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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Electric forces and electric fields
- sportsrules
- · Replies 2 ·
Quick chem. questionacids/bases
- laker_gurl3
- · Replies 4 ·
De Broglie Wavelength and Relativistic Momentum
- Jacob87411
- · Replies 3 ·
Finding the molecular volume fraction of an ideal gas
- dg_5021
- · Replies 4 ·
How Do You Solve Thermal Expansion Equations Under Time Pressure?
- Jayhawk1
- · Replies 5 ·
Finding the matrix of a linear transformation from ℝ³ to ℝ²
- Mathman23
- · Replies 5 ·
Ammeter readings and power in a multi-cell circuit
- Clari
- · Replies 3 ·
Taylor Series for Showing B_{x}(x+dx)-B_{x}(x) Approximation
- retupmoc
- · Replies 3 ·
Temperature Required for Brass Plug and Iron Ring to Fit
- Jayhawk1
- · Replies 2 ·
What is the relationship between Newton's 3rd law and friction?
- al_201314
- · Replies 6 ·
Motion in a Circle: Find Slowest Speed for Roller Coaster
- fern
- · Replies 4 ·
OSMOSIS what do you expect to happen
- dagg3r
- · Replies 1 ·
Checking a chem. questions answer
- laker_gurl3
- · Replies 2 ·
Checking optics worksheet answers on wavelength, refraction, and illuminance
- indiansfan4life
- · Replies 8 ·
Calculating Equilibrium Temperature in a Water Mixture
- Tokimasa
- · Replies 13 ·
Finding y'' for x^4+y^4=1 by implicit differentiation
- gillgill
- · Replies 6 ·
Unit vector perpendicular to two vectors and vector parallel to line of intersection
- ~angel~
- · Replies 9 ·
What is the change in density if the water is heated to 85oC?
- Jayhawk1
- · Replies 2 ·
How Do Permutations and Conjugacy Classes Operate in Symmetric Groups?
- Oxymoron
- · Replies 5 ·
Solving Rotation Problems: Finding Theta and Number of Revolutions
- cde42003
- · Replies 4 ·
Current in a circuit with 5V emf, 5Ω resistor and 20F capacitor
- swechan02
- · Replies 3 ·
Acceleration and velocity question
- bango
- · Replies 4 ·
Stuck on a Related Rates Triangle Problem
- scorpa
- · Replies 2 ·
Wheel on a game show force problem
- med9546
- · Replies 2 ·
Why does momentum conserve during collision with springs on block B?
- peeks
- · Replies 12 ·
Refraction-Faster then a vacuum
- SwAnK
- · Replies 2 ·
Conservation of Momentum problem needs quick reply
- Byrne
- · Replies 7 ·
What Are the Applications of Trigonometry in Calculus?
- erik05
- · Replies 10 ·
What Is the Correct Sum of the Series \( \sum_{n=1}^\infty \frac{8^n}{9^n} \)?
- ILoveBaseball
- · Replies 12 ·
Electric Potential: Determining Components of Electric Field
- Tom McCurdy
- · Replies 2 ·
Uniformly Charged Cone - Potential Difference
- nd
- · Replies 5 ·
Compton Scattering: Calculating Wavelength from Energy
- Jacob87411
- · Replies 8 ·
Calculate Force on Small Gear from Torque with Pully and Shaft
- Physics_wiz
- · Replies 2 ·
What instruments could study Neptune's interior?
- relativelyslow
- · Replies 2 ·
Why Is Sqrt(3) Used in Calculating VRMS for Triangle Waves?
- StonieJ
- · Replies 3 ·
Moment of inertia derivations and work integrals for a disc
- stunner5000pt
- · Replies 2 ·
Is the series ∑n/√(5n²+5) convergent or divergent?
- ILoveBaseball
- · Replies 7 ·
How Does Friction Affect a Car's Acceleration on a Curved Track?
- fizz123
- · Replies 7 ·
For people looking to solve/verify an integral:
- ninjagowoowoo
- · Replies 7 ·
Finding wavelength for dark fringe in double-slit interference
- Soaring Crane
- · Replies 9 ·
Expressed all partial derivatives
- Yegor
- · Replies 2 ·
Gas Laws problem with pressure ratios and volume increase
- apchemstudent
- · Replies 2 ·
Calculating Force to Keep 2ft Board Horizontal at 30 Degrees
- NoHeart
- · Replies 17 ·
Electric field between concentric cylinders with grounded outer cylinder
- Hoofbeat
- · Replies 3 ·
Solving a Problem on Spring Energy Inclined Plane
- wetcarpet
- · Replies 2 ·
Thermal Processes: Solving P1, V1, P2, V2 and Volume-Pressure Questions
- dalitwil
- · Replies 4 ·
What Are the Correct Answers to These Physics and Optics Problems?
