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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Einstein-de-Haas-Effect problem
- substance90
- · Replies 1 ·
Relative Motion. Wheel and axle.
- fisico
- · Replies 10 ·
Young's double slit experiment fringes
- aim1732
- · Replies 2 ·
My personal response to algebra tips
- iloveannaw
- · Replies 4 ·
Kg m/s Change in Momentum of Trolley
- dh743
- · Replies 5 ·
Calculating Max. Height of Block After Inelastic Collision
- roam
- · Replies 11 ·
Sphere rolling down an incline rotational kinetic energy
- rollorcoaster
- · Replies 5 ·
Determine the magnitude of the resultant force
- Precursor
- · Replies 6 ·
Block hanging from rubber cord with spring constant
- 123mock
- · Replies 1 ·
Bending stress + bending moment
- ar202
- · Replies 1 ·
I don't get ammeters or voltameters
- mr_coffee
- · Replies 5 ·
Why do sigma and lambda have the same quarks but different masses?
- Jack_O
- · Replies 3 ·
Static Electricity: Can Insulators be Earthed?
- lewy.
- · Replies 2 ·
Coulomb's Law Calculation: Electric Force between Electron and Potassium Nucleus
- themadhatter1
- · Replies 1 ·
Oscillations of a ruler on a cylinder
- benf.stokes
- · Replies 12 ·
How to Calculate Angular Impulse for Inelastic Collision?
- TsAmE
- · Replies 1 ·
Finding Thevenin equivalent with 4 ohm load resistor
- kliker
- · Replies 1 ·
How Do You Calculate Acceleration with Different Units of Force and Mass?
- glaveen03@yah
- · Replies 2 ·
Angular momemtum with a puck and ice cube
- TsAmE
- · Replies 2 ·
Find the period of the particle and the amplitude
- Maybe_Memorie
- · Replies 4 ·
How Does the Angle of Deviation Depend on the Angle Between Two Mirrors?
- XigmaTek
- · Replies 6 ·
Force vector without acceleration
- miraiw
- · Replies 1 ·
Calculating Work, Volume, and Energy Change for Isothermal Compression
- Paymemoney
- · Replies 14 ·
Standing waves in stringed instruments
- reverie1995
- · Replies 3 ·
How Does Changing the Length of a Metal Strip Affect Its Resonance Frequency?
- dungarh
- · Replies 1 ·
Potential of a conducting sphere with charge inside
- yarospo
- · Replies 2 ·
Problem on my Final. pulling box with rope problem
- J0hnnyD
- · Replies 6 ·
Newton's Laws, find the time it takes to reach the top of the ramp. Mechanics.
- Ebola_V1rus
- · Replies 15 ·
Critical angle when sin θc > 1 for Snell's law
- sveioen
- · Replies 3 ·
Finding resistance of (semi-)infinite resistor chain between two points.
- physicsforus
- · Replies 10 ·
Electrical Generating Plant problem
- huybinhs
- · Replies 5 ·
Speed of Ocean Waves: 900m/min?
- roam
- · Replies 1 ·
Estimating activity of a radiocative sample
- shannon.leigh
- · Replies 3 ·
Stress/strain+general bending equation
- ar202
- · Replies 3 ·
Statics Problem, tension in crane
- meaton816
- · Replies 2 ·
Calculating Net Displacement Using Vectors
- skp123
- · Replies 4 ·
Harmonic Motion: Calculating Speed in Simple Harmonic Motion
- morphonic
- · Replies 1 ·
Finding an asteroid's semi-major axis from its orbital period
- ghostbuster25
- · Replies 2 ·
Vector analysis in cylindrical coordinate system
- bharath423
- · Replies 3 ·
Race car on banked curve: finding radius and friction
- zeion
- · Replies 12 ·
Is Body Weight the Same as Mass and Constant Everywhere on Earth?
- glaveen03@yah
- · Replies 3 ·
Acceleration 1-N force to 1-kg object
- DubKing
- · Replies 10 ·
Find acceleration of masses with 1kg, 2kg, 3kg
- rokas
- · Replies 9 ·
Centripital force and acceleration
- abohn1
- · Replies 8 ·
Relative velocity of two particles on concentric circles
- thereddevils
- · Replies 4 ·
Finding EMF and current with 6 Ω bulb and 2 Ω internal resistance
- phy_freak
- · Replies 6 ·
What is the angle between the ropes in a 3-way tug of war?
- chengbin
- · Replies 1 ·
Magnitude and direction of the net force on charge -3Q and charge 4Q
- balletgirl
- · Replies 1 ·
Volleyball spike landing distance at 18° vs 8° downward angle
- Elixer
- · Replies 2 ·
At what distance will the Moon's pull exceed the Earth's?
- mlostrac
- · Replies 10 ·
What is the Pressure Calculation for a Horizontal Pipe with Vertical Tubes?
