Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Is my solution for the Bungee Tension Problem correct?
- norcal36
- · Replies 5 ·
How to use Weibull distribution when it comes to wind?
- Kolika28
- · Replies 2 ·
Constant Acceleration -- Equation for Vavge
- Danger Mouse
- · Replies 5 ·
Best truss bridge design for this school project?
- Lietenacious
- · Replies 5 ·
F=ma experiment: Trolley being pulled by a falling weight
- coverband
- · Replies 2 ·
How can I increase the wavelength of light photons?
- dom489
- · Replies 4 ·
Fireworks Sound level at difference distances
- norcal36
- · Replies 1 ·
What Are the Normal and Shear Stresses on the Inclined Butt Weld?
- Zouatine
- · Replies 2 ·
How can I use the right hand rule to find torque in bicycle wheel rotation?
- ReCryptic
- · Replies 16 ·
Cylinder balancing in a single plane and in two planes
- crinoid
- · Replies 1 ·
Oscillations of a Block Mass attached to a Spring on an Incline
- lightlightsup
- · Replies 3 ·
Does someone understand this picture? (Solar heating)
- Kolika28
- · Replies 6 ·
Rocket moving through a cloud of dust, variable mass problem
- etotheipi
- · Replies 5 ·
How Long Does It Take a Dropped Bag to Fall from a Helicopter?
- eddddddd
- · Replies 13 ·
What Is the Internal Energy of an Electron Moving at 0.750c0?
- Barry Melby
- · Replies 2 ·
Relativistic motion of an electron in a uniform electric field
- Natchanon
- · Replies 1 ·
Using the Conservation of Energy to find the Radius of a Bowl
- Alexandra Fabiello
- · Replies 11 ·
Help with a magnetic field problem
- Shacking
- · Replies 15 ·
Solving a Spring-Mass-Box System:Energy Conservation
- User1265
- · Replies 1 ·
Astrophysics databases — Where can I find them?
- SoulOfSword_
- · Replies 5 ·
Bouyancy Question: Two weights on strings, with one weight submerged
- norcal36
- · Replies 5 ·
How forces act on a shape and its centre of Mass
- tomtomtom1
- · Replies 13 ·
Kinematics equations: Prove that a=vdv/ds
- Crystal037
- · Replies 9 ·
Energy change in a nuclear reaction
- songoku
- · Replies 10 ·
Electric current and resistance question
- Elisapan622
- · Replies 2 ·
Small error in calculating the value of g with an Atwood machine
- Ellio
- · Replies 3 ·
Rocket Trajectory Prediction: Understanding the Key Factors
- Duncan LK
- · Replies 3 ·
Find the height to which a mass rises
- gnits
- · Replies 3 ·
Checking the Lorentz transformation
- QipshaqUli
- · Replies 2 ·
Hydrogen emission spectrum calculation
- benca
- · Replies 3 ·
How Do You Calculate the Tension of a Cello String?
- ac7597
- · Replies 1 ·
Force on side of tank filled with liquid of variable specific weight
- CheesyPeeps
- · Replies 5 ·
Friction coefficient and the force on a syringe plunger
- Huger
- · Replies 6 ·
Why energy conservation fails for bullet embedded in rotating rod
- isabelle3
- · Replies 10 ·
Moving a box on an inclined plane. Find F(min), angle and W(min)
- Michael_0039
- · Replies 1 ·
Projectile Motion : Work and Energy
- ReCryptic
- · Replies 4 ·
Electromagnetism EMF induction calculations
- imranh88
- · Replies 9 ·
Understanding Units of Force (Newtons and Pascals)
- tomtomtom1
- · Replies 4 ·
Is our reasoning about constant motion accurate?
- jedimath
- · Replies 8 ·
On-Axis Field of a Uniformly Magnetized Sphere
- Luke Tan
- · Replies 1 ·
How Does Energy Conservation Affect SHM in a Mass-Spring System?
- gnits
- · Replies 2 ·
Mechanical Advantage of a Compound Wedge
- goodboybaddog
- · Replies 18 ·
Voltage and current as functions of time for a series RL circuit
- Davidllerenav
- · Replies 18 ·
Converting Candelas to Lumens for Car Headlights
- YoshiMoshi
- · Replies 12 ·
Conservation of angular momentum?
