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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Acceleration and Tension in Multiple Pulleys
- Lanox
- · Replies 7 ·
Using dimensions to derive an equation
- Darren Byrne
- · Replies 1 ·
How the current remains same in series circuit?
- 123kid
- · Replies 2 ·
Atwood machine with pulley: tension and acceleration analysis
- naganalf
- · Replies 2 ·
How Long Does an Electron Accelerate in a Particle Accelerator?
- RyanH42
- · Replies 3 ·
Can someone double check my answers to this practice exam?
- RUphysics3
- · Replies 7 ·
Calculating Pump Power and Fountain Height from Water Ejection Speed
- amanda.ka
- · Replies 20 ·
Speed of alpha particle ejected from uranium decay
- Shakenbake158
- · Replies 3 ·
How Do You Derive the Distance Traveled by a Projectile in a Viscous Liquid?
- romiomustdie
- · Replies 44 ·
Why doesn't the neutral pion annihilate with itself?
- Mathilda
- · Replies 1 ·
How do I use equations to solve a physics problem and reach the final result?
- Drizzy
- · Replies 10 ·
Pigeon two car and a Motion Question
- RyanH42
- · Replies 2 ·
How do I find the motion equations from this problem?
- RyanH42
- · Replies 14 ·
Relating Newton's Force to Black Holes (Calculation?)
- alphaj
- · Replies 4 ·
Two cannons, different heights and initial velocities
- Walter303
- · Replies 4 ·
Electric Potential -- work due to a non-conducting ring
- m305
- · Replies 1 ·
How Do You Calculate Change in Momentum Without Mass?
- amanda.ka
- · Replies 3 ·
Finding current and voltage with a zero resistance branch in the circuit
- crom1
- · Replies 6 ·
Electrostatic potential inside/outside sphere
- j3dwards
- · Replies 1 ·
Centripetal Forces and Roller Coasters
- RoyceB
- · Replies 1 ·
Infinitesimal Electric field of slice of disk
- j3dwards
- · Replies 3 ·
Newton's 2nd Law: Calculate Mass of Cart
- Igniuxx6
- · Replies 20 ·
Angular acceleration at the bottom
- kolua
- · Replies 18 ·
Find height, range and time of flight for projectile motion
- Robb
- · Replies 7 ·
What are Oniums and How Do They Exist?
- Mathilda
- · Replies 5 ·
Kinetic energy of conductor slab inserted into capacitor
- PhysicsPrincess
- · Replies 7 ·
Why does my torque equation at point A have two unknowns?
- Ivan Antunovic
- · Replies 6 ·
Calculating Rebound Height for a Ball Colliding with Steel Plate
- Arlan
- · Replies 6 ·
Specific heat capacity coursework
- kieyard
- · Replies 3 ·
Water at 0°C mixed with ice at −20°C
- Joe brewer
- · Replies 20 ·
How Is Magnetic Flux Calculated Through a Square Loop Inside a Solenoid?
- DaveTan
- · Replies 4 ·
What are the units for a in Kepler's 3rd law?
- Calpalned
- · Replies 3 ·
Rotational Acceleration of an Amusement Park Carousel
- kolua
- · Replies 6 ·
Calculating something wrong with Poiseuille's Law
- dvora
- · Replies 7 ·
Which one of these motions is at constant acceleration?
- Lilygu3
- · Replies 3 ·
Basic Electric Field in Conductor Principles
- FallenLeibniz
- · Replies 1 ·
Work on a whirling mass (Kleppner 2nd ed 5-5)
- TimSon
- · Replies 1 ·
How Does Weight Affect Speed of a Soap Box Car?
- Haleybell514
- · Replies 3 ·
Average Energy Density of Capacitor
- xSpartanCx
- · Replies 2 ·
Modeling an Asteroid's Trajectory Towards the Sun Using Differential Equations
- Crush1986
- · Replies 42 ·
Asteroid falling from Kuiper belt to Earth orbit
- Mark Brewer
- · Replies 16 ·
Can the Work-Energy Theorem Determine Speed for Variable Acceleration?
- PAstudent
- · Replies 5 ·
Calculating Race Time and Length with Different Speeds and Rest Periods
- Optikspik
- · Replies 2 ·
Mechanical waves transmission through different mediums
- **Mariam**
- · Replies 2 ·
Zero Velocty is Constant Velocity?
- RyanH42
- · Replies 3 ·
Centripetal Forces and Speed Question
- RoyceB
- · Replies 1 ·
Easy university problem Newton's 2nd law
- Optikspik
- · Replies 9 ·
Two capacitors in parallel rearranged
- haikuberryfin
- · Replies 4 ·
Coefficient of friction on an inclined plane?
