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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Calculating Torque: How to Find Torque with Vector r, Acceleration a, and Mass m
- nameVoid
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What is the specific gravity of the disk?
- sona1177
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Equilibrium of Two Uniform Rods over a Cylinder: Solution
- Idiot_1
- · Replies 1 ·
Deriving Equation for Water Depth After Tank Hole Poked
- gboff21
- · Replies 3 ·
Step up transformer + ac generator question
- tobz102
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Why does the sky appear blue and clouds white?
- AlchemistK
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Why does a spring balance display mass in kg instead of weight in newtons?
- Peter G.
- · Replies 6 ·
How Much Energy is Needed for a Carnot Refrigerator to Convert Water to Ice?
- ian 610
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Calculating max. speed of car over humpback bridge before it leaves the ground?
- Sleve123
- · Replies 6 ·
What is the EMF of a coil with a changing magnetic flux?
- ian 610
- · Replies 2 ·
How Much Force to Lower Two Boxes Down a Ramp at Constant Speed?
- truthlies217
- · Replies 6 ·
What is the Tension in the Ropes Connecting Blocks A, B, and C?
- kring_c14
- · Replies 24 ·
Spring force, find the speed at equilibrium
- P-Illiterate
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What Is the Phase Constant of the Wave?
- smpolisetti
- · Replies 3 ·
What are the forces on the supports of a diving board?
- UNknown 2010
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Diverting a beam of charged particles using M.F.
- zorro
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How Much Additional Mass Can a Floating Glass Hold Before Sinking?
- C-A-L
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Block on spring SHM: finding speed at given displacement
- Patdon10
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How Do You Calculate the Gravitational Force in a Hydrogen Atom?
- xArashix
- · Replies 9 ·
Calculate speed, given radius and angle.
- Ienjoytrig...
- · Replies 1 ·
Calculating % Error in Magnetic Field
- qswdefrg
- · Replies 1 ·
Change in entropy for adiabatic compression
- Bugsy23
- · Replies 1 ·
Build a Roller Coaster: Tips for 2 Loops & 2 Hills
- Chem4Life
- · Replies 2 ·
This should be an easy one units in Pressure formula
- trunksbomb
- · Replies 1 ·
Constant-volume gas thermometer calibration and absolute zero
- AHinkle
- · Replies 1 ·
How Far Is Halley's Comet from the Sun?
- xArashix
- · Replies 1 ·
Solving Simple Harmonic Motion: Cart Position and Time Comparison
- asz304
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Resistor Shorting and Kirchhoff's Rule Explanation
- member 217843
- · Replies 1 ·
Finding the Acceleration of a Pivoted Rod Released from a Horizontal Position
- Macroer
- · Replies 2 ·
Finding rafts velocity relative to the water using 2 masses and one velocity
- darktrini123
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Ideal gas law and a bicycle pump
- LizzleBizzle
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Location of Solar System object
- jbaratta
- · Replies 14 ·
How to Easily Calculate Frequency?
- smpolisetti
- · Replies 1 ·
Calculating harmonics of a copper wire
- gboff21
- · Replies 1 ·
Moment of inertia and rotational kinetic energy prob
- pb23me
- · Replies 2 ·
Throwing ball out of a moving car
- cashmoney805
- · Replies 10 ·
Merry go round, rotational dynamics
- pb23me
- · Replies 6 ·
Conservation of energy and fricion
- haha01hah
- · Replies 1 ·
Calorimeter Physics Problem: Steam Condensation for Temperature Increase
- smray7
- · Replies 1 ·
How long time until it hits the ground
- anthroxy
- · Replies 1 ·
Radius of Curvature in a simply supported beam
- spggodd
- · Replies 7 ·
Does an Object's Thermal Energy Decrease as Its Temperature Drops?
- mogibb1
- · Replies 1 ·
Understanding Acceleration and Friction in a Block Over Block System
- vissh
- · Replies 5 ·
Coefficient of sliding friction and distance travelled
- Bugsy23
- · Replies 1 ·
At what distance must a flea jump to clear a log with least effort?
- tempneff
- · Replies 24 ·
Michelson and Morley Aether Experiment
- midgetwars
- · Replies 5 ·
Velocity after collision (elasticity)
- DrMcDreamy
- · Replies 15 ·
Total energy supplied to a flyball governor
- Bugsy23
- · Replies 1 ·
Magnetic Field of a Straight Current-Carrying Wire
- hx35
- · Replies 8 ·
Show entropy density, Gibbs function, and heat capacities for photon gas
- bon
- · Replies 6 ·
Relationship between voltage and distance between light bulb and solar cell
- Nash4Lyf
- · Replies 4 ·
I dont understand some part of work energy theorem
- madah12
- · Replies 3 ·
Finding Density using STP and Molar Mass
- dredre
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What Is the Rotational Angular Momentum of a Barbell System?
