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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What is the Equilibrium Temperature When Mixing Hot and Cold Water?
- moragan
- · Replies 4 ·
Why Is Sin A Used in the Cross Product Equation F=qvBsinA?
- glueball8
- · Replies 1 ·
Finding b for a Ball with Non-Uniform Density on a Circular Loop
- bodensee9
- · Replies 6 ·
Charge velocity and current density
- Defennder
- · Replies 4 ·
Static Equilibrium Beam/supports?
- 0338jw
- · Replies 12 ·
What is the Tension in a Two-Block System?
- spidey12
- · Replies 16 ·
What is the Maximum Torque on a Flat Coil in a Magnetic Field?
- purduegirl
- · Replies 7 ·
Why Is Calculating the Force on a Skier So Challenging?
- spidey12
- · Replies 2 ·
Rotational motion conservation of energy; time
- 0338jw
- · Replies 11 ·
Rotational motion, moment of inertia yoyo problem. PLEASE HELP
- 0338jw
- · Replies 13 ·
Force exerted on walls of metal box
- Rubidium
- · Replies 10 ·
Solving Frictionless Masses: Find F & Accelerations
- asi123
- · Replies 8 ·
Calculating Net Force on a Solar Sailplane Traveling from Earth to Mars
- ally1h
- · Replies 2 ·
What is the correct formula for calculating launch speed off of the Earth?
- baylorbelle
- · Replies 11 ·
How to Calculate Speed Using Faraday's Law
- Laurie01
- · Replies 8 ·
Calculating 'Push' Force to Maintain Constant Speed
- Laurie01
- · Replies 4 ·
Help Me Understand the Velocities and Collisions of Three Identical .5 lb Balls
- prdoring
- · Replies 4 ·
Physics-Motion and Gravity Help
- lilaSA
- · Replies 8 ·
RC Circuit - Currents at Timed Intervals
- purduegirl
- · Replies 3 ·
Solve RC Circuit Discharge Homework: 6V, 60Ω, 0.02F
- purduegirl
- · Replies 9 ·
Inertia balance/restoring force
- medguy1234
- · Replies 2 ·
Energy in Capacitor: Calculate Stored & Dissipated Energy
- purduegirl
- · Replies 9 ·
Rotational motion of rotating disc
- zila24
- · Replies 12 ·
Help with Water, Ice, and metal finding temperature
- raymondmorrow
- · Replies 5 ·
Elastic Potential Energy homework
- bb1235
- · Replies 2 ·
What Force Constant Is Needed for Exercise Equipment to Achieve Specific Torque?
- baylorbelle
- · Replies 5 ·
What Does Force Represent in the Equation P=Fv?
- nokia8650
- · Replies 1 ·
Confused with Simple Equation 1: Need Help Finding Initial Velocity
- Kristin_Z
- · Replies 8 ·
Circuit Analysis - Solving for unknown Voltage
- salman213
- · Replies 2 ·
Magnetic Field at a distance from the center of a Torodial Solenoid
- clope023
- · Replies 6 ·
Wave Theory Explains Radio Tower Collapse & Prevention Strategies
- pooka
- · Replies 6 ·
How Fast Does a Flywheel Spin in a Stopping Hybrid Car?
- madmike1
- · Replies 7 ·
Calculating Flywheel Speed in a Hybrid Vehicle: A Homework Challenge
- bakoo
- · Replies 3 ·
Solving Homework Equations Involving A & B
- student 1
- · Replies 10 ·
Verticle Banking on a circular track
- physicsnoob93
- · Replies 2 ·
What is the angular momentum of an electron
- pooka
- · Replies 2 ·
What Happens When Two Identical Balls Collide at Right Angles?
- ace123
- · Replies 10 ·
"Understand Motion of Block on Turntable
- student 1
- · Replies 3 ·
Solving OCR M2 Questions: Bullets and Equations
- i25959341
- · Replies 4 ·
Understanding Diving Board Physics: Debunking the Work Debate
- Vikingjl11
- · Replies 2 ·
Weight of a lion standing on th earth
- tim_mannire
- · Replies 6 ·
What is the Motion of the Center of Mass in a Billiard Ball Collision?
- zila24
- · Replies 19 ·
What are the speeds and compression in a collision with a spring?
- loststudent0
- · Replies 2 ·
Calculate Pressure in a Star at Center
- Irid
- · Replies 4 ·
Easy problem, but cant figure it out
- spidey12
- · Replies 20 ·
Sliding heavy crate across rough floor
- tim_mannire
- · Replies 1 ·
Finding Mass from Weight: 1.47 x 10^2 N
- tim_mannire
- · Replies 7 ·
How Do Newton's 3rd Law and Skating Illustrate Action-Reaction Forces?
- tim_mannire
- · Replies 1 ·
Object subjected to constant force, determine the force
- student 1
- · Replies 8 ·
Find David's Velocity w/ Respect to John: Relative Velocity Homework
- student 1
- · Replies 2 ·
Linear speed and rotational quantity
- baylorbelle
- · Replies 3 ·
How Do You Calculate Electric Flux Through a Paraboloidal Surface?
