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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How High Will a Stone Rise If Thrown with 9.8 Joules of Kinetic Energy?
- Physicist7
- · Replies 5 ·
Calculating Force and Time for Stopping a Moving Car
- VinnyCee
- · Replies 25 ·
Limit of recursive sequence a_n = (a_{n-1} + a_{n-2})/2
- DivGradCurl
- · Replies 5 ·
Relative Motion in vectors form
- garytse86
- · Replies 6 ·
Find length and width of Cheerios box given volume
- Patsmatrix
- · Replies 4 ·
Do A and Uinv(A)U Share Eigenvalues?
- Ed Quanta
- · Replies 5 ·
Is the value of n_0 in complexity questions precise or flexible?
- EvLer
- · Replies 2 ·
Acceleration on the surface of a sphere
- freddy
- · Replies 2 ·
Electrostatics problem, kinda confusing
- djlightsout06
- · Replies 3 ·
Problem on finding maximum torque on a simple loop
- patlai
- · Replies 3 ·
Volume expansion problem, is my concept wrong?
- nemzy
- · Replies 3 ·
Coefficient of kinetic friction?
- doxigywlz
- · Replies 4 ·
What unit is (kg)(m/s^2) and does 1 cm^3 equal 1 mL?
- nemzy
- · Replies 15 ·
Monkey and sled sliding up incline with friction
- doxigywlz
- · Replies 16 ·
Does density change with temperature and how would you calculate it?
- nemzy
- · Replies 5 ·
Overcoming Exam Anxiety: What Can I Do?
- ambuj123
- · Replies 2 ·
A Proof on hypergeometric distribution
- irony of truth
- · Replies 2 ·
Total force on a 310 kg roller coaster car on a horizontal 40 m curve at 18 m/s
- Agahnim
- · Replies 6 ·
Uniform Circular Motion: Finding Velocity in Unit-Vector Notation
- HeRo
- · Replies 2 ·
How do I solve for gravitational force and tension in physics?
- matchboxdude
- · Replies 6 ·
Time for car to pull alongside another car 100 m ahead
- motionman04
- · Replies 5 ·
Car acceleration to meet at exit 1.8 km away and bus catch-up problem
- Kadaj
- · Replies 2 ·
Conservation of Energy - not expected result
- unr_
- · Replies 2 ·
Angle of Vectors with X, Y, and Z Axis
- lmf22
- · Replies 4 ·
Total force on a roller coaster car on a horizontal curve
- Agahnim
- · Replies 3 ·
Why Does a Rock Stay on a Table?
- Dooga Blackrazor
- · Replies 3 ·
Cooling a Room with 8.4*10^6J/h: How Long?
- Kelju Ivan
- · Replies 2 ·
Can AB be zero while BA is nonzero for matrices A and B?
- vsage
- · Replies 2 ·
How do I apply the product and chain rule to this equation?
- Spectre32
- · Replies 8 ·
Proving Continuity of Real-Valued Functions Using G_delta Sets
- fourier jr
- · Replies 4 ·
How to find the acceleration of a random planet
- justinbaker
- · Replies 3 ·
Why Does Adding Mass to the Ends of a Chain Affect Its Slipping Time?
- no_brainer
- · Replies 2 ·
Gravitational Pull and Acceleration: Earth vs. Moon
- justinbaker
- · Replies 3 ·
Line of infinite charge and a gaussian sphere
- stunner5000pt
- · Replies 2 ·
Calculation of Excitation potentialfrom I-V curve
- JamesJames
- · Replies 2 ·
What is the chain's displacement?
- physicsss
- · Replies 4 ·
Conservation of Energy airplane pilot
- physicsss
- · Replies 10 ·
How Do Torque and Work Relate in Physical Systems?
- MLoren
- · Replies 3 ·
Square inscribed in equilateral triangle with 6 cm sides
- uranium_235
- · Replies 3 ·
Calculate Force on 1.6 kg Ball at Uppermost Point
- buffgilville
- · Replies 2 ·
Pulling a Thread Attached to Weight
- Soaring Crane
- · Replies 3 ·
Why Do Line and Surface Integrals Yield the Same Result for a Triangle Path?
- galipop
- · Replies 17 ·
Solving Orthogonal Trajectories of a Family of Curves
- Maxwell
- · Replies 2 ·
Determine velocity of a mass suspended from a stretched spring
- physicsss
- · Replies 6 ·
Limit of (x^2-6x+1)^(1/2)-x: Solve with Steps
- sinas
- · Replies 3 ·
Integrating through partial fractions
- ACLerok
- · Replies 9 ·
Force needed to keep object from accelerating problem
- joej
- · Replies 4 ·
Damn Gauss law is so confusing
- stunner5000pt
- · Replies 2 ·
Center of Gravity, objects in eqm
- Buddha
- · Replies 7 ·
How Does Temperature Affect Balloon Volume According to Charles' Law?
