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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Critically Damped Harmonic System
- sTrEsSeD
- · Replies 3 ·
Centripetal Acceleration of bicyclist
- sylenteck0
- · Replies 5 ·
How Does Human Reaction Time Affect Car Stopping Distances?
- JDR 007
- · Replies 1 ·
Answer: Work Needed to Compress Spring 4 cm
- kring_c14
- · Replies 2 ·
How Does the Slope Change with Ramp Angle in Galileo's Experiment?
- ksaechao
- · Replies 1 ·
Turning points of a classical harmonic oscillator
- ehrenfest
- · Replies 1 ·
Finding deceleration distance when Craig slows from 133.5 to 100 km/h
- ksaechao
- · Replies 1 ·
Find Angle to Pull Toaster Cord for Min. Tension
- pf21avs
- · Replies 2 ·
Rifleman's Rule: Best angle for a projectile up a hill [ ]
- FissionMan1
- · Replies 2 ·
Hunter diring at a monkey hanging from a vine.
- mimibajiduh
- · Replies 2 ·
Impulse/momentum concept questions
- dnt
- · Replies 6 ·
Position from velocity-time graph at 6 seconds
- missashley
- · Replies 1 ·
What is the unknown mass in a pulley block problem with given variables?
- sylenteck0
- · Replies 6 ·
2 Blocks, 1 Cord [Acceleration, Tension]
- Heat
- · Replies 17 ·
Can a Completely Inelastic Collision Be Elastic?
- ehrenfest
- · Replies 5 ·
Acceleration,Time,Velocity with Friction Problem?
- davidco
- · Replies 11 ·
Potential Energy and Kinetic Energy Problem
- jayced
- · Replies 13 ·
How Does Friction Impact Acceleration and Constant Speed in Motion?
- doubledouble
- · Replies 1 ·
Time problem involving Mass and a Pulley?
- cal04
- · Replies 1 ·
How does force split between blocks on a pulley system when one accelerates?
- Laban
- · Replies 10 ·
What is the value of C2 in a balancing capacitor system?
- mitleid
- · Replies 8 ·
Sports car Acceleration problem
- JDR 007
- · Replies 9 ·
Weight of vehicles when stopping
- Probie
- · Replies 1 ·
Calculate the physical properties of a Bohr atom
- Benzoate
- · Replies 11 ·
Finding distance based off acceleration
- JDR 007
- · Replies 12 ·
How Do You Convert X-Ray Formula Parameters for Different Grid Ratios?
- LGx-ray
- · Replies 7 ·
Physics Student in Elevator: Find Acceleration & Tension
- Heat
- · Replies 29 ·
Calculating Energy Usage for a 100-Watt Light Bulb and Human Running Speed
- physicsgirlie26
- · Replies 8 ·
Calculating Velocity from Acceleration: Solving for Time
- bdb1324
- · Replies 2 ·
Breakdown voltage of capacitance network
- mitleid
- · Replies 5 ·
Calculating Hydrogen Bohr Orbit Transition and Series using Wavelength 410.7 nm
- Benzoate
- · Replies 1 ·
Tension and Weight Comparison in Hanging Object System
- Heat
- · Replies 2 ·
Calculating Distance Between Stop Signs Using Accelerated Motion Formulas
- TonkaQD4
- · Replies 3 ·
Calculate the rms speed of free electrons
- Chele
- · Replies 3 ·
What is the magnitude of the upward acceleration of the load of bricks?
- Heat
- · Replies 11 ·
Electric dipole in an electric field problem
- jhess12
- · Replies 13 ·
Finding charge on capacitors in series-parallel circuit
- mitleid
- · Replies 10 ·
When Does a Bob Attached to a String Become Slack?
- atavistic
- · Replies 2 ·
How Do You Calculate the Force Exerted by the Pole on a Tetherball?
- bigtymer8700
- · Replies 1 ·
F=ma prob with electrons (They don't even act like particles )
- Pee-Buddy
- · Replies 4 ·
How Long to Melt an Ice Cube in a Microwave with 104 Watts?
- Cassie
- · Replies 2 ·
How Do You Calculate Mass M1 in a Frictional Inclined Plane Pulley System?
- bulldog23
- · Replies 39 ·
Why Must the Second-Order Taylor Polynomial for E(v) at v=0 Equal mc^2 + ½mv^2?
- Niles
- · Replies 11 ·
Motion in the Presence of Velocity-Dependent Resistive Forces
- twotaileddemon
- · Replies 2 ·
How Fast Was the Bullet Going if the Block Rises 75cm Above the Table?
- turnip
- · Replies 5 ·
Why Are My Capacitance Calculations Incorrect?
- jhess12
- · Replies 4 ·
Where Can I Find Earth's Magnetic Field Values for Major Cities?
