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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Astronaut in space, calculating velocity etc
- Attis
- · Replies 12 ·
Compute the distance x and tension of each cable
- MrMechanic
- · Replies 6 ·
Direction of Friction in Rolling Objects
- whoareyou
- · Replies 32 ·
Capacitance - combining multiple capacitors for equivalent C
- MathewsMD
- · Replies 7 ·
Thermal equilibrium for ice being added to liquid water
- Mangoes
- · Replies 3 ·
2D Kinematics Problem involving subtended angle
- RjD12
- · Replies 4 ·
Transfer functions for low-pass, bandpass, and high-pass filters
- oddjobmj
- · Replies 6 ·
How Do You Model and Solve a System of Three Masses Connected by Springs?
- ggilvar99
- · Replies 1 ·
Skier on 27° slope with headwind and friction forces
- CougarPride
- · Replies 10 ·
Magnetic field including long wires and a quarter-circle wire.
- Ascendant78
- · Replies 6 ·
Finding F1 - Summing forces on a box
- jdawg
- · Replies 13 ·
Conceptual problem invoving mirrors
- Jpiverson23
- · Replies 1 ·
Rock thrown upward from cliff reaches 18.6 m, lands 6.60 s later
- rg3po
- · Replies 1 ·
Calculating Object Speed with Changing Force Applied
- s.dyseman
- · Replies 11 ·
Determining distance using luminosity
- bobo1455
- · Replies 7 ·
Equilbrium temp of ice and steam mixture
- castrodisastro
- · Replies 9 ·
Voltage of an infinite cylinder with nontrivial reference point
- programmer1813
- · Replies 2 ·
Understanding Velocity in a Massless, Frictionless Pulley System
- rajumahtora
- · Replies 10 ·
Change in energy of a capacitor
- MathewsMD
- · Replies 1 ·
DC Circuit Equivalent Resistance Problem
- shantam777
- · Replies 1 ·
Calculating net gravitational force on the moon
- rymath
- · Replies 2 ·
Electron's movement due to electric forces
- Rugile
- · Replies 3 ·
Moment and force calculation for cantilever beam
- Haye
- · Replies 6 ·
Kinematics - projectile motion - time to maximum height?
- kenji1992
- · Replies 8 ·
How Is Tension Calculated When a Woman Dangles a Mass Over a Cliff?
- spark693
- · Replies 9 ·
Kinematics - How fast does the car stop?
- kenji1992
- · Replies 3 ·
Calculating Earth's Mass Using Algebra
- surferbarney
- · Replies 8 ·
Electric Potential inbetween Conducting Metal Ball and Thick Shell
- Gwozdzilla
- · Replies 10 ·
Creating Artificial Gravity in Space: Using Centripetal Force on a Space Station
- jdawg
- · Replies 4 ·
Probing Nuclei with Electron Scattering
- TomCass
- · Replies 1 ·
X-Ray Diffraction: Solving for θ Using nλ=2dsinθ
- dawud
- · Replies 3 ·
Strength of electric field in fringe region vs. central region?
- carnivalcougar
- · Replies 4 ·
Work Problem - Pushing a lawnmower
- francisco300
- · Replies 18 ·
Get acceleration from a distance-time graph
- RuteNL
- · Replies 4 ·
Constrained mass point subject to elastic force and weight
- Ocirne94
- · Replies 3 ·
Angle between velocity and acceleration for car on circular path with varying speed
- Albeaver
- · Replies 4 ·
What Is the Acceleration Needed to Stop an Arrow?
- B18
- · Replies 3 ·
Harmonic oscillation; new amplitude?
- 6c 6f 76 65
- · Replies 10 ·
Work done by electric force on a point charge in a cylinder?
- cesaravila
- · Replies 5 ·
Electric Point Charge and Directional Force
- quibble42
- · Replies 1 ·
How to calculate the angle using work, displacement and 2 forces?
- fixedglare
- · Replies 9 ·
Potential, capacitance and energy for concentric wire cable
- Queequeg
- · Replies 2 ·
Solid vs hollow shaft design for 1000Nm torque with buckling analysis
- AnkleBreakeer
- · Replies 12 ·
Good modulation - Why do we need Fp fs?
- seledeur
- · Replies 13 ·
Lucy's Stone: A Physics Challenge
- calculator20
- · Replies 3 ·
Thevenin Equivalent: Solving Circuit Problems
- princejan7
- · Replies 2 ·
Getting the voltage to drop in a battery?
- mot
- · Replies 3 ·
Standing Waves Tension and wavelength
- xtrubambinoxpr
- · Replies 2 ·
How Does a Wax Blob Affect the Angular Velocity of a Rotating Rod?
- nil1996
- · Replies 5 ·
Why does pressure differ at the same depth when a tube is open at one end?
- blahraptors
- · Replies 4 ·
Can a rectifier circuit be used in a DC motor to convert AC to DC?
