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 work of a constant force conservative?
- AntoineCompagnie
- · Replies 6 ·
How to show that the electric field inside a spherical shell is zero?
- Davidllerenav
- · Replies 23 ·
Maximum power in this resistor circuit
- Physics lover
- · Replies 7 ·
Minimum velocity to throw an object between two planets
- Yalanhar
- · Replies 34 ·
Free Falling Object: Calc. d = 19.6m in 1s
- Mid
- · Replies 3 ·
How to calculate the electric field at a point on the axis of two rings
- Davidllerenav
- · Replies 20 ·
Electromotive force induced in a conducting rod
- DottZakapa
- · Replies 1 ·
Acceleration and Displacement from a Velocity vs. Time Graph
- gnits
- · Replies 15 ·
What Does a Flat Disc Bounded by a Circle Mean in Electric Flux Calculations?
- Davidllerenav
- · Replies 7 ·
Green's function and the resistance across a Hypercube
- Hamsi
- · Replies 3 ·
Several parts of a system and its CM
- brotherbobby
- · Replies 2 ·
Uncertainty in solar rotation speed from Carrington equation
- koots
- · Replies 4 ·
How can rounding errors affect calculations in stopping distance?
- Bellahhhh
- · Replies 3 ·
Circular loop of wire is concentric with a solenoid
- Pochen Liu
- · Replies 10 ·
The solid angle equation for the magnetic field of a loop
- Coffee_
- · Replies 8 ·
Pendulum with a mass on a container (thermodynamics problem)
- ValeForce46
- · Replies 10 ·
How far should an electron be fired so it stops before reaching the plate?
- Fontseeker
- · Replies 3 ·
Using Wien's law with a maximum wavelength of 700nm
- warhammer
- · Replies 9 ·
Classical Mechanics Problem Based On Conservation Of Energy
- KingOfDirewolves
- · Replies 1 ·
Question on Test: Hiker Displacement
- Anthony Gonzalez
- · Replies 4 ·
Net force on charged particle with multiple charges
- Fontseeker
- · Replies 7 ·
Two objects exchange heat through a cyclical thermal machine
- ValeForce46
- · Replies 1 ·
EMF induced in an off-axis solenoid due to a rotating magnet
- Cactus
- · Replies 5 ·
Distance Velocity Graph: What Does the Area Represent?
- Balti
- · Replies 2 ·
A golf ball being hit on the moon vs Earth
- Jregan
- · Replies 4 ·
Position in Velocity-Time Graphs
- crownedhues
- · Replies 1 ·
A glass tube filled with mercury
- ValeForce46
- · Replies 13 ·
Average velocity and instantaneous velocity
- lina2selena
- · Replies 1 ·
Converting between wavenumber and wavelength
- aliens123
- · Replies 2 ·
Spaceship approaching Mars and relative motion
- Like Tony Stark
- · Replies 1 ·
Moment of Inertia of a hollow sphere with Mass 'M' and radius 'R'.
- Kaushik
- · Replies 16 ·
Relative rotational motion on a disc
- Like Tony Stark
- · Replies 1 ·
Electron traveling between charged plates
- jisbon
- · Replies 28 ·
Finding torques from gravity and buoyancy on submerged beam cross-sections
- jchan79
- · Replies 1 ·
Electric field using Gauss's Law, but in open cylinder given only r?
- ktw
- · Replies 12 ·
Question on Calculating Coulomb force in VECTOR FORM
- mhrob24
- · Replies 3 ·
Kinematics in 1D: Will Defiance Drake reach the ship or miss?
- CJoy
- · Replies 2 ·
Jenkins-White prism problem: relating deviation angle and refractive index
- BlazenHammer
- · Replies 6 ·
Moment of inertia of this shape about the x-axis
- jisbon
- · Replies 5 ·
Newton's laws - Pedagogical machine
- Saitama
- · Replies 16 ·
Calculating the B field in a small gap in a toroid
- alanf
- · Replies 8 ·
Why Would the Pressure at Points 1 and 2 be the Same?
- colcol500
- · Replies 2 ·
How to find work via Force and Time
- JRC03
- · Replies 2 ·
Net force on a Submarine Window?
- colcol500
- · Replies 7 ·
Shock Wave Front: How Does Source Movement Create Waves?
- tina21
- · Replies 2 ·
Water inside a pot of copper (Thermodynamics problem)
- ValeForce46
- · Replies 17 ·
Amplitude of an oscillating electric field
- DottZakapa
- · Replies 4 ·
How to get ##\ddot r## when you have ##r##, ##\theta## and right trig
- Like Tony Stark
- · Replies 4 ·
Decomposing velocity vectors into polar axis
- Like Tony Stark
- · Replies 4 ·
Kinematics question on 2 planes moving relatively with each other
- Santilopez10
- · Replies 6 ·
Audio interference of sound waves from two speakers
- DottZakapa
- · Replies 19 ·
How to get the Uncertainty of a percentage change
- usehn
- · Replies 4 ·
Circular motion with kinematics
- jisbon
- · Replies 9 ·
Experimental Determination of “g” using an Elevator
- The Head
- · Replies 4 ·
A cylinder full of water with two holes at different heights
- ValeForce46
- · Replies 3 ·
Does friction torque in speeding up = speeding down?
