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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Solving a Simple Force Problem: Acceleration and Apparent Weight Calculation
- BoogieL80
- · Replies 1 ·
Finding where f(x) = x + 9/x is increasing and decreasing
- wr1015
- · Replies 2 ·
Deriving the Lorentz Velocity Tranformation
- Jibobo
- · Replies 4 ·
What properties should I include in a report about periodic table periods?
- bayan
- · Replies 2 ·
Time for projectile to cross a line through the origin
- don_anon25
- · Replies 1 ·
Proving Isometry Preserves Distance in R^3 with f(0)=0
- bookworm_07
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What happens when two people pull on a rope with different forces?
- Kristin
- · Replies 3 ·
How Does Catching a Ball Illustrate the Conservation of Momentum?
- erik-the-red
- · Replies 1 ·
Finding electron speed in a magnetic field with given field strength
- Idea04
- · Replies 9 ·
How Can a Swimmer Land Directly Across a River with a Current?
- F.B
- · Replies 1 ·
Expansion of E-Field of a Uniformly Charged Flat Circular Disk
- Phymath
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How to Manipulate Lim Sups and Lim Infs in Proofs?
- cmurphy
- · Replies 2 ·
Isolation of a variable exponent?
- Trepidation
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Calculating Current and Voltage in a Series Resistor Circuit
- Midas_Touch
- · Replies 5 ·
What is the difference in masses of planets A and B?
- Serena_Greene
- · Replies 4 ·
Calculating the Speed of a Pendulum Using the Law of Conservation of Energy
- agentd00nut
- · Replies 6 ·
Steady state vector and probability after 3 transitions in Markov chain
- mr_coffee
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Relativity - running person gains mass
- recon
- · Replies 2 ·
Calculating Drag Force Constant in a Simple Physics Problem
- azure.hubris
- · Replies 3 ·
Verifying a Calculation of Curvature
- mr_coffee
- · Replies 2 ·
Force, acceleration, gravity question
- Kristin
- · Replies 4 ·
Finding length of the curve, did i mess up simpifying?
- mr_coffee
- · Replies 2 ·
Newton's Third Law/ Circular Motion
- dekoi
- · Replies 1 ·
Finding weight of 1 kg rock falling 2.5 m in 1 second
- CollegeMom
- · Replies 2 ·
Finding Discontinuity Algebraically
- Aresius
- · Replies 1 ·
Pressure, force, hydraulic lift problem
- huskydc
- · Replies 2 ·
Finding the line of reflection for the matrix transformation with cos and sin
- bookworm_07
- · Replies 1 ·
Amplitude of an oscillating system graph
- Oerg
- · Replies 2 ·
Physics problems Classical Mechanics and Gravitation
- Superdreamer
- · Replies 1 ·
Level curve of (x² + y²)e^(xy) through point (1,0)
- SigmaCrisis
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Parallel-Plate Vacuum Capacitor
- LostinPhysics
- · Replies 1 ·
Can two steel cables stop a 4000 lb cart from 40 mph in 5 ft?
- DKTKD
- · Replies 1 ·
Understanding Point Charges: Same Sign, Different Magnitudes?
- smunger81
- · Replies 2 ·
Liquid nitrogen temperature superconductors
- gapgirl1010
- · Replies 1 ·
What Is the Role of Static Friction on an Inclined Plane?
- r3dxP
- · Replies 3 ·
What is the best method to solve a 2D water wave equation?
- hunt
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Three point charges at square corners with zero net field
- smunger81
- · Replies 12 ·
Entropy change for nitrogen compressed in polytropic process
- mohdfasieh
- · Replies 2 ·
Finding eigenvalues of a 2×2 matrix using row operations
- Benny
- · Replies 1 ·
Rational functions(just need explanation)
- kevinlikesphysics
- · Replies 2 ·
How far does the box travel along the incline before coming to rest?
- prettynerd
- · Replies 7 ·
What Are the Practical Uses of LRC Circuits in Technology?
- tin llenaresas
- · Replies 1 ·
Why Does Torque Calculation Assume Mass Concentrated at the Center of Mass?
- xailer
- · Replies 5 ·
Projectile motion and central force problems from practice sheet
- fahd
- · Replies 2 ·
How Can I Simplify Trigonometric Expressions Using Euler's Formula?
- mewmew
- · Replies 3 ·
What is the importance of scaling in the N-S equations?
- hanson
- · Replies 2 ·
Why does d/dx[r(t) · r(t)] equal 2r'(t) · r(t)?
