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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Checking calculus work: integrals, centroids, volumes and work
- Shay10825
- · Replies 9 ·
How Do You Implement a Recursive Function to Calculate Powers in C++?
- heavyc
- · Replies 6 ·
Double checking charges and electrical field problems
- mr_coffee
- · Replies 16 ·
Baseball horizontal distance climbing vs descending with air drag
- BravestIntent
- · Replies 1 ·
How can I solve this problem?
- belleamie
- · Replies 7 ·
Calculating Average Speed: A Problem-Solving Dilemma
- physicsvirgin
- · Replies 4 ·
How to simplify sqrt(a² - a Δd)
- IB
- · Replies 7 ·
How Do You Compute Derivatives in Spherical Coordinates Using the Chain Rule?
- Tony11235
- · Replies 1 ·
What are the Electric Field Lines and Flux in Coaxial Cables?
- ussrasu
- · Replies 3 ·
Charge problem, used a quadtratic equation, can you see if i did it right?
- mr_coffee
- · Replies 7 ·
How Do I Tackle These Classical Mechanics Review Problems?
- belleamie
- · Replies 4 ·
What are the particle's position and velocity
- brad sue
- · Replies 4 ·
Evaluating the Second Term of Integration by Parts for $\delta (x)$
- Reshma
- · Replies 2 ·
Formula for the inverse problem
- danielI
- · Replies 6 ·
Proving Energy of a Signal: g(t)
- Infidel22
- · Replies 1 ·
How Do You Solve Vector Problems in Triangle Geometry?
- dagg3r
- · Replies 1 ·
Train deceleration and acceleration, truck braking, earthquake waves
- BriannaUND
- · Replies 3 ·
What Are the Correct Answers for These Physics Questions?
- allstar1
- · Replies 4 ·
Simple Harmonic Motion and time period
- dpsguy
- · Replies 4 ·
System of Equations Mechanics problem
- Punchlinegirl
- · Replies 3 ·
Mixing eye drops with different active ingredient percentages
- Zed
- · Replies 5 ·
What prevents jet fighter pilots from blacking out
- king_2005
- · Replies 1 ·
How Much Ice Melts When a Skater Stops?
- physicsss
- · Replies 3 ·
What is the relationship between electrical and gravitational potential energy?
- ussrasu
- · Replies 4 ·
How Does a Man's Walking Speed Affect His Shadow's Length on a Building Wall?
- whkoh
- · Replies 2 ·
Find the resultant vector made by 115 km at 80 degrees and 85 km at 15 degrees
- KatieJo
- · Replies 2 ·
Calculating Work to Stop a 1000 kg Car at 100 km/hr
- rueberry
- · Replies 3 ·
Qm, infinite sq well doubles in width
- t1mbro
- · Replies 4 ·
Evaluating three integrals with repeated poles and sinc squared
- jcain6
- · Replies 5 ·
Can you assist with solving an infinite resistor network problem?
- recon
- · Replies 2 ·
Solving the Inequality Problem with n, 3^n > n^3
- loli12
- · Replies 5 ·
Kirchoff's Current Law - Negative Current Value?
- waterchan
- · Replies 1 ·
Solve for M and P using phasor method and geometry
- yoyo
- · Replies 1 ·
Is the Potential in Quantum Hamiltonian II Always Real?
- eljose
- · Replies 1 ·
Time dilation with spacecraft moving at 0.6c and car trip
- schattenjaeger
- · Replies 5 ·
Can the KE of a car be converted into work by stopping it at 100 km/hr?
- rueberry
- · Replies 3 ·
How Many Ways Can You Arrange a Pharmaceutical Board and Solve Math Problems?
- sjaguar13
- · Replies 1 ·
How Do I Integrate sqrt(4x) + sqrt(4x) on the Interval 0 to 1?
- MathGnome
- · Replies 2 ·
What is the correct way to integrate sqrt(4x) + sqrt(4x) on the interval 0 to 1?
- MathGnome
- · Replies 4 ·
Finding stress in member BC of a truss
- Pepsi24chevy
- · Replies 1 ·
What is the Electric Field Required for Equilibrium of Charged Spheres?
- evangelic04
- · Replies 2 ·
Prove that if A is nonsingular then (A^T)^-1 = (A^-1)^T
- mpm
- · Replies 1 ·
Axially loaded structural member problem
- Pepsi24chevy
- · Replies 1 ·
Meter stick at 60° to velocity: length contraction at 0.8c
- schattenjaeger
- · Replies 6 ·
Answer Voltage of Disconnected Capacitor w/ Paraffin
- jena
- · Replies 5 ·
Projectory: Super Hard Apparently From The Military Gah Hard
- dagg3r
- · Replies 1 ·
Solving a Word Problem: Preparing Special Eye Drops
- Zed
- · Replies 1 ·
Finding the limit of 3sin(4x)/sin(3x) as x approaches 0
- zell_D
- · Replies 20 ·
Calculating the Height of a Stadium Using Ball Drop: 2.29 Seconds & Speed
- thschica
- · Replies 14 ·
What does Metric Prefix mean?
