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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Modern Physics: Length Contraction
- smithg86
- · Replies 11 ·
Calculating Net Force on a Tilted Object: A Vector Analysis
- elyse1987
- · Replies 1 ·
Moving blocks on an incline - relative motion
- JJBladester
- · Replies 1 ·
What is the conversion for 86.6 m to standard (base) SI units?
- kLPantera
- · Replies 13 ·
What is the relationship between force and potential energy in elastic systems?
- flazer
- · Replies 4 ·
Driver reaction time, with negative acceleration
- Spydermonkey
- · Replies 13 ·
Centripetal acceleration using a sling
- mrparker2
- · Replies 1 ·
Determine the acceleration due to gravity on this planet
- darbeecakes
- · Replies 12 ·
How to show group velocity = particle velocity?
- doanta
- · Replies 7 ·
Athelete jump dimensional motion
- madah12
- · Replies 5 ·
Maximum Amplitude for Simple Harmonic Motion with Friction
- Je m'appelle
- · Replies 4 ·
How Is the Electric Field Around an Infinitely Long Wire Derived?
- Uku
- · Replies 1 ·
Magnitude of average velocity and average speed
- J.live
- · Replies 3 ·
What Was the Average Acceleration During a Car Collision?
- atbruick
- · Replies 2 ·
Train Physics, One dimensional Motion
- johndom33
- · Replies 2 ·
Calculating Velocity and Time with Wind: A Homework Problem
- iam911
- · Replies 4 ·
How Do Kirchhoff's Laws Apply to a Capacitor in a Circuit?
- Saraphim
- · Replies 5 ·
Coulomb's Law Problem: Net Electrostatic Force on Particle 3 at 5.5 cm Distance
- noname1
- · Replies 1 ·
Parallel plate capacitor book problem
- dwan3
- · Replies 1 ·
Products of rations to convert meters per second to miles per hour
- new^2^physics
- · Replies 1 ·
Find Displacement of Car: Math Homework
- delfam
- · Replies 3 ·
Identifying all forces on this stick
- Raziel2701
- · Replies 1 ·
Special relativity: rectangular box moving 0.5c
- scustin
- · Replies 3 ·
OUNT OF HEAT ABSORBED AND WORK DONE IN A PV DIAGRAM?
- paradiselost5
- · Replies 2 ·
Nodal analysis, setting up the equations
- gomezfx
- · Replies 3 ·
Calculating Tension in Cord in 2-Pulley System
- maximoanimo
- · Replies 4 ·
Which one of the quantities below has dimensions equal to ML/T^2?
- new^2^physics
- · Replies 1 ·
Finding time to take a trip to Proxima Centauri
- Raziel2701
- · Replies 2 ·
How Do I Correctly Calculate the Torque in This Physics Problem?
- Markel
- · Replies 4 ·
Circular Motion at an angle, finding angles and tension
- etern1ty
- · Replies 1 ·
What is the speed of the ball just before it strikes the ground?
- gap0063
- · Replies 2 ·
Initial velocity of a ram headbutting a castle
- kjwx
- · Replies 1 ·
Rocket Problem: Solving for Velocity, Time, and Altitude
- Libohove90
- · Replies 1 ·
Electric field - point of zero field
- Uku
- · Replies 3 ·
Need Help Understanding 3 Problems?
- mohabitar
- · Replies 9 ·
Mesh Current Analysis for a Series-Parallel Circuit
- gomezfx
- · Replies 1 ·
Potential of Concentric Cylindrical Insulator and Conducting Shell
- scef333
- · Replies 5 ·
Acceleration Problem: Solving for Distance, Velocity & Time
- sproles134
- · Replies 1 ·
The position of the object is on the place of the question mark.
- Boxter
- · Replies 4 ·
System of pulleys - General Understanding
- ana111790
- · Replies 1 ·
Potential Difference from Electric field
- hrs90
- · Replies 5 ·
Why Do We Use Sine for the X-Component in Physics Problems?
- Hemingway
- · Replies 3 ·
How Do You Calculate the Explosion Coordinates of an Artillery Shell?
- msudawgs2225
- · Replies 6 ·
Calculating coulombs law in a capacitor?
- HMS-776
- · Replies 1 ·
Find the magnitude of the initial velocity.
- jessicax07
- · Replies 1 ·
Finding Distance Traveled of Car with Constant Acceleration/Deceleration
- jessicax07
- · Replies 2 ·
Help with a vector proof about perpedndicular unit vectors
- vande060
- · Replies 4 ·
Magnitude of electric field, is this right?
- staceface
- · Replies 1 ·
HOw much power is drawn from a one volt battery?
