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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Why is the velocity of a jump on Mars the same as on Earth?
- HAF
- · Replies 6 ·
Variable induced surface charge density on a sphere
- Apashanka
- · Replies 9 ·
What is the net force on the -1nC charge in this Coulomb's Law problem?
- Lilian Chan
- · Replies 1 ·
Energy dissipated in the resistors in a 2 mesh RC circuit
- Eduardo Leon
- · Replies 1 ·
Sound Wave Interference Problem
- Ghost Repeater
- · Replies 5 ·
A ball (sphere) rotating along a moving incline
- titansarus
- · Replies 14 ·
Determining the flow rate for a cooling system
- David0709
- · Replies 1 ·
Approximating the force on a dipole Taylor series
- Zack K
- · Replies 3 ·
Steel ring fitting onto aluminum rod through thermal expansion
- queennicolee
- · Replies 1 ·
Statics problem (moment and equilibrium)
- bardia sepehrnia
- · Replies 6 ·
How does the dielectric affect the charge distribution on a charged sphere?
- Apashanka
- · Replies 1 ·
Form Factor for Scattering (like muons off of protons)
- Martin89
- · Replies 3 ·
Gravitational force between two astronauts at distance from Earth
- sp3sp2sp
- · Replies 9 ·
Torque from force at position, getting wrong sign in cross product
- sp3sp2sp
- · Replies 6 ·
Uncertainty error of resistors in parallel
- valiantt
- · Replies 4 ·
Spring constant of a car on springs
- jybe
- · Replies 7 ·
Mass launched into the air by a spring
- jybe
- · Replies 1 ·
Volume of a gold coin at 5000m depth and pressure effects
- robax25
- · Replies 15 ·
How Does a Bullet Impact Affect the Angular Velocity of a Door?
- sp3sp2sp
- · Replies 3 ·
Angular frequency of the small oscillations of a pendulum
- Apashanka
- · Replies 3 ·
One-dimensional with lattice constant (Problem)
- Another
- · Replies 1 ·
Modeling the Driven Damped Oscillations in a Material
- luckreez
- · Replies 7 ·
Accoustic waves notions (propagation in a tube)
- Cathr
- · Replies 3 ·
Double star mutual orbit calculations
- charlie05
- · Replies 13 ·
Confirm whether radius is 300mm or not if the tension is 5N
- Josielle Abdilla
- · Replies 3 ·
Collisions in a harmonic oscillator
- Leo Consoli
- · Replies 18 ·
Estimate the number of pixels in an image
- Mazin Nasralla
- · Replies 2 ·
Correct graph of current vs voltage (photoelectric emission)
- songoku
- · Replies 4 ·
Find the Mass of the Candy Knowing the Total Mass of the Bags
- mrhood
- · Replies 11 ·
Why Does a Voltmeter Show a Reading When an Iron Rod is Moved in Coil P?
- Taniaz
- · Replies 8 ·
Additional energy stored in spring
- songoku
- · Replies 2 ·
Correct statement about internal energy
- songoku
- · Replies 25 ·
Worksheet Problem about Power (average power of a car accelerating up a hill)
- Billy Jones
- · Replies 2 ·
Distance of a Point Charge: Solving for Initial Distance Using Relativity
- Zack K
- · Replies 2 ·
Finding the parameters for Harmonic Oscillator solutions
- gabu
- · Replies 3 ·
Truck and car collision: friction, post-crash speeds, and liability analysis
- Billy12Banana
- · Replies 9 ·
Friction and kinematics problem
- stackptr
- · Replies 7 ·
Volume of cargo lifter needed for 160t load with density 0.6125 kg/m³
- robax25
- · Replies 12 ·
Cutting a spring in half and then in 1/4 and 3/4
- Dustinsfl
- · Replies 7 ·
Potential generated by a point charge in a isotropic medium
- gabu
- · Replies 1 ·
What Is the Final Velocity of a Particle Under a Time-Dependent Force?
- Alex Wik
- · Replies 7 ·
A Projectile Launcher (baseball hit at a 45 degree angle to the horizontal)
- Veronica_Oles
- · Replies 15 ·
What Angle Does a Jetliner Turn on a Circular Path?
- opus
- · Replies 7 ·
Uncertainties and the angle of minimum deviation
- Jane Smith
- · Replies 15 ·
Motion problem -- The plug and chug at the end
- opus
- · Replies 26 ·
How do I convert 1.2atm to N/m^2 when solving for gas work?
- HazyMan
- · Replies 8 ·
Why do alpha particles experience large angle deflections?
- zincsulphide
- · Replies 2 ·
Wrong statement about a p-n junction
- songoku
- · Replies 18 ·
Spacetime Invariant interval and gamma
- Ittiandro
- · Replies 21 ·
Calculating the distance to a star
- Physics Dad
- · Replies 1 ·
How Do Conduction Electrons Affect the Molar Entropy of a Metal?
