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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Finding Mass from Coulomb's Law: A Guiding Hand
- czaitz
- · Replies 2 ·
Vector Maps (Trig): Solving Flight Path from Lincoln to Manhattan
- PascalPanther
- · Replies 1 ·
What Is the Longest Possible Hole-in-One for This Golfer?
- Counsellnfc
- · Replies 1 ·
Freefall Question: Proving Greater Speed Increase
- greeenmonke
- · Replies 5 ·
Absolute Pressure of Fluid: Static + Dynamic = 15psi?
- Idea04
- · Replies 1 ·
Bullet fired through 8.1cm board at 452 m/s
- krazykaci
- · Replies 18 ·
Car accelerating uniformly for 6s - kinematics
- krazykaci
- · Replies 6 ·
Calculating Average Acceleration During Ball-Wall Collision
- krazykaci
- · Replies 5 ·
Car accelerating from 53 mph to 68 mph at 0.57 m/s²
- krazykaci
- · Replies 6 ·
Does Tank Height Affect Water Pressure and Force?
- Idea04
- · Replies 1 ·
Electric charge inside a cubical volume
- FrogPad
- · Replies 2 ·
Acceleration and Moving Objects
- Soaring Crane
- · Replies 2 ·
How far into the block does the arrow penetrate?
- Zippy
- · Replies 9 ·
What does temperature gradient mean in thermodynamics?
- Benny
- · Replies 3 ·
Estimating the force of a baseball swing
- danago
- · Replies 4 ·
Calculating the percentage difference.
- Clef
- · Replies 2 ·
How Do You Convert a 2D Crystal Lattice to a 2D Reciprocal Lattice?
- big man
- · Replies 1 ·
What is a uniform paper collar in relation to rotation of rigid bodies?
- garyljc
- · Replies 6 ·
What units are used in the expression P = (B^2 A)/(2 mu_o)?
- NUMB_NUTS
- · Replies 5 ·
Rock kicked off cliff: accounting for sound travel time
- Aubiefan
- · Replies 11 ·
My Vector Enigma: Solving Analytically w/ Trig Functions
- Noesis
- · Replies 1 ·
Estimating Problem: Water Drops in Oceans
- rleung3
- · Replies 3 ·
Calculating Charge of Radon Nucleus
- poteat86
- · Replies 4 ·
What Is the Speed, Period, and Wavelength of This Transverse Wave?
- scienceman2k9
- · Replies 2 ·
How to Find Acceleration for a Car Stopping Over 50m from 80 km/h?
- 888
- · Replies 9 ·
Calculating Water Flow Rate Under Compression
- Idea04
- · Replies 5 ·
How Do You Convert 65mph to ft/s and km/h?
- emma123
- · Replies 6 ·
How Does Dalton's Law Explain Lower Boiling Temperatures at High Altitudes?
- jrd007
- · Replies 1 ·
Net force on charges found to be zero
- eltel2910
- · Replies 2 ·
Calculate Resultant Force of Charges on Rectangle
- Alt+F4
- · Replies 3 ·
What are some suggestions for books that explain electromagnetic theory?
- NUMB_NUTS
- · Replies 4 ·
Viscosity of Fluid Mixtures: Calculating Pa.s
- flash
- · Replies 3 ·
Just need to clarify something (FRICTION)
- asteg123
- · Replies 2 ·
Why include hanging mass in F=ma for a trolley experiment
- Clef
- · Replies 9 ·
Calculating Air Friction Trajectory of a Ball
- Sh00b
- · Replies 7 ·
How Does a Glass Block Affect the Convergence Point of Light Rays?
- sweetgirl86
- · Replies 6 ·
How are electric and magnetic fields connected to virtual photons?
- Mattara
- · Replies 2 ·
Physical pendulum of stick swing
- scienceman2k9
- · Replies 2 ·
Calculating Deceleration and Stopping Time for Margo's Corvette
- almost__overnow
- · Replies 1 ·
I i dont even know where to start o_O
- vincikai
- · Replies 1 ·
What Is the Electric Field at the Origin Due to an Infinitely Long Charged Wire?
- mrjeffy321
- · Replies 3 ·
Can I find acceleration and initial velocity from displacement, time, and final velocity?
- pavadrin
- · Replies 5 ·
What Could Be the Mistake in Calculating Displacement Direction?
- rleung3
- · Replies 1 ·
Three charges/electric field problem
- FlipStyle1308
- · Replies 21 ·
Elementary physics in 1 dimension
- parm12
- · Replies 2 ·
How Does Exponential Decay Relate to Velocity in Differential Equations?
- konichiwa2x
- · Replies 6 ·
Stone falling freely: distance in last second equals distance in first 3 seconds
- konichiwa2x
- · Replies 7 ·
What is the best method to calculate the force of a baseball swing?
- danago
- · Replies 11 ·
Distance light travels in a given time
- sportsnh
- · Replies 2 ·
In 1/2mv^2, is m grams & v ft per second?
