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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Tangential and normal acceleration for a particle in elliptical orbit
- brasilr9
- · Replies 5 ·
Proof for Radiation Momentum Transfer to Perfect Absorber?
- Kenny Lee
- · Replies 2 ·
Should you lower the cold reservoir or raise the hot one to increase Carnot efficiency?
- endeavor
- · Replies 7 ·
Finding final speed from force, mass, and distance
- physicskillsme
- · Replies 13 ·
What Force is Responsible for a Car's Kinetic Energy?
- nicolas38
- · Replies 2 ·
Millikan's experiment with a twist
- physicsss
- · Replies 2 ·
Physics principles in combustion engines
- TysK
- · Replies 2 ·
Tire inflation to determine weight
- BooGTS
- · Replies 5 ·
Can a Man Catch a Constantly Accelerating Train?
- Jess1986
- · Replies 1 ·
Distance from camera to bird image in plane mirror
- mr_coffee
- · Replies 10 ·
Need to prove my teacher wrong on this test question
- Gmoney23
- · Replies 3 ·
Does the Efficiency of Pulley Systems Increase with More Pulleys?
- dekoi
- · Replies 2 ·
Can a diffraction grating resolve 5800 and 5802 angstrom wavelengths?
- Reshma
- · Replies 4 ·
Particle on rotating string with insufficient tension to support weight
- GregA
- · Replies 4 ·
Finding bullet speed through ballistic pendulum where bullet emerges
- k20a3
- · Replies 15 ·
More projectile motion problems (sigh)
- raizen91
- · Replies 8 ·
Direction of two electrons in a magnetic field
- Da-Force
- · Replies 10 ·
Solving Circuit Analysis Problems with Kirchhoff's Laws
- Elysium
- · Replies 29 ·
Show that the change in entroy is
- endeavor
- · Replies 3 ·
Some Study Questions For PHYS100A
- k20a3
- · Replies 2 ·
Angular momentum of a golf ball rolling past a hole
- sauri
- · Replies 2 ·
What is the momentum and energy involved in these two physics problems?
- Huskies213
- · Replies 3 ·
Should I round intermediate steps or wait until the final answer?
- M_LeComte
- · Replies 7 ·
Finding Focal Length of 2 Lenses Combined
- mr_coffee
- · Replies 4 ·
Calculating Angular Acceleration of a Shaft
- elmariachi
- · Replies 2 ·
Terminal Velocity from a graph
- tazmanmaniac
- · Replies 9 ·
Magnetic flux through a 2m square conductor at 30 degrees
- jimmy_neutron
- · Replies 4 ·
Calculating Elastic Potential Energy in a Vertical Spring System
- iceT
- · Replies 2 ·
Does energy barely leave the sphere?
- alex_boothby
- · Replies 4 ·
Potential Energy of .2kg Stone Thrown Upward
- superdave
- · Replies 7 ·
Impulse and Momentum: Substitution Trouble
- Sakura
- · Replies 4 ·
Why Does a 0.30 Coefficient Yield a 3.25 m/s² Acceleration Calculation Error?
- helen3743
- · Replies 3 ·
Dimensional Analysis of Constant Acceleration at 1 g
- Gregor
- · Replies 18 ·
Calculate Minimum Vertical Velocity for Salmon Jumping 1.9m Waterfall
- inner08
- · Replies 5 ·
Finding mass suspended from a vertical spring given displacement
- superdave
- · Replies 3 ·
What is the atom density of aluminium at 600K?
- alfredbester
- · Replies 2 ·
Describe several situations in which an object is not in equilibrium
- bobbyjoe14
- · Replies 3 ·
Attaching string from mousetrap to axle for 40-meter car
- lightfire22000
- · Replies 1 ·
Maximum height of a baseball batted 100m in 4 seconds
- raizen91
- · Replies 28 ·
Understanding Magnetic Field Interactions: How Do Perpendicular Fields Act?
- stuplato
- · Replies 2 ·
Angular acceleration of a rotating rod and meter stick
- YoungBuddhist
- · Replies 1 ·
Is KE Always Positive? An Explanation of Scalar and Vector Quantities
- jcais
- · Replies 7 ·
Projectile Motion maximum altitude of rocket
- dontcare
- · Replies 3 ·
Solve Friction Problem: Find Car Mass and Normal Force
- BluE
- · Replies 4 ·
Electric current in a rotating ring
- Elysium
- · Replies 3 ·
Force vectors equilibrium and linear equations
- blutoonwcarrotnnail
- · Replies 19 ·
Measurement units and complex numbers.
- Orefa
- · Replies 4 ·
What is the Total Work Equation for Changing an Object's Vertical Position?
