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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Blue light and an opaque object
- daNAV1GATOR
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Understanding work and kinectic energy?
- kyin01
- · Replies 3 ·
How to draw the angles to find force
- princesspriya
- · Replies 16 ·
Calculating Resistance In Circuit
- Andy111
- · Replies 3 ·
Find the maximum distance the spring is compressed.
- A_lilah
- · Replies 8 ·
Is Warren's (chroot) answer correct?
- daNAV1GATOR
- · Replies 2 ·
Calculating Torque for LP Turntable with Given Angular Speed and Mass
- cstout
- · Replies 7 ·
Kinetic energy lost in 2D inelastic collision
- vladittude0583
- · Replies 1 ·
Momentum, Work, Energy Question
- AussieDave
- · Replies 14 ·
Problem understanding circuit diagrams
- Kurret
- · Replies 3 ·
Solve the Circuit: Find v(t) Over Inductors
- jesuslovesu
- · Replies 1 ·
How far should you hit a pencil to maximize its flight distance?
- Lookaash
- · Replies 1 ·
How Does Opening a Parachute Affect a Falling Parachutist's Motion?
- checkmarks
- · Replies 1 ·
How Do You Set Up a Physics Problem Involving Projectile Motion?
- lifeisamazing
- · Replies 1 ·
Stress and strain calculations for steel and brass rods
- donkey131
- · Replies 5 ·
Hammer/Nail problem involving torque
- adamwhite
- · Replies 11 ·
Calculate Bullets Per Minute for Machine Gun and Man
- blue5t1053
- · Replies 6 ·
Newton's laws and working with systems
- dranseth
- · Replies 8 ·
Turning effect of forces and min force
- tyana21
- · Replies 12 ·
How Do Gravitational Forces Affect the Speed of Two Approaching Masses?
- NAkid
- · Replies 8 ·
Calculating standing waves, given a fruequency? :O
- SFSKabam
- · Replies 1 ·
Determining the Mass of the Pi^- Particle Using the Elementary Charge
- rojasharma
- · Replies 9 ·
What is the magnitude of the charge on each ball?
- Anuja
- · Replies 15 ·
Centripetal force of a roller coaster car
- sdskater15
- · Replies 2 ·
Thermodynamics-Finding Internal energy
- tre2k3
- · Replies 1 ·
Elliptical orbit around a massive spherical planet
- NAkid
- · Replies 1 ·
Solve Spring Frequency Homework: .88kg to .4kg
- jdeakons
- · Replies 1 ·
Problem with Work Done by Friction, Velocities-Extremely Hard
- stupidinphys
- · Replies 8 ·
Different ways to check the answers
- rootX
- · Replies 3 ·
What minimum speed must he be running?
- dflutedevil
- · Replies 14 ·
Capacitor Charge and Voltage Distribution in a Circuit with Multiple Capacitors
- awvvu
- · Replies 2 ·
Calculating Torque and Angle of Force on a Particle
- AnkhUNC
- · Replies 7 ·
Period of two stars orbiting a central star in a triple system
- NAkid
- · Replies 10 ·
How Does Screw Cap Pressure Keep a Soda Bottle Sealed?
- wbhphysics
- · Replies 2 ·
Telescope Resolution for AGN Accretion Disk
- wtaylor
- · Replies 3 ·
Why Does the Horizontal Ball in the Diagram Take Longer to Fall?
- Linday12
- · Replies 2 ·
How Fast Does a Spinning Disk Rotate After One Full Revolution?
- cstout
- · Replies 1 ·
Finding time up and time down: Verticle Projectile
- Mirth
- · Replies 3 ·
Simple Harmonic Motion Equation Question
- meganw
- · Replies 14 ·
What is the distance between star 1 and 2 if the net force of star 2 is zero?
- minimax
- · Replies 12 ·
Electric Field Halfway Between Two Charges
- Xet
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Elastic Collision - Symbolic Question
- kanavulator
- · Replies 3 ·
Finding where a third mass experiences zero net gravitational force
- NAkid
- · Replies 5 ·
Help needed with attached file
- zachcumer
- · Replies 9 ·
Calculating Center of Mass Speed in a Colliding System
- sealedhuman77
- · Replies 6 ·
Cadillac-Geo Collision: Calculating Speed of Impact
- sealedhuman77
- · Replies 3 ·
What is the Radius of Curvature of the Outer Surface of a Contact Lens?
- rabar789
- · Replies 1 ·
Collision/Impulse: Calculating Impulse and Average Force
- blue5t1053
- · Replies 3 ·
Finding instantaneous velocity of objects in projectile motion
- Suzan
- · Replies 1 ·
Does Wrapping a Wire Around a Magnet Enhance a Guitar Amp's Performance?
