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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Rubber band powered rolling device from a coffee can
- SMB20
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Solve Electric Power Question: Calculate Voltage at Lamp 3 - Correct Answer 9.4V
- catalyst55
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Why is the velocity-time graph for vertical projectile motion linear and not parabolic?
- polyperson
- · Replies 7 ·
How many revolutions per minute is the sample making
- Serena_Greene
- · Replies 2 ·
How do I solve these physics problems?
- Serena_Greene
- · Replies 2 ·
AC Voltage: Is 110V Always Supplied?
- phyphysics
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Mechanics problem: cylinder on cart
- positron
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Momentum and the pressure of an ideal gas. Easy Question.
- jmcgraw
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Why do momentum and energy conservation seem contradictory in collisions?
- Werg22
- · Replies 4 ·
Linear momentum of jumping straight down
- leezak
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How Far Can Blocks Extend Beyond a Table Without Toppling?
- positron
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How would I calculate the magnitude of the electric field?
- hotmail590
- · Replies 5 ·
Why does a meter stick at 0.60c have a range of possible lengths?
- positron
- · Replies 1 ·
How Do You Determine Image Location and Type Using a Spherical Mirror Equation?
- positron
- · Replies 3 ·
Greater change in momentum between two objects
- positron
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Rocket balloon in a parrallel line
- yeyspaz
- · Replies 12 ·
Finding current across resistors
- notmetalenough
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Why Does a Soap Film of Thickness Lambda/4 Maximize Brightness?
- positron
- · Replies 1 ·
How long to melt plastic through composite material?
- David McKnight
- · Replies 2 ·
3 problems involving work and energy
- jrd007
- · Replies 24 ·
Calculating Initial Velocity for a Pendulum to Reach the Top Without Oscillation
- amcavoy
- · Replies 3 ·
How Much Lead Can a Tin Cup Carry Without Sinking?
- r3dxP
- · Replies 3 ·
Why does shower curtain flutter inward?
- r3dxP
- · Replies 1 ·
Historical information on density
- koroljov
- · Replies 3 ·
IACalculate Maximum Compression Distance of a Spring with Vertical Placement
- Townsend
- · Replies 2 ·
Fluid Mechs: Find Min Mass for Barge Stability
- Kenny Lee
- · Replies 1 ·
Mechanical Energy - Two Questions
- JeremyM
- · Replies 1 ·
Bullet fired in a pendulum. Calculate the initial speed of the bullet.
- febreze
- · Replies 1 ·
What Is the Normal Force Acting on a Box Pulled by a Mule?
- mike98020205
- · Replies 1 ·
Net gravitational force problem in a straight line?
- erik-the-red
- · Replies 1 ·
Calculating Work Done by a Force on a Block
- faet
- · Replies 1 ·
Potential elastic energy problem in an incline
- erik-the-red
- · Replies 2 ·
How Do You Calculate Acceleration with Friction Forces Involved?
- StaticShock
- · Replies 1 ·
Diver speed and angle, basketball shot distance, baseball catch distance
- actingjsg
- · Replies 6 ·
School Question Moved - Forum Rules Followed
- dragon513
- · Replies 3 ·
Hmmm power in a parallel/series circuit
- kpangrace
- · Replies 5 ·
At what points is the potential zero?
- Kali8972
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Springs, friction, angles, and energy
- melodrameric
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Proportion of metal in each alloy?
- Marshall878
- · Replies 13 ·
Centripetal acceleration and friction
- TickleMeElma
- · Replies 3 ·
How Do You Calculate Projectile Motion in Sports Physics?
- actingjsg
- · Replies 1 ·
Why is wind power crucial for future energy production?
- grandpasangel2005
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What is the coefficient of kinetic friction of the surface?
- DKPeridot20
- · Replies 4 ·
Calculate the surface temperature of a human body
- Superdreamer
- · Replies 1 ·
Work and Energy: Calculating Work in Various Situations
- Weatherkid11
- · Replies 1 ·
How Is the Velocity of the Boat Relative to the Earth Calculated?
- courtrigrad
- · Replies 1 ·
How do you show the force of an elevator going up?
- dnt
- · Replies 5 ·
I shot schrodinger's cat and then I ate it
- Just some guy
- · Replies 6 ·
Solving Work and Energy Problems
- chipsdeluxe
- · Replies 7 ·
Interference (Michelson Interferometer)
- Quasi Particle
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What is the force required to lift a car using hydraulic pistons?
