Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Finding the mass of a meter stick using a lever and torque
- deuterium
- · Replies 2 ·
How Do You Calculate Power and Work in Physics Problems?
- ACLerok
- · Replies 5 ·
How would you solve f(t)=1+t with -pi<x<pi?
- hawaiidude
- · Replies 2 ·
Projectile Motion Problem: Bowling Ball Drop and Car Distance Calculation
- nummytreat05
- · Replies 2 ·
How Much Force to Overcome Static Friction and Move a Sled?
- literati
- · Replies 3 ·
Projectile motion problems with significant figures
- nummytreat05
- · Replies 2 ·
Electric potential from non-uniform charge distribution on rod
- discoverer02
- · Replies 8 ·
A football punter accelerates a 0.56kg football
- mustang
- · Replies 2 ·
Help checking force and acceleration problems
- Astronomer107
- · Replies 5 ·
What is the largest number of pieces you can get by cutting a pizza
- wubie
- · Replies 2 ·
Determine the angle between the inclined plane and the horizontal
- Gtseviper
- · Replies 2 ·
Background Radiation+empirical and molecular formula
- Yaqout
- · Replies 2 ·
Nonconservative Forces (conceptual)
- Blade
- · Replies 3 ·
What Formulas Do You Use to Solve These Tricky Physics Problems?
- stitch12
- · Replies 7 ·
A compact car, mass of 725 kg, is moving at 100 km.hr.
- kath102245
- · Replies 5 ·
Sun appears higher at sunset and light refraction through oil and water
- FestiveF
- · Replies 2 ·
Finding a physics homework book to overcome a poor instructor
- lurch0038
- · Replies 2 ·
Gravitation n Projectile Motion
- Muhammad
- · Replies 3 ·
How can you accurately measure your weight on Jupiter without a solid surface?
- Math Is Hard
- · Replies 2 ·
What Is the Triple Point Temperature Based on Given Thermodynamic Equations?
- whitewanderer
- · Replies 4 ·
Solving the Ramp Problem: Finding Time to Stop Sliding on a Horizontal Surface
- Ninja_P
- · Replies 2 ·
Challenging physics problems uniform circular motion, centripetal force
- adeel
- · Replies 2 ·
Extremely Confusing Energy Question - Involves Springs
- Foon
- · Replies 2 ·
Calculating Car Speed Based on Skid Mark Distance and Friction Coefficient
- FLANKER
- · Replies 6 ·
How Long Does It Take for a Phonograph Record to Stop Spinning?
- nautica
- · Replies 2 ·
How Do You Solve Accelerated Linear Motion Problems in Physics?
- mcintyre_ie
- · Replies 3 ·
Crate Freefall Calculation: Air Drag at 2,000m Altitude
- espo
- · Replies 2 ·
How Hard Must a Window Washer Pull to Raise Herself at Constant Speed?
- zm87
- · Replies 2 ·
Acceleration of a car that goes from rest to 69 km h in 9 seconds
- espo
- · Replies 2 ·
Air resistance of someone falling out of an airplane
- espo
- · Replies 2 ·
Initial vertical component of velocity is 61 m/s
- espo
- · Replies 2 ·
Newtons does a 40 kg bag of stones weigh
- espo
- · Replies 2 ·
How Do You Calculate the Resultant Force of Two Perpendicular Forces?
- espo
- · Replies 2 ·
Is 100N the Correct Calculation for Net Force Given These Directions?
- espo
- · Replies 2 ·
An apple falls from a tree and 0.5 second later hits the ground
- espo
- · Replies 2 ·
Problem about Einstein's postulate
- silver
- · Replies 5 ·
What was the speed of the bullet at impact?
- stitch12
- · Replies 2 ·
Solving Gauss' Law Problem with J.J. Thomson Model of Hydrogen Atom
- discoverer02
- · Replies 3 ·
How High Will Tarzan Swing on the Vine?
- LiquidIce
- · Replies 5 ·
This is actually a college level question.
- ACLerok
- · Replies 3 ·
Focal length of converging lenses using lens formula
- Xafron
- · Replies 7 ·
What prevents a star from collapsing under its own gravitational attraction?
- nlink1979
- · Replies 1 ·
Which Newton's law does a=[(m1-m2)g]/[m1+m2] come from
- marshall4
- · Replies 3 ·
Calculating Tarzan's Height on a Vine at 8.0 m/s - Grade 11 Question
- LiquidIce
- · Replies 4 ·
Solving a Spring Constant Problem for Projectile Motion
- outerrim
- · Replies 6 ·
Write an expression for the Optical path length
- goodo
- · Replies 2 ·
Using ray transfer matrices for a scratch on a glass sphere
- frankR
- · Replies 2 ·
1350Kg tuned up Civic moving at 15m/s hits a 1450Kg car moving at 12m/s
- DrVirus
- · Replies 5 ·
One Last Problem, also related to energy
- Antepolleo
- · Replies 1 ·
Find the speed of the ball after the ball leaves the bat
- Le
- · Replies 3 ·
Centripetal acceleration of helicopter blade at 300 rpm
- nautica
- · Replies 2 ·
Conservation of angular momemtum
- nautica
- · Replies 2 ·
Calculating Energy Requirements for Human Activity on Inclined Surfaces
- thegame
- · Replies 2 ·
Do Wave Functions in Different Positions Form an Orthonormal Set?
