Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Wavelength of a wave from distance between compressions or separation
- msimard8
- · Replies 4 ·
Rigid Bodies and Free Body Diagrams (w pulley)
- moo5003
- · Replies 1 ·
2 Cars Colliding with same mass
- YinHoNg
- · Replies 1 ·
What is the outcome of a collision between two cars at constant speed?
- YinHoNg
- · Replies 4 ·
Calculating Efficiency of a Coal Fired Plant - 700 MW Electrical Power
- saved56
- · Replies 1 ·
Solving the Hardest Thermal Process Question: Find W/Q Ratio
- Dooh
- · Replies 1 ·
Challenging Physics Question (Mass moment of inertia, pendulum)
- patrat
- · Replies 2 ·
What Force Does a Tractor Exert to Tow a Trailer Up an Incline?
- kayteedee
- · Replies 8 ·
Solve Hard Thermodynamics Q: Find Water W/Q Ratio
- Dooh
- · Replies 1 ·
Beat frequency of Two in-phase loudspeakers
- frozen7
- · Replies 3 ·
Height, hangtime, and range during frictionless freefall.
- pwoodruff89
- · Replies 11 ·
How Does the Biot-Savart Law Apply to an Electron Orbiting a Proton?
- dekoi
- · Replies 1 ·
Speed of object falling from pulley
- suspenc3
- · Replies 6 ·
Calculating Initial Height for Marble to Roll Along Loop-the-Loop Track
- suspenc3
- · Replies 2 ·
Time that an object is in the air
- Kandy
- · Replies 6 ·
What are the first 3 overtones for a pipe open at both ends?
- Pearce_09
- · Replies 1 ·
Rigid Bodies including topics of power and torque.
- moo5003
- · Replies 4 ·
How Can Angular Velocity Be Expressed as a Function of Theta for a Falling Rod?
- moo5003
- · Replies 2 ·
What is the final temperature of a glass mug filled with hot water?
- jakeowens
- · Replies 3 ·
Angular acceleration of a wheel
- suspenc3
- · Replies 8 ·
Solving for Speed, Height of Boy on Water Slide
- hannsparks
- · Replies 38 ·
Anomalous first point in time vs height graph of falling mass
- Harvey
- · Replies 3 ·
Some more electromagnetism questions (ac generators)
- KatieKangaroo
- · Replies 1 ·
Find the total outward force exerted on the vertical wall
- SoccaCrazy24
- · Replies 8 ·
How Do You Convert RPM to Radians Per Second for a Flywheel?
- suspenc3
- · Replies 11 ·
Simple angular momentum question
- itzela
- · Replies 2 ·
A question for which I *should* know the answer
- ptabor
- · Replies 8 ·
Coefficient of static friction
- hannsparks
- · Replies 5 ·
Pressure inside and outside water in a Bernoulli problem
- willworkforfood
- · Replies 2 ·
Time for a sliding ball to reach rolling without slipping
- Päällikkö
- · Replies 10 ·
Calculating Heat Energy in a Refrigerator - Solving for Qh and Qc
- dekoi
- · Replies 8 ·
My teacher hasnt been in and Im trying to self teach this topic. Can
- KatieKangaroo
- · Replies 1 ·
A bead in circular motion in space
- Lisa...
- · Replies 1 ·
Finding capacitance when parallel cap increases current by 0.23 A
- fizixx
- · Replies 11 ·
Is work relative if it depends on relative motion?
- teken894
- · Replies 8 ·
Circular Motion and Displacement
- brad sue
- · Replies 3 ·
Verification of the kinematics relationship
- alex_boothby
- · Replies 2 ·
How Does a Bullet Passing Through a Block Affect Speed and Energy?
- Memphis213
- · Replies 1 ·
Mars Surface Curvature: 2m/3600m
- touqra
- · Replies 2 ·
Escape Speed Calculation for Identical Planets
- zhen
- · Replies 2 ·
Force needed to pull the string
- anand
- · Replies 1 ·
How can an athlete stop twisting in mid-air using angular momentum?
- Winner
- · Replies 10 ·
Use mercury barometer to fing height of building
- stuplato
- · Replies 1 ·
Finding food calories used to climb a rope
- KatParker35
- · Replies 4 ·
What is the acceleration of the balloon and instruments?
- vinny380
- · Replies 1 ·
How to Calculate Positions of Observers Using Lorentz Transformation
- mrjeffy321
- · Replies 3 ·
Converting Planck's Constant for Energy Unit Matching
- Erwin Schrodinger
- · Replies 2 ·
Calcuating the integral E.ds for the paths given, what did i do wrong?
- mr_coffee
- · Replies 5 ·
What would an Ideal Volt Meter measure if
- tmb
- · Replies 5 ·
How Do You Derive the Moment of Inertia for a Film Projection Wheel with Holes?
