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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Waves and sounds - freshwater and air.
- sailordragonball
- · Replies 18 ·
Electrostatics and aluminium foil problem
- yipkawa
- · Replies 3 ·
Estimate Air Speed Above Plane Wings: Bernouli Eqn
- kbyws37
- · Replies 1 ·
Frequency of reflected sonar wave detected by submarine A
- sailordragonball
- · Replies 1 ·
Carnot Refrigerator coefficient of performance
- Kalie
- · Replies 1 ·
Why Does Charles' Law Give a Different Answer Without Converting to Kelvin?
- MRCHEM
- · Replies 2 ·
Rotational Dynamics and tangential velocity
- flash
- · Replies 2 ·
Find the satellite's altitude above the earth's surface
- whitetiger
- · Replies 4 ·
What Constant Results from Manipulating Gravitational Force Calculations?
- almost__overnow
- · Replies 5 ·
Solving Physics Problems: Finding Speed and Displacement
- dronegun
- · Replies 1 ·
What is the Moment of Inertia of a Hollow Sphere?
- flash
- · Replies 13 ·
Speed of spacecraft (gravitational force)
- whitetiger
- · Replies 2 ·
How Much Energy is Needed to Transform Ice into Water and Steam?
- physics1234
- · Replies 1 ·
Speed of ball before impact using energy conservation and collision
- Jared944
- · Replies 3 ·
Pendulum's and special relativity
- k4wedi
- · Replies 1 ·
How Does Universal Gravitation Apply in Planetary Simulation Errors?
- m3the01
- · Replies 3 ·
Solving Rotational Dynamics Problem: Finding Magnitude of Force
- zachattackback
- · Replies 6 ·
Finding a Topic for I.S.U Research Paper: Electromagnetism
- quickslant
- · Replies 3 ·
Determine the speed of the block EPE
- physics1234
- · Replies 3 ·
How Much Water Do You Lose Through Perspiration While Running?
- physics1234
- · Replies 1 ·
Man in Elevator: What is the Force Exerted on the Elevator Floor?
- Cole07
- · Replies 4 ·
Force and Torque or Center of Gravity ^^
- twotaileddemon
- · Replies 22 ·
Gravitational attraction of two objects
- mrroboto187
- · Replies 8 ·
Heat needed to change temperature of hydrogen gas
- Kalie
- · Replies 5 ·
Max Velocity of a Water Rocket
- flash
- · Replies 1 ·
Solving a Ranking Task: F, A, C, E, B, D
- synx
- · Replies 1 ·
Ice boat with constant wind force and retarding force
- Cole07
- · Replies 22 ·
How Do You Calculate the Mass and Runway Distance for a Lufthansa A320?
- Cole07
- · Replies 6 ·
An Air Conditioner: Refrigerator or Heat Pump?
- Kalie
- · Replies 1 ·
Work done by the hammer in a single stroke?
- fro
- · Replies 1 ·
Fe2+ vs Fe3+ speed in a mass spectrometer
- quickslant
- · Replies 6 ·
Calculating Acceleration and Friction in Rolling Motion Without Slipping
- Pawprint29
- · Replies 2 ·
Centrifuge acceleration expressed in terms of gravity
- ND3G
- · Replies 2 ·
Rotational Energy conservation
- inner08
- · Replies 4 ·
What Is the Speed of a Proton Between Two Plates with a 60V Difference?
- Destrio
- · Replies 4 ·
Tension in a rope suspending a hinged plate
- Sulla
- · Replies 7 ·
2 dimensional elastic collision
- teleport
- · Replies 8 ·
How Strong Is the Sun's Gravitational Pull on Earth?
- whitetiger
- · Replies 2 ·
Amount of watts needed to heat water
- wakejosh
- · Replies 5 ·
Wind chill is heat transfer by?
- wakejosh
- · Replies 7 ·
How Do Piston Sizes Affect Height Differences in Hydraulic Systems?
- map7s
- · Replies 3 ·
Projectile Motion Problem of a ship
- kdf8
- · Replies 3 ·
Resonance frequency of guitar string
- mikefitz
- · Replies 4 ·
Thermodynamics-Net heat absorbed?
- Urth
- · Replies 1 ·
Equilibrium and Center of Gravity problem
- p0ke
- · Replies 1 ·
Radious of the geosynchronous ORBIT
- 8parks11
- · Replies 2 ·
Find final velocity of 20kg sled with 1500J friction work on 25m hill
- fro
- · Replies 10 ·
Kinetic and potential energy in cars and diving
- G-nious
- · Replies 3 ·
Calculating Distance from Earthquake Using P and S Waves
- shaka23h
- · Replies 3 ·
How Does Isothermal Expansion Affect Work Done and Temperature in an Ideal Gas?