- rechitzy
- · Replies 1 ·
Conservation of momentum basics
- MCATPhys
- · Replies 1 ·
Speed of light viewed by stationary observer
- panther2041
- · Replies 1 ·
Average annual angle (Earth lattitude)
- cahill8
- · Replies 2 ·
How Is Force Calculated on a Wire in a Loudspeaker?
- stevenbhester
- · Replies 1 ·
Car collision with constant deceleration
- Alexstre
- · Replies 4 ·
Kinetic Energy vs Gravitational Potential Energy Experiment
- yeah:)
- · Replies 5 ·
Calculating Work Done by an Engine to Keep Wagon Moving
- bon
- · Replies 4 ·
Static equilibrium/tension force problem
- psneath
- · Replies 3 ·
Maximum compression of spring in two-block collision
- Meithan
- · Replies 4 ·
Work done by force F = F₀(x/x₀ - 1) from x = 0 to x = 2x₀
- DrummingAtom
- · Replies 3 ·
How Thick Should a Concrete Wall Be to Safely Shield X-Rays in a Radiology Room?
- Millano
- · Replies 1 ·
What is the relationship between the Doppler effect and the Hubble red shift?
- Planter
- · Replies 6 ·
Two crewmen pulling a raft at different angles
- lcary
- · Replies 1 ·
Solving Magnitude of Current Flowing in Neutral Conductor
- db1
- · Replies 9 ·
Solving RdQ/dt + Q/C = 0 as a first-order linear DE
- darryw
- · Replies 8 ·
Tension Problem when swinging on a vine
- lvlech
- · Replies 7 ·
Calculating Acceleration of Buoyancy Balloon Carrying 140kg
- febbie22
- · Replies 6 ·
A-level Physics - Faradays Law and Electromagnetic Induction
- I like number
- · Replies 3 ·
Finding density of air in air column from just pressure?
- mroldboy
- · Replies 2 ·
Deriving Thrust from Newton II for Rocket Motors
- bon
- · Replies 1 ·
Why is electric field strength greater than F/q₀ for a charged ball?
- sainiroop
- · Replies 2 ·
Solving the Oscillation of Mass-Spring System
- bon
- · Replies 6 ·
String wraped around the cylinder, friction?
- ldv
- · Replies 1 ·
Projectiles question: acquiring initial velocity from force+mass
- rootoftwo
- · Replies 1 ·
Understanding Magnetic Force and Weight in a Cylindrical Container
- elitewarr
- · Replies 6 ·
How Do You Calculate Tension and Static Friction in a Beam Supported by a Rope?
- bigbaddrumlad
- · Replies 7 ·
Calculating Forces in a Square Arrangement of Point Charges
- dmart1990
- · Replies 1 ·
Gravitational Acceleration to calculate radius of Jupiter
- mlostrac
- · Replies 2 ·
Calculating Average Force During Collision
- phy2ic24m3
- · Replies 1 ·
Speed of the electron after the collision
- Foshizzle387
- · Replies 2 ·
Calculating Maximum Speed and Spring Constant in Simple Harmonic Motion
- Flatshoe
- · Replies 4 ·
Minimum Angle for 100-N Ladder Against Wall
- Cornraker
- · Replies 1 ·
Student on swivel seat with spinning bicycle wheel
- hb94
- · Replies 3 ·
Why doesn't the n=3 to n=1 transition appear in the visible spectrum?
- Eleventh_Hour
- · Replies 3 ·
Relating escape velocity equations
- calfly
- · Replies 8 ·
How do the masses and pulleys affect the motion of a double Atwood machine?
- bon
- · Replies 14 ·
How to Calculate Heat Transfer Rate Through a Furnace Wall?
- ash-kennard
- · Replies 4 ·
Falling of the box in the accelerationg train
- ldv
- · Replies 1 ·
Collision of a moving proton into a proton at rest (relativity)
- Gravitino22
- · Replies 13 ·
Change in satellite's speed
- bon
- · Replies 11 ·
Relative velocity of two taxiing airplanes using vector components
- P944
- · Replies 1 ·
Astronaut in rotating space station
- bon
- · Replies 7 ·
What is the Magnitude of the Magnetic Field in a Moving Loop?
- matt72lsu
- · Replies 1 ·
Calculate Change in Momentum of 20kg Box
- puzzlebox
- · Replies 1 ·
Calculating Phase Difference and Zero Point of Two Sinusoidal Waves
- xXWraithXx
- · Replies 1 ·
Find the maximum transverse tension in a rope supporting a travelling wave
- knowlewj01
- · Replies 1 ·
How Long Does It Take for Ice to Melt in a Styrofoam Cooler?
- huybinhs
- · Replies 23 ·
How Much Force Does a 40kg Crate Exert on a 30kg Crate?
- fcb
- · Replies 3 ·
How do you calculate the resistance in a coil?
- Sirsh
- · Replies 1 ·