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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Electric Field of +4.0*10^-9 C in 1600 N/C Field
- Expresso
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Finding launch angle for projectile reaching 10m vertical and 7.12m horizontal
- jillz
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Torque, energy, and average power
- schrodinger
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True/False: Theory of Relativity Questions
- dietcokemaste
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Airplane dropping supply crate from 1001 m
- leftyguitarjo
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How Does a Rolling Ball's Velocity Change with Constant Acceleration?
- Jess048
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Relativity, space contraction and rotation
- imphat
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Ball oscillating through a straight tunnel in Earth
- yasar1967
- · Replies 6 ·
Electric Potential: Calculating Work to Move Charge from P to Infinity
- mirsees
- · Replies 1 ·
Equilibrium and Elasticity problem hw due tomarrow
- brett812718
- · Replies 5 ·
Gravitational force between 2 people
- ital_dj
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How do I find the work and power if I have a mass in Newtons?
- MoreZitiPlease
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Finding vertical force component with center of mass offset
- klopez
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Finding friction force on a dragster from acceleration and driving force
- ital_dj
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Waves: velocity, frequency, wavelength
- bleucat
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True or false: index of refraction and relativistic velocity addition
- dietcokemaste
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Net Force of object changing velocity
- ital_dj
- · Replies 6 ·
How to Solve a Gauss' Law Problem in a Spherical Region?
- dpd069
- · Replies 2 ·
Calculating Work: Pushing a Block Up a Frictionless Incline
- featherua08
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What is the relationship between work, power, and lifting an object?
- MoreZitiPlease
- · Replies 4 ·
What font should I use for lab reports?
- MoreZitiPlease
- · Replies 1 ·
Conservation of energy of an elevator cable
- iamkristing
- · Replies 5 ·
Challenging Problem - System of Masses - Try It
- coolchewy
- · Replies 2 ·
Electric Potential and Spheres
- cjosephson
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What Is the Capacitance of a Parallel-Plate Capacitor with Circular Plates?
- physicsbhelp
- · Replies 6 ·
Some more magnetic field/induction questions
- cse63146
- · Replies 26 ·
Electric Conductors and Storage
- sparkscience
- · Replies 2 ·
How Is Work Calculated in a Diesel Engine Thermodynamic Cycle?
- EngNoob
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Calculating Impulse and Average Force for a Ball Dropped on a Floor
- iamkristing
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Recording power and lumens for light bulbs.
- pebbles
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Finding inner radius a to minimize max electric field in coaxial cable
- jesuslovesu
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How Do Equilibrium Conditions Relate to Forces in a Bridge Member?
- student45
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Optics: Distance of Key in swimming pool
- circle_square
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NPN Transistor: Facts, Power Supply, Queisecent Point
- sanado
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Can You Calculate the Pinger's Angle Using Hydrophone Data?
- Number2Pencil
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Skier gliding on horizontal snow after descending a hill
- netwerky
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Static Equilibrium - board problem
- Seraph404
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Man Walks Up Stairs: Work Done?
- cronusmin
- · Replies 5 ·
Why Does Plate Separation Affect Capacitance?
- Djenko
- · Replies 2 ·
Calculating Maximum Lead Shot Capacity of Tin Can
- drobtj2
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Finding net force from three point charges
- petern
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Beam Deflection in a Television Tube
- daimoku
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Making current and voltage in phase
- snoweangel27
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Simple Harmonic Motion of a gun
- peaches1221
- · Replies 5 ·
Why Does the Equation mg = mv^2/r Work for Calculating Satellite Altitude?
- ys2050
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Some magnetic field/induction questions
- cse63146
- · Replies 13 ·
Calculating Transverse Velocity of a Star
- grscott_2000
- · Replies 2 ·
How Do You Calculate Tension in a Wrecking Ball Support Cable?
- BMK
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Zero Torque and Static Equilibrium pulley problem
- just.karl
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Two-stage Carnot engine efficiency with three temperatures
- LandOfStandar
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What is the Time Constant for a Capacitor Circuit with Changing Capacitance?
