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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Diffraction grating: spacing, diffraction angle, and frequency
- jendrix
- · Replies 6 ·
How long should I struggle with a physics problem before looking at the answer?
- Kinermatics
- · Replies 1 ·
Model Railgun Project - Don't have a grasp of the physics
- CuriousCynic
- · Replies 3 ·
A simple change in gravitational energy, but I want to be certain.
- US-RB
- · Replies 4 ·
How Do You Calculate the Initial Speeds of Two Electrons in a Collision?
- Millacol88
- · Replies 3 ·
Velocity of a Dropped Camera on Mars
- Casey314stl
- · Replies 1 ·
How Fast Were the Catapulted Boulders Initially?
- Casey314stl
- · Replies 1 ·
What is the problem with this physics question?
- Casey314stl
- · Replies 1 ·
Wavelenght associated with electron
- mounica reddy
- · Replies 5 ·
How Do You Calculate Average Speed from Displacement-Time Data?
- CedarPointer
- · Replies 3 ·
How to find energy of sound wave
- MySecretAlias
- · Replies 1 ·
Two pendulums of different lengths starting in step
- gabloammar
- · Replies 10 ·
Looking for paid help with applied mechanics homework
- togo
- · Replies 6 ·
How Much Air Can Be Heated with the Same Energy Used to Warm Water in a Kettle?
- Firben
- · Replies 3 ·
Understanding Physics for the Beer Mug Problem
- Let It Be
- · Replies 5 ·
Kinetic energy of satellite orbiting a planet
- fishguts
- · Replies 2 ·
Elastic Collision kinetic energy and momentum
- fobbz
- · Replies 3 ·
What Is the Wagon's Speed After an Elastic Collision?
- canicon25
- · Replies 2 ·
Temperature change in an object
- kieslingrc
- · Replies 3 ·
Op-amp comparator circuit with LED threshold voltage
- Femme_physics
- · Replies 13 ·
Forces and Vectors in Equilibrium
- geoinerworks
- · Replies 2 ·
How does gravitational variation affect kinetic energy calculations?
- d4nk1337sauce
- · Replies 6 ·
Purchase a heater with a high resistance because P= I^2 R
- heartOFphysic
- · Replies 7 ·
What is the ball's maximum height?
- Casey314stl
- · Replies 7 ·
Which graph shows how launch angle affects projectile range?
- Temper888
- · Replies 4 ·
Can someone answer this easy phsyics problem about vertical height
- Casey314stl
- · Replies 12 ·
Angles and rotational equilibrium
- Hypercubes
- · Replies 14 ·
Snow sliding off a play set and forming an arch
- Jstuff
- · Replies 3 ·
Solve Bohr Atom Problem: Find Radius, Energy, Wavelenght
- Fabio010
- · Replies 5 ·
Minimum distance for 1 MeV protons approaching a gold nucleus
- Fabio010
- · Replies 17 ·
Finding coefficient of friction for a toy car on an inclined plane
- allelil13
- · Replies 15 ·
Finding Terminal Velocity of a Balloon in Free Fall
- luigihs
- · Replies 20 ·
Speed of projectile fired at 30° after 3 seconds
- Let It Be
- · Replies 7 ·
Two Dimensional Motion/Projectile Motion
- Let It Be
- · Replies 20 ·
How Does Changing the Reference Point Affect the Potential Energy Calculation?
- Alaa Mahmoud
- · Replies 8 ·
What Are the Different Equations for Free Fall Drop?
- Let It Be
- · Replies 2 ·
How do angle of launch, range, and flight time relate to each other?
- Temper888
- · Replies 1 ·
Throwing Apricots: Calculating Range of Impact
- cashboxz01
- · Replies 1 ·
Solving Equations Using Sin/Cos: Projectile Motion
- Let It Be
- · Replies 3 ·
Find the tension in each string
- mechanics_boy
- · Replies 2 ·
Method of joints, force in each member
- togo
- · Replies 11 ·
Particle on a wedge relative acceleration
- evansmiley
- · Replies 1 ·
Dynamics problem: Rod on a rough surface
- Ak94
- · Replies 2 ·
When and Where Do Two Balls Meet?
- mechanics_boy
- · Replies 7 ·
Two trucks are around the pulley
- heartOFphysic
- · Replies 14 ·
How do I work out a as in F= ma?
- MattA147
- · Replies 3 ·
Moment of Inertia of a Hemispherical Shell
- sriracha
- · Replies 2 ·
Rod rotating until stoppers compress against walls
- gastro54
- · Replies 8 ·
Dynamic equilibrium - walking in constant speed
- yoni162
- · Replies 3 ·
Young Double Slit Experiment (Determine wavelength of light source)
- HarleyM
- · Replies 3 ·
A vessel filled with two liquid how to determine boant force?