- leospyder
- · Replies 8 ·
Question involving Uncertainty Principle.
- brat-sampson
- · Replies 2 ·
Question regarding change in internal energy
- erik-the-red
- · Replies 3 ·
Ball on string catches peg and leaves circular path
- chuxingli
- · Replies 10 ·
Simple Harmonic Motion acceleration problem
- NutriGrainKiller
- · Replies 4 ·
Find the coefficient of kinetic friction between the crate and the surface
- hannsparks
- · Replies 4 ·
Elastic collision between two sleds on air-cushion track
- Pytagoras
- · Replies 1 ·
Physics Help: Calculating Speed for a Sled Collision Test Tomorrow
- Pytagoras
- · Replies 4 ·
Will a Rolling Ball on a Level Surface Ever Stop?
- Euclid
- · Replies 5 ·
Spring, Amplitude and Acceleration
- dukkie
- · Replies 20 ·
Electric potential and electric potential energy question
- firebug
- · Replies 1 ·
Car Crash Scenario Math: Is 114285 Pa Too High?
- Frank_Horrigan
- · Replies 3 ·
Negative Angular Velocity: Is It a Change in Direction?
- NotaPhysicsMan
- · Replies 3 ·
Torque and angular acceleration on a high bar at 30-degree intervals
- NotaPhysicsMan
- · Replies 16 ·
Volume expansion problem wheres initial volume?
- Dantes
- · Replies 2 ·
Solve F for 400N Post on 36.9° Rope
- marialo
- · Replies 1 ·
Force between two blocks pushed and pulled in opposite directions
- suddendeath87
- · Replies 2 ·
Torque and center of mass question
- ktpr2
- · Replies 4 ·
How Do You Calculate Motorcycle Speed Using the Doppler Effect?
- dustybray
- · Replies 1 ·
What Calculations Determine the Dynamics of a Ball in Vertical Circular Motion?
- thugg
- · Replies 1 ·
How can I use this applet to find the wavelength of a sound wave?
- jakeowens
- · Replies 1 ·
Probability distribution of the momentum value p
- NEWO
- · Replies 2 ·
Centripetal acceleration on a grinding wheel
- physics_ash82
- · Replies 4 ·
A Difficult Mechanics Problem (Work-Energy?)
- chaose
- · Replies 5 ·
Why do objects of different weights fall at the same rate?
- khizman
- · Replies 2 ·
Angular Velocity Calculation for a Ballistic Cylinder with a Fired Bullet
- Punchlinegirl
- · Replies 4 ·
Why Is My Wavelength Calculation Incorrect?
- lw11011
- · Replies 1 ·
Maximum elevator acceleration with cable stress limit
- ovoleg
- · Replies 2 ·
Why did I get the wrong answer?
- dukkie
- · Replies 2 ·
Sound wave pressure amplitude, wavelength and frequency
- Seiya
- · Replies 2 ·
What is the Angular Momentum After a Totally Inelastic Collision?
- jalapenojam
- · Replies 9 ·
Solve Spring Equilibrium Problem: (a) & (b) w/ Friction
- cgotu2
- · Replies 4 ·
Why is the amplitude u in the wave equation a vector?
- PhiJ
- · Replies 13 ·
Can an Object Move in a Circular Path Without Being Accelerated?
- Equilibrium
- · Replies 1 ·
Conservation of angular momentum on a frictionless table
- Punchlinegirl
- · Replies 17 ·
Question on Diffraction and interference.
- brat-sampson
- · Replies 1 ·
Car turning at 20 m radius with pendulum deflecting 37 degrees
- Werg22
- · Replies 6 ·
Wires Magnetic field question
- meadow
- · Replies 2 ·
Specific Heat of aluminum Problem
- noboost4you
- · Replies 5 ·
Finding the point where gravitational forces balance between two bodies
- InstaGaeta
- · Replies 1 ·
Double Slit Problem: Solve for D2-D1 with 500nm Wavelength
- knox_122
- · Replies 1 ·
Work problem of person pushing box
- jacy
- · Replies 17 ·
How can I use math to calculate the distance of a trebuchet-launched projectile?
- whatzzupboy
- · Replies 2 ·
Is Ffr=ma=m(v^2/r) Correct for Given Values?
- nrc_8706
- · Replies 9 ·
Force on pail bottom when rotating at minimum speed in vertical circle
- nrc_8706
- · Replies 11 ·
Spherical fish buoyancy and fluid dynamics calculations
- stuplato
- · Replies 10 ·
How Does Wind Affect the Forces on a Hanging Spider?
- DB
- · Replies 8 ·
What Are Some Interesting Grade 11 Physics Article Topics?
- Mark_P
- · Replies 3 ·
Why are clockwise and counterclockwise called senses in torque?
- Trista
- · Replies 3 ·
What is the Amplitude of a Mass-Spring System?
- dukkie
- · Replies 2 ·