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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Kirchoff's Law Question; I'm very close
- eriadoc
- · Replies 1 ·
Masses and inclined plane with friction
- nynja
- · Replies 2 ·
Tension in a Simple Pendulum: Calculating Tension at Rest and at an Angle
- gmmstr827
- · Replies 1 ·
How Does Capacitance Affect Current Amplitude in a Shunted RLC Circuit?
- zorro
- · Replies 14 ·
Vector sum of two 14.8 m vectors at 32° and 108°
- pizzie
- · Replies 2 ·
Find total current, battery voltage and power loss in parallel circuit
- Phemzy
- · Replies 3 ·
What is the Velocity-Time Graph for a Ball Thrown Straight Up?
- chawki
- · Replies 36 ·
Monkey Climbing Rope: Solving for the Least Time to Reach a Banana at 6.90m
- alfredo24pr
- · Replies 1 ·
Finding the Angle of a Projectile Launched from a Cliff
- alfredo24pr
- · Replies 12 ·
Why is the Sign of Work and Energy Important?
- jegues
- · Replies 1 ·
Finding speed of light through medium, when given critical angle of refraction
- seanmcgowan
- · Replies 3 ·
Car on banked turn, with reversed banking angle
- pech0706
- · Replies 6 ·
Why Does Apparent Weight Change on a Ferris Wheel?
- mvpshaq32
- · Replies 7 ·
Entropy Change in a Two-Step Heating Process for Water in a Heat Bath
- quietrain
- · Replies 6 ·
Calculating Charge in a 9V, 12W Radio
- aaronmilk3
- · Replies 2 ·
EMI Quickies: Get Answers to Your Questions
- cupid.callin
- · Replies 5 ·
Calculating Distance of Earthquake Epicenter Using P and S Waves
- trajan22
- · Replies 4 ·
Water Bottle Experiment (not that of Newton's)
- abejackson
- · Replies 6 ·
What Velocity Does the Boy Gain After Throwing the Jug?
- GodAllen
- · Replies 3 ·
How to calculate average force?
- kings13
- · Replies 1 ·
What is the most likely value of the current, with its uncertainty?
- aurao2003
- · Replies 4 ·
Book inserted between parallel-plate capacitor
- Pictures
- · Replies 1 ·
Finding Total Capacitance with Electrical Breakdown
- catie1981
- · Replies 6 ·
Understanding Time Dilation and Age Differences in Twin Paradox Experiments
- Raziel2701
- · Replies 4 ·
Couple simple electric force questions
- JimiJams
- · Replies 7 ·
What does sin2(θ) mean in the projectile range formula?
- ThomasMagnus
- · Replies 7 ·
Four Charged Particles in a Square
- doogles8654
- · Replies 3 ·
Magnetic Field loops of wire Question
- member 217843
- · Replies 1 ·
Orbital shapes, Newton's gravitation, and Kepler's laws
- LukeyD
- · Replies 1 ·
Creating a simple budget step by step
- gautamgoyal
- · Replies 1 ·
Projectile Motion. Find where it lands.
- TcWhistler
- · Replies 7 ·
Finding Max Compression of Spring with 500g Block
- AnnieF
- · Replies 3 ·
Two questions regarding conductors and their properties.
- flyingpig
- · Replies 5 ·
How Do You Calculate Charge from Electric Potential Energy in a Dipole?
- roman15
- · Replies 14 ·
How Is Force Calculated When Pushing a Block at Constant Velocity?
- macmac410
- · Replies 4 ·
Calculating Minimum Magnetic Field for Sliding Copper Rod on Two Rails
- tomrja
- · Replies 4 ·
Solving Spherical Conductor: Net Charge and Electric Field
- tica86
- · Replies 3 ·
Calculate Speed of a Charged Particle in a Square
- stuti911
- · Replies 6 ·
What Is the Potential Difference Across Three Series Resistors?
- name_ask17
- · Replies 11 ·
Parallel and normal components of electric field near a metal plate
- bon
- · Replies 2 ·
Thermodynamics - Thermal Energy of a gas
- WolfeSieben
- · Replies 4 ·
Net Charge of a Region with Increasing Electric Field?
- affordable
- · Replies 2 ·
Speed of sound at –10 °C given proportionality to temperature
- chawki
- · Replies 2 ·
Does the slope increase if it goes from more to less negative?
- Ryker
- · Replies 2 ·
Find max compression of spring, block on incline
- DrWillVKN
- · Replies 4 ·
Relative separation speed in pepper spray momentum problem
- Stahs
- · Replies 11 ·
Angle of Line x+sqrt(3y)=12 with X-axis
- KrazyFire
- · Replies 13 ·
Impact force of 15 lb object at 67 mph and equivalent drop height
- Moose720
- · Replies 14 ·
Mass Per Unit Length: Easily Calculate
- Mattmiles
- · Replies 1 ·
How Does Gauss' Law Apply to Coaxial Cable Charge Distribution?
