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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Does the Coefficient of Static Friction Remain Constant Regardless of Mass?
- jamesyboy1990
- · Replies 11 ·
What Is the Average Acceleration of a Downhill Skier?
- never-enough21
- · Replies 5 ·
Electrostatic force components on corner charge in square array
- frankfjf
- · Replies 8 ·
Did the expanding gas do positive or negative work on the piston?
- AznBoi
- · Replies 6 ·
Video lectures for freshman electricity topics
- Theorotical
- · Replies 2 ·
Why is entropy zero for a Carnot engine cycle?
- AznBoi
- · Replies 1 ·
Is Internal Energy Always Dependent Only on Temperature in an Ideal Gas?
- AznBoi
- · Replies 11 ·
How Does Current Flow in a Multi-Loop Circuit with Multiple Voltage Sources?
- mbrmbrg
- · Replies 1 ·
Finding equilibrium position for charge q3 between two charged particles
- frankfjf
- · Replies 2 ·
Relating a massive pulley system to an equivalent massless pulley setup
- BLam417
- · Replies 1 ·
When Should You Use the Delta Symbol in Equations?
- AznBoi
- · Replies 5 ·
How Do You Convert Micrometers to Meters?
- frankfjf
- · Replies 1 ·
How Do You Calculate the Focal Lengths of Microscope Lenses?
- strawberry7
- · Replies 1 ·
The Electric Potential Difference Created by Point Charges
- eclecticist
- · Replies 3 ·
What Is the Cyclist's Power Output to Climb a 7.0 Degree Hill at 5.0 m/s?
- ammu
- · Replies 6 ·
Why Do X-Ray Spectra Involve Inner Electron Shells?
- AznBoi
- · Replies 5 ·
Some more trouble with Electric Charge Problems
- frankfjf
- · Replies 8 ·
Classic Vehicle Collision scenario
- adamrobarts
- · Replies 6 ·
Beat frequency from ultrasound reflected by moving blood
- cyberdx16
- · Replies 2 ·
Different kinds of Kinetic energy
- AznBoi
- · Replies 4 ·
2 Way lightbulb with different power
- t_n_p
- · Replies 2 ·
How Is the Initial Velocity of Ball B Calculated in Kinetics Problems?
- budynavan
- · Replies 1 ·
How do you know which variables in an equation are constant?
- AznBoi
- · Replies 3 ·
Physics Practice test questions
- AznBoi
- · Replies 4 ·
How to Calculate Principal Stresses in a Stressed Component?
- cabellos
- · Replies 3 ·
Net Charge of Cube: -2385075 uC
- irnubcake
- · Replies 1 ·
Current and voltage in series resistors with 12V source
- claudiadeluca
- · Replies 1 ·
Charge distribution between two conducting spheres at equilibrium
- claudiadeluca
- · Replies 2 ·
How Does Light Wavelength Affect LDR Output in Plant Growth Lamps?
- Alecdrew
- · Replies 1 ·
What Is the Total Capacitance of a Square Circuit with Identical Capacitors?
- claudiadeluca
- · Replies 1 ·
Light bulb resistance for 60W at 220V
- claudiadeluca
- · Replies 1 ·
How to Derive Voltage Across Capacitors in Series?
- superdave
- · Replies 6 ·
How does changing R7 affect voltage between points A and E?
- t_n_p
- · Replies 8 ·
Finding the direction of the force (right hand rule)
- t_n_p
- · Replies 15 ·
Energy released in nuclear fission
- AznBoi
- · Replies 3 ·
How do you determine the charge of nuclei?
- AznBoi
- · Replies 12 ·
Electric charge and total force
- Rasine
- · Replies 10 ·
Conservation of Energy question :cry:
- rootX
- · Replies 2 ·
The ballistic pendulum and friction.
- leykis101
- · Replies 1 ·
Caculating linear speed of a vehicle
- dan_bighit
- · Replies 7 ·
Calculating Percentage Error in Canyon Depth Ignoring Sound Time
- munther
- · Replies 9 ·
Thermal Dynamics- heating gas in a flask.
- CurtisB
- · Replies 6 ·
What Are Some Good Websites to Learn About Electricity?
- unique_pavadrin
- · Replies 2 ·
Capacitor Energy in an RC Circuit
- t_n_p
- · Replies 11 ·
A few question on torques and periodic motion.
- MathematicalPhysicist
- · Replies 5 ·
Why Do Beginner Physics Students Struggle with Simple Questions?
- moshilover
- · Replies 6 ·
What causes attraction and repulsion between magnetic poles?
- pharaoh
- · Replies 1 ·
How Do You Calculate Diagonal Resistance in a Circuit?
- washablemarker
- · Replies 13 ·
Can vector fields dependent on velocity or time be conservative?
