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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Why do we assume cylindrical symmetry in Ampere's Law?
- maccha
- · Replies 1 ·
Why Must Voltage & Current Have a π/2 Phase Difference in Pure Circuits?
- thereddevils
- · Replies 1 ·
Intensity of unpolarized light through two polarizers
- Linus Pauling
- · Replies 3 ·
Power Dissipation (more than one battery)
- ReMa
- · Replies 2 ·
Rate at which energy is delivered
- dpeagler
- · Replies 1 ·
Direction of acceleration of a yo-yo
- mybrohshi5
- · Replies 6 ·
Vander Wall Gas Thermometer: Ideal Gas Law and Triple Point Calibration
- completenoob
- · Replies 8 ·
Intensity of light with given power through a polarizer
- Linus Pauling
- · Replies 3 ·
Speed of catching a falling ruler
- bobbajobb
- · Replies 12 ·
Electric field between positive planes
- novedevon
- · Replies 1 ·
Electromagnetics = Biot-Savart Law around square path
- satchmo05
- · Replies 2 ·
Circuit Problem with Wattages instead of Resistances
- aznshark4
- · Replies 6 ·
Destructive Interference when walking toward an antenna
- skibum143
- · Replies 1 ·
Measuring gravitational field on another plane with a pendulum
- chara76
- · Replies 5 ·
Average resistance force to stop an object
- bamfazoid
- · Replies 6 ·
Fraction of Radiation Detected
- darkchild
- · Replies 13 ·
Another buoyancy problem. help
- Cranford803
- · Replies 1 ·
Solving Harmonics Problems: Wavelength & Frequency
- jackleyt
- · Replies 1 ·
Calculating Change in Entropy for Water Vaporization at 100oC
- Cranford803
- · Replies 1 ·
Buoyancy problem answer check. Thanks
- Cranford803
- · Replies 1 ·
Rearranging coulombs law equation
- Eranu
- · Replies 8 ·
What is the velocity and pressure of water in a narrowed pipe?
- Foghorn
- · Replies 1 ·
I can't understand this circuit
- kliker
- · Replies 4 ·
Calculating Am-241 Content from Radioactivity Measurements
- triac
- · Replies 2 ·
Potential Due to a Charged non conducting sphere
- snshusat161
- · Replies 4 ·
Making A the Subject of F in Rearranged Equations
- helpwiysciene
- · Replies 7 ·
Does y(x,t) Satisfy the One-Dimensional Wave Equation?
- TheTourist
- · Replies 1 ·
Spring Mass System: Calculating Frequency, Acceleration, and Velocity
- d.r
- · Replies 4 ·
Which Diameter Should Be Used in Parachute Design Calculations?
- klokes
- · Replies 3 ·
Which Object Has Greater Momentum if Kinetic Energy is Equal?
- Alms
- · Replies 6 ·
How Does Time Dilation Affect Dinner Time on a Starship Traveling at 0.93c?
- iaberrant
- · Replies 6 ·
Tension and centripetal forces
- Misr
- · Replies 18 ·
What is the magnitude of the magnetic field at the center of the arc?
- anna_628
- · Replies 3 ·
Geostationary Satellite: Height, Equator, Uses
- ride4life
- · Replies 2 ·
Acceleration and Force in Towing Scenario
- cheerspens
- · Replies 3 ·
What Are Two Properties of a Single Crystal?
- ZedCar
- · Replies 2 ·
Centripetal acceleration of a satellite orbiting Earth
- ride4life
- · Replies 10 ·
Solving Transverse Wave Problems: 25 Hz Frequency, 4.00E-2s Period
- jackleyt
- · Replies 8 ·
Determining overtones of sound waves in a pip
- jackleyt
- · Replies 2 ·
Speed of sound in a gas (sig fig problem)
- darryw
- · Replies 10 ·
Velocity and Acceleration at Maximum Compression (help, test tomorrow?)
- HeyBurrito
- · Replies 5 ·
Finding Power in watt with a real battery
- dmsgo89
- · Replies 2 ·
Finding the period with mass attached to two springs
- aal0315
- · Replies 2 ·
Wavelength, frequency, and E field amplitude from magnetic field equation
- Linus Pauling
- · Replies 3 ·
Rock's Angular Motion in Bicycle Wheel Braking
- freak_boy186
- · Replies 3 ·
Intensity of light through two polarizers and Malus's Law
- Linus Pauling
- · Replies 2 ·
Solving Mike's Crate Motion After 2 Secs
- cheerspens
- · Replies 3 ·
Find the Height of an Inclined Plane for a Rolling Disk
- juggalomike
- · Replies 3 ·
Show eigenfunctions are orthogonal
- indie452
- · Replies 1 ·
Max Power of 1.3cm Diameter Laser Beam Propagating Air
- Linus Pauling
- · Replies 2 ·
Time and max. height of stone thrown into air.