- Anak Soleh
- · Replies 2 ·
Finding vector sums, cross products, and relative velocity
- PhantomDiclonius
- · Replies 1 ·
Can someone explain this GRE problem to me? (gamma ray detector)
- jdou86
- · Replies 15 ·
How to find the Braking Torque of an Eddy Current Braking Setup?
- IndianGeek234
- · Replies 26 ·
Fluid dynamics problem -- Filling linked cylinders with water
- ValeForce46
- · Replies 8 ·
Why is south celestial pole above horizon at northern latitude?
- Kelli Van Brunt
- · Replies 2 ·
Can classical mechanics describe a single particle in a force field?
- warhammer
- · Replies 5 ·
Adding two vector forces
- Ahmad Qaimari
- · Replies 2 ·
Magnitude of vertical and horizonal componants
- kaydis
- · Replies 13 ·
Object breaking into two pieces and falling to ground
- jisbon
- · Replies 11 ·
Finding center of mass for two triangular plates using integration
- jisbon
- · Replies 8 ·
Simple harmonic motion -- manipulating SHM equations
- jisbon
- · Replies 25 ·
Finding time when rocket engine fails at 1055 m/s
- Jregan
- · Replies 1 ·
Finding potencial of forces - answer differs from solutions
- Gabriel Henrique
- · Replies 2 ·
##\vec v## and ##\vec a## expressions - motion on an off center circle
- Like Tony Stark
- · Replies 1 ·
Energy conversions in a game of billiards
- Kaushik
- · Replies 9 ·
Yo-yo on an accelerating conveyor belt
- sudera
- · Replies 27 ·
Solving a Trigonometric Equation: v^2*sin(180-2theta2)/g
- DeltaForce
- · Replies 4 ·
Are My Concepts on Radial Acceleration and Displacement Incorrect?
- jisbon
- · Replies 5 ·
Horizontal syringe Bernoulli's principle problem
- b0b10
- · Replies 2 ·
Problem about orbital mechanics
- Andres Padilla
- · Replies 5 ·
How can I use KVL and KCL to find the potential differences in this circuit?
- Pochen Liu
- · Replies 2 ·
Double slit intensity ratio: 3rd and 0th order maxima
- DottZakapa
- · Replies 7 ·
Forces along non-perpendicular axes
- Imbellis
- · Replies 2 ·
Find the speed of a copper loop falling in a magnetic field
- spsch
- · Replies 10 ·
Conservation of Energy and change in the length of a spring
- jisbon
- · Replies 18 ·
Relative motion between cars with different types of movements
- Santilopez10
- · Replies 10 ·
Finding the Acceleration of a Bag Being Raised by a Rope on a Moving Kid
- Santilopez10
- · Replies 12 ·
Can Someone Explain Proportional Reasoning to Me?
- crownedhues
- · Replies 7 ·
Electric field in the narrow wire
- DottZakapa
- · Replies 4 ·
Electric Field for the circular path of a positively charged particle
- Aaryan34532
- · Replies 3 ·
Heating a steel plate with a hole in it
- Nikitin
- · Replies 7 ·
The Magnitude of Induced EMF in a Moving Rod?
- DottZakapa
- · Replies 8 ·
Hole in an aluminium plate and that plate is heated
- Inderjeet Singh1208
- · Replies 2 ·
Solving Toppling Hemisphere Problem with Momentum & Angular Momentum
- {???}
- · Replies 19 ·
Determining Resistance of a Copper Wire Without Knowing Its Resistivity
- Archimedess
- · Replies 4 ·
Waves in round trip through a thin film and phase difference
- DottZakapa
- · Replies 1 ·
Is the balance of forces equation correct for a tube immersed in alcohol?
- ValeForce46
- · Replies 8 ·
Intrinsic coordinates kinematics problem
- Santilopez10
- · Replies 5 ·
Tension and speed of bowling ball pendulum passing the equilibrium position
- snormanlol
- · Replies 2 ·
Relationship of a planet's mass, size, and acceleration due to gravity
- yoosnb
- · Replies 4 ·
Tension in a String: Solve for Unknown Lengths - 98.6N
- snormanlol
- · Replies 5 ·
How Do I find Force when only Distance and Mass are given?
- Kaitlynn Robicheaux
- · Replies 1 ·
How Does the Volume of a Block Affect Its Buoyant Force?
- NicholasJ
- · Replies 2 ·
Elevator Question: Calculating displacement from weighing scale readings
- jisbon
- · Replies 2 ·