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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Time required to build enough charge for an electric arc
- 12emerta
- · Replies 3 ·
Why can force components be negative if they're scalars?
- alkaspeltzar
- · Replies 22 ·
Newtons law Dynamics Question 4
- Nelonski
- · Replies 10 ·
Significant figures with multiplication
- ikihi
- · Replies 4 ·
Grade 12 Physics: When Equation = 0
- j-fusion
- · Replies 2 ·
RL circuit with 24 V battery, 5 mH coil and 6 Ω resistor
- member 392791
- · Replies 3 ·
High temperatures, nucleons, early universe
- Cogswell
- · Replies 1 ·
Newtons laws, dynamics questions
- Nelonski
- · Replies 1 ·
Worded Problem, Probability Density, quantum mechanics
- Cogswell
- · Replies 20 ·
Net displacement with 3 figures
- ikihi
- · Replies 7 ·
Showing work is path independent
- hellocello
- · Replies 6 ·
Why Is My Calculation of i1 Using KCL and Ohm's Law Incorrect?
- xlu2
- · Replies 1 ·
Finding currents using Kirchhoff's current law in the circuit
- xlu2
- · Replies 6 ·
Net displacement problem with two triangles
- ikihi
- · Replies 15 ·
Circuit analysis is this correct?
- Questions999
- · Replies 18 ·
Force and acceleration in object at rest
- blueberryfive
- · Replies 3 ·
Can you guys check these calculations for me
- bobsrevenge999
- · Replies 1 ·
Why Do the Calculated Mesh Currents Not Balance Power in Each Loop?
- xlu2
- · Replies 7 ·
Electric Potential and Electric Energy
- totallyclone
- · Replies 3 ·
Find the percentage uncertainty of a wooden block
- agentlee
- · Replies 2 ·
How to Solve Circuit Nodal Analysis for Vx?
- xlu2
- · Replies 4 ·
Lenz's law and conservation of energy
- annie122
- · Replies 28 ·
Height of fluid and Bernoullis equation
- radiator0505
- · Replies 2 ·
Turning effects, moments, levers, determing the magnitude of the force
- lolyland
- · Replies 4 ·
Kinematics of three runners in a race
- bkraabel
- · Replies 8 ·
Two objects accelerate from rest with the acceleration of Object A twi
- needingtoknow
- · Replies 7 ·
How Should the Parabolic Dish Be Aligned for Optimal Radio Wave Reception?
- rqyytrf
- · Replies 6 ·
Why is power delivered negative while power absorbed is positive?
- Mdhiggenz
- · Replies 3 ·
Error in my textbook? scientific notation conversion
- ikihi
- · Replies 5 ·
How Much Energy is Stored in a 1.5 V Battery with a Rating of 1,800 mAh?
- aChordate
- · Replies 1 ·
Change in watts and power dissipated
- aChordate
- · Replies 8 ·
Finding internal resistance from 2 circuits
- BathroomUser
- · Replies 9 ·
Velocity-Dependent Resistive forces
- chief114
- · Replies 12 ·
Circuit analysis is this correct?
- Questions999
- · Replies 2 ·
Energy Needed to Evaporate Water at 289.1 torr: Table of Pressures
- oldandcurious
- · Replies 1 ·
Magnetic field at centre and inside the toroid
- Saitama
- · Replies 6 ·
Speed of wave from wave equation.
- back2square1
- · Replies 5 ·
Lightbulbs and power/resistance
- annie122
- · Replies 4 ·
Charge on Capacitors in Series with 24V Potential Difference
- gralla55
- · Replies 2 ·
Finding catapult arm velocity using conservation of energy
- kervyn
- · Replies 4 ·
Increase in Internal Energy of a gas during compression
- Vegie
- · Replies 10 ·
Is Radiation the Primary Method of Heat Transfer in a Brick Oven?
- zoiberg137
- · Replies 5 ·
Confirming Faraday's Law - interference in measurement.
- peripatein
- · Replies 8 ·
How Does String Length and Tension Affect Wave Frequency and Harmonics?
- pakman127
- · Replies 3 ·
How does resistance change with temperature for Ohmic conductors and filaments?
- GingerPrince
- · Replies 1 ·
Why are the bass notes of a car radio heard by people on the street an
- needingtoknow
- · Replies 2 ·
What is the Path of a Cricket Ball During a Bowler's Run Up?
- eejpama
- · Replies 4 ·
Circuit Analysis: Solving for i Using Nodal Potential Method
- Questions999
- · Replies 1 ·
Commutator of position and derivative operators
- Cogswell
- · Replies 1 ·
Where Do I Begin? Overcoming Fear and Building Foundations in Physics
- noork85
- · Replies 6 ·
Finding current density given B-field
- Saitama
- · Replies 6 ·
How to subject the PR2 from a given equation?