- Baibhab Bose
- · Replies 1 ·
Magnitude of an Electric Field due to a dipole
- Zack K
- · Replies 6 ·
Finding an expression for the total mass of a star
- Physics Dad
- · Replies 1 ·
Conservation of Momentum (Explosion Kinematics)
- jay2001
- · Replies 15 ·
Spring conservation of energy problem
- mr1709
- · Replies 14 ·
Force on a surface from a reflecting particle stream
- Mr Davis 97
- · Replies 8 ·
Stress, Strain, and Sound in a Projectile Steel Rod
- Ghost Repeater
- · Replies 2 ·
Collision finding final velocity
- mr1709
- · Replies 1 ·
What is the Maximum Wavelength for Constructive Interference of Sound Waves?
- Cc518
- · Replies 3 ·
Drag Force Acting on an Object with Respect to Velocity
- Marcell
- · Replies 31 ·
Thevenin equivalent by source transformation
- Castello
- · Replies 6 ·
Constraint relation in a pulley spring system
- Shivang kohlii
- · Replies 6 ·
What Are the Net Forces Acting on the Kuiper Belt Object Ultima Thule?
- OmCheeto
- · Replies 3 ·
Why doesn't potential energy equal rotational and kinetic energy in a pendulum?
- spsch
- · Replies 31 ·
Location of charged particle given magnitude of position
- Zack K
- · Replies 10 ·
What is the Force F acting on a NdYAG laser of 1 kW ?
- ammar98
- · Replies 2 ·
Calculate the voltage in a circuit
- DLeuPel
- · Replies 11 ·
Equilibrium : normal reaction of a rotational center?
- Doomski
- · Replies 2 ·
Resultant amplitude of 6 phasors
- OnlinePhysicsTutor
- · Replies 2 ·
Measuring clearance height on a hovercraft
- JBM1234
- · Replies 26 ·
Solution check for a Rate problem
- opus
- · Replies 4 ·
Calculating Mechanical Energy of a Launched Ball
- Pamela Pepper
- · Replies 7 ·
Max KE of a squirrel jumping from the top of a tree
- Boop de Boop
- · Replies 6 ·
How Does Angular Velocity of a Rolling Cylinder Change Over Time?
- RiotRick
- · Replies 5 ·
How Does Volume Affect Internal Energy in Thermodynamics?
- Amaelle
- · Replies 6 ·
Free expansion process and temperature change
- Amaelle
- · Replies 8 ·
How Is the Momentum of an Electron Calculated at 0.8c?
- pkc111
- · Replies 3 ·
Problem solving: ball drops & ball shot up - they meet where?
- Tyrannosaurus_
- · Replies 11 ·
Mass of mud over valley floor area from mudslide volume
- opus
- · Replies 4 ·
How do proper time and time dilation differ?
- Taylor_1989
- · Replies 21 ·
Impossible hydrostatic scenario
- RiotRick
- · Replies 14 ·
Physics question about half life / radioactive decay
- RRmy0440
- · Replies 4 ·
Time constant for parallel RC circuit
- Shivang kohlii
- · Replies 2 ·
Mechanical Resonance Lab Questions
- lia256
- · Replies 1 ·
Why does the lion look inverted in the water?
- NumFront
- · Replies 12 ·
How does reversible =>no entropy change in the universe?
- Clara Chung
- · Replies 20 ·
RC Circuit - Rate energy is dissipated in the resistor
- bornofflame
- · Replies 4 ·
Finding the mean net force during a collision
- youmei0426
- · Replies 3 ·
What is the Relation Between Distance and Angle in Double Slit Interference?
- youmei0426
- · Replies 5 ·
Where Does the Ball Become Airborne?
- Matt Raj
- · Replies 9 ·
Find the initial velocity of a water rocket (mass changes)
- rocketlaunch
- · Replies 8 ·
Finding moment equilibrium with one pivot on a beam
- Falcon99
- · Replies 10 ·
How Do Forces Distribute on a Board Supported at Two Points?
- stackptr
- · Replies 6 ·
Calculating Period of Transverse Wave from Photo: A or B?
- tomcps
- · Replies 2 ·
Really interesting and tough kinematics problem
- PhysicsKT
- · Replies 27 ·
Deriving circular aperture diffraction
- timetraveller123
- · Replies 4 ·
Conservation of momentum and angular momentum
- Eitan Levy
- · Replies 15 ·
Force acting on the area of the cylinder due to gas
- youmei0426
- · Replies 3 ·
Find the resultant using the principle of moments
- alijan kk
- · Replies 2 ·