- fishingaddictr
- · Replies 7 ·
Equilibrium Temperature of a Spherical Black Body Satellite
- CaptainJames
- · Replies 2 ·
Excited atom decaying to ground state
- Cataklyzm
- · Replies 4 ·
Car accelerating from rest with 20,000 lb load
- ganon00
- · Replies 2 ·
Calculating the Minimum Acceleration to Avoid Hitting a Deer
- ganon00
- · Replies 1 ·
Determine the value of the coefficient of friction
- Janaat
- · Replies 6 ·
Calculating Final Speed in a Momentum Word Problem
- JassC
- · Replies 10 ·
Small cube/large cube sliding problem with friction quickly :/
- rosyroguey
- · Replies 11 ·
How to Find Pressure in a Nozzle Using Bernoulli's Equation?
- map7s
- · Replies 1 ·
Energy and Momentum Conservation in Inelastic Car Collisions
- kenau_reveas
- · Replies 5 ·
Calculating the Mass of the Sun Using Orbital Data and Gravitational Constant G
- 8parks11
- · Replies 3 ·
[Rotational Inertia, Angular Velocity] problem without given masses.
- Alpha Russ Omega
- · Replies 2 ·
How Does Mixing Coffee, Cream, and a Ceramic Cup Affect Temperature Equilibrium?
- map7s
- · Replies 1 ·
Final temperature when 77g ice at 0°C mixes with 300g water at 50°C
- dmolson
- · Replies 2 ·
Resonant length and wavelength of sound?
- jnimagine
- · Replies 1 ·
Wood block floating on water then covered by oil layer
- map7s
- · Replies 1 ·
What is the Relative Velocity of Two Cars in Different Directions?
- fsm
- · Replies 17 ·
I need the normal force, the force of friction, and her acceleration
- sheebajenny
- · Replies 10 ·
Magnitude and Direction, Gravitational force Q
- AznSup3rman
- · Replies 2 ·
What Is the Direction of Tension in a String?
- Aladin
- · Replies 6 ·
Understanding Angular Acceleration in Rigid Bodies Pivoting on a Fixed Axis
- alchemyacoustic
- · Replies 2 ·
Violin string fingered one third down: which harmonic frequency?
- needhelp83
- · Replies 10 ·
Momentum, 2 blocks and a spring
- Selophane
- · Replies 2 ·
Calculating Electron Potential Energy in a Thunderstorm
- metalmagik
- · Replies 8 ·
What is the Period of Oscillation for a Frequency of 315 Hz?
- mikefitz
- · Replies 3 ·
Energy and Work related - Did i do this right?
- mks
- · Replies 4 ·
Pulley w/ attached weights/Linear+Angular acceleration.
- Sulla
- · Replies 6 ·
Calculating Electric Field Strength from a Point Charge
- quickslant
- · Replies 2 ·
Mechanics - Uniform Hoop and Angular Velocity
- Asrai
- · Replies 12 ·
Pulley torque problem and equilibrium with slipping vs tipping
- a_lawson_2k
- · Replies 14 ·
Neglecting Torque Sign for Acceleration Calculation
- Dorothy Weglend
- · Replies 12 ·
Can PDE Solve the Oscillations of a Metal String in a Magnetic Field?
- dukeh
- · Replies 14 ·
Finding spring and damping constants from car suspension sag and decay
- cd80187
- · Replies 4 ·
Ball moving up an incline and coming down.
- bolas
- · Replies 6 ·
How Does a Calorimeter's Composition Impact Heat Transfer Calculations?
- mirandasatterley
- · Replies 5 ·
Wavelength of bullet and proton, same momentum
- Cataklyzm
- · Replies 3 ·
Calculating Friction Force from Pressure in a Bottle of Champagne
- trickymax301
- · Replies 7 ·
Solving Centripedal Motion Challenges in Physics 131
- Robokapp
- · Replies 8 ·
Rod rotates when hit by point mass/ Cons. of angular momentum
- Epictetus
- · Replies 1 ·
Solid sphere vs. disk ramp test and time difference.
- Epictetus
- · Replies 1 ·
Work and internal energy change for heating ice to steam at constant pressure
- Lisa...
- · Replies 5 ·
Acceleration of center of mass of cart-block system
- esoteric deviance
- · Replies 9 ·
Rock on a string on the ceiling?
- atnay
- · Replies 7 ·
Equilibrium temperature of ice, water, and iron cup
- physgirl
- · Replies 1 ·
Question: Capacitors, Time Constant and p.d.
- ProD
- · Replies 1 ·
How Do You Calculate the Mass of a Stationary Train After a Collision?
- EthanB
- · Replies 7 ·
How does incline angle affect the time for a ball to roll down?
- xdanizzlex
- · Replies 6 ·
Forces on a hinged board used as a lever
- ccitycoop
- · Replies 1 ·
Solving for Average Acceleration: An Automotive Example
- ganon00
- · Replies 1 ·
Speed of Electrons and energy level
- Werg22
- · Replies 4 ·
How Does Friction Affect Wheel Motion on a Horizontal Surface?
- kara
- · Replies 1 ·