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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Having trouble understanding "Faraday cage"
- betelgeuse91
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A helicopter is initially moving at 9m/s to the left. It
- SuperDuperSunny
- · Replies 1 ·
A puck is sliding on flat ground with an intial speed
- SuperDuperSunny
- · Replies 2 ·
Calculate variation in volume using given Poisson's ratio
- abhishek4
- · Replies 1 ·
Errors: Random, Systematic, and Human
- SimmonSays
- · Replies 3 ·
E=mc^2 Conversion to eV=u: What Happens to the Distance Units?
- LouFerrigno
- · Replies 4 ·
How do you find linear density given mass per kg?
- andkand97
- · Replies 12 ·
Quantum Measurements: The Average value is the cosine
- RJLiberator
- · Replies 2 ·
Error Propagation in Mass Flow Rates
- cjc0117
- · Replies 1 ·
Understanding Moments of Inertia for Solving Homework Problems
- brinstar
- · Replies 12 ·
How much impulse did they experience?
- Singinginshower
- · Replies 3 ·
Angle of a semicircle on a ramp
- stewood
- · Replies 5 ·
What kind of graph should I used to graph Mu?
- Jessica Lewis
- · Replies 1 ·
Calculate Impulse: 950N in 0.12s
- Singinginshower
- · Replies 4 ·
What Magnetic Field Strength Is Needed to Keep Protons at 7 TeV in the LHC?
- Wesley Strik
- · Replies 7 ·
How do you calculate the total resistance?
- Zoro
- · Replies 16 ·
Initial velocity to travel between planets of same m and R
- Hashiramasenju
- · Replies 7 ·
Why would we ignore initial angular velocity in equation?
- bob tran
- · Replies 1 ·
Angular Velocity Direction: Perpendicular or Parallel to the Plane of Motion?
- Boomzxc
- · Replies 6 ·
Resolving forces in equilibrium on inclined plane
- Issy04
- · Replies 6 ·
Calculating Moment of Inertia Homework: Soccer Ball
- Shawkify
- · Replies 2 ·
Power by Motor on Pulley System
- k_squared
- · Replies 9 ·
What is the accelerating force of a bullet in a 10cm gun barrel?
- Gradyjenkinz
- · Replies 2 ·
What are the charges on these three capacitors?
- kostoglotov
- · Replies 3 ·
Period of small oscillations for a pendulum
- mrojc
- · Replies 11 ·
Gravitation problem -- Binary star system
- PhysicStud01
- · Replies 45 ·
Calculating Uncertainty for Gravitational Potential and Kinetic Energy Equations
- rishuv
- · Replies 4 ·
Tug of war.... Finding oppostite person's force
- Mrchilko
- · Replies 20 ·
Projectile Problem: How to Find Distance of Ball Launched at 30 Degrees
- lkadfj
- · Replies 2 ·
Moment of Inertia of Rod About Axis XX': ML2/3sin2α
- Aditya1998
- · Replies 2 ·
Finding Electric Field, Potential, and Final Velocity
- PrincessYams
- · Replies 9 ·
Converging Lens and Plane Mirror Question
- Quattad
- · Replies 1 ·
Approximating magnetic field as the field of magnetic dipole
- phys-student
- · Replies 1 ·
Hooke's Law Elevator Spring Question
- MMVS
- · Replies 3 ·
Voltage vs. EMF: What's the Difference?
- Drizzy
- · Replies 12 ·
Specific heat capacity of water
- rthrbe
- · Replies 16 ·
Visualizing group and phase velocity of a wave
- Sharlom
- · Replies 2 ·
Capacitor Formation with Unequal Charges: A Potential Difference Dilemma
- gracy
- · Replies 28 ·
Why is component reverse in Conical Pendulum?
- soccer5454
- · Replies 16 ·
Classical mechanics : constant acceleration
- REVIANNA
- · Replies 10 ·
Magnetic field from a square loop
- Potatochip911
- · Replies 3 ·
Why is tension greatest at bottom in circular motion?
- soccer5454
- · Replies 5 ·
Angular Momentum and Torque Problemo
- Skoob
- · Replies 6 ·
Rotational Kinematics/Tension Problem
- Skoob
- · Replies 1 ·
How Do Mass and Young's Modulus Affect Cylinder Stability?
- Handitya Alfa
- · Replies 1 ·
Microwave's vent close to refrigerator
- vizakenjack
- · Replies 3 ·
Show the gravitional field is conservative
- Physics2341313
- · Replies 1 ·
Ideal gas volume work expression (adiabatic)
- krootox217
- · Replies 3 ·
Understanding Voltage in a Simple Circuit | Physics Forums
- pinkcashmere
- · Replies 1 ·
Finding expression for non-uniform current density of a wire
- phys-student
- · Replies 5 ·
Is force independent of reference frame?
