Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Estimate takeoff speed of aircraft
- physicsss
- · Replies 8 ·
Understanding Specific Heat and Calorimetry: Experiment or Equation?
- misskitty
- · Replies 3 ·
Momentum of Bullet and Angle of Impact: A Physics Lab
- SnitchSeekaHarry
- · Replies 2 ·
Solving 2/3 k - (k + 1/4) = 1/12 (k + 4) but answer doesn't check
- amandablackwood
- · Replies 3 ·
What is the minimum normal force he must exert?
- physicsss
- · Replies 2 ·
Designing Shoes to Walk on Eggs: Ideas Welcome!
- flipper2388
- · Replies 4 ·
Why The earth and the moon attract each other with a gravitational force
- mark9159
- · Replies 11 ·
Solving an Entropy Problem: Finding the Temperature T in a Carnot Engine
- Rachel C
- · Replies 5 ·
How Do You Set Up Equations for Electrical Circuit Problems?
- tzeteng
- · Replies 6 ·
How Does Charge Distribution Affect Forces in a Polygonal Arrangement?
- Imo
- · Replies 2 ·
Car generator output at different rotation speeds
- airkapp
- · Replies 4 ·
Will planets eventually fall out of orbit due to gravity failing?
- phy
- · Replies 6 ·
Questions on Magnetic Induction
- metz143
- · Replies 2 ·
The Conservation of Mechanical Energy
- zizikaboo
- · Replies 2 ·
Friction force on a 10 kg block on a 30-degree incline
- FocusedWolf
- · Replies 2 ·
Airline overbooking with normal approximation and continuity correction
- semidevil
- · Replies 2 ·
Why my trig equation solutions don't match the answer key
- aisha
- · Replies 9 ·
Skateboarder work and gravitational potential energy change
- kpangrace
- · Replies 3 ·
Find out weather differences in relative humidity
- aisha
- · Replies 3 ·
Relationship between ppl and # of handshakes
- aisha
- · Replies 21 ·
Which Model Better Values American Options: Binomial or Black Scholes?
- courtrigrad
- · Replies 7 ·
What is the force on an electron moving in a magnetic field?
- airkapp
- · Replies 6 ·
Investment Calculator: Calculating Total Profit~~
- neik
- · Replies 5 ·
How to Design a Traffic Light with a DC Power Supply
- Shahil
- · Replies 3 ·
Calculating Spring Stretch in a Horizontal Setup
- whereisccguys
- · Replies 3 ·
Volume Integration: Calculate Rotated Region Bounded by y=9-X^2, X=2
- Link
- · Replies 3 ·
Calculating Electric Field: Solving for a Moving Rod
- whitetigerboy56
- · Replies 3 ·
Does Special Relativity Affect the Work Needed to Accelerate a Particle?
- matpo39
- · Replies 2 ·
Window washer on scaffold torque equilibrium problem
- misskitty
- · Replies 2 ·
What is the Weight of an Astronaut on a Shuttle 518917m Above Earth?
- mohlam12
- · Replies 10 ·
How Many Revolutions Before the Tube Breaks in Nonuniform Circular Motion?
- flyguyd
- · Replies 3 ·
Two particles in a magnetic field
- sony
- · Replies 2 ·
What Type of Circuit Is This?
- tinhnho
- · Replies 2 ·
Thermal physics - partition function
- jessawells
- · Replies 2 ·
How to Calculate Horizontal Projectile Motion on the Moon
- mohlam12
- · Replies 19 ·
Non-mechanical timing device for 10–40 seconds without electricity
- k_2_the_arma
- · Replies 12 ·
Is There a Tangent Plane on x^2-3y^2+2z=4 Parallel to 2x+y-z=4?
- Romperstomper
- · Replies 2 ·
Electrostatics: Calculating Charge on Suspended Spheres
- Neerolyte
- · Replies 4 ·
2 frequencies within an interference pattern
- lektor
- · Replies 4 ·
Calculating Acceleration: Understanding Horizontal Forces on a 3kg Mass
- RadiationX
- · Replies 5 ·
How Do You Find the Area Between Intersecting Graphs?
- ProBasket
- · Replies 4 ·
Evaluating the integral of √(x−x²)
- ToxicBug
- · Replies 8 ·
Finding the Speed of a Falling Brick on a Slope
- sony
- · Replies 10 ·
Finding theoretical pressure and discharge coefficient in venturi tube
- fcukniles
- · Replies 21 ·
Solve Excercise 9 in AP Calculus: Find DELTA for |f(x)-L| < E
- Pseudo Statistic
- · Replies 2 ·
How do waves form and dissipate in water?
- primarygun
- · Replies 2 ·
Calculating Torque of sphere resting on an inclined plane
- candyshot
- · Replies 3 ·
Why does |x| equal -x when x approaches 0 from the left?
- ktpr2
- · Replies 20 ·
Why do I make careless mistakes during exams when I understand the material?
