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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Push a Block against a Wall- Static Friction
- Phoenixtears
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How to Solve a Tough Concept Question: Rifle Aiming Experiment
- zn23
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Speed of ship as fraction of speed of light
- Dannya
- · Replies 2 ·
Bullet embedding in wood with constant deceleration
- RubrickZero
- · Replies 3 ·
Stopping Distance of a Locomotive with Failed Engine and Brakes
- Phoenixtears
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What is the solution to the garden cart torque problem?
- akan
- · Replies 4 ·
Finding the Magnitude of a Horizontal Force on a Frictionless Inclined Plane
- veronicak5678
- · Replies 12 ·
What is the resultant displacement of John on the interstate highway?
- bigzee20
- · Replies 4 ·
Position, velocity, and acceleration vectors
- riafran
- · Replies 1 ·
How Long Before Overhead Should Supplies Be Dropped from a Plane?
- Natali
- · Replies 1 ·
Soap Bubble interference-verify answer
- bcjochim07
- · Replies 3 ·
How to Calculate the Velocity of a Projected Object at Impact?
- ashi1416
- · Replies 10 ·
How Do You Calculate Specific Heat and Identify Unknown Substances?
- lynn0808
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Bureau on rough surface: why kinetic friction, not static?
- musicfairy
- · Replies 2 ·
Calculating Sound Level from One Firecracker
- physics1987
- · Replies 6 ·
Bullet fired into wooden pendulum: finding initial speed
- Akuu
- · Replies 3 ·
Help interpreting speed diagram for kinematics problem
- swede5670
- · Replies 5 ·
Solving Physics Force Problems: Finding Resultant Force Components and Magnitude
- darealprince
- · Replies 3 ·
Pushing wooden creat - Friction
- kmikias
- · Replies 1 ·
Are My Physics Test Answers Correct?
- mastiffcacher
- · Replies 1 ·
Time for object to fall on Moon vs Earth with one-sixth gravity
- Johnny_07
- · Replies 7 ·
Frequency of a Standing Wave on a String
- bcjochim07
- · Replies 4 ·
Work and potential in an electric field
- sebby
- · Replies 2 ·
Finding net force on charges on xy plane
- gnarkil
- · Replies 6 ·
Finding distance traveled by eraser with only initial velocity
- microdoodle
- · Replies 8 ·
What Forces Are Not Exerted on a Bathroom Scale?
- Mike Hunt
- · Replies 1 ·
Electric Potential Energy of electron orbits
- nckaytee
- · Replies 8 ·
What is the minimum speed needed for a trout to jump a 2.5 m waterfall?
- whyorwhynot
- · Replies 4 ·
Optics: What is the speed of the sprinter's image?
- bcjochim07
- · Replies 1 ·
Applying Newtons laws ( Equilibrium)
- sktgurl930
- · Replies 5 ·
Average Velocity Graph: Determine its Values
- Toxage
- · Replies 1 ·
Force on pulley when rope pulls cart horizontally
- Jstew
- · Replies 7 ·
Kinematics in two dimensions of golf ball
- goodcoverage
- · Replies 6 ·
Calculating Relative Velocity of Grenade in Moving Vehicles
- anubis01
- · Replies 2 ·
Find acceleration of the mass immidiately after rope is cut
- veronicak5678
- · Replies 10 ·
Projectile Fired Against A Slope
- veronicak5678
- · Replies 12 ·
Problem solving with forces and friction.
- Thoven
- · Replies 3 ·
How to Solve Vector Problems in Rotated Coordinate Systems
- iconwin
- · Replies 5 ·
What is the maximum gravitational force between two uniform spheres?
- gmunoz18
- · Replies 3 ·
Ball tossed from window at angle below horizontal
- riafran
- · Replies 1 ·
Max radius of falling liquid drop
- bengaltiger14
- · Replies 1 ·
A Pickup Truck and a bit of Friction
- Bachi234
- · Replies 3 ·
Maximum angular frequency for two blocks on a spinning turntable
- v3lox
- · Replies 4 ·
Stupid Stubborn Mule and his Kinetic/Static Friction
- Phoenixtears
- · Replies 6 ·
Setting up impulse and momentum conservation problems
- crimsonfears
- · Replies 2 ·
Calculating Vo for a Basketball Shot at 40 Deg Angle
- warjunkie
- · Replies 1 ·
Circular motion of identical spheres in space
- sberreb
- · Replies 1 ·
How Do You Calculate Maximum Velocity and Height for a Rocket Launch?
- Jimmy Rose
- · Replies 11 ·
Finding speed when fish jumps out of water
- sydneyown
- · Replies 1 ·
Height at which objects will collide
- 05holtel
- · Replies 4 ·
I have no clue what the normal force is :-(
- HelloMotto
- · Replies 1 ·
What Factors Influence Acceleration in Non-Uniform Circular Motion?
