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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Friction Problem: Find Time to Rest w/ Force of 5.0 N
- Lobos Wolfen
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Simple Harmonics - Kind of wierd
- kevinr
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Locating Object and Image with Converging Lens
- sbe07phy
- · Replies 1 ·
What Happens to Amplitude When One of Two Glued Balls on a Spring Detaches?
- kevinr
- · Replies 7 ·
Linear Velocity at Top (Rotational Kinematics)
- ddrtrinity
- · Replies 1 ·
People run faster than they walk
- black_squirrel
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What is the ratio of the amplitudes of the two waves?
- mathcrzy
- · Replies 3 ·
Help with free body diagram for circular motion
- eggman2001
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Sweaty Biker and Energy Consumption
- yoshiko
- · Replies 1 ·
Find Average Acceleration of a Turning Car in 2.0s | Step-by-Step Guide
- sanado
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How Does Special Relativity Explain the Michelson-Morley Experiment Results?
- ultimateroxas
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How Far Must a Small Piston Be Pushed to Lift a Larger One by 20 cm?
- jacob.jonathon
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What Makes a Parachute Safe in Physics?
- NeKroA
- · Replies 4 ·
Determining length of highway deceleration ramp, with friction
- Satchmo
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Universal Gravitation Ice Rink Problem
- physicsbhelp
- · Replies 14 ·
Solve a Quick Math Question: How Many Sides in a Polygon w/ 119 Diagonals?
- get_rekd
- · Replies 2 ·
Satellite Problem: 2 Difficulties of Effective Communic.
- ultimateroxas
- · Replies 3 ·
AP Physics Free-Response Practice Question #2
- xpeachpleasurex
- · Replies 2 ·
Force between two parallel wires
- urszula
- · Replies 1 ·
AP Physics Free-Response Practice Question
- xpeachpleasurex
- · Replies 1 ·
How Can Torque Determine the Weight of an Unknown Object?
- ll Source ll
- · Replies 1 ·
Determination of planck's constant
- Ry122
- · Replies 9 ·
How much energy will be released when the meteor hits Jupiter?
- odie5533
- · Replies 4 ·
How Can You Design an FM Radio Receiver to Favor One Station Over Another?
- sbe07phy
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How Do You Solve Complex Force and Tension Problems in Physics?
- theresa d
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The Final Temperature and Remaining Ice in a Calorimetry Experiment
- olso4142
- · Replies 2 ·
How Do You Calculate the Line Integral of a Magnetic Field Between Two Points?
- aliaze1
- · Replies 1 ·
A Refraction of Light Question : Why Does Diamond Sparkle More? (Ans. )
- incognito301
- · Replies 1 ·
Levitating a rod - magnetic field/forces
- aliaze1
- · Replies 3 ·
Solving Nylon Rope Fracture Problem Up to 25 kg Lift Height
- ssjdbz101
- · Replies 4 ·
Torque - Finding the unknown weight
- ll Source ll
- · Replies 4 ·
Decibels and intensity of police car siren
- Aphrael
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Spring constant and oscillation frequency
- aligass2004
- · Replies 5 ·
What is the Initial Angular Acceleration of a Disk Released from Rest?
- klm
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Current Through First Resistor in a Parallel Circuit
- get_rekd
- · Replies 4 ·
Help find work done associated with electric potential
- trustabdy
- · Replies 9 ·
How many revolutions does a washing machine tub make during a spin cycle?
- ~christina~
- · Replies 7 ·
What Is the Average Speed of a Motorist Traveling Different Speeds?
- rcmango
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Calculate Intensity of Sound Wave at Cliff from Radio Source
- kokenwa
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A few problems (forces, energy, gravitation)
- Destrio
- · Replies 2 ·
What is the maximum angle for a ladder to lean against a wall without slipping?
- fifth0
- · Replies 2 ·
Constructive/Destructive Stereo Interference
- biomajor009
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Equillibrium ladder on a wall problem
- odie5533
- · Replies 4 ·
Finding the Minimum and Maximum Speed on a Sloped Surface
- NewatPhysics
- · Replies 6 ·
Direction of the frictional force
- rootX
- · Replies 2 ·
Calculating Spring Constant for SHM with Bullet Impact
- Aphrael
- · Replies 14 ·
Transverse Wave Homework Problem
- zjm7290
- · Replies 1 ·
What is the relationship between A_{c} and A_{s} in simple harmonic motion?
- Rubidium
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How Does Momentum Affect Motion in Different Scenarios?