- sandyforever
- · Replies 3 ·
Where can I start learning about moments of inertia?
- cmkluza
- · Replies 3 ·
Angular motion problem question
- Skoob
- · Replies 1 ·
Solve Spring Force/Energy: Find Velocity
- AtomicBoom
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Collision with projectile and block attached to spring
- x24759
- · Replies 3 ·
Is Time the Key to Understanding the 4th Dimension?
- hafiz ns
- · Replies 3 ·
Unsure about formula for kinetic energy
- Warlic
- · Replies 7 ·
Another Error Analysis Question - how to go about it?
- Ryaners
- · Replies 2 ·
Surface integral for line current
- Incand
- · Replies 4 ·
Constructive/Destructive Interference in a Thin Oil Film
- Quattad
- · Replies 1 ·
Force on 3uC Charge - Solving Coloumb's Law Problem
- Ember Cult
- · Replies 2 ·
How to calculate the acceleration force
- Guine Ghee
- · Replies 3 ·
Solve for mass of a second object in a momentum question
- AtomicBoom
- · Replies 2 ·
Calculating Force on a 1uC Charge
- Ember Cult
- · Replies 1 ·
How to find time.... With no acceleration and resistance.
- Mrchilko
- · Replies 5 ·
RLC Circuit time for Energy to drop to 20% of initial value
- lulzury
- · Replies 7 ·
Tension in parachute cord on dragster
- angryzeena
- · Replies 14 ·
Basketball (Energy and its Conservation?)
- Chilling
- · Replies 10 ·
How Do You Calculate the Damping Coefficient in a Mass-Spring System?
- AsadaShino92
- · Replies 6 ·
How to find tension of a single object in a pulley system?
- fissifizz
- · Replies 3 ·
What Are the Final Velocities of Hockey Pucks After a Glancing Collision?
- member_216668
- · Replies 4 ·
Work done on two cart system with spring
- Elena Polkadot
- · Replies 8 ·
Acceleration of a body( negative velocity and speeding up)
- Icy98
- · Replies 4 ·
How Does a Pulley System Help Rescue a Cat from a Tree?
- katie beisel
- · Replies 9 ·
Finding radial & tangential acceleration at a point
- vetgirl1990
- · Replies 7 ·
Rolling without slipping, shouldn't there be friction?
- Warlic
- · Replies 6 ·
Elastic and Inelastic Momentum Problem
- Dillion
- · Replies 1 ·
Time of satellite orbit around moon?
- Dillion
- · Replies 7 ·
Can't use formula for kinetic energy 1/2*mv^2?
- Warlic
- · Replies 5 ·
Calculating angle of projectile to hit target
- vetgirl1990
- · Replies 2 ·
Solving Work & Energy Problems: Homework Help
- Chris18
- · Replies 5 ·
What Is the Resulting Frequency When Two Different Sound Frequencies Combine?
- erisedk
- · Replies 4 ·
How to solve for the spillover for a spherical container?o
- HelloMrCo
- · Replies 12 ·
Producing EM waves in laboratory
- Andy123
- · Replies 2 ·
Spring constant of trampoline and cradle
- Icy98
- · Replies 1 ·
Gravitational acceleration comparison
- Ellie Snyder
- · Replies 5 ·
What is the acceleration of a cylinder when a torque is applied to it?
- dumbdumNotSmart
- · Replies 1 ·
How Do You Calculate the Period of Oscillation for a Mass on a Spring?
- Lana Elcic
- · Replies 16 ·
Bernoulli's equation/pressure question
- Senya
- · Replies 2 ·
Proving t^2/r^3: What Went Wrong?
- jackrc11
- · Replies 1 ·
How Does Mass and Inertia Affect Tension in a Pulley System?
- dumbdumNotSmart
- · Replies 6 ·
Question regarding Earth, Moon and tidal forces
- ezach1
- · Replies 14 ·
Estimation of data stored on a CD
- Alettix
- · Replies 9 ·
Solving for Work: 14,500J Applied to 1.2m Crowbar
- NatalieWise123
- · Replies 3 ·
Two conducting balls hanging from the same point
- rlc
- · Replies 13 ·
Microscope converging lens problem
- FritoTaco
- · Replies 3 ·
Momentum After Inelastic Collison
- NatalieWise123
- · Replies 1 ·
How Do You Calculate Tension in Ropes Connecting Tugboat and Barges?
- ecsthetic
- · Replies 1 ·
Applying same torque equation but getting different results
- Better WOrld
- · Replies 17 ·
STD of Poisson distributed particle intensity
- theorem
- · Replies 1 ·