- shannon.leigh
- · Replies 2 ·
What properties of a material make it a good insulator and opaque?
- chmmr
- · Replies 1 ·
Finding Frictional Coefficient for Constant Speed Crate
- Booska
- · Replies 1 ·
What Was the Original Mass of the Ice Block in the Calorimetry Experiment?
- aal0315
- · Replies 8 ·
Elastic and Inelastic Collisions in One Dimension - Need Help, due tonight
- Princess19
- · Replies 17 ·
Change in Resistance due to Thermal Expansion
- munchy35
- · Replies 2 ·
Moment of inertia of two objects after collision
- hwhanson
- · Replies 1 ·
How does the change in voltage affect the brightness of a light bulb?
- 05holtel
- · Replies 2 ·
Help transposing formula please :-)
- ashisstuck
- · Replies 1 ·
Electron Maximum Speed in Uniformly Charged Sphere
- trignum07
- · Replies 1 ·
Why AC instead of DC for Electric Power Transmission?
- ZedCar
- · Replies 2 ·
Inner/Outer Spherical Shells - Gauss' Law
- singinglupine
- · Replies 4 ·
2 Spaceships travelling towards a blackhole.
- Kingee
- · Replies 1 ·
Understanding Joule's Law and Power: How Does It Relate to Heat and Resistance?
- I&Tstudent
- · Replies 5 ·
Circuits, what am I doing wrong
- kliker
- · Replies 2 ·
2 objects travelling in separate dimensions
- nSMITH
- · Replies 3 ·
How Does Mass, Radius, and Tension Affect Frequency in Circular Motion?
- imapeiceofwod
- · Replies 2 ·
How Should You Calculate Roller Coaster Acceleration Using Motion Diagrams?
- Glorzifen
- · Replies 1 ·
Block and Spring (Simple Harmonic Motion Problem)
- maladroit
- · Replies 3 ·
Calculating Carrier Concentration in Semiconductors Using the Hall Effect
- Master J
- · Replies 5 ·
Transverse Waves: Why Are They Known as Shear Waves?
- ronit
- · Replies 1 ·
Parallel Plate Capacitor Spacing Question
- jacksonpeeble
- · Replies 10 ·
Calculating Sound Wave Intensity and Decibels 10.0m from Source
- jamessmith
- · Replies 1 ·
Escape Velocity (from surface of the Earth)
- Tyyoung
- · Replies 2 ·
Calculating Power Transmission with Belt and Rope Drives: A Comprehensive Guide
- Brabs23
- · Replies 1 ·
How Does Nozzle Size Affect Water Speed and Pressure?
- mandi_babe1
- · Replies 2 ·
Is Impedance Directly Proportional to Frequency in an AC Circuit?
- Catkill
- · Replies 7 ·
Simple Pendulum - Maximum Speed
- mparsons06
- · Replies 3 ·
Finding ortibal period and orbital speed PLEASE HELP
- mandi_babe1
- · Replies 1 ·
Calculating the Fringe Width without the value of its Wavelength
- AJ786
- · Replies 2 ·
Solving the Twin Paradox: Age Difference Between Bill and Ben
- iaberrant
- · Replies 3 ·
Difference Between Energy, Power & Work: Explained
- imortaltoad
- · Replies 4 ·
How do you calculate finge width without the wavelength ?
- AJ786
- · Replies 1 ·
How to Calculate Watt: Understanding the Basics
- skaunejohan
- · Replies 8 ·
Atwood machine problem (speed of mases after they have moved through 1.45 m)
- a.train12
- · Replies 1 ·
Organ Pipe Harmonic Frequencies and Pipe Length Calculation
- jackleyt
- · Replies 1 ·
How Does Velocity Affect Mass in Relativity?
- iaberrant
- · Replies 2 ·
Is It Uniform Acceleration When an Object Slides Down an Inclined Plane?
- xdeanna
- · Replies 2 ·
Finding the current on each resistor
- kliker
- · Replies 3 ·
Height of Blood Transfusion - ?
- mparsons06
- · Replies 3 ·
Calculating Power Dissipation in a Parallel Circuit
- Linus Pauling
- · Replies 2 ·
Dog vs Raft relativity momentum Question (PLEASE HELP)
- jeremygogan
- · Replies 3 ·
Gravitational potential energy problem.
- Tyyoung
- · Replies 3 ·
Double Slits - Measuring Wavelength from the number of bright fringes
- Glorzifen
- · Replies 2 ·
Escape Speed for Solar System Probe
- Honore
- · Replies 6 ·
Why Isn't the String's Mass Included in Block B's Tension?
- 516aldnsdhfl
- · Replies 1 ·
Force on the bottom of a swimming pool
- confusedbyphysics
- · Replies 5 ·
Mass of an Atom and magnetics problem
- adhoward24
- · Replies 1 ·
Flow Rate Problem: Solve for Time to Pour 6L SAE 10 Oil
- mparsons06
- · Replies 14 ·