- jisbon
- · Replies 20 ·
Find the force while lapping a specimen
- blueboo33
- · Replies 6 ·
Derivation of the oscillation period for a vertical mass-spring system
- User1265
- · Replies 9 ·
Photoelectrons and Planck's constant
- benca
- · Replies 13 ·
Understanding T^2 x L Graphing for Simple Pendulum Experiment
- shivam28
- · Replies 7 ·
Electric field at a point from a 4.8 nC charge at (2.5 cm, 0.7 cm)
- nezsmith
- · Replies 3 ·
Write Maxwell’s first equation in simpler form (in wave number space)
- ameernassrah
- · Replies 1 ·
Frequency in an AC circuit given capacitance, voltage, and current
- adangerousdriver
- · Replies 6 ·
Calculate the average force used to drag a box up a ramp
- RyanRhino
- · Replies 5 ·
Finding the combined capacitance between A and B
- Eitan Levy
- · Replies 8 ·
[Special Relativity] Lorentz Transformation and Boosts
- Athenian
- · Replies 4 ·
Propagation of Error for Sodium Doublet Lines
- Browntown
- · Replies 2 ·
Circular fringes in a Fabry-Perot Interferometer
- Aurora_b
- · Replies 2 ·
Invariance of the Lorentz transform
- tina21
- · Replies 4 ·
Energy Conservation as an explanation for v=0 for spring mass system
- User1265
- · Replies 2 ·
Water temperature with two materials cooling it
- Stuka_Hunter
- · Replies 7 ·
What is the frequency of sound when a ball bounces off a wall?
- fizzyfiz
- · Replies 4 ·
Thermodynamics - Change in temperature for heated slabs of steel
- CJoy
- · Replies 3 ·
Some quick questions concerning uniform acceleration and linear motion
- Ellio
- · Replies 2 ·
Help with the phase of the solution for a driven oscillator
- etotheipi
- · Replies 2 ·
What is the resistance of the bulb filament
- isay1224
- · Replies 3 ·
[Special Relativity] - Finding Angle θ as Measured in Frame S
- Athenian
- · Replies 3 ·
[Special Relativity] Scalar Invariant under a Lorentz-transformation
- Athenian
- · Replies 8 ·
Clarifying Ambiguities in High School Physics Problems
- physicslady123
- · Replies 17 ·
Why are centripetal and gravitational forces equal in orbiting bodies?
- Moolisa
- · Replies 2 ·
Understanding Static Equilibrium and Beam Forces: A Troubleshooting Guide
- benny1993
- · Replies 9 ·
Calculating Average Linear Velocity: 1.66m/s to 1.73m/s
- sci0x
- · Replies 1 ·
Find the force acting per unit width on the vertical wall
- Kaushik
- · Replies 21 ·
Optics focal length and optical power Question
- crystal1001
- · Replies 2 ·
Harmonic motion of four meter sticks
- ac7597
- · Replies 2 ·
How Accurate Is the Physics Behind a Bullet Striking a Metal Plate?
- jisbon
- · Replies 9 ·
What elements account for these absorption lines seen?
- Luminescent
- · Replies 4 ·
Max Power of a Tesla SUV: Solving F(net)=F(app)-F(resistance)
- physicslady123
- · Replies 2 ·
Torque Calculations: Solve for Disc Revolutions with Opposing Torque
- Kratos521
- · Replies 4 ·
Help with an energy problem found on the Phet Website
- Rainy_Pass
- · Replies 4 ·
The Time to Fall in a Plunge Orbit
- Jenab2
- · Replies 4 ·
How Do You Calculate Angular Momentum Components?
- Kjjm
- · Replies 6 ·
What Angle Are the Two Surfaces at?
- kftheuidfnaks
- · Replies 8 ·
How does polarization show the wave nature of light?
- flintstones
- · Replies 1 ·
How Does Thermal Expansion Affect the Density of Liquids?
- EEristavi
- · Replies 7 ·
How to find the magnetic field and magnetic force due to a solenoid loop
- Davidllerenav
- · Replies 1 ·
Calculating Masses Using Gravitational Force Equations
- ELLE_AW
- · Replies 5 ·
How Do Drones Achieve Flight Control?
- mxchapz
- · Replies 13 ·
Electromechanical Systems: Determine the voltage across a moving coil
- Yuuichirou
- · Replies 1 ·
[University Special Relativity] Lorentz Transformation and Boosts
- Athenian
- · Replies 2 ·
Rotational Inertia and Net Torque with Friction
- Isabel1747
- · Replies 10 ·
An object with mass m moving on x'x and Ep(x) = (1/2)*k*(x^2 - 4)^2
- Michael_0039
- · Replies 2 ·
Finding angles of nodal lines in two-point source interference
- benca
- · Replies 3 ·
Question about gravitational force
- Ellio
- · Replies 3 ·
How Do You Calculate Torques for a Ladder in Static Equilibrium?
- penroseandpaper
- · Replies 2 ·
Finding the energy of a charged sphere
- Eitan Levy
- · Replies 1 ·
Waves: Calculate the sound intensity from two speakers
- Karl Karlsson
- · Replies 3 ·
Average speed of a probability density wave and wave packets
- schniefen
- · Replies 17 ·
Calculating the Ratio of Apparent Weight on a Ferris Wheel
- SuperSood
- · Replies 11 ·
Newton's 2nd Law: Pile of Books on a Table Being Moved
- Serbiwni
- · Replies 3 ·
To find the equilibrium position of a mass attached to an elastic string
- gnits
- · Replies 17 ·