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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If we have to use a match to start a reaction, is it endothermic?
- Chocolaty
- · Replies 5 ·
Applying gauss' law to planar symmetry, finding E question
- mr_coffee
- · Replies 2 ·
K, the idealized surface current density
- Palindrom
- · Replies 4 ·
Differential equation - looking for a minor mistake in my solution
- DivGradCurl
- · Replies 2 ·
Proving One-to-One Functions Using Inverse and Implicit Function Theorems
- jessawells
- · Replies 7 ·
Kinetic energy of a rotating wheel?
- badman
- · Replies 4 ·
Rain's velocity with respect to a moving car
- Zem
- · Replies 2 ·
Need Help with Calculus Summer Assignment on Cosine Identities?
- hotrocks007
- · Replies 11 ·
What Can I Do When I'm Stuck at Work Without Reference Materials?
- Bando
- · Replies 2 ·
Trig - Help with tan(arccos(x/3))
- TKDKicker89
- · Replies 2 ·
Draw free body diagrams for each sphere
- frozen7
- · Replies 4 ·
Solving a Tension Angle Physics Problem with Three Equations | Physics Forum
- frozen7
- · Replies 6 ·
Kater's Pendulum: What is it & Advantages
- physics4ever
- · Replies 2 ·
How did you successfully delete a problem?
- kepler
- · Replies 2 ·
Linear Transformation: Finding the Matrix of T
- Benny
- · Replies 6 ·
Is a Basketball Dribble Simple Harmonic Motion?
- Lalasushi
- · Replies 2 ·
Can someone check these out please?
- wickid
- · Replies 2 ·
Is g integrable if it equals f at all but a finite number of points?
- jeanf
- · Replies 2 ·
Unraveling the Mystery of Dimensional Analysis
- Beholder
- · Replies 3 ·
How to solve the integral of Ax^2 * exp(-x^2/2a^2)
- danai_pa
- · Replies 3 ·
What is the direction of the third force in my physics homework problem?
- ChinToka
- · Replies 13 ·
Current density and theorem of curl of curl
- mingshey
- · Replies 3 ·
Height of Milk in a Carton with Two Pierced Holes
- TeTeC
- · Replies 3 ·
Buggies moving at the same velocity
- stupidkid
- · Replies 2 ·
Oscillations, energy conservation
- Lalasushi
- · Replies 4 ·
Sliding ladder leaning against wall, and a triangle of maximum area
- punjabi_monster
- · Replies 5 ·
Sketch the graph of y = x + sin(x)
- bengalibabu
- · Replies 4 ·
Triangle Inequality: Proving and Understanding
- blanik
- · Replies 5 ·
Last Java programming questions
- JasonJo
- · Replies 3 ·
Why doesn't changing the Gausssian sphere change the net flux?
- mr_coffee
- · Replies 7 ·
Calc problem (area of parametric curves)
- itzela
- · Replies 6 ·
Calculating the Radius of Curvature of a Distant Tree's Virtual Image
- Jodi
- · Replies 2 ·
How Accurate is the Freezing Point Calculation for Ethanol at 1000 atm?
- koomanchoo
- · Replies 2 ·
Application of Vectors: Work (calc 3)
- ek530n
- · Replies 10 ·
What Factors Affect the Velocity of Light Projected by Lasers?
- dsalazar21
- · Replies 5 ·
Confused on determining an enclosed a postive/negative/no net charge
- mr_coffee
- · Replies 2 ·
How long does it take to stop the car
- bob4000
- · Replies 2 ·
Integrals 0 to ∞: Tricky Problems Solved
- Phoenix314
- · Replies 6 ·
Solving sqrt of ((1-sinx)/(1+sinx)) = |secx-tanx|
- Gill
- · Replies 5 ·
What is the Probability of Event S Happening?
- Townsend
- · Replies 6 ·
Solving the Logarithmic Equation: \ln(x)^{\ln(x)} = x^\ln(\ln(x))?
- Yegor
- · Replies 2 ·
Solve a Strange Trig Problem: Distance to a Castle Spotted by Two Men in a Car
- danne89
- · Replies 5 ·
Instantaneous velocity and average velocity
- Struggling
- · Replies 6 ·
Calculating Force Needed to Distort Steel Plate
- samemikejones
- · Replies 3 ·
How Does Increasing Mass Affect Acceleration in a Frictional System?
- Gjky424
- · Replies 2 ·
Radial Velocity, Angular Separation, and Solar Apex: Q&A
- ek
- · Replies 2 ·
BC Calculus Help: Limits, Optimization, and Evaluating Series
- Phoenix314
- · Replies 4 ·
Wood block sliding on 25 degree angle
- Gashouse
- · Replies 3 ·
Why Does the Denominator Include mR^2 in the Angular Acceleration Formula?
