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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Why Is y - y0 Positive in Vertical Motion Problems?
- DrunkApple
- · Replies 7 ·
Maximum Kinetic Energy of a Particle with Force F = F0e^(–kx)?
- kiowaviator
- · Replies 4 ·
Why is the acceleration positive?
- DrunkApple
- · Replies 1 ·
Understanding Protoboard Circuits: How Do Ground Connections Work?
- bmxicle
- · Replies 17 ·
What is the temperature inside the freezer?
- AllenHe
- · Replies 4 ·
Is Work Required to Push Electrons from Positive to Negative Terminal?
- Peter G.
- · Replies 2 ·
Finding Potential and Charge across a Capacitor in a Multi-Loop Circuit
- Adm_Thrawn
- · Replies 5 ·
Force and motion problem with two tensions and 3 masses and an ideal pulley
- runphysicsrun
- · Replies 3 ·
Add or Subtract? Solve Voltage Math Problem
- atwong713
- · Replies 12 ·
Fluid Mechanics; Lift Force on a Roof; Bernoulli's Equation
- AdkinsJr
- · Replies 2 ·
Mass of Block 1 & Static Friction Info for Block-Table System
- cd.riter
- · Replies 9 ·
Calculating Work Done by a Gas Using the PV=1000 Equation | Thermo Help
- bradycat
- · Replies 1 ·
Finding the angle between two vectors
- hyde2042
- · Replies 4 ·
Tension. Application of Newton's Laws.
- valeriex0x
- · Replies 5 ·
How to Derive the Decay Equation for Radioactive Isotopes A -> B -> C?
- unscientific
- · Replies 1 ·
Rocket fires its engine, force/acceleration
- amd123
- · Replies 3 ·
Finding the Magnitude of a Vertical Force in a Simple 3D Statics Problem
- Ortix
- · Replies 2 ·
What is the Mass of the Planet in Scientific Notation?
- free_spirit
- · Replies 5 ·
Friction problem of a 6kg block
- BallerRegis
- · Replies 1 ·
Why SPECT produces images with higher contrast
- nousername
- · Replies 10 ·
Simple Uniform Acceleration Question
- wwwwww
- · Replies 7 ·
Planck Time Problem: Calculation & Explanation
- Sagari
- · Replies 2 ·
Gravitation and planetes: exercise
- RHK
- · Replies 16 ·
Finding speed of the car, kinematics
- jehan4141
- · Replies 3 ·
Finding the change in K.E. G.P.E ignored?
- Icetray
- · Replies 3 ·
Magnitude and direction of Wind Force
- tryton
- · Replies 3 ·
How Does an Airplane's Climb Angle Affect Package Trajectory on Release?
- jehan4141
- · Replies 1 ·
Objects Flying towards each other (2d kinematics)
- chimpfunkz
- · Replies 15 ·
Direction of acceleration in pendulum bob?
- SUROJL
- · Replies 1 ·
Double pulley problem-difference in acceleration
- Arait
- · Replies 11 ·
Finding magnitude of a third displacement
- JennAshley19
- · Replies 4 ·
How to Determine Capacitance with Variable Dielectric Dimensions?
- MetalManuel
- · Replies 4 ·
How to find energy stored between two spheres?
- curt291
- · Replies 2 ·
Potential across a Resistor for an Ideal Battery
- Adm_Thrawn
- · Replies 4 ·
Is Static Friction Necessary on an Incline When Motion Stops?
- mak66
- · Replies 4 ·
How to find mass of block from static friction
- mak66
- · Replies 2 ·
Motion in a Plane, Vector Addition/Subtraction
- TheModernAge
- · Replies 1 ·
Finding Maximum Current Entering A Terminal
- madhatter500
- · Replies 3 ·
Mechanics: Moments of force in a rigid beam
- JohanM
- · Replies 1 ·
Skateboard Ramp Kinematics Practice Problem
- jehan4141
- · Replies 2 ·
Does the Entropy Change in a Carnot Cycle Sum to Zero?
- mindarson
- · Replies 1 ·
Calculate Horizontal Velocity of Jetliner at 233 m/s
- tryton
- · Replies 3 ·
Hiker's Total Displacement: 74km
- JennAshley19
- · Replies 3 ·
Magnetic Circuits, Air Gaps (conceptual)
- sandy.bridge
- · Replies 1 ·
Projectile motion of a snowmobile
- getty102
- · Replies 3 ·
How to find acceleration and tension given mass and an angle
- angiep410
- · Replies 14 ·
How do you find the mass given force and an angle?
- angiep410
- · Replies 3 ·
Can a Mistake in KVL Analysis Disprove a Fundamental Law?
- sandy.bridge
- · Replies 4 ·
How do you find how far an object will go?
