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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How Do Dependent Sources Affect Voltage and Power Calculations in Circuits?
- -EquinoX-
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Finding specific heat capacity of ice in calorimetry experiment
- Prototype07
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Pulleys and Conservation of Energy
- zx95
- · Replies 1 ·
Calculate Kinetic Energy in Elastic and Non-Elastic Collisions
- EPhoenix
- · Replies 5 ·
Capacitance of a cylindrical capacitor
- stosw
- · Replies 2 ·
Plural of "Refractive Index": Debate
- tomeatworld
- · Replies 2 ·
What is the Ray Tracing Diagram for a Concave Lens with f < do < R?
- chrisfnet
- · Replies 1 ·
Increasing magnitude of the charge
- sophia.m
- · Replies 8 ·
Net Force on Outside Balls in a Charged System
- jand
- · Replies 3 ·
How does a changing electric flux produce a magnetic field?
- fluidistic
- · Replies 9 ·
Free Fall Problem: How to Calculate Time in Air for a Thrown Ball?
- VoNi
- · Replies 2 ·
Block with pulley on frictionless surface: distance, acceleration, tension
- spursfan2110
- · Replies 4 ·
Tension in a string at an angle
- BikeSmoth
- · Replies 5 ·
Finding tension and angles for two balls on threads of length 2R
- 385sk117
- · Replies 1 ·
What factors determine the focal length of a lens?
- sskk221
- · Replies 5 ·
Does Mass Affect Acceleration or Not?
- indnajns
- · Replies 3 ·
Does RMS voltage depend on angular frequency?
- iamnew
- · Replies 1 ·
T, simple harmonic motion, gravity
- kjavia795
- · Replies 1 ·
Interference of Waves from Two Sources and Beats
- weezer13578
- · Replies 3 ·
Electrostatics. finding the resultant force
- anoel
- · Replies 1 ·
Bolt forces on jet engine and tension in pulley system
- Matt12345
- · Replies 1 ·
Electric field of a long hollow cylinder with uniform charge density
- huntingrdr
- · Replies 4 ·
How to Calculate Flow Rate in a Tapered Pipe with Pressure Difference?
- 12342
- · Replies 1 ·
Baseball reaches maximum height after 3.5 s and clears a 95.8 m fence
- mcg5132
- · Replies 5 ·
Charge on the surface of a conducting sphere.
- 123xx
- · Replies 1 ·
How can a torque be derived for a moving dipole without external fields?
- tavsaito
- · Replies 4 ·
Electric field from two perpendicular dipoles at their center
- DeadFishFactory
- · Replies 2 ·
Short in Wires with 2 Different Resistances
- skibum143
- · Replies 7 ·
Why Can't I Solve for Is Using the Left Loop in Thevenin Voltage Problems?
- mmmboh
- · Replies 9 ·
Free-body diagram for car on 25° ramp with cable at 31°
- mybrohshi5
- · Replies 11 ·
Calculating Electric Field in the First Quadrant: What is the Next Step?
- camrylx
- · Replies 5 ·
What Is the Correct Calculation for Net Force on Charge 3 in an Electric Field?
- s.bala
- · Replies 1 ·
How Is the Mass of the Spherical Weight Calculated for Buoyancy Equilibrium?
- ACE_99
- · Replies 4 ·
Calculating Electric Field from a Source Charge: A House Fly Problem
- Dmitri10
- · Replies 3 ·
Calculating Focal Length of Human Eye When Focusing Closely
- gadawg90
- · Replies 4 ·
Coefficient of Friction of object sliding down ramp
- grr_physics
- · Replies 16 ·
Damped oscillator with 520 g mass and 1% amplitude loss per cycle
- UMDstudent
- · Replies 8 ·
What is the estimated capacitance of the capacitor in a photographic flash unit?
- songoku
- · Replies 2 ·
Does induced charge on a rod oppose or strengthen an external electric field?
- s.bala
- · Replies 3 ·
Potential energy of a proton at the midpoint of a capacitor
- csimon1
- · Replies 1 ·
How to Calculate Boat Angle for Straight River Crossing?
- kboykb
- · Replies 3 ·
One More hard Oscillations Problem
- mihir871
- · Replies 15 ·
Net force on three point charges on the x-axis
- s.bala
- · Replies 6 ·
Magnetic Force away from Long Pair of Wires
- Tjvelcro
- · Replies 1 ·
How to Write a Physics Story Using These Terms?
- dhru1
- · Replies 9 ·
Calculating the Total Energy of a Geosynchronous Satellite in Orbit
- Cudi1
- · Replies 7 ·
What Is the Potential Difference in Biological Membranes and Electric Fields?
- pillar
- · Replies 1 ·
Force: max tension before rope breaks
- mybrohshi5
- · Replies 3 ·
Acceleration as a Function of Velocity
- DeboPGH
- · Replies 4 ·
Does a Ball Rotate on a Frictionless Surface?