- IB
- · Replies 2 ·
Solve differential equation with variation of parameters
- plucker_08
- · Replies 1 ·
Factoring a Quadratic Expression
- aricho
- · Replies 7 ·
Solving an Initial Speed Physics Problem with a Baseball Thrown from the Street
- thschica
- · Replies 6 ·
Water balloon drop and jet launch kinematics problems
- BriannaUND
- · Replies 2 ·
Significant figures in a multi-step calculation with mixed precision
- parwana
- · Replies 3 ·
Average acceleration of driver in car-tree collision
- tak181
- · Replies 2 ·
What Minimum Deceleration Is Required for a Car to Stop on a 35 Meter Shoulder?
- Janzen
- · Replies 2 ·
Finding initial speed of egg thrown upward from a building
- clair_a_net
- · Replies 1 ·
Finding density of turpentine from an aluminium cylinder
- frozen7
- · Replies 2 ·
Fun, but difficult mechanics question
- wd4gdz
- · Replies 4 ·
Self-powered car from everyday materials for physics assignment
- gjensen01
- · Replies 9 ·
Electric Field at center of triangle
- ashkash
- · Replies 5 ·
Modeling Mosquito Population Growth and Predation
- FrogPad
- · Replies 2 ·
What Is the Spider's Average Speed and Magnitude of Average Velocity?
- BriannaUND
- · Replies 3 ·
Understanding Levers to Mechanical Advantage and Force Distribution
- scientist
- · Replies 19 ·
Force in a potential field V(x,y,z)
- amb123
- · Replies 2 ·
Summer assignment: unit vectors, integrals, logarithms, and vector angles
- lynn32
- · Replies 10 ·
Calculating Net Force on Charged Particles in an Equilateral Triangle
- ranger
- · Replies 5 ·
Unit vector from P1 to P2 and parallelogram diagonals
- sony
- · Replies 6 ·
What Is the Speed of a Wagon After Ascending a Hill?
- TJ the Tornado
- · Replies 2 ·
Divergence Theorem: Volume and Surface Integral Solutions
- Phymath
- · Replies 1 ·
How Does the Right Hand Rule Determine Magnetic Force Direction?
- dagg3r
- · Replies 1 ·
Find Center of Gravity of Person Using Torque
- CACain
- · Replies 1 ·
Finding the angle between two forces of 14lb and 30lb with a 20lb resultant
- dandogg
- · Replies 4 ·
Solve Parabola Problem for Suspension Bridge: 200ft Long, 50ft High
- Gill
- · Replies 2 ·
NSolving Friction Problem: m1, m2, 50N, .1 Coeff.
- TJ the Tornado
- · Replies 2 ·
Finding Probability of Lifetime for Light Bulbs Using Normal Distribution Table
- ~angel~
- · Replies 3 ·
How to solve Laplace's equation in three dimensions
- danai_pa
- · Replies 5 ·
Solving a Homogeneous Linear Equation for x>0
- asdf1
- · Replies 4 ·
Separate Ethanol from Water: Hydrogen Bonding
- samaank
- · Replies 4 ·
Sorting arrays where each element has at most k larger predecessors
- kioria
- · Replies 6 ·
What are the tensions in BC and BD?
- Uninspired
- · Replies 2 ·
How Do Electric Fields Behave at the Center of a Charged Triangle?
- beatbama85
- · Replies 1 ·
What Is the Intersection of Subspaces U and V in R^3?
- loli12
- · Replies 1 ·
Question on homogeneous linear systems
- mpm
- · Replies 4 ·
What Is the Correct Value of q in Coulomb's Law Problem?
- jenduncan
- · Replies 1 ·
Finding Spheres Tangent to Three Coordinate Planes: A Calc 3 Problem
- meadow
- · Replies 2 ·
Does triangle inequality hold for summations and sup?
- gravenewworld
- · Replies 3 ·
Can R^2 Represent Planes Other Than the xy Plane in R^3?
- loli12
- · Replies 1 ·
How Do You Calculate the Electrical Properties of a Cell Membrane?
- ussrasu
- · Replies 1 ·
How Does Phase Difference Influence the Amplitude of Combined Wave Functions?
- ColdFusion85
- · Replies 1 ·
Limits Question: Why Does f(-6) = d.n.e?
- Soaring Crane
- · Replies 3 ·
Calculating Balloon Volume Change with Altitude
- physicsss
- · Replies 1 ·
Two canoeists paddling to an island at different starting points
- wr1015
- · Replies 6 ·
Solving Collision Between 120kg Tackler and 75kg Halfback
- rueberry
- · Replies 1 ·
Plotting engineering stress-strain diagram with two strain scales
- Physics_wiz
- · Replies 1 ·
Calculating electric field from radiant flux density
- eep
- · Replies 1 ·
How to Calculate Forces on an Electron at the Equator?
- Pepsi24chevy
- · Replies 1 ·
Calculating Centrifugal Force for 300KG Object in 5m Radius Circle
- golith
- · Replies 10 ·
Calculating Displacement: X Component Error
- AdnamaLeigh
- · Replies 2 ·