- theBEAST
- · Replies 5 ·
Find the upward acceleration of the man
- avistein
- · Replies 38 ·
Gaussian sphere problem, non uniform charge
- Duderonimous
- · Replies 6 ·
Distance covered by car while decelerating
- 11NEPHILEM11
- · Replies 4 ·
Ambiguous Electric-Field magnitude
- PHYHelp519
- · Replies 1 ·
Gauss's Law applied to an infinite sheet of charge
- ecgprc
- · Replies 2 ·
Heat flux as a fraction of energy flux due to thermal re-radiation
- cwbullivant
- · Replies 7 ·
Direction positive and negative charges will movebetween electrodes?
- carnivalcougar
- · Replies 7 ·
Discrepancies with Coulombs law?
- carnivalcougar
- · Replies 7 ·
Finding gas pressure in a closed vessel with temperature change
- jim1174
- · Replies 6 ·
Momentum Conservation in Collisions - How to Solve for Resulting Velocity
- ilovephysics07
- · Replies 2 ·
How much work can be done given force, mass, angle & displacement?
- fixedglare
- · Replies 18 ·
Current limit in hemisphere conductor in metal crucible
- Hazzattack
- · Replies 8 ·
How much work can be realized? Simple physics I can't understand.
- fixedglare
- · Replies 6 ·
Find the acceleration of 3 blocks and tensions
- avistein
- · Replies 6 ·
Highest order of hydrogen spectral lines with diffraction grating
- elevenb
- · Replies 1 ·
Calculating Sun Mass Loss Over Time Using E=mc^2
- bobo1455
- · Replies 12 ·
Why is the pressure inside a bubble greater than the pressure outside?
- aaaa202
- · Replies 1 ·
Precision of the values of gravitational constant G
- david22
- · Replies 2 ·
Acceleration of mass moving along a radial track.
- peripatein
- · Replies 13 ·
How to Measure Potential Difference Across Series-Connected Batteries?
- Lee33
- · Replies 1 ·
Force required to hold 120lb roller at rest on rough incline
- MrMechanic
- · Replies 14 ·
Finding angle of refraction when light enters glass at 40 degrees
- Oneablegal
- · Replies 3 ·
Charge needed to ionize the air
- Lee33
- · Replies 6 ·
Why is the electric field inside of a conducting sphere zero?
- Lamebert
- · Replies 5 ·
Equilibrium problem help needed
- greyshrop
- · Replies 2 ·
Kirchhoff's Rule-Current in a Two Loop Circut
- Hayliee30
- · Replies 5 ·
How to Find the Number of Nuclei of Element A at Time t0?
- utkarshakash
- · Replies 19 ·
Surface waves vs longitudinal waves
- pscience
- · Replies 2 ·
Understanding Electric Charge Distribution in Conducting Spheres
- Phy6dummy
- · Replies 4 ·
How Do I Calculate Y-Velocity and Launch Velocity from Projectile Motion Data?
- BrownBoi7
- · Replies 4 ·
What Causes the Velocity of a Cable Car to Change in the Rain?
- peripatein
- · Replies 22 ·
Ideal gas law and thermodyanimic processes
- castrodisastro
- · Replies 4 ·
Calculating Pendulum Length with Given Velocity and Tension
- WadeS
- · Replies 8 ·
Finding a reflected vector using the projection formula
- sakkid95
- · Replies 3 ·
What kind of energy transfers are these
- energychartflo
- · Replies 4 ·
Finding equation for rate of change of distance of spiraling electron
- lausco
- · Replies 6 ·
Can two objects approaching from opposite sides have relative speed exceeding c?
- Dgray101
- · Replies 16 ·
Finding angles for maximum intensity from two coherent dipole sources with phase lag
- Saitama
- · Replies 10 ·
Energy and radius of a shock wave
- david22
- · Replies 6 ·
Finding frequency, wavelength and velocity from y(x,t)=2sin(6t-0.5x)
- FaraDazed
- · Replies 1 ·
What is the Maximum Speed at Point Q Without Breaking the String?
- tdreceiver17
- · Replies 6 ·
The Doppler Effect of police car
- Sastronaut
- · Replies 2 ·
Change in entropy of a heat engine
- castrodisastro
- · Replies 7 ·
Block pushed up an incline, velocity using work
- alexs2jennisha
- · Replies 12 ·
Shell's Linear Charge density (electric field mistake?)
- blackbrawler
- · Replies 1 ·
How does a deer transfer energy to other objects and animals?
- energychartflo
- · Replies 1 ·
How Does Water Efflux Impact the Acceleration of a Container on a Rough Surface?
- utkarshakash
- · Replies 20 ·
Force can be represented by a scalar?
- Tiven white
- · Replies 1 ·
How to Launch a Satellite with Apogee 2.5 Times the Planet's Radius?
- Zatman
- · Replies 2 ·