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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Buoyancy problem and density of ice
- ash4741
- · Replies 14 ·
Dot Product Issues Homework: Vector A and 4 Vectors
- Pupil
- · Replies 4 ·
What Is the Initial Temperature of Copper in a Mixed Substance System?
- bigboss
- · Replies 5 ·
How Deep is the Ocean Using Ultrasonic Waves?
- smillphysics
- · Replies 3 ·
Work energy theorem to find the maximum compression
- negatifzeo
- · Replies 2 ·
How can I calculate the mutual inductance between two rectangular loops?
- chrischros
- · Replies 1 ·
What is the Tension at the Ends of a Hanging Rope?
- Patta1667
- · Replies 6 ·
Is the Net Work Done Positive and Does It Function as a Heat Engine?
- groundhog92
- · Replies 1 ·
Solving Physics Exam Problems: Quadratic and Torque Examples
- donotremember
- · Replies 6 ·
Electron moving through a uniform magnetic field
- bioradical
- · Replies 1 ·
Conservation of Momentum Set-Up
- alexander_i
- · Replies 2 ·
What is the Density Ratio of a Submerged Ball in a Fluid?
- MyNewPony
- · Replies 2 ·
Non-uniform Hanging Bar: Finding the Center of Mass
- typeinnocent
- · Replies 11 ·
Answer: Rockets Colliding: Time Dilation from Earth to A's Frame
- C_Ovidiu
- · Replies 7 ·
Amusement Park Physics: Solving for Friction Force in a Spinning Cylinder
- PeterPumpkin
- · Replies 3 ·
Tangent force on a rotating rod
- abomination5
- · Replies 2 ·
Calculating Time to Reach Initial Velocity from Acceleration-Time Graph
- Mandavi
- · Replies 3 ·
Transmission Line - Solve for frequency subject to phase angle
- Andrusko
- · Replies 9 ·
Calculating Displacement Vectors for Jasmine and Jack's Bike Rides to School
- 123phy
- · Replies 13 ·
Calculating Horizontal Force to Accelerate Shopping Cart
- Dave25
- · Replies 13 ·
Need help going over a momentum/spring problem
- groundhog92
- · Replies 4 ·
Pendulum with adjustable lengths
- dipset24
- · Replies 1 ·
Simple Harmonic Motion and hung spring
- grandprix
- · Replies 8 ·
Temperature and Heat - what am i doing wrong?
- grandprix
- · Replies 3 ·
Train Collision: Will They Meet? Find Out!
- Dave25
- · Replies 8 ·
What Is the Net Magnitude of the Electric Field at y = 0.200m?
- Digdug12
- · Replies 1 ·
Buoyance - pressure on brick immersed in water
- bigboss
- · Replies 5 ·
How Do You Calculate Neutron Flux in Neutron Activation Analysis?
- cortiver
- · Replies 2 ·
Accelerating wedge with friction
- Patta1667
- · Replies 9 ·
Electrical Potential Difference between parallel plates
- flak-spammer
- · Replies 8 ·
What is the Height of the Cart When It Stops Rolling Up an Inclined Board?
- Walid11
- · Replies 9 ·
Mechanical Vibrations (Pendulums)
- dipset24
- · Replies 2 ·
Projectile Motion: Finding Rock's Min. Speed & Ball's Landing Point
- blackboy
- · Replies 26 ·
What is the Speed of the Cart Launched by a Spring?
- Walid11
- · Replies 1 ·
Why Is My Calculation of the Center of Mass for a Uniform Wire Incorrect?
- toastie
- · Replies 1 ·
Solving a Kirchhoff's Law Problem: Finding the Equation for a Highlighted Path
- ninjadrummer8
- · Replies 4 ·
Force on 3rd Charge w/ 7.98nC: 3.17E-5N
- Digdug12
- · Replies 1 ·
Mountain climber Equilibrium Question
- simondsaid
- · Replies 2 ·
Troubleshooting a Weather Balloon Expansion Problem
- PrideofPhilly
- · Replies 4 ·
Temperature Change: Sum of Daily Changes
- PrideofPhilly
- · Replies 3 ·
Coefficient of Restitution between two balls
- bijou
- · Replies 3 ·
Calculate Coulombs Law: Charge, Current, and Power in Electrical Circuits
- ydna7
- · Replies 4 ·
Calculating Resonant Frequencies of Closed Air Columns
- qszwdxefc
- · Replies 4 ·
Investigating Mechanics in Snooker Shots
- bijou
- · Replies 2 ·
Kinetic Friction of Blocks: Mass M & 2M, 0.500m/s^2
- JUniTo24
- · Replies 3 ·
Power Problem: Accelerating a Car over Track Distance
- twituksh12345
- · Replies 3 ·
How Do Kinetic and Potential Energies Change During a Ball's Ascent?
