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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Calculate the airplane's acceleration
- ConfusedMonkey
- · Replies 4 ·
Wheatstone bridge voltages with 12V and three resistors
- control
- · Replies 10 ·
Dimensional analysis of dipole-dipole energy transfer probability equation
- HAYAO
- · Replies 7 ·
Finding the Angle When the Crate Begins to Slip
- Graydon Hope
- · Replies 6 ·
Archived Relative Motion in Two Dimensions
- vladittude0583
- · Replies 3 ·
Speed at Takeoff and Average Acceleration
- Olivia Tarca
- · Replies 8 ·
Problem involving thermal radiation and specific heat
- Wimpalot
- · Replies 11 ·
Percentage transmittance gamma ray through lead
- Adam Rabe
- · Replies 2 ·
2-body scattering and Mandelstam Variables
- Pizza Pasta physics
- · Replies 1 ·
Friction between cart and a surface covered with a liquid?
- Phys112
- · Replies 6 ·
Angular Velocity of a wheel problem
- Kallum
- · Replies 4 ·
Tone hearing frequency concept question
- Adam Rabe
- · Replies 15 ·
Thickness of a cylinder in a compound thin cylinder
- DevonZA
- · Replies 39 ·
What is with this projectile simulation?
- sohjau
- · Replies 1 ·
Moseley's law and the determination of the screening constant
- Arne H
- · Replies 3 ·
How to calculate wavelength electron given speed
- Adam Rabe
- · Replies 2 ·
Pulley System on a Big Block: Solving for Acceleration with Zero Applied Force
- Buffu
- · Replies 5 ·
Electric potential of charged concentric spheres
- FranzDiCoccio
- · Replies 3 ·
How Can I Calculate the Angular Speed of a Ring Rolling Without Slipping?
- Vibhor
- · Replies 31 ·
Tension in a rope hanging between two trees
- Buffu
- · Replies 7 ·
Elastic collision between falling ball M and stationary ball m
- Deadawake
- · Replies 16 ·
How to Calculate the Correct Fraction of Monatomic Molecules in a Gas Mixture?
- Jahromi24
- · Replies 8 ·
Falling Cantaloupe - Distance Above Ground
- Catchingupquickly
- · Replies 2 ·
Finding charge given the electric field at origin is zero
- paulie
- · Replies 1 ·
What direction does a compass point to in a magnetic field?
- Notaphysicsmajor
- · Replies 5 ·
How to Calculate Energy in EM Waves?
- Arman777
- · Replies 4 ·
Vertical and horizontal components,physics As level help :(
- Maryam9
- · Replies 5 ·
RLC circuit with initial conditions at t=0
- Arman777
- · Replies 36 ·
Trebuchet energy conservation equation for angular velocity
- timetraveller123
- · Replies 26 ·
Why does the horizontal distance L contract in the Michelson-Morley experiment?
- Karol
- · Replies 3 ·
Inclined plane in a circular motion
- Mogdan
- · Replies 17 ·
Flute player initial frequency?
- Wimpalot
- · Replies 7 ·
RC Circuit defibrillator Question
- tmlfan_17
- · Replies 2 ·
The sensitivity of the galvanometer
- Asmaa Mohammad
- · Replies 3 ·
Can a 2MeV photon produce a proton-antiproton pair?
- 125.6
- · Replies 3 ·
Electric currents and Magnetic fields
- SDTK
- · Replies 2 ·
Laser Physics - Diameter of a Spot on the Moon from a Laser
- ChrisJ
- · Replies 6 ·
Solving a Friction-Constrained Motion Problem
- Buffu
- · Replies 7 ·
Spinning block with decreasing radius
- Buffu
- · Replies 11 ·
Max values of current and charge using differential equations
- Arman777
- · Replies 13 ·
Minimum Kinetic energy of the hydrogen atom
- Rahulrj
- · Replies 22 ·
Field strength to deflect electron in a cathode-ray tube
- David23454
- · Replies 16 ·
How Long for a Block in SHM to Hit a Wall After Spring Snaps?
- Physicist1234
- · Replies 6 ·
When does a pebble placed on a rolling wheel start to slide?
- Buffu
- · Replies 5 ·
Sound Waves in Different Mediums
- Joseph Phan
- · Replies 3 ·
Why Does Changing Force Direction Affect Acceleration Calculations on a Wedge?
- Buffu
- · Replies 11 ·
Object splitting at half height: momentum conservation with negative velocity
- Deadawake
- · Replies 5 ·
Estimating Electromagnetic Radiation from a Cellular Phone
- JordanD
- · Replies 1 ·
Phase difference and Standing waves vs Progressive waves
- Lamar Ngolo
- · Replies 5 ·
Train whistle Doppler effect with approach and recession frequencies
- chem31sa6
- · Replies 6 ·
What is the estimated path length traveled by a deuteron in a cyclotron?