- tommytomthms5
- · Replies 5 ·
How much work was done on the mass?
- OstralyanPain
- · Replies 1 ·
How Does the Doppler Effect Alter Frequencies of a Moving Whistle?
- danago
- · Replies 1 ·
Fourth harmonic and standing wave modes on a 1.2m string at 120 Hz
- danago
- · Replies 6 ·
Calculate Net Force on Toy Car Rolling Down Incline
- maca_404
- · Replies 3 ·
Object Traveling Up an Inclined Plane
- campbellst87
- · Replies 6 ·
How Are Orbits and Orbitals Similar and Different in Quantum Mechanics?
- rojasharma
- · Replies 3 ·
Distance vs displacement for falling object with kinematic equation
- Linday12
- · Replies 4 ·
Building a house model from two poster boards for physics project
- jj2006
- · Replies 5 ·
Effect of Changing Magnetic Field on Flux through a Coil
- cse63146
- · Replies 9 ·
Center of Gravity/Torque problem
- adamwhite
- · Replies 9 ·
Calculating Impulse for a Leaping Cricket: A Physics Problem
- sealedhuman77
- · Replies 2 ·
[101]Potential energy of mass on a spring with 2 givens
- WPCareyDevil
- · Replies 2 ·
How Do You Calculate Displacement for Multiple Direction Movements?
- freshoff
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Coordinate system for specifying the precise location of objects in space?
- princesspriya
- · Replies 2 ·
If the electric field inside a conductor is zero, what is true of its potential?
- colombo
- · Replies 1 ·
Simple Harmonic Motion - Potential and Kinetic Energy?
- meganw
- · Replies 12 ·
Question on crystal oscillators
- Idea04
- · Replies 1 ·
Projectile Motion (in a vaccum)
- RogerDodgr
- · Replies 1 ·
Relativity and the twin paradox
- dakillerfishy
- · Replies 22 ·
How Do You Calculate the Angular Speed of a Bicycle Wheel?
- klopez
- · Replies 3 ·
The electric field is perpendicular to the electrostatic force
- colombo
- · Replies 3 ·
How Is Spring Constant Calculated in Simple Harmonic Motion?
- meganw
- · Replies 4 ·
How Does Kinetic Friction Affect Block Acceleration?
- chocolatelover
- · Replies 1 ·
Force on Particle in Dust Cloud
- cameo_demon
- · Replies 7 ·
Total distance traveled by particle in one period of simple harmonic motion
- meganw
- · Replies 2 ·
Finding the Height of a Nail for a Rolling Cylinder without Slipping
- radagast_
- · Replies 31 ·
Mechanics Thing(algebra craziness)
- naes213
- · Replies 2 ·
Solve rpm in rotational motion problem
- adca14
- · Replies 2 ·
Can i use a 1mA source to charge a 3V rechargeable battery?
- angeline_happy
- · Replies 25 ·
Why isn't the area of a ring \pi (2rdr + (dr)^2)?
- Hakins90
- · Replies 6 ·
Trajectory of an exploding shell
- Bizznaatch
- · Replies 2 ·
How much heat energy conducts through a solid to the other side?
- stevemclaren
- · Replies 6 ·
Projectile motion question with angles and velocity
- thedropsoffir
- · Replies 2 ·
Rocket Thrust From a Spring (Work)
- sam2k2002
- · Replies 9 ·
Angular acceleration of a flywheel coming to rest
- ohhi
- · Replies 4 ·
Linear Conservation of Momentum
- am08
- · Replies 2 ·
Understanding Short Circuiting in Electrical Circuits
- Gear300
- · Replies 3 ·
Relative Velocity of Astronauts After a Throw and Catch
- greyradio
- · Replies 3 ·
How Does Stretching a Wire Affect Its Resistance?
- Ajwrighter
- · Replies 7 ·
Billiards Ball Collision Analysis
- JonathanSnow
- · Replies 2 ·
Simple elastic particle problem
- seanistic
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Differentiation of potential energy
- zcabral
- · Replies 3 ·
Electric Force Between Water and Chlorine
- dchrisma
- · Replies 2 ·
Simple Harmonic Motion: Determine Velocity at t=0.250s
- Moe*
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Application of properties of the light
- rojasharma
- · Replies 2 ·
Relativistic Length Contraction in Three-Spacecraft Chase Scenario
- vachan
- · Replies 2 ·
Diffraction Grating wavelengths
- rojasharma
- · Replies 3 ·
Carts with different wheel sizes: which is easier to push?
- spkspkspkspk
- · Replies 4 ·
Problems with Electric Field questions
- User1247
- · Replies 3 ·