- angiep410
- · Replies 5 ·
Mechanics problem involving a Differential Equation
- darrenhb
- · Replies 3 ·
Calculate the energy of the laser photons
- CathyLou
- · Replies 13 ·
Finding the stopping distance of a car? Help please.
- nukeman
- · Replies 12 ·
How does the ocean affect daily temperatures?
- J-Girl
- · Replies 9 ·
What is the coefficient of kinetic friction for the incline?
- DrunkApple
- · Replies 7 ·
Understanding Static Friction in a Cart and Wall System
- torquemada
- · Replies 2 ·
Maximum power theory in electronics
- logearav
- · Replies 4 ·
What Horizontal Force Tips a Crate with Given Friction and Mass?
- ama
- · Replies 1 ·
Fluid Friction Question: Calculating Projectile Velocities with Air Resistance
- Dragon M.
- · Replies 1 ·
Thermaldynamics problem, reversible process work done on
- Liquidxlax
- · Replies 8 ·
How Do Special Relativity and Mechanics Explain These Physics Puzzles?
- wuffle
- · Replies 6 ·
Differential equation using complex exponentials
- Slimsta
- · Replies 2 ·
Calculating Tension (with rope mass)
- Rayquesto
- · Replies 7 ·
Mass on 2 ropes, looking for tension
- csinger1
- · Replies 6 ·
Elementary Charge lab question?
- Naru1019
- · Replies 1 ·
Work required to move a charge through an electric field (3D)
- GAtechie291
- · Replies 1 ·
How Do You Calculate the Acceleration and Direction of a Flea in a Breeze?
- jfeyen
- · Replies 3 ·
Calculating Impulse Force for a Pitched Ball: How to Find the Final Velocity?
- lab-rat
- · Replies 16 ·
Real Variables In Complex Equation
- Dr_Seuss
- · Replies 2 ·
2-d kinematic w/non-constant acceleration
- rjs123
- · Replies 2 ·
Finding the Direction and Distance of a Train's Motion Using Basic Kinematics
- miglo
- · Replies 9 ·
Gravitational field strength formula
- g33n13
- · Replies 2 ·
Physics 161 Forces Homework: Calc Net Force of 340 kg Rocket Sled
- Kawasaki268F
- · Replies 5 ·
Michelson-Morley Experiment Question (No math)
- mindarson
- · Replies 1 ·
Need Help: Drag force on a skater question ?
- nukeman
- · Replies 22 ·
Please help I need to prove a physics teacher wrong
- eromero7
- · Replies 2 ·
How Can Photons Have Momentum Without Mass?
- logearav
- · Replies 3 ·
Physical meaning of a result in Bragg's diffraction
- fluidistic
- · Replies 6 ·
Negative Work function in Photo electric effect
- logearav
- · Replies 4 ·
Kinematics Ball throwing problem. Help
- mattyc33
- · Replies 4 ·
Steam and ice interact, find final temperature
- mindarson
- · Replies 1 ·
Basic ball projectile motion problem
- miglo
- · Replies 6 ·
Describe the path of the object in an xy plot.
- naaa00
- · Replies 5 ·
How to Find Radial and Tangential Acceleration in Non-Uniform Circular Motion?
- aali069
- · Replies 3 ·
Relationship between Kinetic Energy and Gravitational Potential Energy.
- Craptola
- · Replies 1 ·
Help Solve Physics Problem Now: String Unwound from Wheel
- joecocobo
- · Replies 3 ·
HRK Energy/Rotational Motion Question
- conquerer7
- · Replies 3 ·
Fluids(Bernoulli and Continuity)
- knowNothing23
- · Replies 2 ·
Blocks colliding momentum problem
- brushman
- · Replies 7 ·
Finding the time elapsed, distance and speed
- InvaznGSC
- · Replies 3 ·
Solving Binary Star Systems: Doppler & Kepler's 3rd Law
- SpY]
- · Replies 6 ·
Use components to find Direction of the resultant of the three pulls?
- valeriex0x
- · Replies 10 ·
Bead on wire with constant velocity
- treynolds147
- · Replies 1 ·
Two boxes tied together on an inclined plane. Find common acc and tension
- Twinflower
- · Replies 18 ·
Multiplicity of Macrostates, involving dice
- Quiggy
- · Replies 6 ·
Specific Heat (kCal and J) for copper, help please
- strayaway
- · Replies 1 ·
Mass Sliding at An Angle; find mass of one
- cassienoelle
- · Replies 39 ·
Finding acceleration of flea using force analysis
- mkwiatko
- · Replies 3 ·
Projectile Motion Problems Involving angles
- jtredz518
- · Replies 4 ·
Energy required to heat different materials?
- J-Girl
- · Replies 1 ·
How Can Graphs Help Analyze Muzzle and Impact Velocity Data?
- Azndoode1
- · Replies 3 ·