- nikan_ange
- · Replies 3 ·
Pulley and Mass on an Inclined Ramp
- theuniverse
- · Replies 3 ·
Conservation of kinetic energy and momentum in a collision
- sugaJ
- · Replies 2 ·
Solving Toboggan Homework: Work & Kinetic Energy
- Amar.alchemy
- · Replies 9 ·
Calculating Charge Transfer between Objects
- alithefickle
- · Replies 3 ·
What is the Fermi energy of metallic potassium at 0K?
- joel.martens
- · Replies 3 ·
Classical Mechanics - Pulleys System
- TomAlso
- · Replies 3 ·
How Does a Capacitor's Energy Change Over Time?
- ninjadrummer8
- · Replies 1 ·
How can capacitive reactance be zero for no capacitor?
- bobaustin
- · Replies 4 ·
Tug of War: Explaining Two True Statements
- annatar
- · Replies 2 ·
How Do You Calculate Tension in a String with Mass and Acceleration?
- rchenkl
- · Replies 1 ·
Quick Question About Photon Entering Atom
- Linday12
- · Replies 2 ·
What causes an object's acceleration to increase or decrease?
- bluejade
- · Replies 3 ·
Cube collision (with a pivot) and Angular momentum
- fblin
- · Replies 3 ·
Speed of car with changing mass problem
- bodensee9
- · Replies 1 ·
Another friction problem (rotational this time)
- groundhog92
- · Replies 1 ·
Find the tensions in the strings
- MyNewPony
- · Replies 2 ·
Friction Problem with Pulley System: Determining Acceleration and Force
- groundhog92
- · Replies 1 ·
How Do You Calculate State Changes in a Monatomic Gas Thermodynamic Cycle?
- rchenkl
- · Replies 1 ·
What Are the Core Postulates of Einstein's Special Theory of Relativity?
- rchenkl
- · Replies 5 ·
Work Done By Friction on a Circular Ramp
- MyNewPony
- · Replies 2 ·
Banked Frictionless Curve, and Flat Curve with Friction
- Digitalx04
- · Replies 1 ·
Linear momentum head on collision
- desixcutie04
- · Replies 8 ·
3 capcitors (series? parallel?) i cant tell
- ninjadrummer8
- · Replies 3 ·
Calculating Velocity of Bullet at Ground Impact
- theuniverse
- · Replies 1 ·
Determining drift velocity of electrons at specific temperature
- mlbqd3
- · Replies 1 ·
Measuring Density of Swimming Pool Water - Tips & Equations
- JPhysic
- · Replies 4 ·
Why Is Cosine Used to Calculate Induced Voltage in a Conductor?
- sponsoredwalk
- · Replies 1 ·
Help with calculating the range of error accleration
- Digitalx04
- · Replies 4 ·
Electricity- Power dissipation formula question
- cambalacus
- · Replies 2 ·
Calculating Gravity Using Angular Speed and Weight
- bodensee9
- · Replies 2 ·
How Much Water Escapes from a Pressurized Steel Vessel?
- 2020vision
- · Replies 10 ·
Rolling disk with point mass on edge
- vladimir69
- · Replies 4 ·
What is the dielectric constant of the slab on a parallel plate capacitor ?
- mba444
- · Replies 5 ·
How does Fermat's Principle apply to the concept of Heroes?
- nokia8650
- · Replies 2 ·
Fundamental Frequency of nylon string
- rchenkl
- · Replies 9 ·
Acceleration in one dimension
- yitriana
- · Replies 2 ·
Solve Frictionless Wedge Homework: Find Acceleration
- Patta1667
- · Replies 5 ·
Object Free fall quadratic equation problem
- Pupil
- · Replies 6 ·
Easy Question, but giving me trouble
- Dave25
- · Replies 4 ·
Maximizing Speed: Understanding the Pendulum Motion
- iagotr
- · Replies 3 ·
Relationship between momentum and acceleration, and force
- Self-Help
- · Replies 2 ·
What is the formula for the radius of a satellite's orbit?
- jacob117
- · Replies 8 ·
Two cars in different directions
- Dave25
- · Replies 4 ·
Finding Total Energy of a system
- ctamasi
- · Replies 7 ·
Are There Two Correct Ways to Draw a Reflected Ray in a Mirror?
- Mark1991
- · Replies 5 ·
How to solve for the capacitance of an interlocking plates
- mba444
- · Replies 4 ·
Solving for Mass in a Spring Scale Experiment
- bodensee9
- · Replies 5 ·
Is There an Error in the Angle Calculation for the Emergent Ray from a Prism?
- jemerlia
- · Replies 2 ·
Proving Vector Space of 3-Tuples Fulfilling 3x1 - x2 + 5x3 = 0
- alexngo
- · Replies 4 ·
Finding the Critical Angle of Glass in Water
- qszwdxefc
- · Replies 3 ·
How Does Bending Your Knees Reduce the Impact Force When Jumping?
- JaKaL
- · Replies 1 ·
Finding Maximum Force for Sled Without Lifting
- yitriana
- · Replies 2 ·
How Do I Isolate Velocity in the Lorentz Factor Equation?
- phys121
- · Replies 6 ·