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 can't an equilateral triangle have vertices at lattice points?
- courtrigrad
- · Replies 19 ·
M's Electric Field Calculation for a Uniformly Charged Wire
- hmmm
- · Replies 3 ·
Why does adding an electron in n-type doping not make silicon more resistive?
- Windex
- · Replies 2 ·
String harmonics and resonance in tuning forks and pianos
- Sarah_L
- · Replies 2 ·
Find digits A, M, and C where (100A+10M+C)(A+M+C) = 2005
- cdhotfire
- · Replies 10 ·
Proving the Algebraic Nature of Root 3 + Root 2 Using Polynomial Expressions"
- lokisapocalypse
- · Replies 13 ·
Coefficient of x^r in the binomial expansion of (1−x)^−3
- misogynisticfeminist
- · Replies 7 ·
How Does Photon Angular Momentum Influence Zeeman Effect Observations?
- secret2
- · Replies 1 ·
What Are the Van der Waals Constants for Sulfur Hexafluoride (SF6)?
- diegojco
- · Replies 2 ·
Questions about Hund's Rules and L-S Coupling
- secret2
- · Replies 2 ·
Did the Last Sip of Tea Heat the Ocean?
- rwh
- · Replies 3 ·
Stone thrown at 30° from cliff edge with final speed 25 m/s
- SAIRA123
- · Replies 2 ·
Optics Problem: What am I doing wrong?
- xenogizmo
- · Replies 5 ·
Proving the Irrationality of √3 and Other Non-Perfect Square Roots
- courtrigrad
- · Replies 25 ·
A system with varying mass - a rocket
- Eus
- · Replies 7 ·
Calculating Resonant Frequency of a Bridge with Added Support
- Haftred
- · Replies 2 ·
How Does Compressing a Spring Store and Release Energy?
- clh7871
- · Replies 2 ·
Electric field strength (should be easy)
- FrogPad
- · Replies 2 ·
Solid sphere rolling up a 30° incline without slipping
- sebasalekhine7
- · Replies 5 ·
What Happens if Electrons and Protons Had Different Charges?
- Gale
- · Replies 16 ·
How Do You Calculate Charge and Tension in Hanging Charged Balls?
- NotaPhysicsMan
- · Replies 16 ·
About to take an exam and I STILL dont understand banked curve questions.
- DLxX
- · Replies 2 ·
Buoyant forces on hot-air balloon
- franklyn
- · Replies 2 ·
Block falls on Spring Work and Speed
- BlasterV
- · Replies 2 ·
How Does a Positron Behave in a Penning Trap?
- stunner5000pt
- · Replies 2 ·
Solving Nonideal Voltmeters with R_V, r, and E
- evilempire
- · Replies 2 ·
Calculating Tension and Acceleration in a Pulley System with Friction
- ndwiseguy
- · Replies 8 ·
Centripital Acceleration question
- DLxX
- · Replies 2 ·
Simplifying tan²x - csc²x/cot²x and proving a trig identity
- Cabal
- · Replies 2 ·
Calculating Average Acceleration of a 747 Airplane
- dg_5021
- · Replies 5 ·
Force applied to the ground from a 1.2 m standing vertical jump
- SteveVer256
- · Replies 2 ·
How do you calculate the force of friction on an inclined plane
- Gogsey
- · Replies 19 ·
Is Using a Catapult on an Asteroid a Viable Propulsion Method?
- Dmt669
- · Replies 3 ·
Oblique Triangle and the Law of Cosines: Solving for Change in Piston Rate
- courtrigrad
- · Replies 4 ·
Question Concerning Chemistry Model
- courtrigrad
- · Replies 8 ·
Poisson distribution question
- semidevil
- · Replies 1 ·
What Could an Unconventional Physics Exam Question Look Like?
- dekoi
- · Replies 5 ·
Bird on transmission line and force on current-carrying wire
- altrez
- · Replies 2 ·
Volume between paraboloid z = 4x² + y² and plane z = 4x + 3
- AKG
- · Replies 3 ·
Rotational Motion. Apparently, I have no idea what I'm doing.
- baby_bunny_bee
- · Replies 2 ·
Velocity as a Function of position
- Drey0287
- · Replies 2 ·
Uniform Circular Motion of a ball
- jewel203
- · Replies 2 ·
Why is L the angular momentum
- hun_nomin
- · Replies 3 ·
Semester review: impulse, circular motion, momentum
- Zoe
- · Replies 3 ·
How Do You Calculate the Equation of an Ellipse for Specific Scenarios?
- JeNNeHJo
- · Replies 5 ·
Angular Acceleration and a grindstone
- bamalam
- · Replies 2 ·
How Much Force Did Jean Valjean Need to Climb the Walls in Les Miserables?
- bob5000
- · Replies 5 ·
Oval Track Motion: Velocity Vectors G and H
- khf
- · Replies 1 ·
How Do You Integrate sqrt(x^2 - 9) for Hyperbola Area Calculation?
