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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Can Freezing and Melting Water Warm a Home? Answers Here!
- Danko
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Does Water's Permittivity Affect the Dissolving Process of NaCl?
- briton
- · Replies 2 ·
What force does Pete exert on the rope?
- Kdawg
- · Replies 6 ·
Work done on a stationary swimmer in a river current
- b_ball_gurl87
- · Replies 5 ·
Calculating Acceleration in Different Positions Using Newton's 2nd Law
- Stargate
- · Replies 10 ·
Calculating Force on the Bottom of a Cylinder in Fluid Physics
- Yegor
- · Replies 3 ·
Normal force as a function of time for a mass sliding down y=e^x
- sastory
- · Replies 10 ·
Time for a dart thrown horizontally from 1.8m to hit a board at 1.5m
- misogynisticfeminist
- · Replies 10 ·
How Does Changing Charge Magnitude and Distance Affect Electrostatic Force?
- hype_chicky
- · Replies 32 ·
How to Name a Compound with Both Double and Triple Bonds?
- Itachi
- · Replies 3 ·
How to Calculate Enthalpy Using Specific Heat Capacity and Mass
- courtrigrad
- · Replies 8 ·
Simple Harmonic Motion of a car's tires
- Bri
- · Replies 2 ·
Circumcenter poi (triangle) - confuced
- ssj-gohan
- · Replies 2 ·
Max Planck's Contributions to Physics. How does it apply to everyday life?
- AmberH
- · Replies 5 ·
Why can't string length, wave velocity and frequency determine tension?
- Soaring Crane
- · Replies 2 ·
Finding tan(θ) from sin(θ) in the fourth quadrant
- aisha
- · Replies 20 ·
How to Calculate Electric Potential and Work for Multiple Charges?
- thursdaytbs
- · Replies 5 ·
Why does an object have kinetic energy even when it's not moving?
- courtrigrad
- · Replies 3 ·
Optimal Number of Passengers for Maximum Railroad Revenue
- courtrigrad
- · Replies 4 ·
Finding the charge given distance apart + some more
- thursdaytbs
- · Replies 5 ·
Finding tension in cord when dart-block pendulum swings back down
- physicsgirl101
- · Replies 66 ·
Solving z^4 + 2z^3 - 5z + 1 = 0
- recon
- · Replies 12 ·
Resolving Ecuations with $\Psi$, $\vec{v}$, and $\nabla$
- Raparicio
- · Replies 2 ·
General Equation for an Ellipsoid
- tandoorichicken
- · Replies 2 ·
At what displacement is the speed maximized in SHM
- Soaring Crane
- · Replies 2 ·
Answer: SHM: 45g Mass, .35m Amp - Speed Half Max Velocity
- Soaring Crane
- · Replies 2 ·
How'd this happen in my experiment?
- !Live_4Ever!
- · Replies 7 ·
Lens/Radius of Curvature Question
- johnwalton84
- · Replies 4 ·
Green fuktion on the wave operator in 1 dimension
- nobody2100
- · Replies 8 ·
Understanding Nabla Operator with Vector A
- Raparicio
- · Replies 3 ·
How Can You Show That Two Ships Will Collide Using Vectors?
- NinaL
- · Replies 4 ·
Find the turning point of y=4x^2-8x-5
- footprints
- · Replies 7 ·
Finding x and y in a Right-Angled Triangle with Given Hypotenuse and Area
- footprints
- · Replies 6 ·
Simple Harmonic motion of particle on a table
- Clari
- · Replies 2 ·
Why Is the Moment of Inertia of a Uniform Disc 1/2MR^2?
- CuriousJonathan
- · Replies 11 ·
Can I Upload Images Here? Problem Solving for Non-Native English Speakers
- Nguyen Thanh Nam
- · Replies 4 ·
Total resistance of n resistors in series, parallel, and series-parallel arrangements
- metz143
- · Replies 2 ·
How Fast Must a Pion Travel to Cover 15 Meters Before Decaying?
- Eich
- · Replies 11 ·
Optimizing Distance for Swimming and Running Combination
- recon
- · Replies 15 ·
Finding the Coefficient of Friction: Wrong Answer and Need to Fix
- Port
- · Replies 8 ·
Help Quickly: Solve Coefficient of Kinetic Friction Problem
- Port
- · Replies 9 ·
Calculating Distance of an Electron Moving in a Plane Using Derivatives
- courtrigrad
- · Replies 4 ·
What is the derivative of (b^2*x^2 + x^2*y^2 = a^2*b^2) with given values?
- courtrigrad
- · Replies 7 ·
Electric potential energy with unknown mass and charge
- thursdaytbs
- · Replies 5 ·
Cart pushed with 12N force, 85N child added, distance in 3.5s?
- Port
- · Replies 24 ·
Does vacuum actually exist or is some medium required?
- Zaimeen
- · Replies 37 ·
Sin cos problem finding exact value
- aisha
- · Replies 8 ·
How Does Thermal Expansion Affect the Tension in a Stainless Steel Band?