- WhatTheBleepDoIKnow
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Work Done by Gravity: Find Magnitude
- AdnamaLeigh
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Graphing a digit oscillating signal
- Mr. Hiyasaki
- · Replies 3 ·
What is the impulse is delivered to the block?
- brad sue
- · Replies 1 ·
How Do You Calculate Electrical Usage and Component Specifications?
- SpatialVacancy
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Rotational motion -angular energy+angular acceleration
- Carolyn
- · Replies 4 ·
Tension and fluid type question
- WhatTheBleepDoIKnow
- · Replies 2 ·
Friction problem that's really bugging me
- hyperglitter
- · Replies 7 ·
How Does Decreasing Speed Affect the Angle of Delta-v in Oval Track Motion?
- WarpDrive
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Moment of Inertia: Solve for Ft & Alpha
- epidote6
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What is the maximum spring stretch for a resting box on an inclined plank?
- Lnav1982
- · Replies 2 ·
Whats the magnitude of the velocity of the wind
- lisakells
- · Replies 4 ·
Net force to stop a truck and car acceleration
- thua
- · Replies 10 ·
A simple Atwood's machine (conservation of energy)
- Seiya
- · Replies 3 ·
Solving Impossible Physics Problem
- richbasterd21
- · Replies 2 ·
Solve Energy Conservation Problem: 17 kg Child Descending 3.5m Slide
- confusedbyphysics
- · Replies 5 ·
Newton's second condition of equilibrium
- aud11888
- · Replies 4 ·
Find the change in potential energy of the system
- Lucey12385
- · Replies 1 ·
What is the volume of the bubble
- je55ica7
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Who is carrying the most weight?
- aud11888
- · Replies 2 ·
Heating Water: Does Energy Loss Affect Temperature Change?
- charlesworth
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Nonequilibrium Applications of Newton's 2nd Law Problem
- noboost4you
- · Replies 11 ·
Where is the centre of gravity for a person lying horizontally on two scales?
- blueice2
- · Replies 3 ·
How to Calculate Momentum and Impulse in a Car Collision
- Ginny Mac
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What is the Period of a Pendulum and String System with a Peg Obstacle?
- lonely86driver
- · Replies 3 ·
How Does Ozone Absorb UV Light's Most Energetic Photons?
- Soaring Crane
- · Replies 1 ·
Find acceleration when you only have a Fx
- monkeypretzels
- · Replies 1 ·
Vector Addition of differing quantities
- ilackinsight
- · Replies 1 ·
Force needed for man to rise on a bosun chair with mass 95 kg
- suspenc3
- · Replies 3 ·
Finding Tension in Frictionless Incline System
- suspenc3
- · Replies 16 ·
Coefficient of friction on inclined slide and dart gun spring compression
- Punchlinegirl
- · Replies 3 ·
Torque problem with rotating rod and masses
- willworkforfood
- · Replies 7 ·
2 blocks, a light string and kinetic friction
- Trista
- · Replies 2 ·
Calculating Spring Constant with a Mass on a Compressed Spring - Simple Solution
- Punchlinegirl
- · Replies 3 ·
Application of Bernoulli's Equation Physics question on FLUIDS unit
- r3dxP
- · Replies 2 ·
Advantage of measuring angles clockwise and counterclockwise from the normal
- Jodi
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Tough AP Test Question:Newton's Laws and Friction
- StarzGoalie30
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Uniform Circular Motion roller coaster
- noboost4you
- · Replies 7 ·
Speed of block A in pulley system with vertical separation h
- cgotu2
- · Replies 5 ·
Photons incident on the retina?
- big man
- · Replies 1 ·
Calculating Forces and Work Done on a Piano Sliding Down an Incline
- confusedaboutphysics
- · Replies 6 ·
Friction + centripetal acceleration problem
- Anisotropic Galaxy
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Solving an Unexpected Inelastic Collision Problem
- Chocolaty
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Tension and force in a suspended mass on a hinged boom
- jewilki1
- · Replies 11 ·
Why Is My Calculation of a Cone's Angular Momentum Incorrect?
- dowjonez
- · Replies 1 ·
Do chest ribs act as a diffraction grating for x-rays?
- insertnamehere
- · Replies 1 ·
How Do You Calculate the Force of Friction for a Moving Car?
- Koyuki
- · Replies 1 ·
Calculating Heat Loss from an Insulated Cup
- jdog6
- · Replies 8 ·
How Does the Radius Affect Angular Momentum of a Cone?
- dowjonez
- · Replies 1 ·