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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How Do You Calculate Backward Power and Forces in Physics Problems?
- Izekid
- · Replies 6 ·
Angular speed after increasing radius from 1m to 100m
- eosphorus
- · Replies 1 ·
Miscalculation with speeds of electrons?
- asdf1
- · Replies 7 ·
What is the wavelength of the x-rays in the direct beam?
- asdf1
- · Replies 8 ·
Can Photons Completely Transfer Energy and Momentum to Free Electrons?
- asdf1
- · Replies 2 ·
AZING!Calculating Vacuum Buoyancy: Maximum Weight a Vacuum Cleaner Can Lift
- je55ica7
- · Replies 4 ·
How to Find Friction Coefficient Without Mass?
- smileyjen523
- · Replies 4 ·
PHYSICS work/power/energy question
- r3dxP
- · Replies 3 ·
Calculating Length of Airplane Start Lane for 300 km/h Acceleration
- Izekid
- · Replies 2 ·
Relative Velocity in River Navigation: Solving for Current and Boat Speed
- Jacobpm64
- · Replies 4 ·
Calculating Stress in Brass Tube and Steel Bar with Compression Load
- snowygrouch
- · Replies 6 ·
Effect on electron in magnetic field
- xiangyu7
- · Replies 1 ·
Calculating Absorber Thickness for Radiation Intensity Reduction - x=0.693/(miu)
- asdf1
- · Replies 2 ·
Period of oscillating square block on axle with spring
- -=CN=-
- · Replies 3 ·
What is the potential energy of the pair?
- dwx1
- · Replies 1 ·
Force needed to hold a 1000 N wheelbarrow with handles 1 m from the wheel
- abct
- · Replies 1 ·
Tension in a helium-filled balloon fastened to a vertical line
- je55ica7
- · Replies 8 ·
The work of friction forces - and - the total work of systems
- Bonulo
- · Replies 20 ·
X-Ray Production in Beiser's Physics Textbook: Typo or Not?
- asdf1
- · Replies 5 ·
How Do You Calculate Electric Field Strength in a Geiger Counter?
- thehigaman
- · Replies 1 ·
Capacitance Analogy: Thinking About Resistors Like Pipes
- allergic
- · Replies 2 ·
What Is the Angle Between the Clock Hands at 11:12 AM?
- tatoo5ma
- · Replies 5 ·
Finding velocity components for football field goal kick
- lbofin1
- · Replies 5 ·
Circular Motion of Newton's Laws
- eunhye732
- · Replies 2 ·
Electric Potential Energy & Acceleration of 2 Metal Spheres
- Tony11235
- · Replies 2 ·
Finding how fast cylinder length changes when radius decreases
- kenny87
- · Replies 8 ·
A perplexing projectile problem
- amoretti
- · Replies 12 ·
Centroids and Center of Gravity
- physicsss
- · Replies 9 ·
Can velocity and displacement be negative in physics?
- idontspeakmath
- · Replies 1 ·
Calculating Lowest Frequency of EMR to Initiate Photocurrent
- ussrasu
- · Replies 3 ·
Kepler's 3rd Law and the Doppler Effect
- dekoi
- · Replies 7 ·
Kinetic and Potential Energy in Simple Harmonic Motion
- Tabe
- · Replies 4 ·
Gravitational Force On A Spaceship
- Lucretius
- · Replies 9 ·
The Coefficient of Kinetic Friction
- Snake
- · Replies 1 ·
Torque and Equillibrium problem.
- Atomos
- · Replies 6 ·
Using energy methods in a moment of inertia problem?
- erik-the-red
- · Replies 9 ·
Physics lab: thought lab energy changes
- r3dxP
- · Replies 1 ·
How Can I Calculate the Kinetic Friction Between Plastic and Cardboard?
- NutriGrainKiller
- · Replies 8 ·
How Is the Fetal Heart Wall Speed Calculated Using Ultrasound?
- hotmail590
- · Replies 5 ·
How is the tension in the string related to the electric force on a pith ball?
- mich_v87
- · Replies 1 ·
Positive work done by FRICTION?
- Erik_at_DTU
- · Replies 23 ·
What are the two possibilities for its x component?
- confused-vectors
- · Replies 6 ·
Finding capacitence, used C = (EoA)/d, but didn't work
- mr_coffee
- · Replies 6 ·
Constant Speed for a Sliding Wood Box
- godplayer
- · Replies 12 ·
Finding acceleration and tension for two blocks on an inclined plane
- badtwistoffate
- · Replies 11 ·
Car collision problem with reaction time and braking
- themadperseid
- · Replies 2 ·
Relative Velocity/Motion Problem
- Jacobpm64
- · Replies 2 ·
Maximum weight of block A for stationary system with block B on table
- Solms
- · Replies 1 ·
Finding the cafpacitance, I thought it was in series
- mr_coffee
- · Replies 4 ·
How does atmospheric pressure affect the readings in a mercury tube manometer?
