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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Horizontal force to move two stacked trunks at constant velocity
- phy_
- · Replies 6 ·
What is the net charge of the ball?
- elee123
- · Replies 3 ·
What Is Neptune's Scaled Radius in a Scaled Solar System?
- autumnrose3
- · Replies 2 ·
Engine force on 500 g rocket and go cart acceleration problems
- amandamolegir
- · Replies 2 ·
Newton's 3rd Law applied to binary stars
- Ki_Ryn
- · Replies 2 ·
ATTWOOD'S MACHINE (rope + pully)
- twenty5
- · Replies 16 ·
How Much Energy Does Ice Release When Cooled in a Freezer?
- roxxyroxx
- · Replies 1 ·
I didn't even learn this yet but got hw on TORQUE
- zell_D
- · Replies 13 ·
How to Find the Velocity Components After 10 Seconds?
- Ayesh
- · Replies 2 ·
Maximum force up a 45° ramp and perpendicular force to keep 22 kg box at rest
- zeion
- · Replies 14 ·
Finding velocity components of a dropped package from a plane
- timemachinez
- · Replies 7 ·
Momentum, enegy and collisions
- hellothere123
- · Replies 7 ·
What is the thinnest film for strong reflection of visible light?
- nubey1
- · Replies 3 ·
Satellite speed at perigee and apogee in elliptical orbit
- hellothere123
- · Replies 7 ·
Calculating Car Acceleration with Fuzzy Die
- Xenon29
- · Replies 3 ·
Calculating Capacitance in Parallel Circuits with AC Generator
- phys62
- · Replies 4 ·
Electric Current - Finding # of Electrons
- calvert11
- · Replies 3 ·
Potential on the inside of a hollow insulating sphere
- valarking
- · Replies 1 ·
Calculating the Density of a Floating Block of Wood
- littlkj5
- · Replies 7 ·
Electric field from two point charges and then some
- rowkem
- · Replies 1 ·
What Are the Forces in Equilibrium for a Weight Hanging on a Rod?
- laurids
- · Replies 3 ·
How Does a Cowboy Time His Jump to Land on a Galloping Horse?
- soccergirl14
- · Replies 5 ·
What is the new distance between the man and the shore after he switched seats?
- mrnastytime
- · Replies 1 ·
Analyzing Angular Motion in a Bicycle Wheel
- SkyChurch
- · Replies 5 ·
Distance for charge to travel through magnetic field
- bluedevil09
- · Replies 1 ·
Refraction and Mirrors, image position
- emg333
- · Replies 1 ·
What is tangential force in uniform circular motion?
- destro47
- · Replies 4 ·
Expression for the gravitational potential Vgrav
- c_m
- · Replies 5 ·
Induced current in parallel loop
- bluedevil09
- · Replies 5 ·
Sources of error in measuring length and mass
- Norah
- · Replies 2 ·
Conservation of energy of an oscilating system with friction
- Oijl
- · Replies 1 ·
Constructive and destructive interference from two radio sources 5 m apart
- kelaroo24
- · Replies 7 ·
Solving Loop in Mathematica for (u,i) Pairs
- Juliane
- · Replies 5 ·
Three spheres attached by conducting wire
- valarking
- · Replies 1 ·
Net Force of Point Charges, Coulomb's law
- kgigs6
- · Replies 3 ·
Relative Velocity and Acceleration
- pberardi
- · Replies 7 ·
How Many Electrons Generate the Charge in Coulomb's Law Problem?
- kgigs6
- · Replies 2 ·
Projectile Motion parabola effect
- .:Endeavour:.
- · Replies 7 ·
Weighing aluminum sphere in water as it cools using Archimedes' principle
- lmbiango
- · Replies 3 ·
Power absorbed when 2000W heater runs at 230V instead of 250V
- jakey
- · Replies 4 ·
Resistivity of tungsten filament
- rinarez7
- · Replies 3 ·
Orbital speed of Mars around the Sun
- zeion
- · Replies 5 ·
Rotation of a sphere-how can it happen?
- Ed Wiggins
- · Replies 1 ·
Rockets on a car's effect on velocity?
- zell_D
- · Replies 4 ·
Molar Heat Capacities and Specific Heats for Ideal Gases
- Nachore
- · Replies 11 ·
Atomic Mass of Rare Carbon Isotope: Solving the Puzzle
- phy112
- · Replies 3 ·
Direction of electron in magnetic field?
- vrobins1
- · Replies 2 ·
Understanding Elastic Collisions: Solving a Head-On Collision Problem
- cybernerd
- · Replies 2 ·
Solving for time in projectile motion equation
- AudioGeek
- · Replies 2 ·
Solve 500g Falling Rock Problem: Initial Speed
- cybernerd
- · Replies 3 ·
Finding aluminum wire resistance at 600°C from resistivity
- jony529
- · Replies 5 ·
Circuit analysis - Finding the currents
- hadoque
- · Replies 3 ·
How Does Friction and Incline Angle Affect a Sliding Box's Motion?
