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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Where Did F = dp/dt Originate?
- NooDota
- · Replies 1 ·
How Does Air Pressure Affect Curveball Distance in Different Ballparks?
- Alex Noel Cueto
- · Replies 2 ·
Angular Momentum in a pulley-block system
- Zynoakib
- · Replies 1 ·
Just trying not to look like an idiot to my wife
- JeremyCB
- · Replies 10 ·
Finding 2 of 3 Forces Given 1 and a Resultant
- cadcdac
- · Replies 9 ·
How to Solve an Ideal Gas Equation Problem with Changing Tire Pressures?
- Luchekv
- · Replies 7 ·
Tension in cable for descending elevator with downward acceleration
- Viraam
- · Replies 36 ·
Torque calculation for a classroom door handle
- Viraam
- · Replies 41 ·
Curl of the vector potential produced by a solenoid
- phy124
- · Replies 9 ·
Finding refractive index and interference order from microwave reflection
- SataSata
- · Replies 5 ·
Cylinder with point mass angular momentum
- D412
- · Replies 5 ·
Conducting sphere within a conducting shell
- Beatrix
- · Replies 3 ·
Electric force on a negative charge in a uniform field
- Hannahj1
- · Replies 1 ·
Calculating Work Done on a Hanging Chain Using Mass Density and Length
- MidgetDwarf
- · Replies 3 ·
Forces acting on a pulley question
- amanda.ka
- · Replies 15 ·
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 ·
Tension in two ropes pulling a barge with resultant force
- 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 ·
Do py and pz momentum operators commute?
- drFredkin
- · Replies 2 ·
Capacitor plate force when spring compresses and voltage doubles
- 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 ·
Finding plane heading to fly due north with crosswind using vector subtraction
- 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 ·
Shell theorem proof using divergence and symmetry without 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 ·
Net force on 2.0 nC charge from two other charges on x-axis
- 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 ·
Two balls from a 100m tower: when and where do 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 ·
Why does water boil faster in a copper-based kettle than stainless steel?
- gijoel
- · Replies 3 ·
Projectile launched into back of moving downhill vehicle
- 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 ·
Finding charge on two suspended pith balls from string angle
- Hannahj1
- · Replies 4 ·
Object moving through half circle: speed or velocity formula?
- Dennis Heerlein
- · Replies 8 ·
How Does Projectile Motion Affect a Ball Thrown Upward from a Building?
- VaioZ
- · Replies 3 ·