- noospace
- · Replies 1 ·
Apple dropped from tower, bullet fired horizontally to hit it
- pebbles
- · Replies 9 ·
Help Solve Amusement Park Wall of Death Problem
- bulldog23
- · Replies 2 ·
Conical problem finding tensions and periods
- starfire59
- · Replies 1 ·
Projectile Motion: Frisbee Sliding up a Sloped Roof
- Th3Proj3ct
- · Replies 1 ·
Speed and Velocity of a mosquito
- temaire
- · Replies 1 ·
Draw FBD for Inuit Hunter in Blanket Toss of 700N
- temaire
- · Replies 1 ·
QB throws ball at 45° with 22 m/s; how fast must receiver run?
- pebbles
- · Replies 3 ·
Airplane Flying: Finding Direction & Ground Speed
- pebbles
- · Replies 3 ·
Maximum weight of hanging block on frictionless table with angled rope
- Xiongster
- · Replies 8 ·
Airplane diving at 52° releases projectile from 550 m
- Blink691
- · Replies 9 ·
Conduction vs. Induction: What's the Difference?
- English10
- · Replies 2 ·
Newton's 3rd law and two forces
- Vivee=)
- · Replies 10 ·
How Does a Current-Carrying Wire Affect a Nearby Compass?
- thename1000
- · Replies 2 ·
Blinking light circuit voltage vs. time?
- mikebc
- · Replies 4 ·
Energy Question-(don't know which equation to use?)
- quickclick330
- · Replies 11 ·
How Do You Calculate DeltaX in Projectile Motion?
- DanielP
- · Replies 1 ·
What property of light does the photoelectric effect display?
- Andresx90
- · Replies 8 ·
How far does a bullet fall before hitting a target 180 m away?
- willingtolearn
- · Replies 7 ·
Child losing contact on circular playground slide arc
- lgmavs41
- · Replies 1 ·
Blackbody radiation frequency problem
- Benzoate
- · Replies 5 ·
Finding the energy and momenta of massless particles
- Benzoate
- · Replies 8 ·
Calculate Kinetic Energy of 50.5g Golf Ball at 26.5m Height
- eanderson
- · Replies 3 ·
Momentum (Catching Ball on Ice)
- kevina
- · Replies 3 ·
Calculate the average speed from a bar graph
- Jath
- · Replies 2 ·
How Do You Calculate Position from a Velocity Graph?
- kraaaaamos
- · Replies 1 ·
Calculating Electron Drift Time in Copper Wire: Density Question
- thename1000
- · Replies 1 ·
Finding minimum angle of friction.
- pooface
- · Replies 1 ·
Sailing with a Trolley and a Bag of Sugar
- kateman
- · Replies 2 ·
Calculate the magnitude of the gravitational force
- mathcrzy
- · Replies 1 ·
Two problems involving angular velocity:
- Bob Loblaw
- · Replies 2 ·
What is the significance of E in scientific notation?
- perfect_piccolo
- · Replies 12 ·
Vertical Projectile: Solved, Energy, Max Height
- cscott
- · Replies 5 ·
Solving for work Power equations
- eanderson
- · Replies 2 ·
How Much Work Is Required to Double the Separation of Charged Parallel Plates?
- indigojoker
- · Replies 13 ·
Solving Physics Time Problem: Apollo Lunar Landing Mission
- mathcrzy
- · Replies 1 ·
Sprinter Speed at Finish Line in 100 Meter Dash
- TonkaQD4
- · Replies 3 ·
Find Physical Dimension of Constant C2
- AmrAmin
- · Replies 3 ·
Calculate the force of gravity on a spacecraft
- mathcrzy
- · Replies 3 ·
Constervation of Mechanical Energy Problem
- lgmavs41
- · Replies 6 ·
Calculating Normal Force, Acceleration, and Work in a Force and Work Problem
- logglypop
- · Replies 3 ·
Tension in rope pulling 1000kg mass upward at 1m/s²
- Big-J
- · Replies 6 ·
Find Acceleration of Block: 1250 N, 950 N@70NofW, 1050N@50NofE
- FilthyOtis
- · Replies 2 ·
Tension, pulley and acceleration problem
- sphykik
- · Replies 2 ·
Two lines of charge, net electric field
- jendead
- · Replies 7 ·
Golf ball kinetic energy at highest point and at 8.47 m below
- eanderson
- · Replies 10 ·
Universal law of gravity question
- Rgonzales
- · Replies 2 ·
Finding the Time to Reach Maximum Height with Air Resistance
- captain
- · Replies 8 ·
Tangential speed of a passenger on a Ferris wheel
- jlaugh87
- · Replies 2 ·
Dielectric constant and plate area from electric field measurements
- at3rg0
- · Replies 5 ·
At which angle should a thrown ball always fly away from you?
- azatkgz
- · Replies 6 ·
Ratio of Ta to Tb: A Simple Division
- Karma
- · Replies 1 ·
How Much Power is Needed to Pull a Block Up an Incline?
- chaotixmonjuish
- · Replies 12 ·
Net work by applied force and friction on 109-kg crate
- eanderson
- · Replies 2 ·