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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Force on a Point Charge in an Electric Field
- wheybags
- · Replies 9 ·
Calculating Velocity, Acceleration, and Net Force for a Bungee Jumper
- cary5
- · Replies 6 ·
Egg Car Project: Build a Car and Egg for Class
- Maleeha
- · Replies 3 ·
Spring/Mass/Oscillation problem
- loganblacke
- · Replies 1 ·
Work in moving a satellite's orbit
- gboff21
- · Replies 2 ·
Estimating Flattening of the Earth
- Fightfish
- · Replies 1 ·
Energy Needed Per Second to Sustain a Velocity through a Liquid
- Oijl
- · Replies 1 ·
Equilibrium of Two People Holding Uniform Beam
- nameVoid
- · Replies 3 ·
Percentage change in intensity for a +2.00 dB increase
- dvolpe
- · Replies 2 ·
What is the magnitude of upthrust force on a metal ball immersed in water?
- bejoulais
- · Replies 2 ·
Fill factor of a photovoltaic cell
- wisdom32
- · Replies 2 ·
Finding Tension in a Simple Crane System
- XxseanxX_22@h
- · Replies 5 ·
Finding bullet speed from collision with hanging wooden block
- Hypnos_16
- · Replies 9 ·
What is the final velocity of the car in an elastic collision?
- Hypnos_16
- · Replies 17 ·
A problem involing an LC circuit
- funoras
- · Replies 3 ·
How Long Does It Take a Package to Travel Through a Planet in a Gravity Tunnel?
- chaotixmonjuish
- · Replies 4 ·
Pulley problem with moment of inertia
- howsockgothap
- · Replies 1 ·
How does halving sugar concentration affect light transmission through crossed polarizers?
- chadders8903
- · Replies 2 ·
Rotational Frequency [figure skater]
- otonh210
- · Replies 16 ·
Solving a Collision Problem: 10,000 kg Locomotive & 620 kg Automobile
- BobbyTee
- · Replies 2 ·
Show that the wheel weight is 180N given force to move it over kerb
- aurao2003
- · Replies 1 ·
Pendulum problem only the rope breaks
- drmumma
- · Replies 3 ·
How Does Entropy Change in an Isothermal Process for an Ideal Gas?
- Deathcrush
- · Replies 7 ·
Does Increasing Hole Density in an NPN Transistor Base Decrease Beta?
- snabelpablo
- · Replies 2 ·
How do you find final velocity with initial velocity and energy gained?
- lanruoer
- · Replies 1 ·
Comparing brightness of 100W and 50W bulbs in parallel and series
- ana111790
- · Replies 5 ·
Calculate Coefficient of Friction for Frozen Turkey on Snow
- mrs. drake
- · Replies 1 ·
5 Slit Experimen: Probability Distribution Function
- zheng89120
- · Replies 1 ·
What are some strategies for understanding and completing homework problems?
- TeaWay
- · Replies 4 ·
How Do Two People Balance a Uniform Beam at Different Distances?
- nameVoid
- · Replies 1 ·
What is the Change in Internal Energy for a Cyclic Process on a PV Diagram?
- uchicago2012
- · Replies 2 ·
Friction coefficient for turkey in snow, collision impact, and hill slide problems
- mrs. drake
- · Replies 1 ·
Rotational Motion on an Inclined Plane
- UMich1344
- · Replies 3 ·
What is the Moment of Inertia for a Solid Door?
- howsockgothap
- · Replies 5 ·
Angular momentum of disk and clay before impact
- Kibbel
- · Replies 11 ·
Adiabatic/Isentropic Compression and Pressure
- Sangueshotto
- · Replies 2 ·
Solve Cable Torque Problem: Find Hcomponent Force on 23.8 kg Beam
- Jm4872
- · Replies 1 ·
Scale reading for 60 kg man in upward accelerating elevator
- jey1234
- · Replies 1 ·
Why is the 1/2 important in the equation Ek = 1/2mv^2?
- FakeGeek
- · Replies 1 ·
Free-Fall Acceleration and the Gravitational Force
- hold AP 2010
- · Replies 3 ·
Calculating average fuel consumption for truck, train and airplane routes
- Pruzhinkin
- · Replies 4 ·
Help with quantum mechanics homework problem
- bon
- · Replies 2 ·
Archimedes' Principle-Gold Crown problem
- mchesypoof
- · Replies 4 ·
Children walking toward center of rotating platform: angular velocity and energy change
- robert6774
- · Replies 5 ·
Is Total Energy Always Double the Kinetic Energy in Quantum Mechanics?
- bon
- · Replies 3 ·
Conceptual Photoelectric Effect Question
- trogtothedor
- · Replies 11 ·
Quantum Question (dirac notation)
- bon
- · Replies 12 ·
Calculating the Mass of a Binary Star System
- coltsamuel96
- · Replies 1 ·
Is There Average Power Transfer on Standing Waves?