- jcais
- · Replies 3 ·
Angular speed of student on merry-go-round
- sauri
- · Replies 2 ·
Calculating Density of Aluminium Using Debye Theory
- alfredbester
- · Replies 1 ·
Lifting Jet Engines: Rigging Cranes for Complex Objects
- Spectre32
- · Replies 2 ·
Efficient Water Pumping with Wind: Calculating Rate in Liters per Minute
- Jacob87411
- · Replies 5 ·
Finding meter stick mass using rotational equilibrium
- Jasonn
- · Replies 31 ·
An image is magnified by 2.50, concave mirror confusion wee
- mr_coffee
- · Replies 3 ·
How do I solve these capacitor problems?
- that1grrl
- · Replies 1 ·
Magnetic Force,EMF, Flux question
- nophun6
- · Replies 4 ·
Some Differential equation problems
- seang
- · Replies 1 ·
How much fuel needed to accelerate 3.10T to 10000 m/s?
- Jacob87411
- · Replies 12 ·
Convex mirror image distance and magnification problem
- mr_coffee
- · Replies 2 ·
Determining Motion in Windowless Train: Is It Moving or Stationary?
- gangsterwong
- · Replies 2 ·
What is the correct way to find the speed of the bucket in circular motion?
- RedBurns
- · Replies 3 ·
Calculating Kinetic Energy Change for m1 in a Pulley System
- Jacob87411
- · Replies 7 ·
How do potentiometers measure cell voltage with zero current?
- Kagetora
- · Replies 12 ·
3 point charges in the x direction
- Trista
- · Replies 4 ·
How Do Springs, Work, and Energy Relate in Physics?
- jcais
- · Replies 2 ·
How Does Tension Affect Acceleration in a Two-Mass System?
- John O' Meara
- · Replies 1 ·
Electron travelling in Magnetic and Electric Field.
- vg19
- · Replies 3 ·
Electric field of a charged rod
- twiztidmxcn
- · Replies 1 ·
Thermodynamics: Entropy and specific heat
- Pandris
- · Replies 1 ·
Equilibrium of a Particle (3D-space, 4 points, 3 vectors and one weight)
- VinnyCee
- · Replies 8 ·
Where will the end of the spring line up with the ruler marks?
- chazgurl4life
- · Replies 4 ·
Charge and Current in a Wire: Why is the Current Zero at t=2s?
- twiztidmxcn
- · Replies 4 ·
RMS Current in Circuit with Capacitor, Inductor, Resistor, AC Source
- thenewbosco
- · Replies 1 ·
How Do You Calculate the Angular Momentum of a Rolling Sphere?
- Reshma
- · Replies 13 ·
How Do You Calculate Image Distance in a Plane Mirror Setup?
- mr_coffee
- · Replies 7 ·
Cart Pushing: what happend to s & fk?
- Sakura
- · Replies 3 ·
Spherical mirrors (concave), easy plug in chug, but i f'ed it up
- mr_coffee
- · Replies 2 ·
2 Accelerating Rotational Points in One System
- Mechanics
- · Replies 5 ·
Change in internal energy and heat for isobaric expansion of ideal gas
- jesuslovesu
- · Replies 1 ·
Wave Problem (constructive interference)
- user1252452035
- · Replies 1 ·
Why Is the Fringe at the Narrow End of a Wedge Always Dark?
- Vixus
- · Replies 1 ·
How Does Pulling Arms In Affect Angular Velocity on a Rotating Stool?
- sauri
- · Replies 7 ·
How Does Particle B's Movement Depend on Particle A's Velocity Direction?
- frozen7
- · Replies 2 ·
Explanation of the wording - Electromagnetism Question
- Brewer
- · Replies 3 ·
Spring Problem (Need to know if its right)
- Jacob87411
- · Replies 10 ·
Understanding Gauss' Law: Electric Field of an Infinite Slab of Charge
- mewmew
- · Replies 4 ·
Is acceleration A = V/T or A = V/T²?
- Gregor
- · Replies 83 ·
How Long Does It Take for a Disc to Stop Under Applied Force?
- sauri
- · Replies 12 ·
Conservation of energy and conservation of momentum
- sauri
- · Replies 8 ·
Proving c in Special Relativity
- kahless2005
- · Replies 4 ·
Capacitance of two charged conducting spheres separated by large distance
- Lisa...
- · Replies 4 ·
What is the potential difference across the capacitor at time t=0?
- WayneTie
- · Replies 2 ·
Why does my energy density calculation have an extra factor of 3?
- amcavoy
- · Replies 7 ·
Center of gravity and the center of mass
- marichue
- · Replies 2 ·
Verify EPE of 2 Particles Attached to Elastic String
- GregA
- · Replies 8 ·
How is Stokes law related to parachutes?
- samz90
- · Replies 1 ·
What does voltage (potential difference) mean physically?
- wasteofo2
- · Replies 13 ·
Determining the Mass of a Selenium Ion in a Bainbridge Mass Spectrometer
- beanryu
- · Replies 2 ·
What is the average acceleration of a solid sphere rolling down an incline?
- alex_boothby
- · Replies 5 ·