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 Does Heating a Flask Change Its Weight?
- qrt388
- · Replies 1 ·
Can parts of an isolated system at rest start moving?
- clarkandlarry
- · Replies 7 ·
Finding planet density from satellite orbital period
- Reverie29
- · Replies 6 ·
Block move down the curved hill and hit attached block spring
- cecico
- · Replies 5 ·
Find Coefficient of Friction on Slope w/ 3kg Mass Moving at 17 m/s
- candycooke
- · Replies 2 ·
Newton's Second Law for Rotation
- frig0018
- · Replies 6 ·
Electron escape velocity from tritium nucleus in beta decay
- Metalsonic75
- · Replies 2 ·
Student on frictionless pond throws two books
- clarkandlarry
- · Replies 4 ·
Percent change in the Moon's gravitational pull at different positions
- KMjuniormint5
- · Replies 11 ·
Answer Force Constant & Work Done in a Spring
- warmfire540
- · Replies 3 ·
Work and coefficient of friction
- dranseth
- · Replies 12 ·
Finding the equivalent resistance of this circuit?
- oomba
- · Replies 1 ·
How Do You Calculate Parameters and Analyze a Leaky Capacitor Circuit?
- dpd069
- · Replies 1 ·
H2S gas expanding isobarically then adiabatically to initial temperature
- gmarc
- · Replies 5 ·
What Is the Spring Constant and Angular Frequency of a Block-Spring System?
- pezola
- · Replies 1 ·
Simple Harmonic Motion: Calculating Speeds of Blocks with a Compressed Spring
- pezola
- · Replies 1 ·
Joule Heating, Calculating Filament Resistance
- reaxn
- · Replies 4 ·
How can you calculate nonequilibrium torque and its effects on an extended body?
- MAins
- · Replies 1 ·
What Is the Velocity of Particles After Decay?
- wowolala
- · Replies 1 ·
Force on tension bolts when Sally stands on a diving board
- rudeted
- · Replies 1 ·
Electric iron temperature after 2 minutes and charged water drop radius
- andreguerra
- · Replies 1 ·
Circular Motion: Particle on a String
- rock.freak667
- · Replies 4 ·
Constructive Interference Problem with 2 Speakers
- infamous24
- · Replies 1 ·
Projectile Motion with Air Resistance problem
- ahadpoolghaha
- · Replies 3 ·
Are the 10 ohm and 20 ohm resistors in this circuit truly parallel?
- breez
- · Replies 3 ·
Solving Earth's Radiation Problem - 342 W/m2
- s4116792
- · Replies 2 ·
Ball on two strings in horizontal circle - minimum speed
- warmfire540
- · Replies 3 ·
Magnetic field inside a 3.0 cm solenoid with 500 turns
- Strawberry
- · Replies 1 ·
Solve Rotational Momentum Problem: 3.0kg Hoop, 5.6 rad/s, 18° Ramp
- Zokudu
- · Replies 4 ·
Reading an Acceleration Vs. Time Graph
- Yuma
- · Replies 4 ·
Interaction of a Current Loop with a Magnetic Field
- HELLO11
- · Replies 2 ·
Light Intensity: Calculating Energy Flux through an Area Element
- davidphysics
- · Replies 2 ·
Force of Impact: Will Plate Move?
- Newtons-law
- · Replies 4 ·
Which car was going faster before the collision? Solving for momentum in 2D
- Stevo191
- · Replies 3 ·
How Many Photoelectrons Are Ejected Per Second in This Experiment?
- elephantorz
- · Replies 1 ·
Calculating Center of Gravity and Force for a Flagstaff
- Newton86
- · Replies 42 ·
How Do You Calculate Moment of Inertia for Complex Shapes?
- nikkou
- · Replies 5 ·
How to solve a Sum of Forces Problem with Two Springs and Varied Masses?
- simplemail1
- · Replies 4 ·
Fish in a spherical bowl refraction problem
- jcpwn2004
- · Replies 5 ·
Converting from degK/s to degC/s?
- seichan
- · Replies 6 ·
Which Focal Length is Longer for Different Light Colors?
- jcpwn2004
- · Replies 2 ·
Adjusting Camera Lens for Sharp Image: 72.0mm Focal Length at 1.90m Distance
- IVIiChAeL
- · Replies 1 ·
Calculating Surface Area by Rotating a Curve - How to Find the Surface Area?
- Tranquility13
- · Replies 4 ·
Is this black scratchy Australian material a metal or non-metal?
- millys
- · Replies 2 ·
Electromagnetic wave equations
- drdizzard
- · Replies 7 ·
Flywheel Angular Velocity Problem
- cchase88
- · Replies 4 ·
How does E=mc² calculation give energy in joules?
- daNAV1GATOR
- · Replies 5 ·
Gravity in orbit, on other planets, and how to measure mass in space
- LiqurC
- · Replies 1 ·
Why does closing the switch cause the voltage across the thermistor to decrease?
