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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Tricky Problem (at least for me)
- need help
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Understand Kirchhoff's Rules: Solving Circuit Confusion
- sap_54
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Why did Millikan use terminal velocity in his oil experiment?
- al_201314
- · Replies 2 ·
Height of bullet at top of trajectory
- calnpals
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Finding the problem with a torque equation
- Alt+F4
- · Replies 112 ·
Bullet trajectory when fired at an angle.
- flyb0y
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What is the maximum height the pinball reaches on the inclined surface?
- whoknows123
- · Replies 26 ·
Invariance of length in classical mechanics?
- loom91
- · Replies 8 ·
Thermodynamics - Whcih isotherm has higher temperature?
- Amith2006
- · Replies 3 ·
Calculating Muzzle Velocity for Projectile Motion Cannon - 47 meters Fired
- NIZBIT
- · Replies 7 ·
Rotating on a small platform attached by massless rods to a pivot
- FlipStyle1308
- · Replies 48 ·
Force on swimming pool bottom and short sides from water pressure
- whereisccguys
- · Replies 1 ·
Overall entropy change when metal at 80°C is mixed with water at 72°C
- jg95ae
- · Replies 9 ·
Calculating Heat Exhaust from a Heat Engine
- flower76
- · Replies 3 ·
Astrophysics distribution question
- lando45
- · Replies 4 ·
Dropping a tennis ball through the earth
- Milind_shyani
- · Replies 7 ·
Elementary Question on Relative Density
- John O' Meara
- · Replies 1 ·
Current induction into an antenna?
- Jay_Gridley
- · Replies 1 ·
What factors affect how a gas thermometer works?
- danago
- · Replies 2 ·
Magnetism and perpendicular wires.
- jenx44
- · Replies 1 ·
Solve the Volume of 4.5kg Water at N.T.P with Zero Intermolecular Forces
- Amith2006
- · Replies 1 ·
G-Force of Dropping a Stone and Football from 1.5m
- disregardthat
- · Replies 4 ·
Calculating Oxygen Usage from Ideal Gas Characteristics
- N_L_
- · Replies 7 ·
Deriving the 4d continuity equation
- Thrice
- · Replies 5 ·
Why does discrete millisecond integration give 50 m instead of 55 m?
- Poposhka
- · Replies 15 ·
Force on a circular window at 10650 m depth in the Mariana Trench
- whoknows123
- · Replies 7 ·
Wave optics interference and diffraction
- tink123
- · Replies 5 ·
Dryness fraction - is anything missing here ?
- rmenon
- · Replies 3 ·
When will two walkers be in step again at 54 and 26 strides per minute?
- cmcco004
- · Replies 12 ·
F=ma proof and understanding force
- chandran
- · Replies 5 ·
Can a String Be Perfectly Horizontal in a Centripetal Acceleration Experiment?
- colombo
- · Replies 9 ·
Electric Force, Equilibrium Config of Charges
- Swagger
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Calculating rotational inertia of car wheels and tires
- abawp
- · Replies 3 ·
Equilibrium: Electrostatic force and Gravitational force
- Swagger
- · Replies 1 ·
Calculating % of X-rays Penetrating Lead with Al Attenuation Coefficient
- MrKoffee
- · Replies 2 ·
Kinematics with an elevator that has 2 acceleration constants
- VinnyCee
- · Replies 10 ·
How Does Trebuchet Arm Design Affect Moment of Inertia?
- airforce840
- · Replies 2 ·
What is the correct solution for a nucleus with a diameter of 8x10^(-15)m?
- prolong199
- · Replies 8 ·
Questions regarding magnetism indiction
- science kid
- · Replies 1 ·
When Does a Pendulum Reach Its Maximum Speed?
- spoonthrower
- · Replies 1 ·
Reducing absenteeism at Cow Industrials Ltd
- soph.
- · Replies 1 ·
Checking answers on 7 multiple choice physics questions
- thunder
- · Replies 4 ·
Light diffraction pattern from a 65 μm spider web with 650 nm laser
- nophun6
- · Replies 1 ·
Calculating Average Electrical Energy Dissipated in Copper Wire Loop
- spoonthrower
- · Replies 5 ·
Finding speed with time-dependent force F(t)=(120 N/s)t+4000N
- positive infinity
- · Replies 2 ·
Can Acoustic Resonance Be Produced with a Wavelength of 20cm and 32 cm Tube?
- Alain12345
- · Replies 1 ·
How Do You Calculate R1 and R2 for Temperature-Independent Resistance?
- frozen7
- · Replies 2 ·
Entropy change in a thermodynamic process
- justinbaker
- · Replies 1 ·
Why Does Larger Object Impact Sample Deformation More Than Smaller Tip?
