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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Potential Difference across a resistance
- Differentiate1
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What Angle Should You Aim the Launcher to Hit a Target 10 cm Above the Floor?
- Esoptron
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Calculating Mass Defect of Americium-244
- Daisy
- · Replies 4 ·
Circuit analysis - two sources of emf
- Miss_e101
- · Replies 5 ·
Stirling Approximation for a thermodynamic system
- Demroz
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How Do You Model a Spring/Mass/Damper System with No Friction?
- Neofit
- · Replies 6 ·
Uniform Circular Motion of a Spherical Earth
- Gabble1
- · Replies 2 ·
Energy problem (compression of a spring)
- Wellenbrecher
- · Replies 6 ·
Power required to drive up a hill
- anthonyk2013
- · Replies 19 ·
Torque and static equilibrium beam with weights
- matermultorum
- · Replies 5 ·
How Do You Calculate the Maximum Angle of Inclination After a Collision?
- psstudent
- · Replies 10 ·
Electric field of point charge dipole and ring using multipole expansion
- Frank Einstein
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Direction of E-Field in 3d space
- Zaent
- · Replies 3 ·
Complex Moment of Inertia Calculation
- k2kyo
- · Replies 3 ·
Locating a Fault in an Underground Cable: A Voltage-Based Approach
- harbour
- · Replies 5 ·
Physics extended essay topics in aerodynamics
- Popeye 21
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Calculating Air Density and Temperature in a Hot Air Balloon
- toothpaste666
- · Replies 6 ·
What is the change in the internal energy of the water?
- toothpaste666
- · Replies 4 ·
What is the tension of the string needed for a 440 Hz fundamental frequency?
- toothpaste666
- · Replies 7 ·
When is Faraday's law independent of Ampere's law?
- atomicpedals
- · Replies 4 ·
Finding angular frequency and amplitude from a pendulum graph
- michaeltozer13
- · Replies 2 ·
Four bodies connected through a sheave
- Chemist@
- · Replies 5 ·
What is the energy loss of damped oscillator
- grandpa2390
- · Replies 5 ·
What is the minimum frequency to keep the mass moving?
- Smartgurl
- · Replies 9 ·
Cube sliding down with frictionless slide
- Nikou
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Center of Mass Calculation for a Club-Axe: How Far from the Handle is the COM?
- michaeltozer13
- · Replies 3 ·
How Is Power Calculated for a TIR Moving at Constant Velocity?
- AlexPilk
- · Replies 11 ·
Insolation, efficiency, and area
- EnergyKitty
- · Replies 1 ·
Oscillation Problem: Find Period and Potential Energy
- Misheel
- · Replies 4 ·
How Accurate Is the Calculated Friction Force for a Sled Sliding Down a Hill?
- AlexPilk
- · Replies 3 ·
Exam question that I have no idea how to solve (regarding forces and mass)
- kiloNewton
- · Replies 6 ·
Plank problem/Center of Gravity/Torque/Level Arm(p.26)
- gcombina
- · Replies 5 ·
Snell's Law: Dispersion Light Angle Refraction
- camel-man
- · Replies 1 ·
Find Max Mass B for Mass A to Move on Slope of 30°
- Mary O'Donovzn
- · Replies 3 ·
Gravitation above and below the earth's surface
- erisedk
- · Replies 10 ·
Empty Box with Plumb Bob Sliding Down a Plane
- Karina
- · Replies 10 ·
Why is normal force the average force in pile driver problem?
- LuckyIam
- · Replies 2 ·
How does friction affect the acceleration of a moving box?
- hacker804
- · Replies 7 ·
Energy efficiency, Transformer?
- Daisy
- · Replies 3 ·
Kinetic Enegry and Hydrogen Atoms
- ljucf
- · Replies 9 ·
Calculate the tension in a tube
- Quantum Fizzics
- · Replies 3 ·
Linear Momentum Algebraic interpretation
- brycenrg
- · Replies 3 ·
What is the correct formula for solving time in free fall?
- ammora313
- · Replies 24 ·
Friction force : determining coefficient of friction
- kakaiwasula
- · Replies 2 ·
Verifying Solutions to Newton's Equation for a Harmonic Oscillator
- terp.asessed
- · Replies 2 ·
How Much Hydrogen Is Needed for a Balloon to Float at 10km Altitude?
- cycrups
- · Replies 22 ·
Perpendicular wires carrying current, torque
- caimzzz
- · Replies 1 ·
Kinetic Energy -- when a moving lorry breaks to avoid a collision?
- Charlotte2014
- · Replies 3 ·
Parallel Resistors (special cases formula)
- zug
- · Replies 1 ·
What Angle Causes a Block to Topple on an Inclined Plane?