- jcpwn2004
- · Replies 17 ·
How Do You Calculate Young's Modulus from Wire Stretching Data?
- cstout
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Motion in two dimensions question. At wit's end.
- Hekmat123
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Rotational kinematics and energy
- dethbyphysics
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Rolling Motion without slipping Problem
- adca14
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Magnitude of change in linear momentum
- studypersist
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How Do You Calculate the Electric Force on a Charge at the Corner of a Square?
- bastige
- · Replies 9 ·
Calculating Photon Detection in Radiation Physics with 30 Degree Incident Angle
- _Andreas
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Ridid body equilibrium, tension in hanging wires
- clope023
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Solving Pushing Two Blocks Kinetic Energy
- nitrik
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Optical process in semiconductors
- Defennder
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What is the Limiting Velocity of an Electric Toy Car with Constant Power?
- alice137
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Time dilation on Helios satellite traveling to Jupiter
- wowolala
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Heat transfer of stainless steel
- bill nye scienceguy!
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Energy to heat 100 m³ of diatomic air by 1°C in insulated house
- ~christina~
- · Replies 1 ·
What is the magnitude of the Reaction Force?
- jj8890
- · Replies 1 ·
Calculating Magnetic Field of a Toroid Using Ampere's Law
- snipaj9696
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Effect of Melting Bob on Pendulum Time Period?
- proyasha
- · Replies 9 ·
Solving Capacitor Questions with Different Plate Areas
- jcpwn2004
- · Replies 8 ·
Easiest Cylinder to Balance - angular acceleration
- mike115
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Minimum initial velocity for box to reach skier on 30° incline
- ochatesme
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Finding amplitude in SHM for a mass on a spring
- chukie
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How Strong is the Magnetic Field of a Bar Magnet at a Distance?
- cse63146
- · Replies 4 ·
What is the induced emf in a coil in a changing magnetic field?
- cse63146
- · Replies 17 ·
Magnitude of force. solving for x
- bastige
- · Replies 4 ·
Simple Energy conservation, PE = KE + PE
- Scrum
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How Do You Calculate the Final Temperature of a Metal and Water Mixture?
- defult986
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How Does Light Travel Through Different Media?
- BuBbLeS01
- · Replies 7 ·
Car driving around a banked curve (with friction)
- TA1068
- · Replies 3 ·
What is the width of the aperture?
- BuBbLeS01
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Solve Ray Tracing Problem: Image Location for 6.3 cm from Convex Mirror
- BuBbLeS01
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Elasticity and simple harmonic motion
- peaches1221
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Max Angle of Incidence for Light Ray in Water-Glass System
- BuBbLeS01
- · Replies 2 ·
Deriving angular frequency for simple harmonic motion
- AlexYH
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Conceptual Question on Net Torque
- klopez
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Moment of Inertia/ Kinetic Energy of ice skater
- klopez
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Potential Energy and energy conservation
- kyin01
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How Do You Calculate Current in a Half-Full Gasoline Gauge?
- potato987
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Solving String Tension: Wavelength, Speed and Frequency
- gillyr2
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Strength of electrostatic force
- bastige
- · Replies 3 ·
Copper penny failling between poles of magnet
- bishy
- · Replies 3 ·
Train Question: Max Acceleration 0.756m/s^2
- madahmad1
- · Replies 2 ·
What does x = 1/2gt² + v₀t + x₀ represent and what is g?
- hamudi786
- · Replies 11 ·
What are the effects of different braking scenarios on cars and occupants?
- Keith Warron
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Lets say you have a system with four capacitors(c1,c2,c3,c4)
- eyehategod
- · Replies 3 ·
Curious Case of the Spinning Flywheel Briefcase
- louie3006
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Calculate Magnitude of Torque for Flywheel
- sealedhuman77
- · Replies 1 ·
Is Ball Bouncing Considered Simple Harmonic Motion?
- bpw91284
- · Replies 4 ·
Center of Mass and Moment of Inertia
- sealedhuman77
- · Replies 3 ·
Rotational Energy of 3 Point Masses along a Rigid Rod
- shenwei1988
- · Replies 1 ·