- michiko
- · Replies 9 ·
Determining binding energy from latent heat of vaporization
- dav2008
- · Replies 1 ·
Thermal equilibrium of aluminum in water with different specific heats
- superdave
- · Replies 2 ·
Wheatstone Bridges: Which Has Greater Static Sensitivity?
- tandoorichicken
- · Replies 1 ·
How Do You Model Building Sway with Trigonometric Functions?
- runicle
- · Replies 4 ·
Projectile distance from nozzles on a rotating disk
- elmariachi
- · Replies 2 ·
Point Particle in Magnetic Field
- littleHilbert
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Wave interference and resolving resultants
- kel
- · Replies 9 ·
The Role of Gravity in Star and Planet Formation
- qplazmgg
- · Replies 2 ·
How long does it take for air molecules to collide at STP?
- flower76
- · Replies 13 ·
What Was the Original Mass of the Ice Block?
- jg95ae
- · Replies 24 ·
Magnetic field at center of a 90° circular arc bend
- frozen7
- · Replies 3 ·
Magnetic Field and Loop 2: Direction and Induced Current
- frozen7
- · Replies 1 ·
Help with exam questions on thermal expansion, reference frames, and fluid dynamics
- sparsh
- · Replies 14 ·
How do I correctly calculate linear speed in a tilted pinball machine problem?
- FlipStyle1308
- · Replies 8 ·
Does Voltage Change When Resistance Drops in a Series Circuit?
- evrox
- · Replies 2 ·
Nuclear Physics-nucleus diameter
- prolong199
- · Replies 4 ·
Currents through R_1 and R_2 when capacitor switches to parallel connection
- mooshasta
- · Replies 1 ·
The sums of forces along x and y
- Malitic
- · Replies 2 ·
Faraday's Law of Electromagnetic Induction
- spoonthrower
- · Replies 2 ·
A half-life question, involving 2 elements
- raul_l
- · Replies 15 ·
How Do You Calculate the Frequency of a Wave Traveling Along a String?
- kel
- · Replies 11 ·
Find the distance between the two third order maxima
- Spruance
- · Replies 16 ·
Finding spring stiffness and unstretched length of bungee cord
- chazgurl4life
- · Replies 7 ·
One question regarding magnetism/electricity
- shanktank
- · Replies 1 ·
Circuit with 4 lamps, 2 bright and 2 dim, controlled switch
- zanyzebra
- · Replies 1 ·
How Does Gravity Influence Star Equilibrium and Planet Formation?
- qplazmgg
- · Replies 2 ·
How Much Mass to Hang for Different Standing Wave Loops?
- chazgurl4life
- · Replies 5 ·
Series RLC filter (trap filter)
- Lisa...
- · Replies 7 ·
What is the half-life for spontaneous fission of various nuclei?
- levi
- · Replies 2 ·
Can I add electric fields from separate charges using superposition?
- Brewer
- · Replies 3 ·
Calculating Water Pressure: A Puzzle to Solve
- Idea04
- · Replies 3 ·
Finding energy and power of a 1000 Hz sound wave on the tympanum
- Werg22
- · Replies 1 ·
Constant liquid pressure device
- justrezza
- · Replies 3 ·
Airspeed and wind speed from Pittsburgh-Phoenix flight times
- Hollysmoke
- · Replies 1 ·
Simple physics analogy question (circuits)
- dnt
- · Replies 1 ·
Damped harmonic motion sinusoid equation
- biles1234
- · Replies 1 ·
How to Find Electric Circuit Parameters?
- liucibegemoc
- · Replies 12 ·
Solving the Light/Wave Problem: Coyote's Search for a Nodal Point
- Byrne
- · Replies 2 ·
Calculating Intensity at a Point in a Diffraction Pattern
- prolong199
- · Replies 7 ·
Deriving Magnetic Field of Two Parallel Wires on the X-Axis
- ovoleg
- · Replies 9 ·
Electric Potential Energy Question
- leaf345
- · Replies 2 ·
Solving an AP Spring Problem: Get Answer in 16 cm
- WrathofHan
- · Replies 5 ·
Accoustics Problem 1 - Resonance and Speed of Sound
- Werg22
- · Replies 1 ·
Just one little question on the frequency band of the series RLC filter
- Lisa...
- · Replies 1 ·
Viewing you full length in a mirror
- user1252452035
- · Replies 1 ·
Min voltage rating of capacitor
- copresh1
- · Replies 1 ·
What is the initial speed v0 of the ball?
- Spruance
- · Replies 10 ·
How Do Acceleration-Time Graphs Explain Motion?
- Spruance
- · Replies 4 ·
How Do Electron Energy Levels in Mercury Atoms Produce Line Spectra?
- Spruance
- · Replies 16 ·
Would like to know a few basic things ^^
- crays
- · Replies 1 ·