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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How Does Changing Drag Coefficient Affect Terminal Velocity in Downhill Skiing?
- dprimedx
- · Replies 1 ·
Uniform Vertical Force of Electrons, Using Momentum Principle
- leejqs
- · Replies 2 ·
Point Charges: direction and magnitude
- matt72lsu
- · Replies 6 ·
What is the correct sign convention for the change in internal energy?
- taculator
- · Replies 2 ·
Need help using Coulomb's Law; finding q1 when q2>q1
- Michael126
- · Replies 6 ·
Short webpage title: Calculating Electric Field and Force from Two Charges
- dgl7
- · Replies 4 ·
What Is the Correct Equation for a Box on a Frictionless Incline?
- Elo21
- · Replies 1 ·
How Does a Neutron's Speed Change After Colliding with a Deuterium Nucleus?
- Magma828
- · Replies 4 ·
Relative momentum formula or not?
- leejqs
- · Replies 1 ·
Don't get this dynamics problem
- elpermic
- · Replies 2 ·
Elastic Recovery and Permanent Set
- waltonhcky05
- · Replies 2 ·
Taylor Series Expansion for the Relativistic Factor of Momentum
- leejqs
- · Replies 4 ·
Coefficient of friction of a moving car
- katem
- · Replies 2 ·
Accelaration/ traveling problem
- Teenytiny1991
- · Replies 1 ·
Quick question on explaining the law of conservation of momentum.
- Senjai
- · Replies 2 ·
How Many Harmonics in a 4-Node Standing Wave?
- PearlyD
- · Replies 1 ·
How Do Bullet Impact and Spring Constants Determine Oscillation Characteristics?
- Biggidy
- · Replies 2 ·
Calculating Car Speed from Horn Frequency
- Moroni
- · Replies 2 ·
Electric Currents and Magnetic Feilds
- lampshader
- · Replies 1 ·
Why Are Dipole Forces Not Collinear in a Uniform Electric Field?
- Masafi
- · Replies 3 ·
Was the Car Speeding Based on Skid Mark Analysis?
- Elo21
- · Replies 4 ·
Initial Velocity of 1.52 m High Jump Record
- uzboi
- · Replies 2 ·
How High and Far Does a Spring-Propelled Space Shuttle Travel?
- Edgar92
- · Replies 1 ·
Harmonic Motion of a pendulum Problem
- MorganJ
- · Replies 6 ·
How to find potential at center of square of point charges?
- look416
- · Replies 7 ·
Calculating image locations with thin lenses
- binhnguyent9
- · Replies 3 ·
How Far Are You From This Lens?
- binhnguyent9
- · Replies 4 ·
How Is the Initial Current Calculated in a Discharge Graph?
- Masafi
- · Replies 5 ·
Understanding Kirchhoff's Laws: Solving Circuits with Multiple Voltage Sources
- fluidistic
- · Replies 18 ·
Heat of fusion of water ice and dry ice (CO2) - need some insight
- Dumile
- · Replies 1 ·
Equipotential Lines in a Uniform Electric Field: Force & Distance
- Masafi
- · Replies 3 ·
Calculate Work done in square form?
- arslion
- · Replies 1 ·
Analysis of a circuit that contains two diodes
- jonjacson
- · Replies 11 ·
Time Dialation-Theory of Relativity
- AlmonzoWilder
- · Replies 5 ·
How Fast is the Wave with a 1-Second Echo?
- muhaimin
- · Replies 1 ·
Circular Motion: Plane does a loop
- thussain93
- · Replies 1 ·
Estimating Total Air Molecules in a Room | Help with Homework Statement
- Teenytiny1991
- · Replies 1 ·
Finding x when Elastic Potential Energy equals Kinetic Energy
- rkelley7891
- · Replies 3 ·
How Do You Calculate Spring Constant and Mass for Oscillations?
- dynamity
- · Replies 1 ·
Velocity as a function of distance problem
- Slepton
- · Replies 4 ·
Torques please explain it a little more.
- cary1234
- · Replies 2 ·
Projectile Motion, Shooting a Ball in Zero Gravity.
- laxstud120
- · Replies 2 ·
Time of sunset using Radius of earth
- George3
- · Replies 12 ·
What was the initial speed of the archer's arrow?
- jwang023
- · Replies 1 ·
Calculate acceleration of the 4 kilogram block
- sobek
- · Replies 1 ·
Vectors. Adding, subtracting, and velocity questions
- Matt12345
- · Replies 1 ·
Acceleration of a Sled: What is the Acceleration of a Sled Going Down a Hill?
- mybrohshi5
- · Replies 20 ·
How Is Diesel Engine Efficiency Calculated Using Compression and Cutoff Ratios?
- vladimir69
- · Replies 1 ·
Net Electric Field: Find Magnitude Midway Between 2 Particles
- nothingatall
- · Replies 1 ·
Net electric field with triangle
- nothingatall
- · Replies 1 ·
How Do You Calculate the Resultant Using Parallelogram Law and Trigonometry?
