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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Hypodermic Needle Fluid Dynamics
- Adam Quinn
- · Replies 25 ·
Determine the value of a decay constant
- Kingyou123
- · Replies 13 ·
Could electromagnetism work in a catapult?
- Hugo Camus
- · Replies 4 ·
Potential Energy of a 2D Crystal Lattice
- SquidgyGuff
- · Replies 6 ·
Specific heat capacity of metal
- Vir
- · Replies 3 ·
How Do I Resolve Discrepancies in Magnetic Circuit Calculations?
- c.jinkuan
- · Replies 9 ·
Equivalent Resistance between A and D
- FamishedPluto7
- · Replies 6 ·
Equations of Kinematics, including gravity
- Runner1598
- · Replies 3 ·
How Long Does It Take for Electro-Fiasco I to Travel 1.0 km from Start to Stop?
- PFuser1232
- · Replies 3 ·
How is Wave Intensity Calculated?
- Janiceleong26
- · Replies 6 ·
Calculating Distance with Non-Uniform Acceleration
- SammyD97
- · Replies 15 ·
Particles Statics: Tension in Ropes & Angle Alpha
- David Donald
- · Replies 7 ·
Solving a Kinematics Problem: Throwing a Ball to Clear a Peaked Roof
- Nishikino Maki
- · Replies 4 ·
Finding kilograms of water on a spherical planet
- PAstudent
- · Replies 4 ·
How Does the Work-Energy Theorem Apply to a Slipping Chain?
- Titan97
- · Replies 9 ·
When does the bead fly off the rod?
- Adoniram
- · Replies 1 ·
Momentum and Conservation of Momentum Problem
- ilanmichaeli
- · Replies 2 ·
Acceleration of mass with friction
- Jonski
- · Replies 16 ·
Solving rotational motion without torque
- Zynoakib
- · Replies 12 ·
Frictional Force on ball rolling down incline
- Alex22
- · Replies 3 ·
Unable to solve rotation KE problem using torque
- Zynoakib
- · Replies 1 ·
Easy statics problem -- Block being hoisted by a pulley and rope
- Oxford365
- · Replies 14 ·
Wave propagation with water moving
- fish.frog
- · Replies 3 ·
Electric Potential due to two charges
- Mnemonic
- · Replies 7 ·
What is the specific heat of boiling water converting into steam?
- Kehkashan
- · Replies 7 ·
Are py and pz Compatible Operators in Quantum Mechanics?
- drFredkin
- · Replies 2 ·
Spring & Capacitor Homework: Equations & Solutions
- Vibhor
- · Replies 8 ·
Magnetic field due to a loop within the area of the loop
- Yashbhatt
- · Replies 16 ·
Diffraction grating that gives max intensity
- toforfiltum
- · Replies 19 ·
DC Current: RA1, RA2, RA3, I1, I2, I3
- gruba
- · Replies 6 ·
Resistance of thermistor in hot water as it cools
- Barclay
- · Replies 9 ·
Moving on a spinning chair initially at rest
- alec_grunn
- · Replies 4 ·
Block and disk on double inclined plane
- naianator
- · Replies 4 ·
Problem of a tank with trapezoidal section.
- Queren Suriano
- · Replies 9 ·
Calculating the total and partial pressure of gas mixture
- Lester_01
- · Replies 1 ·
Finding out the type of central force given the orbit
- saadhusayn
- · Replies 1 ·
An accelerating conveyor drags a box
- Karol
- · Replies 12 ·
What is the definition of net upward force?
- Palak Verma
- · Replies 4 ·
Motion vector subtraction, my attempts and where i'm stuck
- victorhugo
- · Replies 7 ·
Calculating Time for Acceleration of Motorcycle Cop
- hahame
- · Replies 1 ·
How Does Doubling the Slope Affect Velocity and Mass Data?
- hahame
- · Replies 2 ·
Proving the Shell Theorem: A Simplified Approach Using Symmetry and Gauss's Law
- justinben
- · Replies 3 ·
Disk falling while rotating round a point
- Karol
- · Replies 3 ·
Vector Addition. Where did I go wrong?
- Scorry
- · Replies 5 ·
Particle Physics: Net Force on Charge q1 Calculation
- Amelia
- · Replies 13 ·
Electric potential at center of charged rod
- gruba
- · Replies 1 ·
Electric Field Distribution in a Split Conductor with Variable Conductivity
- gruba
- · Replies 1 ·
Mean power dissipated in resistor in ac circuit
- toforfiltum
- · Replies 4 ·
Work done by a conservative force
- Titan97
- · Replies 7 ·
A ball is thrown up at 20 m/s at an agle of 15 degrees
- WeldingStuff
- · Replies 7 ·
A Ball Is Thrown Vertically Upwards, Find The Ratio of PE to KE
- Priyadarshini
- · Replies 31 ·
Moving frame in a magnetic field
- kaspis245
- · Replies 15 ·
Two Potentially Easy Kinematics Problems (sliding/rotation)
- Adoniram
- · Replies 27 ·
Refrigerator and Heat Pump question (Very Important)
- KingDaniel
- · Replies 2 ·
How Much Force is Needed to Hold a Hose Emitting Water at 20 m/s?