- jersey
- · Replies 15 ·
Calculating Displacement Using Vectors and Angles
- jubbly
- · Replies 1 ·
Finding Maximum Height and Initial Velocity of a Thrown Ball
- Bkrdc04
- · Replies 1 ·
Constant acceleration problem with two objects
- Portishead
- · Replies 7 ·
What is the direction of the resultant displacement from the starting point?
- delfam
- · Replies 6 ·
Solving Air Resistance in Projectile Motion
- uchicago2012
- · Replies 6 ·
Trajectory question(find spped of impact)
- vande060
- · Replies 2 ·
Projectile Motion Graphs and Velocity Vector Calculation Homework
- bakamanju
- · Replies 4 ·
Finding the resultant displacement vector.
- venomnert
- · Replies 1 ·
What is the radius of curvature of the track at 6 seconds into the curve?
- Starwanderer1
- · Replies 1 ·
Solving for F3 Magnitude and Theta Given F1 and F2
- quantum_enhan
- · Replies 4 ·
V dot (dv/dt) = (0.5)*(d/dt)*(v^2) ?
- wavingerwin
- · Replies 2 ·
The Atom: wavelength, energy, kinetic energy, etc. of photons
- 278225mw
- · Replies 1 ·
Simple motorboat kinematics problem
- maxbashi
- · Replies 2 ·
Physics-magnitude/ displacement?
- J.live
- · Replies 3 ·
Solving Excess Charge Problem at Point 1
- jincy34
- · Replies 2 ·
Why Is My Calculated Speed of Sound Incorrect?
- Astonix
- · Replies 1 ·
How to Calculate Position at 8 Seconds Using Kinematic Equations?
- rodjav305
- · Replies 4 ·
How far from the end of the pier are you?
- dch1runs
- · Replies 3 ·
Physics- velocity/ distance problem?
- J.live
- · Replies 5 ·
Velocity of colliding electron and surface
- sheepcountme
- · Replies 4 ·
Variable acceleration with one premise
- pf_001
- · Replies 2 ·
Position of Particle with Max Speed on x-Axis | Physics
- J.live
- · Replies 1 ·
What is the angular speed of a ball sliding on a rotating ring at a given angle?
- valandil
- · Replies 2 ·
How to Measure and Create Capacitors with Basic Materials?
- tsang
- · Replies 2 ·
How to Prove Electric Potential Formula for a Charged Disc?
- sheepcountme
- · Replies 1 ·
Magnitude and direction of the electric dipole
- tsang
- · Replies 3 ·
Uncertanties and errors question
- Xelb
- · Replies 3 ·
End position of braking car on an icy incline
- imatreyu
- · Replies 13 ·
AP Physics Problem: Find Height on Icy Hill w/ 40km/h & 0.153 FK
- hk<3
- · Replies 2 ·
Minimum Coefficient of Friction
- mohabitar
- · Replies 1 ·
Work done - problem set without ans. given
- Hemingway
- · Replies 2 ·
Determine the Orbital Radius of a planet
- damaged goods
- · Replies 4 ·
Roller coaster velocity at the bottom of an incline
- imatreyu
- · Replies 2 ·
Calculating deceleration .need quick help, please
- niisama
- · Replies 1 ·
Projectile Motion- 2D Kinematics
- vellum
- · Replies 1 ·
Find Friction Force for 3 kg Block on Inclined Plane
- jinx007
- · Replies 1 ·
Solve Tension of Three Strings: Mass 15.0 kg
- seuzy13
- · Replies 3 ·
Finding Spring Constant Question
- mohabitar
- · Replies 4 ·
When Will the Asteroid Reach the Sun?
- SimpliciusH
- · Replies 11 ·
Understanding Special Relativity: The Relationship Between Force and Velocity
- StephenD420
- · Replies 4 ·
Solving Photoelectric Effect: Kinetic Energy, Work Function & Wavelength
- fluidistic
- · Replies 21 ·
Calculating currents homework question
- jersey
- · Replies 19 ·
Calculating the magnitude of point charges
- ezperkins
- · Replies 3 ·
Really Simple Acceleration Question
- mohabitar
- · Replies 11 ·
Calculate the distance the car coasts before it stops
- donrichmond
- · Replies 4 ·
I don't understand this simplification question for Power
- chroncile
- · Replies 1 ·
Help Needed: Calculating Air Pressure with Roe and K
- BenjoNi
- · Replies 1 ·
SUVAT: Solving for t When s=(u+v)t/2
- Dan1601
- · Replies 1 ·
When will the pilot hit the ground while flying over sloping terrain?
- crybllrd
- · Replies 4 ·
Finding the x and y components of this vector
- kevnm67
- · Replies 6 ·
Kinematics moving particle problem
- crybllrd
- · Replies 2 ·