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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Electric Fields in Parallel Plates
- salman213
- · Replies 5 ·
Frequence and wavelength of a photon
- kinst
- · Replies 3 ·
Electrostatics of ping pong ball question
- ploppers
- · Replies 4 ·
Very elementaria kinematics question
- maria_conchita
- · Replies 1 ·
Heat required to melt ice on a car windshield
- scw287
- · Replies 12 ·
What does the slope mean in a mass vs period squared graph for springs?
- MJC8719
- · Replies 1 ·
Potential Energy converted to kinetic energy
- kelly0107
- · Replies 1 ·
Calculating Initial Acceleration of Third Sphere in Gravitational Force Triangle
- ladolce
- · Replies 3 ·
Why did Bohr assume circular orbits instead of elliptical ones?
- gandharva_23
- · Replies 2 ·
Energy Conservation of a toy gun
- salman213
- · Replies 8 ·
Converting Moon Temperatures to Celsius and Fahrenheit
- scw287
- · Replies 11 ·
How Do You Convert Angular Distance from Radians to Linear Distance?
- Sparky500
- · Replies 16 ·
Angular Acceleration: Solve 500-700rev/sec in 30sec
- Sparky500
- · Replies 4 ·
Does the Equation ΔE = qV Calculate Both Kinetic and Electrical Energy?
- grscott_2000
- · Replies 1 ·
Buoyant Force on a Helium Balloon
- e(ho0n3
- · Replies 11 ·
How Do You Calculate Guitar String Length and Fret Placement Based on Frequency?
- Beasticly
- · Replies 1 ·
Standing Waves on a String: True/False Questions
- BMWPower06
- · Replies 1 ·
Why Do Magnets Lose Their Magnetization When Heated or Dropped?
- kinst
- · Replies 3 ·
Solve a Skier Work Physics Problem on a 37.2° Slope – No Friction
- Momentum09
- · Replies 3 ·
Electric potential, potential difference, and potential energy
- btaylor
- · Replies 2 ·
Calculating Gravitational Force and Acceleration in an Equilateral Triangle
- ladolce
- · Replies 12 ·
Elastic Gravitational Potential ENergy
- salman213
- · Replies 4 ·
Galvanometer has a coil with a resistance
- GravityGirl
- · Replies 5 ·
Radius of Curvature of Bimetallic Strip
- e(ho0n3
- · Replies 6 ·
How Does Charge Affect Motion and Force in Physics Problems?
- streetmeat
- · Replies 4 ·
Last one I PROMISE gravity question
- ladolce
- · Replies 4 ·
Calculating Maximum Gravitational Force between Bowling Ball and Billiard Ball
- ladolce
- · Replies 7 ·
Gravitational Acceleration inside a Planet
- whitetiger
- · Replies 3 ·
How can I define a perfectly inertial frame?
- gandharva_23
- · Replies 1 ·
Linear and Angular motion and Friction
- Sparky500
- · Replies 3 ·
Rate of change of the magnitude of the displacement
- Ali 2
- · Replies 3 ·
Forces on an unusual supporting structure
- nina
- · Replies 1 ·
Block sliding down 30° incline then across ground with friction
- Momentum09
- · Replies 2 ·
Bullet & Pendulum Homework: Determine Horiz. Displacement
- BMWPower06
- · Replies 5 ·
Focal Length of Diverging Lens: Negative Value Confirmed?
- grscott_2000
- · Replies 1 ·
Understanding Physics: Gravitational Potential Energy
- t_n_p
- · Replies 2 ·
Calculating the Stretch of a Climber's Safety Rope: A Simple Harmonic Question
- cheechnchong
- · Replies 3 ·
Max Velocity for Car to Turn Over When Skidding Sideways
- marsm
- · Replies 2 ·
Finding Hg value in gas permeability equation
- Idea04
- · Replies 1 ·
Electrical & gravitational force:which one is stronger?
- shehri
- · Replies 2 ·
Calculating Forces of Friction with Coefficient of 0.544 and Weight of 86.5N
- Momentum09
- · Replies 1 ·
Frequency of oscillation problem
- usmcredhawk
- · Replies 3 ·
Maximum work from two masses of water at different temperatures
- Jack111
- · Replies 3 ·
Centrifugal force equation in rotating reference frames
- lets_resonate
- · Replies 2 ·
Can Anybody Correct My Physics Answers?
- freezx
- · Replies 3 ·
How Do I Handle These Physics Motion Problems?
- YoungOn3
- · Replies 1 ·
How do I find the components of a vector parallel to the x-axis?
- jpierson
- · Replies 3 ·
Can you explain and comment on the Newtonian viscosity equation?
- black_kitty
- · Replies 1 ·
What is the coefficient of kinetic friction for the incline?
- Momentum09
- · Replies 1 ·
How Is Kinetic Energy Calculated at the Peak of a Baseball's Trajectory?