- anonymousphys
- · Replies 13 ·
Solving for Distance and Time: Motion on Incline Homework Help
- kboykb
- · Replies 2 ·
How Is Mechanical Energy Calculated in Thrown Objects?
- new^2^physics
- · Replies 1 ·
How much work is done by the engine?
- zaga04
- · Replies 1 ·
Maximum speed of car on horizontal curve with friction
- Nesstle
- · Replies 1 ·
Counting electrons: current and charge
- splash
- · Replies 1 ·
How Is Chimpanzee Tracking Using Vectors and Trigonometry?
- Calhoun295
- · Replies 2 ·
Calculate the length of a parsec if you are on mars
- warfreak131
- · Replies 1 ·
How Big Does a Helium Balloon Need to Be to Reduce a Person's Weight by 21%?
- dymand68
- · Replies 6 ·
Change in Entropy of Boiling Water to Steam
- ihearyourecho
- · Replies 3 ·
A 8.0×10^-2 kg ice cube at 0.0 degrees C is dropped into a Styrofoam cup
- ihearyourecho
- · Replies 4 ·
Electric Field Involving Gauss's Law Problem
- king_abu
- · Replies 8 ·
What Is the X-Component of the Electric Field from a Given Potential?
- Ron Burgundy
- · Replies 1 ·
What Element Results from Removing Protons and Neutrons from Oxygen-16?
- likewhoa
- · Replies 3 ·
Bowling ball rolls off table at 15 m/s, lands 45 m away
- emk555
- · Replies 1 ·
Does a 15 nm Photon Ionize a Ground State Hydrogen Atom?
- ricky red
- · Replies 3 ·
What is the tension in string 1 when string 2 breaks?
- spursfan2110
- · Replies 7 ·
Spring, resonance frequency and a bit of fun
- magwas
- · Replies 12 ·
One dimensional motion in Halliday Resnick Fundamentals
- madah12
- · Replies 7 ·
Electric potential of a hollow sphere
- fluidistic
- · Replies 11 ·
What is the Ratio of Speeds After a Noncentral Elastic Collision?
- EPhoenix
- · Replies 2 ·
What Is the Angular Velocity of a Hinged Stick After Collision?
- zhenyazh
- · Replies 3 ·
Physics Force and Motion Problem
- PhysicsMess22
- · Replies 7 ·
Frequency of Siren Perceived at 50m After Fire Engine Passes
- olyviab
- · Replies 1 ·
Electric field inside and outside a hollow charged sphere
- StudentPhys
- · Replies 2 ·
What is sound wave refraction and how do speed and frequency affect it?
- CanadianEh
- · Replies 2 ·
Kinematics: Object Thrown Up from 3.6m Window
- ryan8642
- · Replies 1 ·
The pressure sand exerts on a particular area.
- Physics321
- · Replies 1 ·
What does ε₀ stand for in the electric field equation?
- Lorax
- · Replies 9 ·
Proving initial speed of a particle
- paradiselost
- · Replies 1 ·
Solving for 3 variables in projectile motion problem
- babacanoosh
- · Replies 1 ·
How Is Charge q2 Calculated Using Electric Potential and Field Equations?
- nunos
- · Replies 1 ·
Two cars on highway with opposite motions meeting
- a.train12
- · Replies 1 ·
Does the Subscript x=0 Indicate a Zero x-Component in Vector Notation?
- Bizkit
- · Replies 1 ·
Milikan's Experiment Lab - Euclidean Algorithm
- Morass
- · Replies 1 ·
Electric Field of Two Charged Plates
- Physics197
- · Replies 3 ·
Supersonic plane flying horizontally
- olyviab
- · Replies 2 ·
Electric Potential: V=-ED for Capacitors?
- collegeconfid
- · Replies 1 ·
Atwood's machine height problem
- tony873004
- · Replies 2 ·
How Do I Calculate the Time Constant from Oscillation Decay?
- LBRRIT2390
- · Replies 1 ·
Electric Field in Concentric Spheres
- aifan27
- · Replies 4 ·
Electric Potential: Solving for Center of Sphere
- collegeconfid
- · Replies 1 ·
A diatomic ideal gas such as air..
- Physics321
- · Replies 5 ·
Thermos Coffee Cooling: What is the Final Temperature?
- Saladsamurai
- · Replies 2 ·
Finding gravity on Planet X from a string, a weight, and frequency
- LBRRIT2390
- · Replies 2 ·
Net Electrostatic Force on Four Charges at the Corners of a Square
- seb26
- · Replies 1 ·
Rotation Rate of a Generator Coil
- lampshader
- · Replies 5 ·
Tension in two ropes supporting a hanging weight
- mybrohshi5
- · Replies 3 ·
Understanding Gauss's Law and Solving for E(P) and phi(P)
- lidl
- · Replies 3 ·
Three-Phase System: RMS Phase Voltage Magnitude 230V, Zg=5+j5, 30+j30 Loads
- noobie!
- · Replies 1 ·
Net force on q2 from q1, q3, and q4 at corners of a square
- NewbAtPhysics
- · Replies 5 ·