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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Associative Operation with Four Vectors: Is it True?
- bgy
- · Replies 2 ·
Pythagorean Theorem and Pendulums
- Soley101
- · Replies 5 ·
How Does a Copper Wire React in a Magnetic Field?
- Ry122
- · Replies 4 ·
Uncertainty/errors in meter stick measurements
- _Greg_
- · Replies 3 ·
How Do You Calculate Acceleration of Sliding Rocks on a Hill?
- kar_04
- · Replies 4 ·
Calculating/Simulating Vehicle Braking Force
- Gazzoo
- · Replies 1 ·
How does the radius of a star affect the temperature of a planet orbiting it?
- FunkyDwarf
- · Replies 2 ·
Finding coefficient of kinetic friction for chair pushed by spring
- kar_04
- · Replies 1 ·
Applying right hand rule and Lorentz force law with electrons
- grscott_2000
- · Replies 1 ·
Vector addition - Finding V2 when V1 and V1+V2 are given
- exi
- · Replies 6 ·
Calculating Planck's constant from LED experiment.
- Checkfate
- · Replies 1 ·
Electron transition emitting 9.38 × 10^-8 m wavelength in hydrogen
- shanktank
- · Replies 11 ·
AC vs DC current Tesla vs Edison
- shanktank
- · Replies 7 ·
Electromagnatism - Find charge deos this sphere have
- uniidiot
- · Replies 11 ·
Pushing object up incline - no friction
- curiousgeorge99
- · Replies 8 ·
Solve Centripetal Acceleration at 0.050m from CD-ROM Center
- scw287
- · Replies 12 ·
Does Terminal Velocity Affect Electrons in Magnetic Fields?
- The_Teacher
- · Replies 4 ·
Orientation Q: Plane Wave Propagation in Air
- WolfOfTheSteps
- · Replies 1 ·
Calculating String Tension in Rotational Motion: m, r, v0, g
- eyehategod
- · Replies 4 ·
Is n = sin(30°)/sin(15°) the correct refractive index?
- raman911
- · Replies 4 ·
Calculating Maximum Velocity of a Pendulum with Given Length and Amplitude
- Soley101
- · Replies 13 ·
Can I get the archive of all the past questions that have asked so far?
- rootX
- · Replies 4 ·
What Time Do Clock Hands Align After 2:00 PM?
- MJC8719
- · Replies 8 ·
How Do You Calculate Velocity from Kinetic Energy?
- curiousgeorge99
- · Replies 2 ·
Magnitude of the change in momentum
- t_n_p
- · Replies 7 ·
Finding Direction of Boat Movement: Bearing Calculation
- Lavace
- · Replies 2 ·
Ferris wheel RPM for weightlessness at the top
- curiousgeorge99
- · Replies 13 ·
Negative support reaction? (Statics)
- asucho3
- · Replies 2 ·
Race car average speed problem: 100 km total
- astudentinneed
- · Replies 2 ·
Understanding Escape Velocity and Gravitational Potential Fields
- perfectz
- · Replies 10 ·
Focal length calculation and graph Q
- _Greg_
- · Replies 3 ·
How Do You Calculate Displacement in Vector Kinematics?
- Tiplerfan
- · Replies 1 ·
At what time does the motorcycle overtake the car?
- t_n_p
- · Replies 4 ·
Is the magnetic force on a moving charge conservative?
- loom91
- · Replies 9 ·
Person jumping onto rotating merry-go-round initial kinetic energy
- MJC8719
- · Replies 2 ·
Real Question This Time about a Merry go Round
- MJC8719
- · Replies 3 ·
Different subsidiary notes with varying amplitudes
- ritwik06
- · Replies 3 ·
Critical angle for light traveling from diamond into water
- AlanxD
- · Replies 7 ·
Which Class Do These Levers Belong To?
- ritwik06
- · Replies 4 ·
Why ignore heat from condensed steam cooling in calorimetry
- ritwik06
- · Replies 6 ·
Why does a disk go farther up an incline than a ring if they start with the same velocity?
- eyehategod
- · Replies 2 ·
Turntable rotation rate Problem
- BMWPower06
- · Replies 3 ·
Rotational energy of two orbiting astronauts connected by rope
- MJC8719
- · Replies 1 ·
How can I set up two 1500 W speakers in a ballroom without losing power?
- 21385
- · Replies 1 ·
How to Calculate Torques Using Tension and Force Components?
- t_n_p
- · Replies 6 ·
Vertical Motion under Gravity Q)
- Lavace
- · Replies 1 ·
Sliding Down a Spherical Surface
- Paul_Bunyan
- · Replies 4 ·
Can Old Handouts Effectively Prepare You for Physics Tests?
- blaziken's_charizard
- · Replies 11 ·
How Long is a Ball Thrown Upwards 3m Above Ground?