- vkash
- · Replies 9 ·
Convection, Conduction, Radiation
- Dberry
- · Replies 7 ·
Deriving Velocity and Normal Reaction in a Vertical Circular Motion
- jiboom
- · Replies 1 ·
Understanding Work in Quasistatic Expansion and Compression of a Gas
- PhysicForFun
- · Replies 6 ·
Finding focal length of a magnifying glass from magnification
- Stomper123
- · Replies 10 ·
Physics kinematics SIN question
- ShearonR
- · Replies 14 ·
Solving for the Alaskan Rescue Team Equation
- Let It Be
- · Replies 3 ·
What does T represent in mc^2 equation?
- ZedCar
- · Replies 5 ·
What is the initial speed of the rock when thrown off a cliff?
- Let It Be
- · Replies 12 ·
Kinetic Friction, Undefined Pushing Force, Find Normal Force.
- Saraballs
- · Replies 4 ·
Which equation should I use to calculate flux for a point charge in a sphere?
- ZedCar
- · Replies 7 ·
Momentum and kinetic energy of pieces resulting from an explosion
- phosgene
- · Replies 2 ·
How to Find Total Resistance in a DC Circuit
- fobbz
- · Replies 5 ·
Deriving the relativistic velocity addition formula
- ZedCar
- · Replies 12 ·
How Does the Angle of Inclination Change as a Skier Descends a Hill?
- Temper888
- · Replies 3 ·
How Do You Calculate Uncertainty in Amplitude Readings from a Sound Sensor?
- MrMeltedChees
- · Replies 1 ·
How to Determine Power Dissipated by a Resistor When Voltage is Doubled?
- salomi
- · Replies 12 ·
What is the correct way to find tension in a pulley problem?
- ja!mee
- · Replies 4 ·
Figuring Out Increase in Angle of Inclination
- Temper888
- · Replies 5 ·
How to find max KE of electrons in photoelectric effect
- smarton
- · Replies 1 ·
Coriolis Effect - Vertical Shot, solution through integration?
- Malor
- · Replies 2 ·
Refractive index problems with Snell's law
- zain1612
- · Replies 5 ·
Valence electrons of a transition element
- reyrey389
- · Replies 2 ·
What is the component of weight along a ramp?
- heartOFphysic
- · Replies 6 ·
Solve Study Guide Problems: Homework Statement
- billybobay
- · Replies 1 ·
What's Wrong with My Electrostatic Equilibrium Calculation?
- jfierro
- · Replies 11 ·
Leaning Column Free Body Diagram
- dstretan
- · Replies 7 ·
Release block on a moving inclined plane.
- bensondros
- · Replies 9 ·
A Rocket was launched directly upwards from rest.
- heartOFphysic
- · Replies 2 ·
How to work out frictional torque and resisting motion
- lew123189
- · Replies 1 ·
Circular motion time/radius ratio question
- d4nk1337sauce
- · Replies 1 ·
Calculating Average Power for Raising a Roller Coaster Car
- direct99
- · Replies 9 ·
Momentum values in quantum mechanics
- shakaflaka
- · Replies 2 ·
Dynamics - Blocks on an Incline Plane
- fobbz
- · Replies 5 ·
How does the weight of a fish affect the stretching of a steel wire?
- usamo42j
- · Replies 1 ·
The Slowest fall / simple aerodynamics
- Aya88
- · Replies 2 ·
Kinetic Energy and Frictional Work of Child Jumping on Sled
- Jfxue
- · Replies 3 ·
When Does Water Completely Vaporize in a Constant Volume Process?
- Cozy_Powell
- · Replies 1 ·
Ladder of mass M and length L, find kinetic energy in terms
- amiras
- · Replies 1 ·
How Do Mass Differences Affect Satellites with Identical Orbits?
- Temper888
- · Replies 2 ·
Self potential energy of a sphere with doubled radius
- IgE
- · Replies 2 ·
Method of joints: should I include the minus sign when substituting?
- blargonaut
- · Replies 1 ·
Moment of inertia of hemispherical shell
- mishima
- · Replies 5 ·
Absolute pressure of air inside a meat baster
- phosgene
- · Replies 4 ·
How Does Impulsive Force Affect Particle Velocity Over Time?
- Samuelb88
- · Replies 1 ·
Rocket Propulsion: Understanding the Equation Behind It
- aaaa202
- · Replies 2 ·
Kinetic energy and potential energy work
- mtayab1994
- · Replies 20 ·
How to determine oil drop charge without being told
- Dberry
- · Replies 6 ·
How Does Friction Affect Motion on Different Surfaces?
- shinnsohai
- · Replies 2 ·