- gmark
- · Replies 4 ·
The voltage across an AC source and a resistance in series
- Asmaa Mohammad
- · Replies 4 ·
Why Is It Sin Theta Instead of Cos Theta in Magnetic Flux Calculation?
- watthappening
- · Replies 8 ·
Calculating the Wavelength of Monochromatic Radiation in Compton Scattering
- Pouyan
- · Replies 1 ·
Question regarding a magnetic field path around a gapped core
- doktorwho
- · Replies 8 ·
Two blocks on string with 30-60-90 triangle at constant speed
- SqueeSpleen
- · Replies 3 ·
Points on an elliptical orbit where V(radia) is zero.
- Ali Baig
- · Replies 2 ·
Pressure drops in hydraulic dampers
- Tommtb
- · Replies 5 ·
Relation between Levi-civita and Kronecker- delta symbol
- Pushoam
- · Replies 2 ·
Thermal Expansion: Volume vs. Linear - 0.11L Spilled
- Alex126
- · Replies 2 ·
Magnitude of Force Exerted on Middle Block in a Three-Block System
- ConfusedMonkey
- · Replies 14 ·
Finding distance traveled by rebound when measured for surface
- Ithilrandir
- · Replies 13 ·
Pair Production Velocity Calculation
- ikihi
- · Replies 5 ·
Findings need confirmation about change of weight
- Crowxe
- · Replies 30 ·
Resistance of rice cooker's heating element?
- Dinie
- · Replies 10 ·
Time for water to equalize between two cylinders with connecting hole
- Tellerath
- · Replies 1 ·
Variation of EM radiation with frequency
- Pushoam
- · Replies 2 ·
Effect of 2% radius decrease on Earth's surface gravity and rotational kinetic energy
- baldbrain
- · Replies 15 ·
Generalized Galilean transformation
- Pushoam
- · Replies 4 ·
Minimum mirror height for a person to see full reflection
- Const@ntine
- · Replies 26 ·
Two students on sled passing 2 kg object on frictionless ice
- Yoonique
- · Replies 14 ·
What are the Best Demonstration Ideas for Archimedes' Principle?
- Necm
- · Replies 1 ·
Acceleration associated with the Earth’s spin
- Pushoam
- · Replies 8 ·
Calculating total resistance of a combination circuit
- Ketchup4684
- · Replies 19 ·
Circuit Problem -- Combining 4 resistors to make 95 Ohms
- a1234
- · Replies 10 ·
A hydrogen atom transitions from n= 5 state to the ground state
- ikihi
- · Replies 3 ·
Interesting physics topic for a presentation
- Bunny-chan
- · Replies 5 ·
How Does a Diffraction Grating Resolve Different Wavelengths of Sodium Light?
- Eagertolearnphysics
- · Replies 10 ·
Understanding Pressure Drop and Damping Force Calculation in Shock Absorbers
- Tommtb
- · Replies 3 ·
Archived Derive the general solution for current in a lossless transmission line
- biker.josh07
- · Replies 2 ·
What is the work function of the photoelectric material?
- ikihi
- · Replies 3 ·
Raft buoyancy with man and elephant loading
- TheStudent77888
- · Replies 3 ·
How to distribute the charge between two spheres to minimize the potential?
- Buffu
- · Replies 24 ·
What is the energy of the alpha particle and recoiling nucleus?
- says
- · Replies 9 ·
Intensity after Laser Round Trip
- cake-jake1
- · Replies 2 ·
Direction of normal force exerted on object B
- Faiq
- · Replies 8 ·
Freewheeling bicycle and friction
- Worthatry
- · Replies 6 ·
How high can a high jumper clear on the moon compared to on Earth?
- Jimmy87
- · Replies 4 ·
Equivalent capacitance of a system of 2 spheres
- randomgamernerd
- · Replies 3 ·
Which light turned on first and how much later did the second one turn on?
- ChrisJ
- · Replies 1 ·
Thin film constructive interference
- ikihi
- · Replies 3 ·
Time to Max Compression of a Spring
- kq6up
- · Replies 2 ·
Tip current in STM (fractional error problem)
- Ziggy12
- · Replies 4 ·
Expression for the instantaneous angular velocity
- Rahulrj
- · Replies 10 ·
Change of internal energy of an ideal gas
- DevonZA
- · Replies 5 ·
Ice cube melting in warm water temperature change
- zanyzoya
- · Replies 7 ·
Uncertainty of the function? My answer is a bit different
- giantf
- · Replies 1 ·
Calculating Momentum in an Observer's Frame of Reference
- Curtis Cleary
- · Replies 1 ·
Current division in a series-parallel circuit
- Ketchup4684
- · Replies 2 ·
Why Is Magnetic Flux Calculated Using the Solenoid's Area Instead of the Loop's?
- pbj_sweg
- · Replies 3 ·