- Lavace
- · Replies 1 ·
Calculating Magnetic Field at Point P
- cuppy
- · Replies 1 ·
Solving Magnitude of Charge Problem with Coulomb's Law
- bidhati
- · Replies 4 ·
Calculating Launch Angle of Rock from Catapult on a Cliff
- BMWPower06
- · Replies 3 ·
Why does a bar magnet's north pole point toward Earth's north?
- cuppy
- · Replies 3 ·
How much heat energy is needed to operate a metromelt for one hour?
- AlanxD
- · Replies 8 ·
Do gravitational and electrostatic potential energies cancel when equal and opposite?
- benedwards2020
- · Replies 1 ·
Trajectory of projectile with friction in air
- chaoseverlasting
- · Replies 7 ·
Moment of inertia, when a velocity of ball triples?
- rcmango
- · Replies 3 ·
How can Bernoulli's equation be applied to pitot-static tubes?
- adamlep14
- · Replies 5 ·
Can forces on symmetric supports under a beam be determined uniquely?
- Signifier
- · Replies 11 ·
Where is the Least Net Force on a Roller Coaster Going Through a Vertical Loop?
- rcmango
- · Replies 2 ·
Understanding Car Motion: Potential and Kinetic Energy on an Uphill Slope
- rcmango
- · Replies 1 ·
Can Oxygen Pass Through Water in a Suspended Tank?
- Idea04
- · Replies 3 ·
Effective resistance between A and B
- ritwik06
- · Replies 13 ·
Deriving relative velocity formula from energy and momentum conservation
- Zeth
- · Replies 1 ·
What is the centripetal acceleration of the Earth in its orbit around the Sun?
- curiousgeorge99
- · Replies 6 ·
Electrostatic and Gravitational Forces
- grscott_2000
- · Replies 6 ·
Why do charged particles attract neutral ones if potential energy is zero?
- Fusilli_Jerry89
- · Replies 6 ·
Finding constants in first-order RC circuit differential equation
- RadiationX
- · Replies 4 ·
Finding weight and horizontal force with 48 kg mass and 70° angle
- raman911
- · Replies 5 ·
When can the gravitational potential energy be zero?
- BMWPower06
- · Replies 12 ·
How Can You Determine an Unknown Resistor's Value with Limited Tools?
- chenny
- · Replies 6 ·
Solving Angular Rotation Homework: Question b, c & d
- ataglance05
- · Replies 1 ·
Diver's initial velocity from 3 m board
- scw287
- · Replies 8 ·
Finding height when a ball takes 2.70 s to fall from rest
- BMWPower06
- · Replies 4 ·
Solve Polar Moment of Inertia for Thin Plate in 1st Quadrant
- king imran
- · Replies 7 ·
Elevator Weight and Acceleration
- BMWPower06
- · Replies 3 ·
Integration (displacement or position)
- kieran1black2
- · Replies 2 ·
Estimating Jet Speed Using Sound and Light
- DANIELLYMA
- · Replies 5 ·
Solving for Minimum Camera Speed to Reach Passenger
- BMWPower06
- · Replies 14 ·
Who's Right in Force Problem: Jeep vs Tractor
- Zeth
- · Replies 2 ·
Calculating Angular Acceleration of a Rotating Door
- MJC8719
- · Replies 3 ·
Bird Watcher's Displacement and Velocity
- scw287
- · Replies 28 ·
Calculating Projectile Velocity to Clear 11m Wall
- scw287
- · Replies 18 ·
Charge on 7 mF Capacitor Connected to 1 V Battery
- GravityGirl
- · Replies 2 ·
How do I calculate the elastic potential energy stored in a spring?
- lilmul123
- · Replies 3 ·
Electric Charge Problem - Book error?
- PFStudent
- · Replies 1 ·
Would melting icebergs raise or lower water levels?
- eyehategod
- · Replies 16 ·
Is torque required to change angular momentum?
- eyehategod
- · Replies 2 ·
How Do You Calculate the Focal Length of a Lens for a Projector?
- ad-one
- · Replies 1 ·
Three Unknown Resistances: Solving for Unknowns in a System of Equations
- flash
- · Replies 2 ·
Use the formula for Final velocity
- Morgan89
- · Replies 11 ·
Calculating Distance Traveled by Sam on Jet-Powered Skis
- powderchick81
- · Replies 3 ·
Kinematics in two Dimension- projectile motion
- minx1004
- · Replies 10 ·
Planetary Motion - Energy Totals and Binding Energy
- quarklet
- · Replies 5 ·
How do you double the maximum speed in simple harmonic motion?
- recklessid
- · Replies 1 ·
Spring constant and stiffness constant
- janice778
- · Replies 13 ·
Finding instantaneous velocity at given points on nonlinear graph
- exi
- · Replies 7 ·
Calculating the Frequency of a Car Horn Using the Doppler Effect
- Morgan89
- · Replies 5 ·
Maximal static friction problem
- Black Riven
- · Replies 4 ·
Hydrogen fuel cell presentation slide ideas
- Plasma
- · Replies 3 ·