- nokia8650
- · Replies 3 ·
Find max. speed with Static Friction
- iLove
- · Replies 3 ·
Electric Field due to a charged conducting finite cylindrical shell.
- ed2288
- · Replies 2 ·
Electric potential of four charges
- Metalsonic75
- · Replies 2 ·
Calculating Work for Displacement of Floating Cylinder
- bcjochim07
- · Replies 9 ·
Calculating Minimum Velocity for Salmon to Jump 1.9m Waterfall
- Tiplerfan
- · Replies 15 ·
Resistance problem- combination circuit
- adv
- · Replies 4 ·
Mass and center of mass for a rod with variable linear density
- chocolatelover
- · Replies 1 ·
Heat contained in the Great Lakes
- princesspriya
- · Replies 1 ·
Cost of Rest Energy of 1.0 Kg at $0.60/kWh
- jackster18
- · Replies 2 ·
Thermodynamics- How much Ice is melted?
- seichan
- · Replies 1 ·
Maximum distance a cleaner can climb a leaning ladder before it slips
- Lma12684
- · Replies 13 ·
Friction at an angle verification
- warmfire540
- · Replies 1 ·
Velocity of a man jumping from a 90m building
- YesINeedhelp
- · Replies 1 ·
Work done by gravity and air resistance on a falling raindrop
- chocolatelover
- · Replies 7 ·
How Is the Average Force Calculated When a Steel Ball Hits a Wall?
- chocolatelover
- · Replies 7 ·
Work to push a floating cylinder 10 cm deeper in water
- bcjochim07
- · Replies 2 ·
How Do Bumper Cars Illustrate Basic Physics Concepts?
- ebob546
- · Replies 4 ·
How Does a 30-Degree Tilted Mirror Affect Viewing a Full Body Image?
- blumfeld0
- · Replies 1 ·
Calculating coefficient of kinetic friction
- emicolas
- · Replies 2 ·
Thermal Expansion of Rod Problem
- MasterYoda100
- · Replies 1 ·
Collision rate of nitrogen molecules on a wall
- houseguest
- · Replies 2 ·
How to Calculate Cylinder Mass Using Rotational Dynamics and Mechanical Energy?
- PhysicsDud
- · Replies 9 ·
How High Must a 400 lb Mass Be Dropped to Achieve a 3.5g Impact?
- starr_logic
- · Replies 1 ·
How Is Stopping Distance Related to Speed in Physics?
- robandrew06
- · Replies 5 ·
Magnetic fields and wire current
- xeannart
- · Replies 7 ·
How Much Force to Hold a Fire Hose Delivering Water at High Speed?
- aishjay
- · Replies 1 ·
Finding Paul's speed after being pulled 2.60 m on a mat with friction
- vtx7
- · Replies 1 ·
Constant velocity moments problem
- Ry122
- · Replies 1 ·
Thermodynamics and potential energy
- kkaplanoz
- · Replies 2 ·
Radioactivity - Why no reading on Geiger counter?
- daNAV1GATOR
- · Replies 22 ·
How do diffraction patterns change with laser and filtered light?
- planesinspace
- · Replies 2 ·
Perfectly Elastic Collision Problem
- jonnejon
- · Replies 15 ·
Finding branch currents using ladder method with equivalent circuit
- Saladsamurai
- · Replies 3 ·
Can Follow-Through Increase Golf Ball Distance?
- clarkandlarry
- · Replies 3 ·
A battery, two capacitors, and a switch
- *best&sweetest*
- · Replies 4 ·
Understanding Polarized Light Through Polaroid Sheets
- planesinspace
- · Replies 6 ·
How Does Newton's Law Apply to Multiple Gravitational Forces?
- fredrick08
- · Replies 27 ·
How do I calculate the deflection angle in a bowling split conversion?
- Return
- · Replies 3 ·
Work to Bring Object up Mineshaft to Earth Surface
- sean80439
- · Replies 4 ·
Energy released in the triple-alpha process
- WPCareyDevil
- · Replies 3 ·
Superposition Equation solution
- asechman
- · Replies 1 ·
Work done by net force when velocity doubles
- clarkandlarry
- · Replies 1 ·
Current through R3 and voltage across R2 in mixed circuit
- Bensky
- · Replies 12 ·
Sound Waves and Destructive Interference question
- BrooklynBees
- · Replies 1 ·
Harmonic Motion of Pendulum on Mars
- rzermatt
- · Replies 9 ·
Force exerted by fluid on cylinder end A
- bcjochim07
- · Replies 12 ·
What is the Number Density of Gas Molecules at Sea Level?
- bcjochim07
- · Replies 2 ·
Why do soap bubbles show red near the bottom instead of blue?
- salsabel
- · Replies 1 ·
Potential of a metal sphere with changing radius
- purple88hayes
- · Replies 5 ·
Car engine power, resistance force, and maximum speed on a hill
- farso
- · Replies 13 ·
AP Physics B Test Packet Assistance
- Hip Hypocrite
- · Replies 5 ·