- MasterTinker
- · Replies 1 ·
Tension between 2 blocks and friction.
- CaptainSFS
- · Replies 3 ·
How to Calculate Average Power and Roller Coaster Speed on the Moon?
- aforce20
- · Replies 9 ·
Physics mechanics kinematics question?
- fatherlewis
- · Replies 9 ·
What is the change in entropy of raspberry jelly during heating?
- Sheneron
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Energy transferred by paddle wheel in refrigerant thermodynamics problem
- Saladsamurai
- · Replies 1 ·
Photon Momentum Calculation for 25 x 105 erg Energy
- melissajohn
- · Replies 5 ·
AP Physics - Freely Falling Objects
- Blodwynne
- · Replies 1 ·
Swimmer runs off diving board horizontally at 3.63 m/s
- FlippyBP
- · Replies 7 ·
Fluid Dynamics, Buoyancy problem
- latitude
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How Far Must You Walk to Experience Silence Between Two Phase-Aligned Speakers?
- Foxhound101
- · Replies 6 ·
Forces and Newton's Laws of tension
- lmbiango
- · Replies 5 ·
Projectile, Range, Maximum Height, Time of Flight Problem
- Gimp Mask
- · Replies 1 ·
What Formula Calculates Stopping Distance with Negative Acceleration?
- missie
- · Replies 18 ·
Initial Mass of Oxygen + Mass of Oxygen leaked out
- ryaneye
- · Replies 3 ·
What is the tension in the string for two blocks on a spinning turntable?
- rgalvan2
- · Replies 4 ·
What Wavelengths Create Standing Waves on a 2.0 Meter Stretched String?
- viciousp
- · Replies 2 ·
Plane flying against 300 km/h wind: finding travel time between stations
- Tami24
- · Replies 2 ·
Deriving Equation: g = aave(M + m / m)
- vrobins1
- · Replies 2 ·
Force exerted by 3 moles of ideal gas on box sides at 24.0°C and 108°C
- ryaneye
- · Replies 1 ·
How Long Does It Take a Skier to Descend a 320m Hill at 2.30 m/s²?
- soapyshrimp
- · Replies 3 ·
Minimum time for a hunter to cross a 1.5 km wide river with a powerboat
- joe215
- · Replies 2 ·
How Do You Calculate the Net Electric Force on a Particle?
- jelliDollFace
- · Replies 10 ·
Supposedly Simple, 1-D Motion Question
- Luca169
- · Replies 4 ·
Projectile Question: How Much Vertical Distance Does Ball Clear Crossbar?
- menesh2002
- · Replies 1 ·
Very basic motion law - Newton's 2nd
- 2clients
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What sums to zero in a cyclic thermodynamic process?
- Saladsamurai
- · Replies 6 ·
Location of zero net electric force
- gnarkil
- · Replies 4 ·
Electrical circuits conceptual question
- jaejoon89
- · Replies 3 ·
Electric Circuits, Kirchhoff's Rules
- yayirunin2car
- · Replies 3 ·
Energy lost due to dissipation by air drag
- rosstheboss23
- · Replies 5 ·
Calculating Final Velocities in a 2-Dimensional Elastic Collision
- lpcampbe
- · Replies 2 ·
What are some challenging dynamics practice problems for next week's assignment?
- CDink
- · Replies 23 ·
Find speed of two objects after collision
- JJones_86
- · Replies 12 ·
Projectile fired up a slope at angle alpha
- Kudo Shinichi
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How much water has been lost from a person exercising?
- kyaat
- · Replies 2 ·
Finding R in terms of h for a ball dropped at v with 2D motion?
- -EquinoX-
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Including uncertainties in kenematic equations
- omarsalem91
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How Does Acceleration as a Function of Position Affect Speed and Travel Time?
- fdsadsfa
- · Replies 5 ·
Airplane drops a package (relative motion)
- southernbelle
- · Replies 11 ·
Solving dv/dt = Bv - Av² for initial acceleration and terminal velocity
- eyvhgi557r
- · Replies 1 ·
Kinematics - acceleration in a straight line
- Mitchtwitchita
- · Replies 1 ·
Riding a motorcycle on inclined plane
- azure kitsune
- · Replies 1 ·
Vectors and Beyond (two problems)
- pippintook
- · Replies 1 ·
What Is the Frictional Force Acting on a 16 kg Mass on an Incline?
- kmikias
- · Replies 1 ·
Projectile on an Incline question
- funzone36
- · Replies 1 ·
Interference in light rays due to phase difference
- sabinscabin
- · Replies 5 ·
Calculating Geosynchronous Orbit for a Satellite Around Jupiter's Moon
- gonzalo12345
- · Replies 1 ·