- ballahboy
- · Replies 5 ·
Six momentum problems with cars, cannons, bullets and collisions
- Beowulf
- · Replies 3 ·
Thermal physics How would I go about this one?
- benji
- · Replies 3 ·
Not sure how to approach problem
- Markd
- · Replies 55 ·
How do I evaluate this properly? Trig
- aisha
- · Replies 4 ·
Couldn't find a specific heat for coffee
- benji
- · Replies 13 ·
How to Determine Velocities After a Collision in a Physics AP Mechanics Problem?
- physicsgirl101
- · Replies 37 ·
Calculating Specific Heat Capacity of Nickel with Coffee Cup Calorimeter Method
- courtrigrad
- · Replies 10 ·
Calculating ∆H for a Chemical Reaction
- courtrigrad
- · Replies 7 ·
Volume of Solid w/ Semicircular Cross Sections in 1st Quadrant
- radtad
- · Replies 5 ·
How Do Doppler Effects Determine the Frequency of a Whistle in Motion?
- Jacob87411
- · Replies 4 ·
Physics concepts for a paintball game project
- Cephalid-Hunter
- · Replies 3 ·
What Are Some Data Management Project Ideas on Environmental Issues?
- majinknight
- · Replies 2 ·
Physics (mechanics) AP Problem-involving kinetic energy of a moving object
- physicsgirl101
- · Replies 10 ·
What are some common misconceptions in thermodynamics?
- Kawrae
- · Replies 7 ·
Physical Explanation of a Pull-Back Car
- deanchhsw
- · Replies 3 ·
Finding final velocity of dropped ball using F = dp/dt
- UrbanXrisis
- · Replies 8 ·
Measuring stress on bridge models
- zyedy
- · Replies 3 ·
Can Consecutive Integers Minimize This Mathematical Expression?
- Pandaren
- · Replies 2 ·
[Early Phys. Science]: Speed Equation
- Jessi
- · Replies 4 ·
What Determines the Maximum Height of a Self-Supporting Column?
- Jacob87411
- · Replies 2 ·
Indirect Proofs: Shaping the Proof
- ConcealedDreamer
- · Replies 2 ·
Upthrust Question: 2 Conditions for Independence on Depth
- Zaimeen
- · Replies 3 ·
Is It Safe for a Painter to Walk to Both Ends of a Scaffold?
- Jacob87411
- · Replies 2 ·
Inclined Plane Friction Question
- pulau_tiga
- · Replies 2 ·
Heat capacity and viscosity in real life
- !Live_4Ever!
- · Replies 2 ·
Car decelerating from 35 m/s with 2000 N braking force
- lcg
- · Replies 11 ·
Change of momentum and kinetic energy
- kgthatsme
- · Replies 4 ·
Steel beam deflection with central load
- physkid
- · Replies 9 ·
Explanation of Bernouilli's principal of lift?
- xckycheezwhizx
- · Replies 4 ·
Solve Calc Problem: Find y if dy/dt=ky and k is a Nonzero Constant
- radtad
- · Replies 2 ·
Derivative of Force and Work in Respect to Time
- UrbanXrisis
- · Replies 32 ·
Where'd I go wrong (sound problems)
- Jacob87411
- · Replies 3 ·
Whats A Right Handed Triplet In Vectors ?
- coldfusion
- · Replies 2 ·
What Experiments Can I Do to Spark Interest in Physics for Teenagers?
- aviv87
- · Replies 2 ·
Should you carry a crate from the upper or lower end on stairs?
- jocs_1116
- · Replies 2 ·
AP Physics impulse problem
- BITI
- · Replies 11 ·
Gravitational potential calculation
- Sanosuke Sagara
- · Replies 2 ·
Calculus based elementary physics
- GCT
- · Replies 2 ·
Finding initial force on marble up 45° ramp without time given
- deserthaze06
- · Replies 12 ·
Total energy; confusion with teacher's statement
- UrbanXrisis
- · Replies 11 ·
How to Determine Acceleration on a Frictionless Inclined Plane with Normal Axis?
- scuddman
- · Replies 10 ·
Calculating Table Torque to Tip Over: 36 kg Weight
- Jacob87411
- · Replies 2 ·
Finding Integers Divisible by 2, 3 or 5 - Solve Here!
- Physics is Phun
- · Replies 6 ·
Finding Specific Heat of 2 substances mixed
- cdhotfire
- · Replies 24 ·
Can Hess's Law be used to systematically manipulate chemical formulas?
- courtrigrad
- · Replies 7 ·
Angle of line of sight for a vertically lauched rocket
- ziddy83
- · Replies 4 ·
Interest rate for $150 growing to $275 in 8 years
- sp00ky
- · Replies 2 ·
How do I find the derivative of y using implicit differentiation?
- courtrigrad
- · Replies 6 ·
When was Brampton's population 51003?
- fomenkoa
- · Replies 8 ·
Computational Physics - Scaling
- secret2
- · Replies 4 ·
The question:Rewriting Series with Sigma Notation
- Mo
- · Replies 8 ·
Can I express angle X in circular motion using L, M and ω?
- datatec
- · Replies 2 ·