- A_I_
- · Replies 4 ·
How Do You Find the Radius When a Circle's Area and Circumference Total 16?
- lektor
- · Replies 6 ·
How to extract sulfur from ground water
- bigtoe
- · Replies 3 ·
What is the tension in the rope if The box is at rest?
- mugzieee
- · Replies 3 ·
Solve the 2x Equation: 2^2x-12(2)^x+32=0
- thomasrules
- · Replies 3 ·
How Accurate Are My Physics Problem Solutions?
- woodworker101
- · Replies 3 ·
Ball hits vertical wall elastically: finding final velocity angle
- RhysticGenesis
- · Replies 5 ·
How Do Friction and Centripetal Force Affect Motion on a Slide and a Rotor Ride?
- Vlyandra
- · Replies 2 ·
How Is Potential Difference Affected When a Loop Exits a Magnetic Field?
- thursdaytbs
- · Replies 2 ·
Abstract Algebra - Centralizers
- vsage
- · Replies 2 ·
Velocity of Lithium Atom Powered by 1mW Laser Beam
- stunner5000pt
- · Replies 11 ·
Finding the End Behaviour Model for a Power Function?
- ms. confused
- · Replies 2 ·
Does energy loss occur when two identical capacitors are connected in parallel?
- thisisfudd
- · Replies 9 ·
Graphing f(x)=2^2+9/5x^2+2 with imaginary asymptotes
- Rasine
- · Replies 6 ·
Statistical/thermal physics problem
- Dracovich
- · Replies 11 ·
A hypothetical pressure question lifting a 10,000kg object
- vaxopy
- · Replies 2 ·
What is the current through the wire?
- thisisfudd
- · Replies 6 ·
One of those problems that looks simple but probably isn't
- thisisfudd
- · Replies 3 ·
Solving 1+8x^{-1}+15x^{-2}=0
- thomasrules
- · Replies 8 ·
Solving Capacitor Problem with 2 Capacitors
- thisisfudd
- · Replies 16 ·
What Is the Potential Along the X-Axis Due to Two Point Charges on the Y-Axis?
- quick
- · Replies 2 ·
Calculating Angular Acceleration in a Pivoted Rod
- UrbanXrisis
- · Replies 2 ·
Determine half-life of this substance
- thomasrules
- · Replies 5 ·
Capacitors charging capacitors
- biigturkey
- · Replies 9 ·
FBD and what forces should I include?
- hahaha
- · Replies 6 ·
How Does Charge Distribution Affect Fields and Energy in Nested Conductors?
- DR33
- · Replies 4 ·
Why Is the Electric Field Inside a Solid Metal Sphere Zero?
- thisisfudd
- · Replies 2 ·
Moment of inertia of an irregularly shaped object
- UrbanXrisis
- · Replies 3 ·
Does the Summation of a Number Equal Its Square Root?
- whatzzupboy
- · Replies 17 ·
Thermal/mechanical properties of matter
- fasterthanjoao
- · Replies 4 ·
How do I convert 20 mm of gas to pascals?
- fcukniles
- · Replies 2 ·
What Happens to a CRO Screen When Switching Between AC, GND, and DC Modes?
- adrienne
- · Replies 3 ·
Centrip Force and Coef. of Friction
- Dunience
- · Replies 2 ·
Kinematics - Finding velocity of a baseball
- kidia
- · Replies 2 ·
Calculating Power and Energy Consumption in Electrical Circuits
- hackeract
- · Replies 5 ·
Show that 2/log₉ A - 1/log₃ A = 3/log₃ A
- thomasrules
- · Replies 12 ·
How Do I Determine the Thermal Conductivity of Glass from My Graph?
- chickens
- · Replies 3 ·
Integrating 1/cos²(2y)
- andrew410
- · Replies 2 ·
Efflux problem is my work valid?
- cepheid
- · Replies 2 ·
Solving for x in (x + 1×10⁻⁸)(x) = 1.0×10⁻¹⁴
- stressedout
- · Replies 3 ·
Lissajous figure and oscilloscopes problem
- figs
- · Replies 4 ·
Finding the mass of the moon from density and diameter
- R.J.
- · Replies 4 ·
Battery and potential difference
- thisisfudd
- · Replies 4 ·
Two questions involving factoring
- erik05
- · Replies 4 ·
Calculating Average Force from Water Flow Rate and Height
- mooshasta
- · Replies 3 ·
Finding force on a suitcase handle and normal force on an inclined plane
- woodworker101
- · Replies 2 ·
What Are the Best Science Projects for Extra-Curricular Learning?
- Specimen
- · Replies 7 ·
Solving the Train and Spring Problem
- whereisccguys
- · Replies 2 ·
Diagonal Rule in Chemistry and Electron Configuration
- courtrigrad
- · Replies 2 ·
Finding distance r for zero net magnetic field from loop and straight wire
- GingerBread27
- · Replies 2 ·
Calculating Initial Separation of Charged Particles Using Conservation Laws
- NotaPhysicsMan
- · Replies 11 ·