- physics noob
- · Replies 2 ·
Equilibrium and Tension questions - PLEASE HELP ME
- nperk7288
- · Replies 28 ·
Calculating Tension of Connected Blocks on a Horizontal Surface
- MutTurwen
- · Replies 2 ·
Finding the electric flux through the right face, confused on integration
- mr_coffee
- · Replies 7 ·
Calculating Acceleration Force: How Much Mass Can a Given Force Accelerate?
- Gashouse
- · Replies 2 ·
Sigma [sin(1/x)] for x=1 to ∞: Converge or Diverge?
- Phoenix314
- · Replies 4 ·
Circular Motion and Gravitation HELP
- kittn44
- · Replies 2 ·
Minimum stopping distance problem
- Gashouse
- · Replies 2 ·
Simple Harmonic Problem: Finding Time at x=-0.05m with Mass on Spring
- physics noob
- · Replies 14 ·
Differential equation (I really )
- Beez
- · Replies 20 ·
Max Tangential Speed of Mass Before Cord Breaks
- MutTurwen
- · Replies 4 ·
Motion of a Particle in x-y Plane: Calculations
- Gjky424
- · Replies 2 ·
Find the speed of the box moving up the plane 3 sec later.
- Bama
- · Replies 4 ·
What Is the Maximum Angle Theta for Equilibrium in a Statics Weight Problem?
- ninjagowoowoo
- · Replies 2 ·
What is the Impact of CPI on Real Salary Calculations?
- lms
- · Replies 3 ·
What is the Speed and Centripetal Acceleration of a Rotating Grinding Wheel?
- frozen7
- · Replies 2 ·
Is PhysicsNow a useful tool for college students studying physics?
- MaryL
- · Replies 2 ·
Discover the Heat of Combustion of Methane (CH4) Using Bond Energies
- Chocolaty
- · Replies 3 ·
Physics metal and air density problem
- mathelord
- · Replies 2 ·
How Do You Calculate the Distribution of 15 Gifts Among People and Parcels?
- ms. confused
- · Replies 2 ·
Proving the Existence of Rational Numbers Between Real Numbers
- Anzas
- · Replies 5 ·
How Do You Find the Weight of a Beam Using Spring Scales?
- melaku
- · Replies 3 ·
What is the third way to solve integral (x/sqrt(x^2-9))dx?
- shadow5449
- · Replies 2 ·
An Elementary question for general physics
- James3
- · Replies 2 ·
Solving Integral Problem: Stuck?
- shadow5449
- · Replies 2 ·
How Do You Solve This Complex Physics 12 Torque Problem?
- seiferseph
- · Replies 11 ·
How to Calculate the Spring Constant for Simple Harmonic Motion?
- physics noob
- · Replies 3 ·
Cool Question about the doppler effect
- benhorris
- · Replies 6 ·
Understanding the Two Solutions of 3x^(1/2) = x^(1/2)
- frozen7
- · Replies 4 ·
Calculating Orbit Distance from Equator w/ Particle in Bowl
- Päällikkö
- · Replies 6 ·
Solve Test Questions for Final: Help Appreciated
- MutTurwen
- · Replies 2 ·
Why Is a 200 N Upward Force Required to Match Gravity in MCAT Physics?
- LeKahlua
- · Replies 3 ·
How to Write Formulae Without a Normal Keyboard?
- aricho
- · Replies 3 ·
Calculating Force & Energy of Impact on Deimos
- kepler
- · Replies 9 ·
How can dimensional analysis be used to catch mistakes in physics problems?
- rc75
- · Replies 4 ·
Factoring polymonial with complex roots
- ACLerok
- · Replies 3 ·
Discovering the Term Containing x^{20} in Binomial Theorem (2x - x^4)^{14}
- ms. confused
- · Replies 5 ·
M Underwater Vehicle Water Pressure
- samemikejones
- · Replies 2 ·
Finding the 26th Derivative of g(x) at 0
- R_Y_A_N
- · Replies 15 ·
Another Klassical Mechanics Dilemma
- UglieDuckie
- · Replies 7 ·
Calculating Max Speed of a Particle on String
- vroman
- · Replies 2 ·
Wallpaper Groups, Free Groups, and Trees
- AKG
- · Replies 13 ·
Why should brakes be applied slowly on slick roads?
- ka123
- · Replies 4 ·
Archimedes principle, bernoulli's equation
- Lalasushi
- · Replies 6 ·
Compressed Spring & Acid: E.P.E Impact & Reasons Explained
- stupidkid
- · Replies 2 ·
How Do You Calculate the Compression of Aluminum and Brass Rods Under Force?
- Lalasushi
- · Replies 2 ·
Determining the electric field at point a and b, stuck on finding resultant E
- mr_coffee
- · Replies 6 ·
How Do You Calculate the Angle in a Towing Scenario Using Work and Force?
- nissanfreak
- · Replies 7 ·
Computer Architecture Practice Final Questions
- JasonJo
- · Replies 9 ·
Acceleration Caused by some Forces on a Cart,
- SpeeDFX
- · Replies 7 ·