- einai
- · Replies 9 ·
How will the wind affect the plane's course and speed?
- cowgiljl
- · Replies 3 ·
Permutations with restrictions: "collect" letters and couples at a table
- adeel
- · Replies 3 ·
Physics Problem: Finding Final Velocity and Distance Traveled on a Ramp
- aerichk
- · Replies 2 ·
Rate constant of enzymatic reaction
- schordinger
- · Replies 1 ·
Projectile fired at 60° from 49 m cliff
- cowgiljl
- · Replies 2 ·
1000 kg boat slowing down with velocity-dependent friction
- Tony Zalles
- · Replies 2 ·
Calculating Acceleration and Velocity in a Pulley System: A Physics Problem
- mcintyre_ie
- · Replies 5 ·
Calculate the linear acceleration of a car
- nautica
- · Replies 2 ·
C++ file input causing memory exception errors
- enigma
- · Replies 4 ·
Do Heavy or Light Elements Better Stop Slow Neutrons?
- kylemadigan
- · Replies 2 ·
Finding Displacement on a Velocity Time Graph
- JDK
- · Replies 4 ·
Rotational dynamics of platform
- rayf01
- · Replies 4 ·
How can E=mc^2 be used to calculate the radiation from a nuclear blast?
- nlink1979
- · Replies 5 ·
Rotational Dynamics] Quadriceps Muscle Force Calculation
- Nb
- · Replies 1 ·
Calculate the speed when the box reaches the bottom of the incline
- cowgiljl
- · Replies 2 ·
Finding resultant magnitude and direction of two forces
- cowgiljl
- · Replies 3 ·
Hello, my name is matt and i have a problem.
- flutieflakes
- · Replies 4 ·
How Many Campers Are Needed to Find the Correct Path?
- wubie
- · Replies 1 ·
How to Calculate Distance Traveled in a Momentum Problem with Friction
- Spectre32
- · Replies 3 ·
Maximizing Tension in Vertical Circular Motion with Work-Energy Theorem
- Juntao
- · Replies 6 ·
Proving the vertex x-coordinate formula x = -b/2a
- daodude1987
- · Replies 2 ·
What is the constant angular acceleration of a rotating wheel?
- Nanabit
- · Replies 3 ·
Work, Energy, and the CWE Theorem
- FrostScYthe
- · Replies 2 ·
How do I solve for theta in this friction-less pulley problem?
- AaronP85
- · Replies 4 ·
Kepler's third law and multiple formulas
- stressedout
- · Replies 2 ·
Solve RLC Series Circuit: Find Vrms, Power Factor & Draw Phasor
- discoverer02
- · Replies 2 ·
How is the Sine Series Derived for Piecewise Functions?
- hawaiidude
- · Replies 2 ·
Finding initial velocity and max height from flight time
- daodude1987
- · Replies 2 ·
Solving Dynamics Problems with Forces, Work, and Energy
- Pepsi
- · Replies 3 ·
Calculating Forces: Preventing Masses from Falling on Frictionless Floor
- mikeydsiu97
- · Replies 3 ·
Why Can't a Weight Lifter Float in Air?
- parthivsmehta
- · Replies 2 ·
Mercury thermometer temperature problem
- robgb
- · Replies 6 ·
Positron in uniform magnetic field at 65.5° angle
- JaeSun
- · Replies 5 ·
A 0.50 kg object is at rest. A 3.29 N force
- mustang
- · Replies 4 ·
How Is Internal Energy Affected by Friction in Physics Problems?
- Antepolleo
- · Replies 5 ·
What angle does the ramp make with the ground Static friction
- ryan
- · Replies 9 ·
Help with Guitar HW: Standing Waves & Frequency Calcs
- Acidvoodoo
- · Replies 2 ·
Where Did the .25J of Energy Go?
- PS
- · Replies 2 ·
Calculate the temperature measured on the resistance scale
- robgb
- · Replies 1 ·
Solving Incline Plane Problem: Find Min Acceleration
- J.T.
- · Replies 3 ·
Solved: Forces on a Bike: Calculating Friction and Total Force
- Rockdog
- · Replies 2 ·
How to make a soda can move 10 feet with rubber bands and batteries
- profkth
- · Replies 4 ·
Speakers sound level at a certain point.
- Lipd
- · Replies 2 ·
Projectile Stone Off Cliff question
- badboyben03
- · Replies 5 ·
Kinetic Energy Conservation in an Explosive System
- walker
- · Replies 5 ·