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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Balancing a Plank on a Cylinder: Investigating Potential Energy Gain
- theloathedone
- · Replies 2 ·
Minimum Surface Charge Density for Spark Creation
- m84uily
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Relative speed of two particles
- w3390
- · Replies 4 ·
Wavespeed in a Vibrating String
- k3vination
- · Replies 1 ·
Isotope Stability: Why Rhodium is Important in Brachytherapy
- mandy9008
- · Replies 1 ·
Amplitude of a block oscillating on a spring
- drunknfox
- · Replies 1 ·
Electric potential at point from origin
- rlaulusa
- · Replies 1 ·
Find the Period of the rotation, the math gets tricky
- flyingpig
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Proton accelerating through potential difference
- aaronmilk3
- · Replies 1 ·
Physics II: Determine Electric Field Intensity for Equilibrium
- abelinkin1988
- · Replies 2 ·
Speed when a system is jerked into motion
- harimakenji
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Why does uranium-235 fission produce extra neutrons?
- mandy9008
- · Replies 1 ·
Vectors problem (part 2 with work)
- MarieWynn
- · Replies 1 ·
Emitter follower question (transistors)
- Simfish
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Gauss' Law: Solid Non-conducting Cylinder
- Bryon
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Finding angle for this resultant vector
- RandellK02
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Converting sound intensity to dB
- gmmstr827
- · Replies 3 ·
Characteristic Property of Substances (mass, volume, and density)
- kevinli
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Finding vector C given 2A + C − B = 38 lb in +x direction
- Encarta
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Adding Scalar Multiples of Vectors Graphically
- Turtlie
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What is the Equivalent Resistance between Points A and B in this Circuit?
- Ballin27
- · Replies 5 ·
Calculating the moment about an axis?
- mneox
- · Replies 3 ·
Solving Planet A's Semi-Major Axis Ratio To Planet B's
- zeromaxxx
- · Replies 4 ·
Force on Earth by the radiation pressure of Sun
- SL_1719
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Physics Problem - Projectile Motion?
- Sterwin411
- · Replies 1 ·
Boat crossing river with current at an angle
- MarieWynn
- · Replies 1 ·
Calculating Y-Component of Vector B: Solve Vectors Question
- MarieWynn
- · Replies 1 ·
Honors physics dynamics question?
- carcinojenn
- · Replies 1 ·
Surface Charge Density for Infinite Sheet of Charge
- eestep
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Finding g from position vs. time² and pendulum period graphs
- awilliams315
- · Replies 9 ·
Projections of Moments on a new Axis
- tave
- · Replies 1 ·
Angular Speed of a Cubical Block Hitting a Ridge
- Abhishekdas
- · Replies 12 ·
What is the correct magnitude and direction of the vector D and E?
- Frankie715
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Speed of a charged object accelerated through a potential difference
- musicmar
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How Much Steam Is Needed to Heat Water in a Calorimeter to 50°C?
- irishbob
- · Replies 7 ·
Static Electricity Effects on Charged Objects
- TypeFun
- · Replies 7 ·
How Do You Calculate Force and Distance in Physics Problems?
- eribac
- · Replies 2 ·
Calculating Earth's Rotational Inertia Increase at Tangent to Equator
- lilholtzie
- · Replies 5 ·
Seemingly simple system of equations
- ElTaco
- · Replies 3 ·
Wire vibration frequency with changed length, diameter and tension
- asz304
- · Replies 10 ·
What property represents light intensity in particle theory?
- xregina12
- · Replies 1 ·
Problem about tensile stress during thermal contraction
- issacnewton
- · Replies 3 ·
Finding glass height using Snell's law with water and air
- imatreyu
- · Replies 2 ·
Drift Speed of the Conduction Electrons
- Ayesh
- · Replies 3 ·
2D Kinematics: astronaut ballplayer
- dharmank
- · Replies 1 ·
Perpendicular vector using dot not cross product.
- Alex1976
- · Replies 4 ·
Index/angles of refraction for violot/red light
- frozenguy
- · Replies 18 ·
Helium nucleus through potential difference
- aimeemarie
- · Replies 3 ·
What is the flux through side B of the box?
- eMac
- · Replies 8 ·
How far did the train travel before stopping after detaching a compartment?
- mrhobbes
- · Replies 3 ·
What is the electric potential?