- Pengwuino
- · Replies 8 ·
Squeezing a capacitor, how does it effected the charge?
- mr_coffee
- · Replies 3 ·
Find the force on a point charge
- mich_v87
- · Replies 1 ·
Space shuttle centripetal acceleration and car turning on flat road
- jrd007
- · Replies 17 ·
Energy required to remove all three electrons from Li
- positron
- · Replies 6 ·
Calculating Cyclist Speed: 10 Secs and 5 Secs
- Izekid
- · Replies 1 ·
More with Centripetal Acceleration
- rockmorg
- · Replies 1 ·
How Do You Calculate the Correct Heading for an Airplane in Wind?
- byronsakic
- · Replies 6 ·
Solving Snow Shovelling Problem - 10m x 1.5m
- standardflop
- · Replies 1 ·
How Much Solar Panel Area is Needed for Household Electricity Needs?
- physicsss
- · Replies 10 ·
Gorgon decay into photon and Lexicon using energy-momentum conservation
- rei
- · Replies 2 ·
Potential energy of the system increase or decrease?
- brandon26
- · Replies 5 ·
Undeflected electron beam velocity and orbital radius in crossed fields
- jena
- · Replies 4 ·
Find angular frequency and amplitude from two velocity-displacement pairs in SHM
- 1/137.00
- · Replies 1 ·
How Do You Calculate the Ratio of Final to Initial Kinetic Energy in Collisions?
- Meteo
- · Replies 6 ·
What Is the Radius of the Amusement Park Ride?
- rockmorg
- · Replies 3 ·
Downhill Skier: Calculating Resultant Forces
- ruzoo
- · Replies 2 ·
Calculating Wind Turbine Radius for 571 W of Power
- physicsss
- · Replies 10 ·
Finding the center of a circular path from velocity and acceleration data
- shawpeez
- · Replies 7 ·
Can an object have negative momentum?
- ms. confused
- · Replies 5 ·
Ratio of nuclear to atomic radius
- positron
- · Replies 1 ·
Projectile Launcher: Simple Ideas for Physics Lab
- cscott
- · Replies 3 ·
Potentials of charge distribution
- don23
- · Replies 2 ·
PHYSICS PROBLEM-should be easy for AP students
- Bucky8624
- · Replies 18 ·
Solve Ball Drop Problem: Find Initial Velocity
- minhngo
- · Replies 9 ·
What Is the Frequency of Vibration When a Cube Is Released?
- dekoi
- · Replies 1 ·
Understanding Static Equilibrium in a Scaffold Setup
- Kenny Lee
- · Replies 2 ·
Reducing 4 variable algebra in K-map
- success2be
- · Replies 8 ·
How Can Angle of Release Affect Centrifugal Force in Circular Motion?
- rocketboy
- · Replies 1 ·
Calculating Change in Kinetic Energy of 0.23kg Object
- brad sue
- · Replies 2 ·
Calculating Coordinate of B in Sinusoidal Wave Equation
- dekoi
- · Replies 1 ·
What Is the Electric Field at the Center of Two Oppositely Charged Curved Rods?
- Rashedbhai007
- · Replies 1 ·
What force must the seals of a passenger door resist at 10000m altitude?
- richter1966@hotmail.
- · Replies 1 ·
Momentum conserved and energy isn't conserved?
- asdf60
- · Replies 18 ·
A Finite Line Charge's Electric Field?
- adamc637
- · Replies 1 ·
Work needed to shovel 10 cm of snow from a sidewalk
- Erik_at_DTU
- · Replies 7 ·
Calculating Energy Released by Dynamite Explosion
- asdf1
- · Replies 6 ·
Finding acceleration and tension with hanging mass pulling block across table
- PhunWithPhysics
- · Replies 8 ·
Four-path walk: finding resultant displacement with L=310m, θ=50°
- kevinlikesphysics
- · Replies 7 ·
Calculating Net Work: Solving for P with Coefficient of Kinetic Friction
- Morokana
- · Replies 3 ·
What is the Total Retarding Force Required to Stop a Race Car Using a Parachute?
- ChopSuey
- · Replies 4 ·
Two stacked masses with applied force and friction
- brad sue
- · Replies 3 ·
Need confirmation- Energy and PEgrav
- jakeowens
- · Replies 2 ·
Calculating Electric field strength
- DaMastaofFisix
- · Replies 5 ·
How Much Work Is Done Against Friction?
- DKPeridot20
- · Replies 1 ·
Buoyant Force and Volume: Doubling the Volume, Doubling the Displacement?
- bud102
- · Replies 5 ·
How do I solve this mechanics velocity problem involving a hanging chain?
- Just some guy
- · Replies 21 ·
Air escaping from a heated cylindrical tube open at top
- asa!!
- · Replies 10 ·
Calculating Theoretical Time with the T = 2 (pie) Formula
- SS2006
- · Replies 2 ·
Work-energy with constant radial force on a spiral rod
- Warr
- · Replies 7 ·