Bullet and Block of Mass
- sweetpete28
- · Replies 2 ·
What Is the Kinetic Energy of the Bigger Mass After an Explosion?
- Victorzaroni
- · Replies 4 ·
Shortest length of closed pipe that resonates with a 512 Hz tuning fork
- Exhausted
- · Replies 2 ·
Use the Sin Law to find angle C
- TheronSimon
- · Replies 4 ·
How Long Is the Wave Packet from a Radar Transmitter?
- lockedup
- · Replies 4 ·
Advanced Rotational Velocity Question
- Victorzaroni
- · Replies 3 ·
What Are the Final Angle and Force in an Elastic Collision with a Wall?
- bfusco
- · Replies 6 ·
Calculating Work and Force of Air Resistance on a Falling Pinecone
- shaggyace
- · Replies 2 ·
Magnetic Field of a Moving Point charge
- OmegaFury
- · Replies 2 ·
Finding speed from force-vs-position graph
- shaggyace
- · Replies 2 ·
Determine equation given 3 points and 2 lines
- euro94
- · Replies 1 ·
How to Model Aircraft Landing Gear Vibrations?
- pige
- · Replies 1 ·
Percentage uncertainty and percentage difference
- koat
- · Replies 1 ·
How Does a Bullet's Initial Speed Relate to Energy Conservation in a Collision?
- bfusco
- · Replies 8 ·
1 pulley, 2 masses, 2 inclines
- TheronSimon
- · Replies 3 ·
Thermodynamics : Heat transfer question.
- AlchemistK
- · Replies 1 ·
Calculating rms speed of hydrogen molecules
- amw2829
- · Replies 7 ·
Lever Formula: F*a=Q*b or Q*a=F*b?
- -Physician
- · Replies 5 ·
Ceramic ball falling and bouncing with halving coefficient of restitution
- corpuzdawn
- · Replies 1 ·
Why Is the Direction of Friction on Block A to the Right?
- theBEAST
- · Replies 9 ·
Work with varying forces. Work energy theory
- EEintraining
- · Replies 7 ·
Induced Emf in a Rectangular Coil
- member 217843
- · Replies 2 ·
Momentum and movement basic GCSE Quest
- nonthesecond
- · Replies 10 ·
Which pulley system requires the least force to lift the same weight?
- zizodev
- · Replies 2 ·
How much rotational kinetic energy does the disk have ?
- IntegrateMe
- · Replies 2 ·
Bullet-Block Collision: Solving for Initial Speed and Energy Dissipation
- bfusco
- · Replies 2 ·
Elevator falling on spring question
- tal444
- · Replies 19 ·
Special Relativity - Relativistic Dynamics
- Jonmundsson
- · Replies 1 ·
Why does rotational kinetic energy use the radius in this problem?
- pyroknife
- · Replies 1 ·
Work-energy theorem problems with swings and ax blades
- NguyenAdam
- · Replies 3 ·
Determining Work Based on a Charge and Particle
- rabiddogma
- · Replies 4 ·
Variable Resistror, Calculating Vo
- Jreyes613
- · Replies 13 ·
Maximum Compression of Spring in Spring Loaded Collision
- moonbase
- · Replies 5 ·
Cross Product application problem
- Asheram0
- · Replies 4 ·
Two colliding spaceships in Special Relativity
- shyguy79
- · Replies 6 ·
Impact force from 60-foot ski cliff jump into powder
- a_skier
- · Replies 7 ·
Energy Threshold for 2 proton -> 2 proton 1 Pion
- Goatsenator
- · Replies 7 ·
Calculating gear ratio for vertical climb
- Ortix
- · Replies 1 ·
Measuring specific heat capacity
- Janinever
- · Replies 8 ·
Finding the moment of inertia of a uniform square lamina
- kingkong69
- · Replies 6 ·
Reflected wave equation for rigid wall vs free end
- emailanmol
- · Replies 2 ·
Electric field of a cylindrical capacitor
- Eigenvaluable
- · Replies 1 ·
Would a water-filled ball or air-filled ball hit the ground first?
- zizodev
- · Replies 2 ·
If bar A moves right at a speed of x,how does bar B move?
- zizodev
- · Replies 3 ·
Refractive index and depth of object in water.
- heartOFphysic
- · Replies 8 ·
I am very lost with my physics homework.
- becca0402
- · Replies 1 ·
Angular velocity and acceleration of a rotating 4 kg object
- John78
- · Replies 3 ·
What is the Magnetic Vector Potential for a Given Magnetic Field?
- beth92
- · Replies 1 ·
Center of Mass boat distance from shore what am I doing wrong?
- sweetpete28
- · Replies 1 ·
Finding x(t) from a time dependant force
- Keshroom
- · Replies 12 ·
Mechanical apptitude to suggest the direction of action.
- zizodev
- · Replies 10 ·
Momentum: Nucleus decays into 3
- sweetpete28
- · Replies 4 ·
Quantum Mechanics Particle moving in 1-D potential
- 20930997
- · Replies 4 ·
2-body central force ( gravity ) problem
- jobendorfer
- · Replies 6 ·
Relating hanging washer weight to stopper tension in rotating string system
- Klymene15
- · Replies 4 ·
Direction of current flow in a circuit
- theBEAST
- · Replies 6 ·
Scale Hanging From Ceiling of Elevator Question
- hueyosie
- · Replies 3 ·
Where is the magnetic field zero between two antiparallel current-carrying wires
- nerdy_hottie
- · Replies 3 ·
What is the direction of acceleration for the block moving on the xy plane?
- MissEuropa
- · Replies 8 ·