- KarlsBarkley
- · Replies 1 ·
Potential Difference of 1200 V Gives Electron 1200 eV Kinetic Energy
- tica86
- · Replies 1 ·
Vertical Motion Problems: Can You Solve These?
- nerdgirl14
- · Replies 2 ·
What is the Explanation for the Zero Value in the Steiner Theorem Demonstration?
- Telemachus
- · Replies 4 ·
Solenoid in open circuit and with glavanometer attached
- tecktonik
- · Replies 1 ·
Piston problem including force and work
- jessiemay1993
- · Replies 8 ·
How Is Average Speed Calculated for a Round Trip with Different Speeds?
- realslow
- · Replies 3 ·
Finding the force applied on a foot
- chris_0101
- · Replies 3 ·
Projectile Motion - Find intial velocity when given an angle?
- white_is
- · Replies 6 ·
How Does Time Dilation Affect Space Travel Between Earth and Vega?
- jewels04
- · Replies 1 ·
What is the Flux through the surface?
- uchicago2012
- · Replies 1 ·
Vector problem with traveling car
- ThomasMagnus
- · Replies 3 ·
Estimating observable universe volume from its age
- brandon26
- · Replies 9 ·
How Does the Doppler Effect Calculate Submarine Depth and Velocity?
- krtica
- · Replies 2 ·
Astronomy, Luminosity of 100 solar mass stars
- jmm5872
- · Replies 3 ·
Tension in a rope due to hanging mass
- jegues
- · Replies 7 ·
What are they doing? Charges and Conductors
- flyingpig
- · Replies 25 ·
Signs and directions of field lines in Gauss's law problem
- MitsuShai
- · Replies 7 ·
Hohmann transfer orbit from Earth to Mars
- olyviab
- · Replies 4 ·
Physics - Thermodynamics - Pressure caused by Nitrogen atoms hitting a surface
- WolfeSieben
- · Replies 10 ·
Electric field and total charge
- uchicago2012
- · Replies 5 ·
How Does Charge Distribution Affect Electric Field and Work Done?
- uchicago2012
- · Replies 3 ·
Charge on the Surface of a Spherical Shell with a point charge inside with
- jaguar7
- · Replies 2 ·
Finding direction of electric field difference from two points around a charge
- awertag
- · Replies 10 ·
Contour integral of cosh z/(z²-z) around three circles
- blueyellow
- · Replies 1 ·
Electric flux through a hemisphere with uniform field
- uchicago2012
- · Replies 1 ·
Calculating Average Power of 130V RMS Generator Circuit
- Xels
- · Replies 2 ·
Heat flow through oven glass door in 1 hour
- hoyy1kolko
- · Replies 3 ·
How Do You Calculate Current Density in a Wire?
- 123yt
- · Replies 3 ·
Electric field question(half worked already)
- vande060
- · Replies 7 ·
Finding units for charge and electric potential expressions
- TypeFun
- · Replies 19 ·
Dynamics HW problem giving me a real headache
- customwelds
- · Replies 2 ·
Problem with angular acceleration and Moment of Inertia
- Aviation
- · Replies 2 ·
Where on the x-axis will a third charge have no net force
- bbraves7
- · Replies 3 ·
Acceleration as a function of position, and time taken to travel a distance
- jmz34
- · Replies 3 ·
Finding current at instant when capacitors have lost 80% of initial energy?
- smashyash
- · Replies 9 ·
Accelerating to pass a truck in 3.0 seconds
- mistabry
- · Replies 3 ·
Two electrons, one moving towards the other.
- pdeco1
- · Replies 1 ·
Chain hanging off table: integration help for variable mass problem
- Liquidxlax
- · Replies 2 ·
Choosing the Right Answers for Falling Wheel, Crate Forces, and Ammeter Readings
- chawki
- · Replies 2 ·
Why am I getting negative work when it should be positive?
- dimpledur
- · Replies 1 ·
Physics-Electric Fields: Can someone please explain this to me?
- MitsuShai
- · Replies 8 ·
Electric Potential: Two Spherical Shells
- Bryon
- · Replies 1 ·
Electric field at the surface of a Geiger counter wire
- Bryon
- · Replies 7 ·
Finding the Spring Constant: A Simple Calculation
- rola99
- · Replies 1 ·
Which Solar System Body is Hardest to Reach and What Does It Take to Get There?
- elorc
- · Replies 6 ·
Calculating Change in Electric Potential Energy with Multiple Charges
- watdawaq
- · Replies 1 ·
Finding the Electric Potential at a Point Due to Multiple Charges
- eestep
- · Replies 1 ·
What is the Path and Speed of a Proton in a Magnetic Field?
- aldaris565
- · Replies 10 ·
How Much Fuel Does a Spacecraft Use to Generate 1.5 MN Thrust?
- matramlee
- · Replies 3 ·
Charged Particle Travelling Through Electric Field
- pdeco1
- · Replies 4 ·