- Satvik Pandey
- · Replies 48 ·
Magnetic Force on Wire 2: Verification Needed
- mathguy831
- · Replies 1 ·
Oscillatory motion of two masses connected by a spring on frictionless track
- grandpa2390
- · Replies 3 ·
How Does Increasing Friction Affect the Movement of a Box on an Inclined Plane?
- BOAS
- · Replies 13 ·
Vector description of motion around a bend
- ianperez
- · Replies 7 ·
Is it possible to find the tension force without mass?
- Nerdydude101
- · Replies 6 ·
Finding the distance between two points in terms of variables
- dapiridoob
- · Replies 1 ·
Energy of a car going up a hill
- anthonyk2013
- · Replies 4 ·
Biot-Savart and a Rectangular Loop
- mathguy831
- · Replies 3 ·
How much power is delivered to a circuit by a battery?
- squelch
- · Replies 4 ·
Finding the electric field at a point in between 3 electrodes
- kwozz48
- · Replies 2 ·
De Broglie Wavelength Calculation for an Electron with 120 eV Energy
- bennyq
- · Replies 2 ·
Water flow in pipe with two open vertical offshoots
- rlc
- · Replies 15 ·
Electric field on surface of the Earth due to solar radiation
- fayled
- · Replies 3 ·
Gravitational Acceleration Question
- jb2000tj
- · Replies 1 ·
Airplane pilot in a dive, net force, minimum speed, and normal force.
- timnswede
- · Replies 5 ·
What Is the Maximum Height Achieved by Mass M1 After Elastic Collision?
- mshiddensecret
- · Replies 3 ·
What is the Force Between Links in a Falling Chain?
- PhysicsKid99
- · Replies 2 ·
Molar heat capacity and Degrees of freedom
- Effect
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Satellite in Space: Why Freely Falling?
- sarthak sharma
- · Replies 3 ·
Finding Final Velocity of Mass 1 After Collision
- Nicki
- · Replies 1 ·
Putty dropped on spring-supported frame finds max displacement
- s34n6962
- · Replies 12 ·
How does total energy of a rocket change in a uniform gravity field?
- sergiokapone
- · Replies 16 ·
Drop in pressure, what volume is left?
- Hexxor
- · Replies 1 ·
Two bodies of mass M and radius R approaching from distance r
- sarthak sharma
- · Replies 18 ·
Frictional Forces -- Skier trying 2 different skis on a gentle slope
- Physisistor
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Potential drop across capacitor after very long time
- Les talons
- · Replies 11 ·
Finding vector C perpendicular to A with dot product B·C = 19.0
- Kieran12
- · Replies 1 ·
Ideal Gas Expansion - Finding final pressure and work done by gas
- FaraDazed
- · Replies 16 ·
Conservation of matter, mass, rest mass and energy
- kirsten_2009
- · Replies 1 ·
Light angles measured in a moving reference frame
- meriadoc
- · Replies 1 ·
Finding the Critical Angle for Shelf Gliding: A Statics Problem
- NathalieSweden
- · Replies 4 ·
Ice-cream melting time dilation at what velocity?
- kirsten_2009
- · Replies 4 ·
Rigid Walled Box (Quantum Mechanics)
- robotpie3000
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Solve Bragg Diffraction: n(λ)/2sinθ
- oldspice1212
- · Replies 3 ·
Radioactive Decay: P to Q vs. S to R?
- desmond iking
- · Replies 5 ·
Will the trains ever be at the same distance from the origin?
- GoodTimes
- · Replies 7 ·
Finding center of mass of three disks
- CaptainOfSmug
- · Replies 4 ·
Helmholtz coil e/m calculation gives 10^11 instead of 10^7
- grandpa2390
- · Replies 2 ·
Special relativity question: space travel and relativity of time
- kirsten_2009
- · Replies 2 ·
How Far Apart Are a Proton and an Alpha Particle at Their Closest Approach?
- Meera.sheeda
- · Replies 4 ·
Bernoulli equation - pitot tubes
- yy205001
- · Replies 3 ·
Frictionless Multiple Body Problem with Inclined planes
- jennak314
- · Replies 1 ·
How to find cord tension and hinge force?
- matahari
- · Replies 1 ·
Inertia of a Giraffe in Terms of a Monkey (I'm serious)
- B3NR4Y
- · Replies 1 ·
Relative Speed of Two Masses Connected by a Rod
- B3NR4Y
- · Replies 3 ·
How Far Does a Car Travel When Slowing Down?
- AymanLak
- · Replies 1 ·
How Fast Did Klaus Spinka Accelerate on Grass Skis?
- OttoVon
- · Replies 12 ·
Launching a Probe to the Sun: Aim Against Earth's Velocity?
- Batracho
- · Replies 5 ·
Relationship Between Acceleration on a ramp and Acceleration due to gravity
- ScienceSinger
- · Replies 3 ·