- JRKnights014
- · Replies 2 ·
Difference between potential energy on Earth and in orbit
- Lorna
- · Replies 8 ·
Spring Problem and average force
- temaire
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What Are the Outcomes of a Tennis Ball and Basketball Elastic Collision?
- latitude
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Period/Frequency of a Rotational Object
- BBallman_08
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Solve Circuit: Find ΔQ for Switch T Turned Off
- hastings
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Calculating Crane Power with Constant Velocity: Two Homework Problems
- alex7298
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Sun and Earth Mass, Distance, and Center-of-Mass Problem: Exam Sample
- quickclick330
- · Replies 10 ·
Find Fundamental Frequency & Tension of Oscillating Wire in Tube
- ghetto_bird25
- · Replies 3 ·
What happens when a bug lands on a spinning sphere?
- Epiphone
- · Replies 9 ·
Potential Energy in to Kinetic Experiment
- Larrytsai
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What is the Next Step in Calculating Wavelength for Singly Ionized Helium?
- Ry122
- · Replies 9 ·
The Secrets of Simple Physics: 2 Problem Solutions Explained
- lusterjester
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Calculate the speed of the particle
- mkwok
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How many meters does the spring compress?
- linnus
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How Does Temperature Affect the Period of a Pendulum?
- BBallman_08
- · Replies 15 ·
How Does a Rotating Charged Particle Beam Maintain Focus?
- jughead4466
- · Replies 1 ·
Current balances & Electromagnet Induction
- PurpleMist
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Interference with two speakers
- gills
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How Does Non-Conservative Force Affect Mechanical Energy Along Different Paths?
- keltix
- · Replies 7 ·
What Is the Minimum Energy Required for a Proton to React with Lithium?
- Ry122
- · Replies 1 ·
Computing Mass of gas molecule from specific heat
- Saladsamurai
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Rotational Dynamics Practice Problems
- rwx1606
- · Replies 2 ·
Why Are Both Angles the Same in an Inclined Plane Pulley System?
- xcgirl
- · Replies 3 ·
Help with kinematics equations (d = v t and the projectile one)
- Jbum
- · Replies 12 ·
Physics Newbie Needs Help with Basic Problems
- lusterjester
- · Replies 1 ·
How Does Moving Closer to the Fulcrum Affect Teeter-Totter Balance?
- odie5533
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Calculating Energy Usage of a Hair Dryer
- aquamarine08
- · Replies 2 ·
How Does a Ladder in Equilibrium Affect the Forces on a Window and Ground?
- B-80
- · Replies 1 ·
Elastic collision in two dimensions
- linnus
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Understanding Vector Addition: Pythagorean Method vs. Direct Addition Explained
- MoreZitiPlease
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Biot-Savart Law & Magnetic Field: Clarification
- PFStudent
- · Replies 4 ·
About Kinetic energy of circular motion
- jack1234
- · Replies 6 ·
Distance between tourques/forces
- natedigity
- · Replies 1 ·
Solving Pendulum Problem (b): Kinetic & Potential Energy
- jack1234
- · Replies 4 ·
How can I calculate the force of friction on a rocket launched at school?
- xCanx
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Work Through a Displacement At An Angle
- mircobot
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What Happens to Momentum in a Perfectly Elastic Wall Collision?
- Dorney
- · Replies 5 ·
Understanding Cos and Sin: Tips for Using Trigonometry in Physics Problems
- chemboy
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How to Cut Metal to Produce Specific Musical Notes?
- BarCode
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Determine the fraction of the volume
- olso4142
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What is the velocity of m when it reaches point P?
- ahello888a
- · Replies 8 ·
Calculating Average Force on Landing: Understanding Momentum and Time
- Joza
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Fictitious force and accelerating airplane
- hotcommodity
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Spring Ramp Problem: Maximum Distance for Compressed Spring Calculation
- BBallman_08
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Why is mg=mv^2/r for centripetal motion instead of mg+T=mv^2/r?
- jack1234
- · Replies 3 ·
Relative Motion: Collision of Two Spaceships on Earth
- olga11
- · Replies 3 ·
What are the forces involved in this physics problem?
- godzillafan868
- · Replies 5 ·
How Fast and Powerful Was the T Rex?
- happyapple
- · Replies 1 ·
Conceptual question about torque and balls
- Niles
- · Replies 3 ·
Why Isn't the Child's Pulling Force Shown in the Free Body Diagram?
- jack1234
- · Replies 1 ·
Shotput problem involving projectile motion
- TopCat
- · Replies 4 ·