- skizbok
- · Replies 3 ·
How Does Angular Velocity Change with Time in a Rotating Disk?
- kappcity06
- · Replies 1 ·
How Much Light Passes Through Three Polarizing Sheets?
- FrogPad
- · Replies 1 ·
Solving 2D Motion Problem: A to B Flight Distance
- Aubiefan
- · Replies 3 ·
Why does Harry's vacation start early?
- parker21
- · Replies 2 ·
Vector components under a translation
- Geekster
- · Replies 4 ·
Finding R3 value for maximum power dissipation
- eisbrecher
- · Replies 5 ·
Simple vector subtraction question
- mikefitz
- · Replies 6 ·
Understanding Trigonometry and Physics in Balloon Flight
- physicsgal
- · Replies 11 ·
When Does Normal Force on a Wood Block Equal 0?
- ljK
- · Replies 5 ·
I would like to get a confirmation about this one
- fara0815
- · Replies 3 ·
What is the magnitude of the acceleration of an electron
- athos
- · Replies 2 ·
Displacement Calc: Find x if x'>ab?
- konichiwa2x
- · Replies 2 ·
What Is the Reaction Force on a Fire Hydrant Nozzle?
- MathematicalPhysicist
- · Replies 20 ·
Projectile fired at angle: find maximum height, range, angle and flight time
- markiii
- · Replies 3 ·
Free Fall (kinematics-what I do wrong?)
- Kalie
- · Replies 3 ·
Is a smaller or larger chi-squared value better for data?
- Kalie
- · Replies 3 ·
How Does Charge Transfer Affect Electrostatic Force Between Spheres?
- mb85
- · Replies 3 ·
How Fast is an Airplane Moving at Takeoff with Constant Acceleration?
- WRXSIG
- · Replies 2 ·
Find the total distance traveled
- sweetdaisy186
- · Replies 12 ·
I was so sure I had gotten this acceration problem right
- sweetdaisy186
- · Replies 6 ·
Finding a formula for projectile motion
- NUMB_NUTS
- · Replies 1 ·
Calculating Package Delivery by Air: Time, Distance, and Velocity
- markiii
- · Replies 2 ·
Does Pressure Distribute Evenly in Water Columns?
- Idea04
- · Replies 2 ·
Mary runs 10km in 40 minutes. What is her average speed in m/s
- almost__overnow
- · Replies 1 ·
Calculate Distance Walked in Kilometers by Betty from Bay Farm Bridge to Hornet
- almost__overnow
- · Replies 3 ·
2 Simple mechanism geometry problems
- caddyguy109
- · Replies 4 ·
Does sublimation increase entropy more than freezing?
- quantumlight
- · Replies 6 ·
What is impulse and how does it relate to momentum?
- danago
- · Replies 1 ·
Average velocity for a bus traveling south in two segments
- supermancs
- · Replies 2 ·
What is the electric flux through the hemispherical surface?
- physics231
- · Replies 1 ·
Velocity and Distance Calculations for a Cyclist Riding Down a Hill
- physicsgal
- · Replies 18 ·
Kirchoffs current law. Someone check to make sure its correct?
- Agnostic
- · Replies 3 ·
Motion detector graphs, distance vs time
- moomoocow
- · Replies 1 ·
What is the Relationship Between Displacement and Time in Particle Motion?
- konichiwa2x
- · Replies 8 ·
When should a car leave C to arrive at B with a car from A?
- Hisanagi
- · Replies 1 ·
Find the time (t) - (linear problems)
- Escalefter
- · Replies 4 ·
Calculating ground contact and flight time while running 100m
- usprince
- · Replies 2 ·
Calculate Impact Speed of Ball Bearings Dropped in Shot Tower
- Kalie
- · Replies 2 ·
Superball collision acceleration and braking distance problems
- phoizgood
- · Replies 2 ·
Car stopping distance with reaction time
- Kalie
- · Replies 3 ·
How fast will the car be traveling at that instant?
- machinegun
- · Replies 1 ·
Calculating Time to Reach a Stopped Object with Linear Motion
- sweetdaisy186
- · Replies 5 ·
How does thrust affect takeoff performance for the F-14 tomcat?
- DownSetDana
- · Replies 2 ·
Billy the kid and the kinetic energy
- fara0815
- · Replies 7 ·
Solving Heat Loss from Hose with Radii R_i and R_o
- NotMrX
- · Replies 3 ·
Pressure at mid-height in accelerating coke can
- NotMrX
- · Replies 8 ·
Mountain climbing Vector problem
- bluewolf
- · Replies 9 ·
Finding Vector Magnitude & Direction in River Flow Problem
- bluewolf
- · Replies 2 ·
Questions about Wave Period and Radio Wave Wavelength
- sinandcity
- · Replies 2 ·
What Is a Newton Second?
- danago
- · Replies 6 ·