- bigDee
- · Replies 2 ·
Electric field due to concentric cylinders
- stunner5000pt
- · Replies 4 ·
Electric field strength due to two point charges
- stunner5000pt
- · Replies 2 ·
Converting 20 slugs to Newtons using force conversion
- Mitchell
- · Replies 5 ·
PING OUT "Let Vector V = 36 i + 24 j - 57 k"
- physicsss
- · Replies 17 ·
Calculate Mass Acceleration with Spring Length Change of 0.02 m
- buffgilville
- · Replies 11 ·
Convert 33 Rev/min to Velocity (m/sec): Radius 1.47m
- buffgilville
- · Replies 4 ·
How Can You Prove Linear Dependence in Vector Sets?
- vsage
- · Replies 2 ·
Egg Drop Device Acceleration Question
- Squiller
- · Replies 4 ·
Solving Vector Addition Problems
- charvonne coates
- · Replies 2 ·
What are the Forces Acting on a Block Pushed Against a Wall with Friction?
- AtlBraves
- · Replies 3 ·
Y=tanx y'=sec^2x does y' also equal to (secx)^2 ?
- UrbanXrisis
- · Replies 19 ·
How Far and How Fast Does the 25 kg Block Move?
- cdirk11
- · Replies 2 ·
Ball thrown upward with initial velocity 80 m/s
- sb_4000
- · Replies 10 ·
Electric field question
- stunner5000pt
- · Replies 2 ·
Partial Derivatives of Z = (x+y) Sec(xy)
- Spectre32
- · Replies 5 ·
Instantaneous velocity and acceleration
- sb_4000
- · Replies 21 ·
Atwood machine with friction and projectile from tower
- sb_4000
- · Replies 48 ·
Work done pulling a string through a hole on a rotating particle
- matpo39
- · Replies 3 ·
Proving intersection of nested closed sets is nonempty using Heine-Borel
- fourier jr
- · Replies 2 ·
Find the frictional force acting on the block
- Graif
- · Replies 2 ·
How Does Magnetostatics Explain Zero Divergence and Vector Potentials?
- _Syzygy_
- · Replies 2 ·
LIMITS - Multi-variable calculus
- Odyssey
- · Replies 7 ·
How Do Proton and Electron Path Radii Compare in a Magnetic Field?
- Jack16
- · Replies 4 ·
Balancing Ca₃(PO₄)₂ + H₂SO₄ → CaSO₄ + H₃PO₄
- Math Is Hard
- · Replies 17 ·
How Do Amusement Rides Apply Physics Principles?
- Shay10825
- · Replies 17 ·
What are the practical applications of growth and decay functions?
- Poweranimals
- · Replies 10 ·
Proving Linear Dependence in Pm(F) Using Polynomials with p_j(2)=0
- gravenewworld
- · Replies 5 ·
Calculate the coefficient of kinetic friction for the mass on the surface
- Angeluzmaia
- · Replies 9 ·
What Is the Correct Formula for a Skier's Stopping Distance on a Slope?
- Lannie
- · Replies 5 ·
Find Equilibrium with Electron Field on Figure 22-11
- rishid
- · Replies 5 ·
What is the critical value of mu_s in this static friction problem?
- Lalo1985
- · Replies 2 ·
Solving Velocity Problems: Initial Velocity 80 m/s
- sb_4000
- · Replies 3 ·
Finding the Limit of $\frac {\sqrt{x} - x^2} {1 - \sqrt{x}}$
- check
- · Replies 2 ·
Need to determine an angle depending on acceleration
- mad
- · Replies 6 ·
Arrow speed from spring constant and draw length
- Hughey85
- · Replies 8 ·
Object on Incline: Calculate Time of Return at 60 Degrees, 35m/s
- Format
- · Replies 28 ·
Finding friction force on a block pushed at 40° angle
- AtlBraves
- · Replies 7 ·
How Do You Calculate the Angle of a String in Circular Motion?
- songokou77
- · Replies 2 ·
Find the stopping distance of that same car
- songokou77
- · Replies 2 ·
How Do You Calculate the Deviation of an Airplane's Course Due to Wind?
- krypt0nite
- · Replies 5 ·
How Does Gauss's Law Change in Dielectric Materials?
- AXIS
- · Replies 6 ·
Limit of (x²+y²-z²)/(x²+y²+z²) as (x,y,z)→(0,0,0)
- Odyssey
- · Replies 5 ·
Force vs Displacement: Constant Force Experiment Results
- UrbanXrisis
- · Replies 4 ·
Is it possible to delete a post once it has been submitted?
- Alkatran
- · Replies 2 ·
Gravity's effect on a cart sliding down an incline
- deanchhsw
- · Replies 8 ·
Understanding Statics: Examples in Computer and Electrical Engineering Problems
- songokou77
- · Replies 2 ·
Minimum breaking tension for a rope swing over a creek
- radiobear
- · Replies 2 ·
Simple graphing that will take a second
- ACLerok
- · Replies 3 ·
Unveiled: A Revolutionary Safety Air-Brake for Elevators
- WillParadigm
- · Replies 5 ·
Tension in cable connecting two blocks with pulley and friction
- pinky2468
- · Replies 11 ·