- ohheytai
- · Replies 13 ·
1-D Inelastic Block Collision and Spring Compression w/photo
- Yamahonda450
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Small Conceptual Relativistic Energy Question
- mmmboh
- · Replies 1 ·
Gravitational Potential Energy of a System
- blackheart
- · Replies 1 ·
Calculating Frequency of Electron Orbit in Hydrogen Atom
- donut166
- · Replies 1 ·
Work and Energy involving velocity
- AfroQueen
- · Replies 4 ·
Two identical sticky masses colliding at angle φ
- Runaway
- · Replies 1 ·
Torque on a disk unwinding from a string
- ohheytai
- · Replies 9 ·
Internal resistance of a battery
- AvoHead
- · Replies 1 ·
Buoyancy problem: Deriving an equation for volume of a floating object
- Hairy Biped
- · Replies 3 ·
Gravitational field at the fourth corner of a square
- blackheart
- · Replies 1 ·
Finding Distance: Solve for Height from 1.77s Drop Time
- mmaggiee
- · Replies 1 ·
Problem involving angular momentum
- issacnewton
- · Replies 2 ·
Significant Figures in Average Velocity Calculation
- michaelplease
- · Replies 1 ·
Question Regarding Thermal Energy
- dismalice
- · Replies 8 ·
Rank the following waves in order
- sona1177
- · Replies 7 ·
Centripetal Force Lab Data Analysis
- rahrah094
- · Replies 1 ·
Deriving charge equation for repelling pith balls
- rad5brandon
- · Replies 1 ·
Energy Problem Involving KE and PE
- jcfor3ver
- · Replies 1 ·
Theory type Question of Static Equilibrium
- AVQueen87
- · Replies 2 ·
How do I solve this difficult book problem?
- thatoneguy123
- · Replies 1 ·
What should I write in a theory review for my investigation?
- SugerQueen
- · Replies 1 ·
Estimate Melting Point of Lead at 100 atm
- bon
- · Replies 6 ·
Double Slit Quantum and Electricity Experiment
- harrietstowe
- · Replies 1 ·
What is the border line that constitutes v c
- chris_0101
- · Replies 1 ·
Simple Harmonic Motion (Mass on a Spring)
- seichan
- · Replies 3 ·
Is Work Done by the Sun in a Circular Earth Orbit?
- Saraharris38
- · Replies 1 ·
Clausius Clapeyron Equation of lead
- bon
- · Replies 1 ·
Oscillation Frequency and Spring Constant
- katdesutter
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What Force Does a Concrete Support Exert at One End of a Bridge?
- Hypnos_16
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Half life of a radio active element
- logearav
- · Replies 2 ·
Ft = 0.202"Calculating Forces on a Lunch Tray: Thumb and Finger Forces
- Hypnos_16
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Kepler's 3rd Law, circular orbit, 2 planets
- zwingtip
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Destructive interference, two speakers
- skyline_2k7
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Degrees of Freedom for a Triatomic Molecule
- vineroon
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Applications of Fourier series and Fourier transforms
- paul-martin
- · Replies 8 ·
Buoyancy and Weight of the Fluid Displaced
- theeringirl
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What is the Mass of Oxygen in a Leaking Tank?
- CJIME017
- · Replies 2 ·
Slipping before rolling (Rotation)
- weesiang_loke
- · Replies 3 ·
Falling thin rod and angular speed
- wondermoose
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How much work is required to reduce the radius of the circle from r0 to r0/2?
- Mmm_Pasta
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So you'd use the top loop and the right-hand loop.
- Princess19
- · Replies 7 ·
Having a hard time grasping the concept with momentum
- TeaWay
- · Replies 7 ·
Deriving the wave equation for light from Maxwell's equations
- Schr0d1ng3r
- · Replies 4 ·
Calculating Required Force for Pushing a Block on an Inclined Ramp
- jolee'11
- · Replies 2 ·
At what rate does it emit energy by radiation?
- acg7160
- · Replies 5 ·
How Does Ampere's Law Calculate Current in a Uniform Magnetic Field?
- ineedhelp5454
- · Replies 4 ·