- jch11
- · Replies 1 ·
Understanding Neutrinos: The Elusive Particles from Space
- Marilena1983
- · Replies 6 ·
Nonuniform Semicircle of Charge problem
- littlebilly91
- · Replies 11 ·
Why do positive charges not move in a conductor?
- lha08
- · Replies 3 ·
Why is it difficult to measure 2000 amps with a series meter?
- Masafi
- · Replies 1 ·
Work-Energy Theorem: Determine Distance for 73kg Skier w/ 4.2m/s
- Physicsgeeks1
- · Replies 1 ·
Throwing a baseball up in the air
- cdotter
- · Replies 4 ·
Special Relativity - Proper Length
- eprparadox
- · Replies 4 ·
What is the Net Electric Field at Point P Due to Two Charges on the X-Axis?
- Hashmeer
- · Replies 5 ·
What are some real-life applications of lenses?
- ap_cycles
- · Replies 5 ·
Radioactive Emission: Determining Half-Life
- henryc09
- · Replies 2 ·
Kinematics/uniform circular motion.
- Muneerah
- · Replies 2 ·
Solving a Physics Problem Involving a Hinged Stick and Clay
- zhenyazh
- · Replies 12 ·
Copper wire attached to the terminals of a cell
- Masafi
- · Replies 4 ·
Question on Proportionate spheres (Help )
- aquirk
- · Replies 5 ·
What is the Time of Travel for a Train Stopping at Multiple Stations?
- mybrohshi5
- · Replies 8 ·
Black Oil - Why Does It Appear All Colors?
- Marilena1983
- · Replies 5 ·
Gauss's Law and electric flux of a surface
- Keithkent09
- · Replies 1 ·
Principle of conservation of momentum
- Masafi
- · Replies 1 ·
Capacitor Diagram: Investigating Charging Process
- Masafi
- · Replies 5 ·
Understanding the Energy Conversion in Smoke Detectors: A Brief Discussion"
- Masafi
- · Replies 2 ·
Centripetal acceleration at equator
- Masafi
- · Replies 1 ·
Why should you not take a notebook computer through a metal detector?
- lampshader
- · Replies 1 ·
Block and spring collision - work
- zhenyazh
- · Replies 2 ·
Indiana Jones rope swing physics
- zhenyazh
- · Replies 4 ·
Horizontal Projectile Motion Problem
- temaire
- · Replies 2 ·
Twin paradox and Hafele-Keating experiment
- nicekarmajobs
- · Replies 3 ·
RC time constant lab, Current vs time
- Tjvelcro
- · Replies 3 ·
What is the force that acts tangential to fluid's surface
- jarman007
- · Replies 2 ·
Diffraction Grating, Light with two wavelengths
- AlmonzoWilder
- · Replies 9 ·
Electrical Work Done by Supply Transferring 0.80 nC Charge
- Masafi
- · Replies 4 ·
What is the Minimum Value of Refractive Index for Total Internal Reflection?
- SirKhairin
- · Replies 3 ·
Calculating Speed & Time of Message Packet Through Earth's Center
- zhenyazh
- · Replies 2 ·
Solve Two Pulleys Problem: Find Minimum Tension Needed
- zhenyazh
- · Replies 3 ·
Proton passes parallel conducting plates
- Masafi
- · Replies 1 ·
Centre of Curvature: Turning Point or Centre?
- Masafi
- · Replies 1 ·
How can the stunt be possible with a minimum force of 600 N?
- Masafi
- · Replies 2 ·
Calculating Electric Field and Potential for a Line with Uniform Charge Density
- E92M3
- · Replies 11 ·
Jumping a Crevasse (Projectile Motion)
- Annan
- · Replies 3 ·
Rutherford's experiment alpha source
- Masafi
- · Replies 2 ·
Did I do this right or get lucky? Deriving spherical shell moment of inertia
- HHHisthegame
- · Replies 1 ·
Solving Atmosphere Layers: Deriving Equations for Venus Surface & Atmos. Temp.
- Sunshin3
- · Replies 1 ·
Find Speed & Acceleration of Stone in a Rotating Tire
- Muneerah
- · Replies 1 ·
Coin and Marble on a Frictionless Dome: When Will They Hit the Ground?
- Elo21
- · Replies 2 ·
Please help assign due 2marrow effective radiative temperature
- Sunshin3
- · Replies 1 ·
Find the velocity and acceleration vectors for uniform circular motion
- cdlegendary
- · Replies 7 ·
How Does Coulomb's Law Apply to a Charged Ring and a Point Charge?
- yb1013
- · Replies 1 ·
Centripetal force in London Eye
- Masafi
- · Replies 2 ·
Finding the magnitude of the eletric field of a uniformly charged rod.
- ILoveCollege
- · Replies 1 ·
Relationship between coefficients of linear and volume expansion
- madmartigano
- · Replies 2 ·