- Priyadarshini
- · Replies 8 ·
Particle sliding down a sphere - When does it leave the sphere?
- Adoniram
- · Replies 6 ·
Chain-link conversion for money
- Mr Davis 97
- · Replies 2 ·
How Is Total Pressure Calculated in Water?
- NooDota
- · Replies 4 ·
Electrostatics: Find relative permitivitty
- gruba
- · Replies 1 ·
Is there constructive or destructive interference?
- thalassa
- · Replies 20 ·
Throwing and dropping two balls: Find height where they meet
- Tulpje
- · Replies 5 ·
How Does Light Reflect in an Ellipse to Connect Its Foci?
- Sobhan
- · Replies 1 ·
Small sphere rolling off the top of a large sphere
- myko
- · Replies 5 ·
How Do You Calculate Frequency from Wave Loops and Travel Time?
- ElegantSir
- · Replies 6 ·
Force, Impulse and a Changing Mass system
- Beno123
- · Replies 13 ·
Center of mass and Newton's laws of motion
- Avaron Cooper
- · Replies 15 ·
Basic vector addition - my attempts
- victorhugo
- · Replies 7 ·
Vector subtraction and addition questions
- victorhugo
- · Replies 4 ·
How Do You Calculate the Surface Charge Density on a TV Screen?
- UF6
- · Replies 1 ·
Could Someone Look Over My Work? (particle accelerator design problem)
- UF6
- · Replies 7 ·
Calculate speed 5 meters from the end of path
- gijoel
- · Replies 49 ·
Highest velocity reached on a hill
- Drizzy
- · Replies 36 ·
How far is the Earth from the sun?
- Beanie
- · Replies 3 ·
A Uniform Rod Is Attached To A Point With A String---Moments
- Priyadarshini
- · Replies 8 ·
Comparing the boil time for a copper and steel kettle
- gijoel
- · Replies 3 ·
What direction would you take answering this question?
- p3nny96
- · Replies 7 ·
Momentum problem -- Two bullets fired into a block
- Zynoakib
- · Replies 7 ·
Bicycle Translational Acceleration vs Angular Acceleration
- UMath1
- · Replies 121 ·
Book wrong? Ohms law, Graph, wire, slope change question
- Barclay
- · Replies 44 ·
Refrigerator and Heat Pump question
- KingDaniel
- · Replies 5 ·
Change in ammeter reading due to change in resistance
- toforfiltum
- · Replies 18 ·
Calculating force and work done with 3D vectors
- r.physics
- · Replies 2 ·
Calculating Charge on Two Pith Balls Using Coulomb's Law | Homework Help
- Hannahj1
- · Replies 4 ·
Where did I go wrong? (an object moves through a half circle)
- Dennis Heerlein
- · Replies 8 ·
How Does Projectile Motion Affect a Ball Thrown Upward from a Building?
- VaioZ
- · Replies 3 ·
Experiment of water defection with a charged rod
- Barclay
- · Replies 19 ·
Determine the force constant of the rubber band
- amanda.ka
- · Replies 6 ·
Magnetic Field -- Some help with the right hand rule please
- Mary1910
- · Replies 1 ·
What affects the intensity of different coloured lights?
- Breanna
- · Replies 5 ·
Find the angular acceleration of the rod
- lion_
- · Replies 5 ·
Car velocity and acceleration from v(t)=7.20t-0.720t²
- VaioZ
- · Replies 15 ·
Heat energy dissipated between two conducting shells
- Arka420
- · Replies 20 ·
Calculating Frequencies of Speakers using Interference Patterns
- Hannahj1
- · Replies 1 ·
Calculating the velocity of an object down a varied slope inclined plane
- dougk
- · Replies 4 ·
Solving Momentum and Newton's Law: Ike and Jim's Truck Physics Problem
- Charles W
- · Replies 12 ·
Sea level change as ocean surface warms
- bwilson4web
- · Replies 10 ·
Bullet stuck into a ball and rotates it
- Karol
- · Replies 5 ·
Projectile Motion Homework: Solving for Time, Position, and Velocity
- VaioZ
- · Replies 5 ·
Newton's Law: Relation b/w tA & tB
- Titan97
- · Replies 13 ·
High Drift Velocities in Silicon vs Metals: Explained
- Depasquale97
- · Replies 1 ·