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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What does the Rayleigh criterion mean and what is image resolution?
- lha08
- · Replies 1 ·
Is My Electrical Circuit Calculation Correct?
- jayjay112
- · Replies 1 ·
AC Circuit Resonance Angular Frequency Calculation
- steveironpump
- · Replies 1 ·
What Went Wrong with Calculating Pulley Efficiency?
- livvy07
- · Replies 4 ·
Finding voltages and currents in circuit with two batteries and resistors
- Rudders
- · Replies 6 ·
Center of Mass Movement in a perfectly inelastic collision
- libelec
- · Replies 1 ·
Converting wavelength of light from water into glass for wedge fringes
- lha08
- · Replies 1 ·
Calculating Power Output of Wind Turbine
- JosephF
- · Replies 4 ·
Write the kinetic energy of the sphere
- ritwik06
- · Replies 23 ·
Minimum wing area to keep plane airborne using Bernoulli's equation
- PetetheGreek
- · Replies 3 ·
Ideal gas compressed adiabatically, cooled isochorically, expanded isothermally
- MeliMo
- · Replies 3 ·
Calorimeter and heat, units question
- fluidistic
- · Replies 2 ·
Magnetic Field, finding the current
- GDGirl
- · Replies 5 ·
Pressure and volume at each stage Carnot engine
- mfm
- · Replies 1 ·
Underwater Pressure: 9.42 ATM, Find Vessel's Depth
- cchiapuzio
- · Replies 1 ·
Magnetic dipole moment of a rotating charged sphere
- thenewbosco
- · Replies 11 ·
Entropy change when copper block cools in water
- MeliMo
- · Replies 2 ·
Andgular Displacement, and speed
- Bdmarti
- · Replies 1 ·
How Do You Calculate Wavelength in Doppler Effect Scenarios?
- lha08
- · Replies 3 ·
How Does Rotating Polaroid Filters Affect Light Intensity?
- bowma166
- · Replies 1 ·
Turn-on voltage of pn junction diodes
- acinom
- · Replies 1 ·
Average Power Input for Wheel with Rotational Inertia
- lzh
- · Replies 2 ·
Calculating Stresses and Angular Velocity in Rotating Shrink Fit Connection
- gsh84
- · Replies 2 ·
What is the maximum stretch of the elastic rope between a tugboat and a barge?
- joemama69
- · Replies 16 ·
How do you count the number of strings on a pulley?
- livvy07
- · Replies 2 ·
Solving for Equal Capacitors in Parallel: Potential of Each
- vipulsilwal
- · Replies 2 ·
Moments Question: Bike Equilibrium Conditions
- Boogeyman
- · Replies 2 ·
Nonlinear spring energy problem
- lzh
- · Replies 5 ·
Constant Angular Velocity Problem
- math_girl
- · Replies 5 ·
Ceiling force on hook supporting pulley with 75 N and 125 N weights
- J89
- · Replies 1 ·
Billiard Balls-Elastic Collision
- CaptainTrips
- · Replies 6 ·
Linear expansion distance problem
- jsalapide
- · Replies 3 ·
First Year Relativity Problem from Exam
- Heresy
- · Replies 4 ·
Temperature-Dependent Length Difference Between Aluminum and Copper Rods
- jsalapide
- · Replies 7 ·
Angular acceleration, is my method correct?
- Dannystu
- · Replies 1 ·
Dimensional Analysis and units of voltage
- Nusc
- · Replies 1 ·
Coulomb's law force on charge in 2D configuration
- godmoktail
- · Replies 22 ·
Voltage after connecting two capacitors
- cashmoney805
- · Replies 4 ·
Newtons law of motion type of question
- Kurwa
- · Replies 6 ·
Projectile motion from edge of building
- J89
- · Replies 1 ·
How fast will a projectile of mass 2m leave a cannon barrel?
- joe215
- · Replies 1 ·
How to Calculate Optimal Thickness for Thin-Film Optical Coatings
- pphy427
- · Replies 4 ·
How to Calculate the Mass of Glycerin with Given Energy and Temperature Change?
- cash.money
- · Replies 2 ·
Force needed to push a 200 lb door 12 ft in 5 seconds
- joemama69
- · Replies 8 ·
How Do You Incorporate Mass into the Biot-Savart Law Formula?
- kodiac9
- · Replies 1 ·
Gravitational Forces: Why Doesn't Sun Revolve Around Earth?
- okgo
- · Replies 1 ·
How Does the Ceiling Exert Force on a Pulley System?
- J89
- · Replies 1 ·
How Does Wavelength Affect Refraction Angle in Diamonds?
- asd1249jf
- · Replies 6 ·
Angular velocity of a bar with torsional spring
- joemama69
- · Replies 6 ·
Calculating spring equilibrium length HW question HARD
- WINSTEW
- · Replies 13 ·
Acceleration on a hill (both up and down)
- BATBLady
- · Replies 5 ·
How Long to Heat Ammonia Gas by 12°C with Solar Power?