- TheChicken
- · Replies 5 ·
How to Derive Beam Deflection Formula for a Double Cantilever Simple Beam?
- ***ALLI***
- · Replies 2 ·
Free-Body Diagrams: Solving for Tension and Weight
- unscientific
- · Replies 1 ·
Minimum Glass Thickness (m) for Light of l=610nm, d=1.30mm, L=2.00m, n=2.2
- pooka
- · Replies 1 ·
Find Line Intersecting Line 1 & 2 at 90°: Vector, Parametric & Symmetric Eqs
- Failure007
- · Replies 4 ·
Calculating Spring Compression from 1m Jump on Scale
- ace123
- · Replies 8 ·
Relativistic Doppler Shift and a Star breaking up
- TFM
- · Replies 68 ·
Mechanical energy of a sliding block
- Vikingjl11
- · Replies 8 ·
Calculating Temperature Uncertainty - Help Needed!
- JoshMG
- · Replies 1 ·
Projectile Motion Cannon Question
- NBAJam100
- · Replies 2 ·
Calculating the A value of a physical pendulum
- ttk3
- · Replies 5 ·
Net Force on Sailplane from Earth, Sun & Radiation: Calculate Now
- ally1h
- · Replies 10 ·
Question about accelerating movement
- pc2-brazil
- · Replies 3 ·
Moving Proton in an Electric Field problem
- purduegirl
- · Replies 1 ·
What Is the Initial Phase Angle Beta in Wave Propagation?
- efairall
- · Replies 3 ·
Basic question on length contraction.
- pc2-brazil
- · Replies 2 ·
What does the scale read when two 100N weights are attached to a spring scale?
- alex_the_seal
- · Replies 4 ·
How Can a Toroid Approximate a Solenoid in Limiting Conditions?
- Chris W
- · Replies 4 ·
Propagating wave find initial phase angle?
- efairall
- · Replies 1 ·
Maximizing Disc Storage: The Impact of Laser Beam Width on Information Capacity
- ah lai
- · Replies 1 ·
Pulley / conservation of energy problem (should be really easy)
- fvertk
- · Replies 24 ·
How Do You Calculate the Charge on a Capacitor in Series?
- purduegirl
- · Replies 1 ·
Design a 4.50e-7 C Capacitor w/ 220V & 0.375 m2 Plates
- purduegirl
- · Replies 1 ·
Physics: Efficiency of toy car going upwards on a slope
- sciencerules
- · Replies 2 ·
What Is the Net Downward Force on a Water Tank's Bottom on Mars?
- mantillab
- · Replies 7 ·
Calculate qout: Angle of Reflection in Two Mirrors
- pooka
- · Replies 7 ·
Finding M in an Equilateral Triangle of Gravitating Spheres
- zila24
- · Replies 10 ·
Figuring out the direction of a magnetic field
- uday28fb
- · Replies 2 ·
What is the Coefficient of Kinetic Friction in These Physics Problems?
- Rade1990
- · Replies 6 ·
Why charges inside a solid metallic sphere tend to go to the surface?
- shanu_bhaiya
- · Replies 4 ·
Two little questions about friction
- Mr.Barker
- · Replies 1 ·
Calculating Energy in a Capacitor with +Q and -Q Charges
- pooka
- · Replies 9 ·
Determining static equlibrium reactions
- martix
- · Replies 4 ·
Cartesian vector application involving two forces.
- Failure007
- · Replies 4 ·
Newton Third Problem Ball on a Scale - part 2
- Sabellic
- · Replies 4 ·
How Far Does a Pellet Fly After Midair Explosion?
- bodensee9
- · Replies 10 ·
Question from Problems in General Physics (Irodov)
- vijay_singh
- · Replies 3 ·
Help Projectile Motion and High Speed Camera
- wjlancas
- · Replies 10 ·
Solubility of a gas in water Kinetic Molecular Theory
- daNAV1GATOR
- · Replies 2 ·
Conservation of Energy ski jump problem
- akoma714
- · Replies 7 ·
Will a Metal Sphere's Charge be Uniformly Distributed?
- chukie
- · Replies 6 ·
Newton's 2nd Law for a Particle in Uniform Circular motion
- clintau
- · Replies 10 ·
How Strong is the Attraction Between Two Humans After Electron Transfer?
- chukie
- · Replies 2 ·
Solving for Total Magnetic Flux and Induced EMF
- rock.freak667
- · Replies 1 ·
Work Question - Is something missing?
- Sabellic
- · Replies 5 ·
Solve Pith Ball Charge: Equal Charges on Two Balls
- chukie
- · Replies 4 ·
Solving Masses and Pulley for Acceleration and Tension
- 00PS
- · Replies 2 ·
Baseball Player Hits Home Run: Calculating Velocity and Flight Time
- dralion87
- · Replies 2 ·
How Can I Solve These Rotational Kinematics Problems?
- HT3
- · Replies 3 ·