- rad0786
- · Replies 4 ·
Implicit differentiation of xcosy+ycosx=1
- CACain
- · Replies 2 ·
Good problem on motion in one dimension
- prathyush.kulkarni
- · Replies 1 ·
Solving Vector Equations: Find Value of h
- tandoorichicken
- · Replies 2 ·
Current and Resistance (with a flashback to work I think)
- Mjannell
- · Replies 2 ·
Solving log_2(x) + log_4(x) = 2
- NewScientist
- · Replies 13 ·
Partial Derivatives (Uncertainty)
- niteshadw
- · Replies 2 ·
Solving Probability Problem: 100 Diodes, 5% Broken
- vabamyyr
- · Replies 2 ·
Factoring Problems: Solving for Inverse-Laplace Transformation
- EvLer
- · Replies 4 ·
How to Calculate Tension in Cable for Stopping a Moving Truck
- DKTKD
- · Replies 8 ·
Master the Chain Rule with These Easy Steps - Check Your Work for Accuracy!
- Whatupdoc
- · Replies 1 ·
Level curve of f(x,y) = (x² + y²)e^(xy) through P(1,0)
- SigmaCrisis
- · Replies 2 ·
Acceleration of point mass in wave reflection and transmission
- ruku320
- · Replies 1 ·
L'Hospital Q: Is it Valid for "Regular" Limits?
- EvLer
- · Replies 2 ·
Distance fallen with velocity-squared drag from v0 to v1
- qqchico
- · Replies 1 ·
Finding the radius of a gold sphere with surface gravity of 9.87 m/s²
- jakeowens
- · Replies 7 ·
Jet speed with headwind and tailwind, and heat transfer equation
- firemouse
- · Replies 1 ·
Integral of $\frac{1}{x\sqrt{4x + 1}}$: Solutions and Explanations
- PhysicsinCalifornia
- · Replies 5 ·
Universal Gravitation questions
- jshaner858
- · Replies 3 ·
Why does a wagon fall backward when pushed, and other inertia problems?
- jrd007
- · Replies 12 ·
Solving for a Hypotenuse: A Frustrating Problem for Morgan
- rockmorg
- · Replies 5 ·
Which Method Keeps Bob on the Log: Catching or Deflecting the Ball?
- willworkforfood
- · Replies 1 ·
Is raising indices on the metric tensor the same as matrix inversion?
- arunma
- · Replies 3 ·
Programming TI-83 for Reimann Sums: Y1=\sqrt{1+sin^3}
- Echo 6 Sierra
- · Replies 1 ·
Solving for initial velocity in projectile motion equation
- bmore007
- · Replies 13 ·
Proving O(n) orthogonal matrices form a group
- Pearce_09
- · Replies 4 ·
Calculating Theta for Suspended Mass in Circle
- Punchlinegirl
- · Replies 1 ·
Bullet hitting spring block, pendulum motion, and vibrating string frequencies
- Ryan231
- · Replies 6 ·
Finding equilibrium separation for diatomic molecule with U = A/r^12 - B/r^6
- Ginny Mac
- · Replies 5 ·
What is the minimum stopping distance
- emily69_420
- · Replies 5 ·
How Will Lower Liquid Helium Costs Impact Superconductor Development?
- gapgirl1010
- · Replies 7 ·
Astrophysics - Can there be a contact binary from white dwarfs
- jaidon
- · Replies 1 ·
What Went Wrong in Calculating the Volume of Gas from Decomposition?
- Pengwuino
- · Replies 7 ·
Phys/trig Q?s why are they wrong
- kevinlikesphysics
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How can I use the Excel solver to solve systems of equations?
- rei1574
- · Replies 11 ·
What is the acceleration of the 1200 kg boat?
- chriszollman
- · Replies 4 ·
How Is Time Calculated for a Ball Thrown Upwards?
- nk12
- · Replies 1 ·
Why Doesn't My Implicit Differentiation Match the Book's Answer?
- Aresius
- · Replies 3 ·
Very easy mechanics problem - am i making a stupid mistake?
- Ara macao
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Understanding Vector Subspaces in R^2
- mpm
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Calculate the resistance, then find the current at the new voltage
- srhly
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How Do You Evaluate dw/dt at t=0 Using the Chain Rule Results?
- Whatupdoc
- · Replies 2 ·
Helicopter Velocity in Relation to Ground with Wind
- F.B
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Why is the matrix of a reflection in R^n symmetric?
- Pearce_09
- · Replies 2 ·
Calculating Projectile Displacement: Step-by-Step Guide | Help Needed
- plane
- · Replies 2 ·
Proving Vector Space Identity: I-T Bijectivity
- Pearce_09
- · Replies 3 ·
What is the Net Force on Charges in a Line?
- Kali8972
- · Replies 3 ·
Proof of expected value expression
- grimster
- · Replies 1 ·
Find Min Horizontal Force to Keep Small Cube from Falling
- PhunWithPhysics
- · Replies 7 ·
Calculating the Constant k in a Spring Pendulum System
- brandon26
- · Replies 1 ·
Finding the bond angle for 4 equidistant points on a sphere
- amcavoy
- · Replies 8 ·
Physics Problem Help: Chin-Up Force & Velocity
- kavdhaliwal
- · Replies 2 ·
Why isn't this working? a simple inverse of a 2x2 matrix
- mr_coffee
- · Replies 4 ·