- aim1732
- · Replies 1 ·
Calculating Speed to Reach 1.11 fm from Oxygen Nucleus
- Tina20
- · Replies 6 ·
Find Mass of Passenger Train in Wagon Collision
- coltsamuel96
- · Replies 5 ·
Calculate Energy of Neutron Wavelength 0.1nm
- bon
- · Replies 1 ·
Uniform electric field. Find the potential difference
- Bearbull24.5
- · Replies 3 ·
Conservation of energy of a bike uphill
- ubuntu2
- · Replies 8 ·
Where to Place a Negative Charge for Zero Electric Field at the Origin?
- Bearbull24.5
- · Replies 3 ·
Stepped Pulley: Angular and Linear Acceleration
- robert6774
- · Replies 2 ·
What is the tension force in each block on an incline?
- sash187
- · Replies 5 ·
Seemingly simple projectile motion problem.
- tempneff
- · Replies 8 ·
How Is Volume Affected by Pressure in an Ideal Gas?
- MozAngeles
- · Replies 6 ·
Calculating Normal Force Exerted by Floor on Feet/Hands
- Hypnos_16
- · Replies 1 ·
Final temperature of diatomic gas compressed adiabatically to 40% volume
- uchicago2012
- · Replies 2 ·
Analyzing Falling Rod Motion: Angular Velocity and Tip Speed
- roman15
- · Replies 2 ·
Magnitude of the greater of 2 resistors?
- Bearbull24.5
- · Replies 3 ·
Finding a good explination of the physics of rollercoasters
- piareround
- · Replies 1 ·
Escaping the solar system from Earth's orbit
- irishbob
- · Replies 8 ·
How to start a fluorescent lamp with a defective starter
- Je m'appelle
- · Replies 1 ·
Energy dissipated as heat during a time interval over resistor with constant pot. dif
- Bearbull24.5
- · Replies 1 ·
Work function of a cathode, when the wavelength of light is increased by 50%
- Tina20
- · Replies 5 ·
Sound Intensity Problem of 3 Machines
- dvolpe
- · Replies 1 ·
Constant-volume gas thermometer
- Rblswimmer456
- · Replies 3 ·
Sum of the friction and normal forces mechanics problem
- luiseduardo
- · Replies 5 ·
Understanding Degenerate Eigenvalues and Vectors in Math Operations
- bon
- · Replies 3 ·
Skiing Up a Hill: Work Done by Friction
- Hypnos_16
- · Replies 5 ·
How Is Central Acceleration Calculated for Uniform Circular Motion?
- Ockonal
- · Replies 3 ·
What Would Happen If Earth's Attraction Suddenly Stopped?
- vissh
- · Replies 7 ·
Will the frame be inertial if no forces act on it?
- vissh
- · Replies 4 ·
Bead on frictionless wire: height for 4.5 m/s and fastest angle
- Broodwich08
- · Replies 1 ·
Van De Graff Generator: Explanations to why object repel generator
- jamba88
- · Replies 1 ·
Center of mass problem with rotation
- irishbob
- · Replies 1 ·
How Does Temperature Affect the Expansion of a Rectangular Plate?
- Rblswimmer456
- · Replies 3 ·
Ice/water thermodyamics confusion
- luke850
- · Replies 7 ·
Unit Conversion: Solving for Speed of Water Flow
- smray7
- · Replies 3 ·
Basic Kinematics: Analyzing Distance v Time and Distance v t^2 Graphs
- dauerbach
- · Replies 3 ·
Finding the Time to Cross a River: Solving Vector Problems in Motion
- soicuw
- · Replies 1 ·
Kepler's Laws and the Motion of Planets
- hold AP 2010
- · Replies 2 ·
Solving for the Amount of Heat in Calories
- whilliam
- · Replies 1 ·
Newton's Second Law: (Major Flaw in Lab)
- anth0ny
- · Replies 3 ·
How Much Force is Needed to Move a 50kg Box with Friction and Acceleration?
- sbesner
- · Replies 3 ·
Identifying components in a black box with 12 unknown terminals
- Verlon
- · Replies 3 ·
Way to find acceleration if I know the kinetic energy
- jimmy42
- · Replies 10 ·
Rotation of a Rigid Object about a fixed axis
- XwakeriderX
- · Replies 1 ·
Finding the Specific Heat Capacity
- McKeavey
- · Replies 3 ·
How long does it take to move a box of books across the floor?
- Leeee
- · Replies 1 ·
Maximum force on 11kg block before 5.13kg block slips
- Hypnos_16
- · Replies 10 ·
Special relativity, time dilation and rockets
- mikep1992
- · Replies 1 ·
Projectile Motion - rocket launched, engine, fail
- dandy9
- · Replies 7 ·
How Do You Calculate Net Force on a Block on a Ramp?
- MysticDude
- · Replies 12 ·
Ball rotating on spring with changing velocity and radius
- TN17
- · Replies 6 ·
2 balls and the height of a building
- blacksilver5
- · Replies 2 ·