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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Standing Wave Question: Wavelength of Resultant Wave with Two Opposing Waves
- vivekfan
- · Replies 3 ·
Fluid Mechanics - Bouyancy Question
- wesDOT
- · Replies 1 ·
Kinematics: 1-D Motion Problem with Inclined Surface - Solving for Distance
- tascja
- · Replies 11 ·
Car Coasting Up a Slope: Determining Distance Traveled Before Rolling Back Down
- talaroue
- · Replies 2 ·
When is Translational Momentum Conserved
- Triangulum
- · Replies 1 ·
Is Momentum Conserved in Our Collision Lab Experiment?
- soccergirl14
- · Replies 1 ·
How to Calculate Revolutions of a Wheel with Applied Brakes?
- Digdug12
- · Replies 2 ·
Finding Acceleration of a Pendulum Ball at Point A
- ah19
- · Replies 2 ·
Will the Car Stop in Time to Avoid Hitting a Child in a School Zone?
- Mitchtwitchita
- · Replies 3 ·
AP Physics Free Response: Friction between two blocks
- be547
- · Replies 3 ·
What is the discrepancy between time measurements in different frames?
- raymondtco
- · Replies 11 ·
Can Initial Intensity Differ from Incident Intensity?
- vivekfan
- · Replies 2 ·
Electron Moving in a Uniform Magnetic Field
- iceman2048
- · Replies 8 ·
What is the distance traveled by a rollercoaster based on the Doppler effect?
- starhallie
- · Replies 2 ·
Finding angle between vectors and vector projections
- dhruv_arora
- · Replies 6 ·
Relativistic Addition of Electron Velocities
- Cheezay
- · Replies 4 ·
Finding the electric field magnitude, and angle below the horizontal
- jheld
- · Replies 1 ·
How Do You Determine Lines of Maxima and Minima Based on Gradient?
- 385sk117
- · Replies 1 ·
Parallel axis theorem + rotational inertia
- lemonpie
- · Replies 21 ·
Change in temperature between the initial and final state of the gas?
- mattmannmf
- · Replies 2 ·
Advantage of High Voltage Electricity Transmission
- Illuminitwit
- · Replies 2 ·
Finding electric field 3 cm along a thin rod.
- jheld
- · Replies 1 ·
How far can a 55kg person fall and break and leg?
- cohort
- · Replies 12 ·
Frequency, Velocity, Voltage, and Intensity
- Illuminitwit
- · Replies 8 ·
How Does Physics Explain Unbreakable Egg Holders and Rotating Drop Models?
- mike_302
- · Replies 12 ·
Finding the angle from two charges repelling each other.
- jheld
- · Replies 7 ·
Solving the Net Force on a Wooden Box
- brentwoodbc
- · Replies 5 ·
How Far is an Object Orbiting Earth if Its Period is 32 Days?
- Digdug12
- · Replies 10 ·
Converting Energy Lines from Electron Volts
- Illuminitwit
- · Replies 8 ·
Calculate Velocity of Mechanical Bucking Bull at Cal State Chico
- marekkpie
- · Replies 3 ·
How Fast Must a Quarterback Throw to Achieve a 171 Meter Pass?
- Phoenix838
- · Replies 2 ·
What Is the Tension in the String as the Hoop Descends?
- jjlandis
- · Replies 1 ·
Length Contraction and a Relativistic Angle
- Cheezay
- · Replies 2 ·
Fluids Conceptual Questions: Understanding Pressure and Bernoulli's Equation
- vivekfan
- · Replies 2 ·
Frequency of Harmonic Oscillator w/ Gravitational Force
- Ofey
- · Replies 9 ·
Finding ammeter reading in a parallel-series circuit
- suey
- · Replies 3 ·
A Rocket's Distance from the center of the moon
- gc33550
- · Replies 17 ·
Space elevator cable tension and climber dynamics
- jones590
- · Replies 16 ·
EXAM QUESTION black hole force?
- fball558
- · Replies 5 ·
Calculate speed with Force/mass/Fg?
- IniX
- · Replies 1 ·
Kirchoff's Rule: How do you determine what direction to draw your loop?
- jamba88
- · Replies 3 ·
Essay Topic Ideas on Physics: Limited Resources
- pandemic
- · Replies 4 ·
Moment of Inertia - Hollow Objects
- JerS
- · Replies 1 ·
Is Zero Force Required for Constant Velocity in Physics?
- nwowen
- · Replies 2 ·
Affect on stored energy if charge is doubled
- t_n_p
- · Replies 3 ·
Centripital Acceleration/G-Force question
- Schmidget
- · Replies 3 ·
Prooving Elastic Collisions equations
- Lord Dark
- · Replies 1 ·
Capacitors in Parallel and Series
- meadow
- · Replies 4 ·
Do Lasers Have Harmonics Like Sound Frequencies?