- PA3040
- · Replies 6 ·
Ray diagrams for an astronomical telescope
- [KNIGHT]
- · Replies 2 ·
Ampere's Law-cylindrical shell
- Krikri
- · Replies 4 ·
A Beam of rectangular cross section 200mm deep and 100mm wide
- forexpipz
- · Replies 1 ·
Currents in a Wire and a Cylindrical Shell
- CoolBeanz99
- · Replies 5 ·
Why doesn't an electron's velocity change moving from low to high potential?
- san203
- · Replies 7 ·
Capacitance value between two conducting plates.
- beyondlight
- · Replies 12 ·
Find various voltages for the following circuit
- skyturnred
- · Replies 11 ·
Doppler Effect (Sound) - Source moving away from the Observer
- Armenio
- · Replies 8 ·
Coefficient of friction for 3 kg block on 30° incline
- 462chevelle
- · Replies 18 ·
Simple temperature conversion problem
- coolbyte
- · Replies 2 ·
How Far Can a Piston Fall Down a 100-Foot Cylinder?
- Thomas38740
- · Replies 8 ·
Uniform Circular Motion Question (Mechanics/Physics I)
- adamwest
- · Replies 2 ·
Solving for distance with frictionless inclined plane
- physicsballer2
- · Replies 4 ·
Nissan Leaf charging current and cost calculation
- nchin
- · Replies 5 ·
Newtons third law question- Action reaction pair
- Nelonski
- · Replies 1 ·
Free body diagram of a person in an accelerating elevator
- Nelonski
- · Replies 1 ·
Solving Work and Force of Wagon and Child
- physicsballer2
- · Replies 11 ·
Solving for inertia and angular speed
- physicsballer2
- · Replies 3 ·
How Does Weight Impact Momentum and Kinetic Energy in Air Track Experiments?
- physicsguru97
- · Replies 3 ·
Do magnets attract all metals, and is the speed of light in a water
- x86
- · Replies 6 ·
Calculating Energy of Two Masses on a Spring
- bessletama
- · Replies 1 ·
Electron entering a magnetic field
- Saitama
- · Replies 7 ·
Calculate Capillary Depression of Mercury in Glass Tube
- v_pino
- · Replies 3 ·
Potential Energy and Work done to lift object distance h
- physicsballer2
- · Replies 1 ·
Calculating Gravity with Pendulum - Factors of influence
- MassivePhysics
- · Replies 4 ·
Finding direction angles α, β, γ for a 3D vector
- whynot314
- · Replies 1 ·
Baseball change of direction Force and Impulse
- physicsballer2
- · Replies 2 ·
Determining which wing tip is positive in an aeroplane's induced EMF
- kingstar
- · Replies 5 ·
When Magnetic field is suddenly switched off
- AGNuke
- · Replies 13 ·
2 questions about waves (interference, resonance)
- coconut62
- · Replies 4 ·
Finding tensions and forces in rotational equilibrium problem
- Repolar
- · Replies 2 ·
Solving for Vr and VL in an RLC Circuit
- k31453
- · Replies 25 ·
Two particles moving in x-y plane with vector velocities
- FaraDazed
- · Replies 4 ·
A farsighted man with eyeglasses problem
- KendrickLamar
- · Replies 3 ·
What is the correct orientation for calculating emf using Faraday's law?
- gralla55
- · Replies 17 ·
What is the magnitude and difrection of the acceleration?
- shin777
- · Replies 1 ·
Car rolling through vertical loop on track
- AgentRedfield
- · Replies 10 ·
Potential Differences and Currents in a Diamond Circuit
- . Arctic.
- · Replies 8 ·
Graphs of Frequency for Car Moving in a Circle
- Knightycloud
- · Replies 24 ·
Induced Current Problem(Electromagnetism)
- pjwasz
- · Replies 6 ·
What is the Magnetic Field Inside a Cylindrical Cavity in a Conductor?
- Saitama
- · Replies 10 ·
Can the Impedance of Series RC and Parallel RL Circuits be Equal with Same R?
- phantomfx8192
- · Replies 1 ·
Find current ix through 10 kohm resistor given circuit with 5V source
- xlu2
- · Replies 7 ·
Nonuniform Circular Motion - Find Maximum Total Acceleration
- LovePhys
- · Replies 3 ·
Find the photoelectric work function for this metal
- icelated
- · Replies 6 ·
RLC series circuit resonance problem: frequency, reactance, impedance
- k31453
- · Replies 1 ·
Mechanics Problem with I/J vectors
- FaraDazed
- · Replies 3 ·
Practice Finals Multiple Choice
- Jaymo3141
- · Replies 2 ·