- Ammora
- · Replies 1 ·
What Mass Must Be Hung to Produce Specific Standing Wave Loops?
- gmmstr827
- · Replies 5 ·
What is the electric potentional for these charges?
- Ammora
- · Replies 8 ·
Current direction inconsistency at Node A in circuit diagram
- Saladsamurai
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Why Doesn't Jumping Off a High Cliff Into Water Save You?
- Peter G.
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What Does q*a Dot Product Mean?
- Gogsey
- · Replies 10 ·
How can I use two graphs to approximate g in a lab report?
- haxtor21
- · Replies 7 ·
De Broglie Wavelength Calculation given electron velocity
- msc8127
- · Replies 6 ·
Coulomb's Law and Corrected Angle
- TypeFun
- · Replies 3 ·
Magnitude of electric field and 3 points
- ENCgirl
- · Replies 8 ·
Electrostatic force between two charged honeybees
- eMac
- · Replies 5 ·
Finding the Distance Fallen and Frequency Shift with Doppler's Effect
- blch0901
- · Replies 1 ·
What Equation of Power Is Used in NVM Technology?
- Allura
- · Replies 1 ·
Electric potential difference to accelerate electron
- jegues
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Gauss's Law and a hollow metal cylinder
- flyingpig
- · Replies 2 ·
Electric field and acceleration
- ENCgirl
- · Replies 7 ·
Conductors in Electrostatic Equilibrium problem
- dimpledur
- · Replies 5 ·
Why does integrating Psi* Psi give zero?
- bon
- · Replies 11 ·
How Does Damping Affect the Oscillation of a Mass on a Spring?
- gmmstr827
- · Replies 3 ·
How Do You Calculate Electric Flux Through a Nonuniform Field?
- rambo5330
- · Replies 4 ·
Difference between diffraction and prism
- splinn
- · Replies 4 ·
Permittivity of free space in physics
- jimmy42
- · Replies 2 ·
Your attempt looks good except for the first one.
- vande060
- · Replies 1 ·
What is the tangential speed of a satellite in this orbit?
- soyger
- · Replies 7 ·
Construct a low-pass filter and measure the gain
- theuniverse
- · Replies 6 ·
Heat export during isothermal compression in Carnot cycle
- max0005
- · Replies 2 ·
Possible Time Point for Electron Moving in Opposite Direction
- jegues
- · Replies 7 ·
Do Jane and Jim reach the same position before the 350 m road ends?
- meandyou741
- · Replies 2 ·
Procedure for calibrating a thermocouple system for high temperatures
- joyana32
- · Replies 4 ·
Lightning bolt charge physics problem
- seraphimhouse
- · Replies 2 ·
Charge A High Voltage Capacitor
- Endorser
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How Does Charge Distribution Affect Electric Fields in a Coaxial Cable?
- critter
- · Replies 5 ·
Bug on accelerating disk: tangential vs centripetal acceleration
- bballcool34
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Calculating Force in Special Relativity with Proton Velocities
- IDumb
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Find the speed of car when people jumping off from it
- harimakenji
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The elastic energy stored in a wire
- Littlemonkey
- · Replies 5 ·
Is There a Calculation Error in Khan Academy's Projectile Motion Video?
- m_scott
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Change in entropy of the universe due to some block being lifted
- blueyellow
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Quantum question - angular momentum
- bon
- · Replies 1 ·
Moving Proton in an Electric Field
- Fred91
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How to Solve Thin Film Interference with White Light?
- nabilsaleh
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Frequency of an electric dipole
- LittleLu609
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Finding tension when upper block slides under lower block
- banana2020
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Electric potential and electric potential energy concept questions
- j.frank52
- · Replies 3 ·
Solving Thin Films Interference Problem with Oil and Water | 360nm Thickness
- nabilsaleh
- · Replies 1 ·
How Do You Calculate the Minimum Wavelength to Ionize Hydrogen Atoms?
- xregina12
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Acceleration of an object w/ mass vs. friction
- Spaghett
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Why are the potentials the same?
- s3a
- · Replies 3 ·
Decibel Drop of 1 Singer in Choir
- vande060
- · Replies 4 ·
Electric Field at Various Points Between Two Charged Rods
- Bogus_Roads
- · Replies 2 ·