- Sharlyn
- · Replies 2 ·
Velocity and acceleration of mass in a slot on a rolling disk with angular velocity Ω
- zealeth
- · Replies 3 ·
Angular momentum about inconvenient pivot point
- kittyset
- · Replies 1 ·
Block moving on a horizontal surface
- Vibhor
- · Replies 8 ·
Banked curve: why only normal force provides centripetal force?
- dragonx47
- · Replies 4 ·
Velocity of Center of Mass of Disk
- Tanya Sharma
- · Replies 17 ·
Magnetic bar rotates rather than oscillates when magnetic fi
- Mddrill
- · Replies 4 ·
Forces, Friction and James Bond
- SilentBronco
- · Replies 8 ·
Charge and Electric Field Problem
- Callix
- · Replies 6 ·
How Do You Calculate Acceleration and Distance in Physics Problems?
- ElegantSir
- · Replies 10 ·
Helicopter Velocity - Calculating Speed of Air
- Drizzy
- · Replies 3 ·
Cement falling into a moving trailer momentum problem
- Drizzy
- · Replies 4 ·
Magnitude of the average force exerted by ground on a ball.
- NinjaChachi
- · Replies 3 ·
Electron velocity through earth's magnetic field
- sa1988
- · Replies 2 ·
Finding the potential V and electric field E
- Abdul.119
- · Replies 7 ·
Can the Ideal Gas Law Adequately Explain Argon and Xenon Gas Behavior?
- sa1988
- · Replies 11 ·
Fill in the empty columns of a work/power table
- ElegantSir
- · Replies 5 ·
Finding initial velocity of an object reaching 10 m high
- Blobikins
- · Replies 15 ·
How long does it take a football to reach max height?
- DeathEater
- · Replies 3 ·
What will be the horizontal acceleration
- JaZZyCooL
- · Replies 5 ·
How to Calculate Power and Energy Usage for a TV and Clothes Dryer
- ElegantSir
- · Replies 2 ·
Why do I not get the same result when I use change in PE?
- Faris Tulbah
- · Replies 3 ·
Two objects acceleration problem
- MightyDogg
- · Replies 3 ·
How to find wavelength of wave?
- songminho
- · Replies 4 ·
Finding the Landing Point of a Missile Dropped from a Plane at an Angle
- DeathEater
- · Replies 9 ·
Girl running after a bus, kinematic equations.
- LogarithmLuke
- · Replies 3 ·
Equations for instantaneous displacement of a particle
- AJDangles
- · Replies 16 ·
Airplane velocity with wind resistance using vector addition
- Dhyan Patel
- · Replies 3 ·
Angular acceleration of a stick with two masses at different positions
- kitsh
- · Replies 1 ·
Bernoulli's equation and (mostly) sealed containers.
- frypan99
- · Replies 2 ·
Finding velocity of charged object in electric field
- Callix
- · Replies 16 ·
Deriving Kinematics Equations from First Principles
- jackrc11
- · Replies 3 ·
Finding launch angle and velocity
- Forrest
- · Replies 16 ·
Finding net force or acceleration given 2 masses
- BSY
- · Replies 13 ·
Why does pressure not depend on the shape of the container?
- ollien
- · Replies 10 ·
A 470g firework is traveling straight up at 13 m/s
- robbyrandhawa
- · Replies 19 ·
How to find the maximum/terminal velocity?
- Jessica Lewis
- · Replies 1 ·
Gravitational attraction of plumbline
- TimSon
- · Replies 8 ·
Shock Waves Traveling to the Ground from a Jet
- Barry Melby
- · Replies 2 ·
Waves: determining the max distance of a traveling wave
- Barry Melby
- · Replies 1 ·
Refraction and Snell's Law, A complex question
- Oguzhan
- · Replies 12 ·
Half atwood machine with accelerating pulley
- krackers
- · Replies 19 ·
How Many Frames Are Needed to Show a 2 Hour Motion Picture on 35 cm Film?
- RyanH42
- · Replies 4 ·
How Long Does It Take a Ball to Hit the Ground If Thrown Downward?
- MRi04
- · Replies 10 ·
Force and Potential Energy Coordinates
- teme92
- · Replies 16 ·
How Do Rollercoasters Use Circular Motion and Acceleration?
- helpme101
- · Replies 4 ·
Projectile - 2D motion - incline - acceleration
- KUphysstudent
- · Replies 19 ·
How Should the Rescue Boat Adjust Its Heading if the Child Swims Upstream?
- kubaanglin
- · Replies 4 ·
Calculating Atmospheric Pressure at High Altitudes Using Quantum Mechanics
- max1995
- · Replies 2 ·
Where should a third charge be placed for zero net force?
- max1995
- · Replies 8 ·
It's a work and energy question
- Dirx
- · Replies 1 ·
Solving an RC circuit using explicit euler
- yugeci
- · Replies 7 ·