- kiwikahuna
- · Replies 3 ·
Electric potential, off by a factor of 1/2
- supersunshine
- · Replies 5 ·
Question on different masses striking balls
- s1mondecyrene
- · Replies 4 ·
Magnetic force with spring and resistor problem
- floridianfisher
- · Replies 13 ·
Two-mass pulley system with friction on table
- ceceliaz
- · Replies 1 ·
Uniform Circular Motion: Centripital Acceleration vs. Acceleration
- Chele
- · Replies 4 ·
Solving Newton's Second Law: 3 Blocks, 667 N Force
- Momentum09
- · Replies 2 ·
What is the work done by the ground in stopping the pile?
- bolei
- · Replies 3 ·
Work to create a square of charges
- supersunshine
- · Replies 1 ·
Gravitational Force and weight at the equator
- MiniJo
- · Replies 3 ·
Just needed to be proofread (easy forumula)
- simplekin
- · Replies 1 ·
Finding the Value of z and its Derivatives
- uniidiot
- · Replies 2 ·
Plumb line angle during plane acceleration
- JFerraro
- · Replies 3 ·
Kinetic Energy and Work of a crate
- Kruz87
- · Replies 3 ·
Should you always apply the rules of significant figures?
- lLovePhysics
- · Replies 1 ·
Figuring out the efficiency of an inclined plane
- simplekin
- · Replies 1 ·
What Is the Acceleration of a Baseball at Its Highest Point?
- lLovePhysics
- · Replies 1 ·
What exactly is it that determines that a magnet has only 2 poles?
- Mr_Bojingles
- · Replies 1 ·
Golf ball momentum and average force from club impact
- MXKevin214
- · Replies 4 ·
How to Calculate Acceleration in a Pulley System with Two Masses?
- Touchme
- · Replies 2 ·
Football player kinematics in one dimension
- ladolce
- · Replies 9 ·
Maxwell's velocity distribution
- Ben Hom Chen
- · Replies 9 ·
Why do we need to apply a force to lift an object against gravity?
- Mr Virtual
- · Replies 4 ·
Muon slowing from 5×10^6 m/s at 1.25 m/s²
- say_physics04
- · Replies 8 ·
Calculating Initial Velocity: Physics of Home Alone 2's Tool Chest Scene
- Caronica
- · Replies 1 ·
Calculating force on a bullet, given mass + velocity + barrel length
- exi
- · Replies 2 ·
Finding time and range for a projectile launched from a cliff
- exi
- · Replies 1 ·
Compound pendulum with disk and rod: rotational inertia, COM, period
- MJC8719
- · Replies 1 ·
How do you know the factors of the acceleration and the distance?
- apope
- · Replies 3 ·
What Forces Were Involved in Richard Hammond's Car Crash?
- thornton tribe
- · Replies 3 ·
Braking force to stop a 1150 kg car in 10 seconds
- btkale
- · Replies 23 ·
How Many Revolutions Per Second to Settle Red Corpuscles in a Centrifuge?
- hiddenlife5009
- · Replies 8 ·
Volume of air in a sphere given pressure, temperature, and radius
- eldon
- · Replies 11 ·
Calculating Max Angular Velocity for Rotation and Force
- hastings
- · Replies 11 ·
Determine max heigh above the ground reached by the marble
- t_n_p
- · Replies 5 ·
How Do You Calculate Acceleration and Ground Component on an Inclined Ramp?
- ladolce
- · Replies 5 ·
Does a Melon Jump Backward When Hit by a Bullet?
- ClzdCaptions
- · Replies 11 ·
How Does Gravity Affect Acceleration at 10% of Earth's Radius?
- kiwikahuna
- · Replies 7 ·
What are the times when a pellet reaches 25 meters above its initial height?
- DrPepper
- · Replies 5 ·
Uniform circular motion with unknown mass
- Emil Zapotec
- · Replies 5 ·
Energy Conservation of a car collision
- BMWPower06
- · Replies 5 ·
Understanding Relative Motion in a Constantly Moving Plane
- say_physics04
- · Replies 2 ·
Average Force Of Friction (attempted Question)
- hockey45
- · Replies 3 ·
Physics 11 Optic Device Project
- shawshank
- · Replies 3 ·
Efficiency of a Cart Rolling Down an Inclined Plane
- xRadio
- · Replies 1 ·
Heres a tough one i had on my final im dying to find out how to do it
- xxacefirexx
- · Replies 1 ·
Suggestions on how to study for physic finals
- Missy81590
- · Replies 1 ·
Is Acrylic Plastic Hydrophobic?
- Idea04
- · Replies 1 ·
Given range and angle - but not time - find initial velocity?
- exi
- · Replies 4 ·
What is the alternative term for rotational kinetic energy?
- ssb
- · Replies 4 ·