- sporff
- · Replies 10 ·
How Do You Calculate Vector Components of Velocity?
- shawonna23
- · Replies 2 ·
Potential Due to collection of point charges
- GingerBread27
- · Replies 4 ·
Calculus review for statistical mechanics with Callen
- pt176900
- · Replies 2 ·
Is the Solution to This Differential Equation Unique?
- stunner5000pt
- · Replies 2 ·
Finding mass of air at 70F and 200psi to calculate specific volume
- Frustra8ed
- · Replies 3 ·
How Can a Pilot Adjust Course for Wind to Maintain a Westward Path?
- CaptainofIron
- · Replies 2 ·
OUNT OF TIME IN SECONDSHow far will the accelerating car overtake the truck?
- Gary King
- · Replies 7 ·
How to Calculate the Frequency of Lightwave at 500nm Wavelength
- Grandor
- · Replies 6 ·
Momentum and radiation pressure
- nemzy
- · Replies 2 ·
Tune Radio to 5.30 MHz with 1.04 µH Inductance
- nemzy
- · Replies 4 ·
Finding friction force and coefficient when pushing a box at constant velocity
- tobyguy
- · Replies 12 ·
New to physics - throw me a bone here
- Grandor
- · Replies 11 ·
Find the distance the particle travels
- ProBasket
- · Replies 4 ·
Solving Int. sin(9x)sin(16x)dx w/o Multiple Angles
- ProBasket
- · Replies 4 ·
What is the distance between the cliffs?
- Bri
- · Replies 2 ·
Domain of solution to differential equation with cube root
- stunner5000pt
- · Replies 2 ·
What is the magnitude of the charge inside the box?
- azazelis
- · Replies 2 ·
Solving Physics Equation: "v=m1v1+m2v2/(m1+m2)"
- UrbanXrisis
- · Replies 3 ·
How do I solve for the value of areal density given the mass and radius?
- Deeviant
- · Replies 2 ·
Electric field on a point charge
- Electro
- · Replies 2 ·
How Do You Calculate Initial Speed and Acceleration of a Decelerating Truck?
- VeeVee151
- · Replies 2 ·
What Are the Spring Constant and Mass in This SHM Problem?
- foggy
- · Replies 2 ·
Heat conduction melting ice in a copper rod
- 2099
- · Replies 4 ·
Two Questions -> Speed of Light
- Kawrae
- · Replies 2 ·
How do related rates apply to circles, rectangles, and spheres?
- courtrigrad
- · Replies 6 ·
Shaving Cream in a Vacuum project
- Bissli
- · Replies 2 ·
Preparing for AP Physics B exam after failing first semester
- SnitchSeekaHarry
- · Replies 2 ·
Solved problems in modern physics beyond Serway
- mike217
- · Replies 2 ·
Grade 11 Physics Help: Solving 3 Challenging Questions for Your Exam Tomorrow
- leafs rule
- · Replies 6 ·
Reflections between two parallel mirrors 1.60m high
- Kawrae
- · Replies 2 ·
Formulas for Copper (II) Chlorate
- seve
- · Replies 10 ·
Calculating Total Power of Heaters Connected in Series
- figs
- · Replies 6 ·
How Do Trigonometric Identities Derive from Basic Formulas?
- aisha
- · Replies 2 ·
Football kicked at 50° traveling 20 m
- XtremeChic4
- · Replies 2 ·
Force problem for elastic stretch
- hackerdiety03
- · Replies 3 ·
What are the sign conventions for force in physical chemistry?
- hackerdiety03
- · Replies 3 ·
Coefficient of Sliding Friction Lab
- vitaly
- · Replies 2 ·
Simplifying (√18 + √12) / (√8 - √96) in terms of p and q
- Gughanath
- · Replies 6 ·
Could someone verify my answers?
- Matt.D
- · Replies 11 ·
How can I solve these mirror problems without getting the wrong answer?
- Kawrae
- · Replies 5 ·
Related Rates of a triangle angle
- courtrigrad
- · Replies 5 ·
What is the speed of water waves?
- jai6638
- · Replies 15 ·
Calculating Thermal Efficiency: Is There More to Consider?
- togepyamy
- · Replies 2 ·
MergeSort error: 'Mege is undefined'
- courtrigrad
- · Replies 2 ·
Acceleration and constant speed question
- dbzsongoku
- · Replies 8 ·
I have a few questions for my Phys Lab
- scissors
- · Replies 12 ·
Trignometric identities question
- tempeste
- · Replies 5 ·
Why Does Graphing and Completing the Square Give Different Maximum Heights?
- Markd
- · Replies 2 ·
Scuba Diving and Ideal Gas Law
- Soaring Crane
- · Replies 5 ·
Verifying a physics theory with homemade experiments
- NeoVision
- · Replies 2 ·
Vector operations in polar coordinates?
- Coeyo
- · Replies 2 ·