- blazeuofa
- · Replies 1 ·
Gauss's Law: An line of charge and a sphere, find flux
- Breedlove
- · Replies 3 ·
Exploding Object Problem: Solving for the Speed of the Third Fragment
- shadowice
- · Replies 2 ·
Kirchhoff's Rules and terminal voltage
- Kandycat
- · Replies 5 ·
Finding total mechanical energy of a moving ball above ground
- cybernerd
- · Replies 2 ·
Solve Ballistic Pendulum Height Problem
- shadowice
- · Replies 6 ·
How much work must you do to change length of spring?
- enchanteuse
- · Replies 6 ·
Deriving tangent from sine and cosine in banked curve friction
- CINA
- · Replies 1 ·
How Much Static Friction is Needed for a Penny to Stay on a Rotating Record?
- DoctorB2B
- · Replies 1 ·
What is the final rotational speed of the double rotating disks?
- Trentonx
- · Replies 2 ·
Head-on collision of two carts with different masses
- Oscar Wilde
- · Replies 6 ·
Calculating Energy Required for Temperature Change of Substance
- Raihn
- · Replies 10 ·
Electric Potential of a Finite Rod
- eckz59
- · Replies 3 ·
Sound Waves dropping a rock into a well
- newfie88
- · Replies 5 ·
Finding Mass and Velocity on an Inclined Plane
- DoctorB2B
- · Replies 2 ·
Kinematics problem: stopping distance and time for a 2500 kg car
- Eric1234
- · Replies 3 ·
How Does Conservation of Momentum Determine Speed After a Collision?
- Crichar1
- · Replies 7 ·
Magnetic Flux of Earth onto myself
- carrotcake10
- · Replies 6 ·
Potential Energy of a single particle
- yb1013
- · Replies 11 ·
Gauss's law, determing average volume charge density
- Breedlove
- · Replies 1 ·
How is the entropy of the solar system increasing?
- roxxyroxx
- · Replies 1 ·
Finding coefficient of friction and the mass
- perez1028
- · Replies 6 ·
Thermodynamics- carnot engine power
- emg333
- · Replies 1 ·
Van and car collision: why is my momentum answer wrong?
- cybernerd
- · Replies 2 ·
Work and Kenitic Enegry problem
- gpr
- · Replies 1 ·
Stone on pendulum: speed at 62° and maximum swing angle
- ChazyChazLive
- · Replies 2 ·
Electron in a magnetic field and angular momentum
- Munky
- · Replies 3 ·
Astronaut With Gun and Circular Motion
- Univarn
- · Replies 5 ·
How to find the current and equivalent resistance in a parallel circuit
- itsmarasilly
- · Replies 2 ·
Finding release height for golf ball to land 1m away
- Shiz Stain
- · Replies 31 ·
Scalar product of position vectors
- nokia8650
- · Replies 3 ·
Minimum initial speed for box to reach stranded skier on incline
- xgoddess210
- · Replies 3 ·
Calculating Average Force on a Baseball Using F=ma Formula
- Crichar1
- · Replies 2 ·
How Does Removing a Dielectric Affect Capacitor Energy?
- SoulofLoneWlf
- · Replies 1 ·
Series and parallel resistor circuit analysis
- shemer77
- · Replies 13 ·
Finding exhaust temp in heat engine problem (entropy)
- aussie-girl
- · Replies 1 ·
Bullet passing through a 450 kg target: time, force, and target speed
- julz3216
- · Replies 4 ·
Ampere/Maxwell law capacitor problem
- mcshadypl
- · Replies 2 ·
What Is the Maximum Force Exerted by the Floor on the Ball?
- julz3216
- · Replies 3 ·
How Do You Calculate the Initial Velocity of a Car in a Perpendicular Collision?
- eltavo809
- · Replies 1 ·
Finding mass of ice in latent heat of fusion problem
- aussie-girl
- · Replies 6 ·
What is the wavelength of waves in shallower water?
- newfie88
- · Replies 3 ·
What Is the Power Output and Thermal Efficiency of This Heat Engine?
- j88k
- · Replies 9 ·
Solving for the Direction of an Electron in a Magnetic Field
- phy112
- · Replies 4 ·
N (Intro 1)Tennis Ball Rebound: Force on Ball During Collision
- julz3216
- · Replies 3 ·
Energy stored in a parallel-plate capacitor with constant voltage
- SoulofLoneWlf
- · Replies 1 ·
Calculating Kinetic Energy Change on a Ramp: KE and Friction Homework Solution"
- gansta344u
- · Replies 6 ·
Quantum mechanics scattering problem
- Vuldoraq
- · Replies 5 ·