- neelakash
- · Replies 2 ·
What is the electric charge of an isolated copper ball bombarded with radiation?
- liorda
- · Replies 2 ·
Determine the magnitude of the force exerted on the block
- EG78362
- · Replies 3 ·
Photoelectric Effect with changing electric field
- liorda
- · Replies 2 ·
Superman's Race: Friction Coefficient and Finishing Time
- f(x)
- · Replies 3 ·
What is the Charge on a Suspended Oil Drop in Millikan's Experiment?
- washablemarker
- · Replies 2 ·
Find the coefficient of restitution between the balls (should be easy)
- daletron
- · Replies 3 ·
Final Temperature After Phase Change and Transfer of Energy
- washablemarker
- · Replies 2 ·
Absorbtion and Emission of Photons
- AznBoi
- · Replies 1 ·
Thermometer Height Conversion at Different Temperatures?
- Weave
- · Replies 7 ·
How to calc human bicycle power in watts
- Dyllon
- · Replies 1 ·
Probably Simple 1D Kinematics problem
- ccgrad05x2
- · Replies 7 ·
Deriving equation for force from pressure that varies with water level
- cientifiquito
- · Replies 2 ·
Magnetic Field at the Center of a Coil
- Dart82
- · Replies 3 ·
Photoelectric and Compton Effects question
- pharaoh
- · Replies 1 ·
Projectile fired from rail gun rises to height ¼R
- newtonistheman
- · Replies 6 ·
What is the Lagrangian of a Pendulum with Oscillating Top Point?
- the keck
- · Replies 2 ·
Review needed for Electric Charge Problem
- frankfjf
- · Replies 14 ·
Optics did my professor screw up?
- Dart82
- · Replies 2 ·
What Happens to the Missing Energy in an Inelastic Collision?
- leykis101
- · Replies 5 ·
What is the Maximum Induced emf of a Rotating Loop?
- mbrmbrg
- · Replies 5 ·
Calculating Heat Needed to Melt Metal
- Weave
- · Replies 7 ·
Final Exam Prep: Practice Question
- vle1
- · Replies 1 ·
What is causing confusion in the concept of length contraction?
- chris12345
- · Replies 4 ·
Induced emf generation problem
- mbrmbrg
- · Replies 4 ·
Why is heat capacity at constant volume zero in an isothermal process?
- grscott_2000
- · Replies 5 ·
How to solve the infinete resistor network
- DAKONG
- · Replies 3 ·
How Do You Calculate Orbital Speed Using Kepler's Laws?
- vle1
- · Replies 2 ·
Satellites in orbit such that they look like they don't move
- newtonistheman
- · Replies 4 ·
How Do Electrons Interact at a Distance of One Meter?
- natalia123
- · Replies 2 ·
How are Energy and Momentum related?
- AznBoi
- · Replies 5 ·
How to Calculate Distance on an Incline with Friction
- f(x)
- · Replies 8 ·
Physic Question: Get Full Explanation
- vle1
- · Replies 1 ·
Why is the position of the wire important for Ampere's Law to hold?
- mbrmbrg
- · Replies 6 ·
Proving the Irrotational Property of Vector Fields with an Example Solution
- neelakash
- · Replies 1 ·
Mechanics: Feasible lab report 4000 words long?
- kyoran
- · Replies 4 ·
How Do Spacecraft Velocities Change in Different Orbits?
- Kelseywelsey
- · Replies 1 ·
Acceleration in an Elevator: Solving Newton's Second Law Problem
- hghwinds
- · Replies 2 ·
Ratio of a ray of light with a refracted ray
- anantchowdhary
- · Replies 10 ·
Electrons in a uniform electric field.
- lord_blurg
- · Replies 1 ·
Few random questions collision, circular orbit, trajectory, etc
- bgggsob
- · Replies 2 ·
Objective confusion-Interference and Diffraction
- AznBoi
- · Replies 1 ·
Rolling without slipping problem
- ph123
- · Replies 7 ·
Particle in Magnetic Field: Conceptual
- mbrmbrg
- · Replies 4 ·
Magnetic field between two long straight wires
- cjbreen
- · Replies 6 ·
Does the Right Hand Rule Determine Current Direction Without Acceleration?
- Ry122
- · Replies 1 ·
Calculating Simple Harmonic Motion Parameters for a 10.0kg Mass
- newtonistheman
- · Replies 2 ·
Convex lens moved 16cm between two real images on fixed screen
- toolcake
- · Replies 6 ·
Weight and Force in a Hanging Cabin
- f(x)
- · Replies 2 ·
When is the Resultant Vector Calculated and What is the Formula?
- daisy7324
- · Replies 3 ·
Calculating voltage across resistors
- ingram010
- · Replies 3 ·