- Niles
- · Replies 3 ·
Immersion heater and water freezing energy problems
- kris24tf
- · Replies 5 ·
Repulsion between two small spheres
- objective33
- · Replies 1 ·
Vector question (true or false)
- riverjib
- · Replies 3 ·
Magnetic Field inside Solenoid and EMF
- jderm
- · Replies 1 ·
How Does Tension Affect Motion on a Frictionless Surface?
- wilso119
- · Replies 2 ·
Helical Trajectory - magnetic field
- GDGirl
- · Replies 9 ·
How Does Adding Energy Affect Entropy in Harmonic Oscillators?
- gc33550
- · Replies 2 ·
Proton moving through a magnetic field
- dprimedx
- · Replies 6 ·
Photoelectric Effect - Wavelength of a Photon
- BioBabe91
- · Replies 2 ·
Funnel vs Cylinder: Find Out Which Is More Efficient for Pouring Water
- Melawrghk
- · Replies 5 ·
Energy methods for spring velocity
- physicsnewb7
- · Replies 3 ·
New value of the particle's total energy?
- vrobins1
- · Replies 1 ·
Moment of Inertia - Non uniform density
- JerS
- · Replies 1 ·
Cart negotiating loop with minimum normal force constraint
- hollyrenee
- · Replies 6 ·
Gravitation and its effect on elliptical orbits
- marekkpie
- · Replies 6 ·
Solving Force on a Hanging Sign
- fball558
- · Replies 4 ·
N-carriers, number density, energy gap E_g, temperature
- Yroyathon
- · Replies 11 ·
Swinging on a Vine? - Calculate Tension with Physics
- fball558
- · Replies 3 ·
Why Do Energy Levels in Multielectron Atoms Differ from Hydrogen?
- albertsmith
- · Replies 1 ·
Which Direction Does the Force of Tension Act in a Hanging Rope?
- ksinelli
- · Replies 2 ·
Using a Wind Tunnel to Determine Drag Coefficient: An Experimental Approach
- protossadv
- · Replies 3 ·
Change of temperature of ideal gas
- hubber26
- · Replies 2 ·
Solving Motion Problems Involving a Piñata
- ashvuck101
- · Replies 1 ·
How Do You Calculate Fluid Force on a Rotated Square Tank?
- tnutty
- · Replies 1 ·
Conducting slab between a parallel-plate-capacitor
- Tufts
- · Replies 5 ·
How Do Capacitors Affect Potential Differences in a Circuit?
- Dell
- · Replies 11 ·
What Is the Significance of the de Broglie Equation?
- Pyroadept
- · Replies 1 ·
What is the height of the ice above water level in each glass?
- gc33550
- · Replies 8 ·
Magnitude of q ~ What am I doing wrong?
- Illuminitwit
- · Replies 4 ·
How Does a Connecting Wire Affect Electric Fields Between Two Charged Spheres?
- cranincu
- · Replies 1 ·
Find incident angle for light ray through glass block with parallel exit
- Sith Lord 13
- · Replies 3 ·
Thermodynamic refrigerator Problems
- Norngpinky
- · Replies 5 ·
What is the charge on the left-hand plate of C4?
- driedupfish
- · Replies 1 ·
Comparing kinetic energy of electron and alpha particle with same radius of curvature
- doggitz
- · Replies 1 ·
Work under constant temperature
- ymehuuh
- · Replies 1 ·
What determines the shape and spacing of equipotential lines?
- jamba88
- · Replies 2 ·
How Does a Vertical Spring Behave Under Various Forces?
- starhallie
- · Replies 4 ·
Simple Harmonic Motion and pendulum clock
- Ogir28
- · Replies 6 ·
Finding magnitude and x-coordinate of the third charge
- jheld
- · Replies 3 ·
Identifying the forces acting on masses in uniform circular motion.
- deancodemo
- · Replies 1 ·
Simple Tension Problem: Calculating Tension and Acceleration
- physicsnewb7
- · Replies 4 ·
Force of solar radiation on earth
- indie452
- · Replies 4 ·
Is the Plastic Ball's Charge Positive or Negative in a Uniform Electric Field?
- redhawks
- · Replies 5 ·
Why can we see the image produced by a converging lens?
- Johnny B.
- · Replies 3 ·
Solving for Friction Force on a Ramp
- chem_is_lovex
- · Replies 2 ·
What Causes an Object to Stop after a Collision?
- mike_302
- · Replies 1 ·
How Efficient Is the Spring in Stopping a Rat on a Ski Slope?
- LoveandHate
- · Replies 1 ·
Elastic Collision: Solving Components of the Problem
- harisf
- · Replies 4 ·
What is the Wavelength of a 30 keV Electron?
- Pyroadept
- · Replies 1 ·
How Does Acceleration Affect Weight Measurements on a Scale?
- snipefour
- · Replies 2 ·
Estimate the buoyant force exerted on your body by the air
- ironhawk316
- · Replies 2 ·