- indiansfan4life
- · Replies 2 ·
Rocket questions, Fundamentals of Physics
- Volcano
- · Replies 2 ·
Having a lot of trouble in thermodynamics
- Tokimasa
- · Replies 8 ·
Box sliding up an inclined plane with constant velocity
- Laurent
- · Replies 2 ·
Verifying Vector Intersection: Two Questions
- Fila
- · Replies 4 ·
I Find This Very Hard Can Somebody Check This Out
- dagg3r
- · Replies 2 ·
Work of friction on a moving box
- igotserv3d
- · Replies 2 ·
What Calculations Are Needed to Convert Steam to Water and Ice to Steam?
- xxiangel
- · Replies 2 ·
Proving (sec²x-1)/sec²x = sin²x and cos²x/(1+tan²x) = cot²x
- chase222
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Finding angles ABC and CBO in a circle theorem problem
- grahammm
- · Replies 6 ·
What is the difference between impact force and impulse?
- fork
- · Replies 3 ·
Calculating Distance: 12 kg Object with 24 J Kinetic Energy and 6 N Force
- Nimmy
- · Replies 2 ·
Object at focal point of converging lense
- admajoremdeigloriam
- · Replies 2 ·
Yes, that is the correct equation. F = mg + mv^2/R
- Naeem
- · Replies 2 ·
How to differentiate 2x/(x+y) = y, implicitly?
- gillgill
- · Replies 11 ·
Heat to change 1 kg of ice at -20°C to steam at 130°C
- xxiangel
- · Replies 4 ·
Calculating Tension in the Cable to Hold the Moon
- Naeem
- · Replies 2 ·
Optics problems: wavelength, refraction, illuminance, and critical angle
- indiansfan4life
- · Replies 4 ·
Finding escape velocity from Jupiter and the Moon
- UrbanXrisis
- · Replies 19 ·
How to Determine the Center of Mass for a Parabolic Sheet Metal?
- hbomb
- · Replies 15 ·
Distance from ceiling to hour hand tip at 12:35
- perpetual-burn
- · Replies 6 ·
Integrating e^x/(e^{2x} + 1): Long Division?
- RadiationX
- · Replies 4 ·
Find thermal conductivity of metal in a rod
- confused1
- · Replies 2 ·
Ice cubes added to pool to make it cool enough
- confused1
- · Replies 2 ·
Question on Refraction on diff. Substances
- !Live_4Ever!
- · Replies 2 ·
Preparing for AP Test: Aiming for a 5
- tongos
- · Replies 2 ·
Electic field question - geometry
- flythisforme
- · Replies 3 ·
Why does smaller wavelength put the first maximum closer to the central maximum?
- Soaring Crane
- · Replies 7 ·
[COLOR=Navy]Thermal Energy Look Over[/COLOR]:
- joejo
- · Replies 6 ·
Finding final volume in adiabatic expansion of ideal gas
- espnaddict014
- · Replies 8 ·
Gravitational potential energy of the moon
- UrbanXrisis
- · Replies 3 ·
Need confirmation on this integration problem
- jzq
- · Replies 6 ·
Object Speed at Infinite Distance from Earth: 1660 m/s
- UrbanXrisis
- · Replies 2 ·
Finding canonical basis and dimension for a homogeneous system
- JasonJo
- · Replies 2 ·
How does light propagate through a vacuum without a medium?
- [AFT]
- · Replies 2 ·
Equipartition theorem statements about gas pressure and velocity components
- physicsCU
- · Replies 7 ·
Gravitational field from two point masses: why is there an r factor?
- UrbanXrisis
- · Replies 5 ·
Finding the nth derivative of a rational function
- VietDao29
- · Replies 4 ·
How Does Friction Impact Mechanical Energy on an Incline?
- Haroon Pasha
- · Replies 2 ·
Child jumping from swinging seat at vertical position
- Giuseppe
- · Replies 4 ·
Why does Hooke's law show reduced extension at low loads?
- hays_scott
- · Replies 5 ·
Gravitational net force of zero
- UrbanXrisis
- · Replies 10 ·
Le Chatelier and eliminating red meat
- joejo
- · Replies 2 ·
Draw a diagram to interpret this equation geometrially as an equality
- DivGradCurl
- · Replies 4 ·
Spring compressed 1m by 10N force: where does the other half the work go?
- alcatras
- · Replies 5 ·
Alpha decay of uranium-232: is the alpha particle's kinetic energy the Q-value?
- josephcollins
- · Replies 2 ·
What is the convergence status of the given sequence and series?
- ILoveBaseball
- · Replies 3 ·
Force diagram for a person on a scale in an accelerating elevator
- Leaping antalope
- · Replies 8 ·
Finding Friction Force in a 11 kg Sphere
- srhly
- · Replies 6 ·
Understanding Blood Pressure and Heart Rate Variations
- eutopia
- · Replies 5 ·
Archimedes principle and floating slab
- ness9660
- · Replies 7 ·
What is the Distance from Earth to the Moon where Gravitational Pull is Equal?
- UrbanXrisis
- · Replies 8 ·
Solving ty' - y = t^3 - 2t
- tandoorichicken
- · Replies 2 ·
Kirchoffs Laws and Thevinen Equivalent
- coldturkey
- · Replies 7 ·