- cash.money
- · Replies 1 ·
Why is my net torque calculation giving 0.14 N·m instead of 71 N·m?
- lemonpie
- · Replies 4 ·
What is the Tension of a Cello String with Given Frequency and Linear Density?
- RaPiD
- · Replies 3 ·
Examples of travelling and standing waves
- Pyroadept
- · Replies 1 ·
Total charge on an insulating sphere
- ehilge
- · Replies 3 ·
Block hits a rod with axle in middle
- call-me-kiko
- · Replies 4 ·
How Does Torque Depend on the Position of Forces Acting on a Pen?
- Kurwa
- · Replies 1 ·
AQA AS Level ESA June 09 Exam Paper
- ffrog
- · Replies 1 ·
Diffraction grating, lines per mm, and how to show the spacing
- Sharr-zeor
- · Replies 1 ·
Snell's Law - figuring out index of refraction
- Munky
- · Replies 6 ·
How Do You Calculate the Period of Oscillation for a Physical Pendulum?
- Shatzkinator
- · Replies 9 ·
Longitudinal Waves (Heart Wall of unborn)
- serenity742
- · Replies 8 ·
What is the energy of each photon produced in the decay of the pion?
- cashmoney805
- · Replies 6 ·
Can one float on petrol?Mechanics: in relation to one Swimming in the Dead Sea
- shann0nsHERE
- · Replies 2 ·
Calculating Mass and Height Changes in a Hydraulic Lift
- mattmannmf
- · Replies 1 ·
How high does a floating ice block protrude above water?
- mattmannmf
- · Replies 5 ·
What does cross-sectional area mean in hydraulic lifts?
- mattmannmf
- · Replies 2 ·
Calculate the specific heat capacity of this metal
- shann0nsHERE
- · Replies 2 ·
Rotational and translational energy problem
- call-me-kiko
- · Replies 2 ·
Induced magnetic and electric fields question
- Pyroadept
- · Replies 1 ·
Induced current in long straight wire
- w3390
- · Replies 1 ·
Pushing a box up an inclined plane
- tuffshorty
- · Replies 2 ·
How does the mass of a cannon affect the speed of a fired cannonball?
- Joe91090
- · Replies 17 ·
How Does Water Depth Affect Wave Speed and Particle Motion?
- Yuqing
- · Replies 1 ·
Calculating Post-Collision Speed and Initial Speed of Two Cars at Intersection
- physicsjessic
- · Replies 1 ·
Bubbles turn black when they pop
- 947740
- · Replies 1 ·
What is the Recoil Speed of a Rifle Firing a Bullet?
- physicsjessic
- · Replies 1 ·
How Long Does It Take for a Wave Point to Move Between Two Set Displacements?
- Matt H
- · Replies 1 ·
How Many Dynes to Change Length of Spring by 20cm?
- tuffshorty
- · Replies 2 ·
Change in a siren's volume question
- Pyroadept
- · Replies 3 ·
Flow of water vs mercury vs treacle
- vorcil
- · Replies 2 ·
Torque with a pulley of radius R and mass M
- holmeskaei
- · Replies 1 ·
Gravitational force, Speed, and period of a Satellite.
- Imuell1
- · Replies 1 ·
Thermodynamics: Adiabatic Compression
- Wobble
- · Replies 2 ·
Force on wire due to magnetic field
- nickclarson
- · Replies 1 ·
Determine the point at which the electric field is zero.
- georgeh
- · Replies 6 ·
Orbital Period of Apollo Mission
- Immy2000
- · Replies 6 ·
Simple Mass-Spring System Problem
- tmacarel
- · Replies 1 ·
Solve Chain Torque Problem: Find Distance from Left Chain
- Nivlac2425
- · Replies 1 ·
How Loud Are Seven Clarinets Compared to One?
- wadesweatt
- · Replies 11 ·
How Does Phase Difference Affect Amplitude in Transverse Wave Interference?
- Oijl
- · Replies 1 ·
What is the velocity of medicine emerging from a hypodermic syringe?
- rawimpact
- · Replies 1 ·
How Does a 2.80 dB Difference Affect Sound Intensity?
- Oijl
- · Replies 4 ·
How Far Apart Are Light Fringes in a Double Slit Experiment?
- hardwork
- · Replies 2 ·
How Do You Calculate the Mass of an Aluminum Cup in a Heat Transfer Problem?
- Knfoster
- · Replies 1 ·
Damped oscillations - Finding damping coefficient
- diffusion
- · Replies 2 ·
Calculate Flow Velocity and Hole Diameter in Water Tank Problem
- rawimpact
- · Replies 9 ·
Double Slit Interference and linear distance
- rachiebaby17
- · Replies 1 ·
Calculating Third-Order Maximum Angle for Grating
- rachiebaby17
- · Replies 1 ·