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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Voltage drop and current for each resistor
- alan1592
- · Replies 8 ·
Finding pendulum length from period and correct angular frequency equation
- musicfairy
- · Replies 8 ·
Work with Friction: Calculating Force & Angle
- dator
- · Replies 3 ·
Difference between Maxwell-Boltzmann and Maxwell Distribtion?
- Lavace
- · Replies 1 ·
The Time Ratio of Objects A and B with Constant Power: How Do They Compare?
- gaobo9109
- · Replies 3 ·
Is the Work-Energy Theorem Applicable to Satellite Orbital Movement?
- jwu
- · Replies 4 ·
Ball being shot out of a spring gun - Velocity
- mybrohshi5
- · Replies 3 ·
Voltage in a 2 battery series circuit
- Dart82
- · Replies 8 ·
Simple Harmonic Motion on an air track
- CloCon
- · Replies 2 ·
How much work was done to overcome friction?
- Lil_Aziz1
- · Replies 6 ·
Calculating EMF Around a Square in a Magnetic Field
- gadje
- · Replies 4 ·
Double integral with Jacobian: u=x²-y², v=2xy
- bon
- · Replies 7 ·
Wind direction and velocity from observer moving east
- AquaAqua
- · Replies 5 ·
Kinetic energy of alpha particle during decay
- senan
- · Replies 1 ·
What is the average density and free-fall acceleration of a white dwarf?
- roam
- · Replies 1 ·
Vector Velocity and Coulomb's Law
- sami23
- · Replies 2 ·
Proving (∂T/∂V)s = -(∂P/∂S)v from the first law
- bon
- · Replies 1 ·
What is the correct approach for solving thermodynamics questions?
- Paymemoney
- · Replies 6 ·
Understanding Discrete Quantities in Electrical Charge
- fallen186
- · Replies 2 ·
Finding clapper rod length for a bell to ring silently
- anubis01
- · Replies 7 ·
What is the force of friction on a 50 gram coin on a turntable?
- mybrohshi5
- · Replies 2 ·
Chain with 2 links lifted vertically - Force
- mybrohshi5
- · Replies 7 ·
Current using kirchhoff's loop rule
- 8614smith
- · Replies 1 ·
Finding electric field magnitude from changing magnetic field
- qwerty11
- · Replies 1 ·
Throwing a dart from a roof - Velocity
- mybrohshi5
- · Replies 4 ·
Object in free fall - Velocity
- mybrohshi5
- · Replies 3 ·
What is the current through resistor 2 in a series circuit?
- alan1592
- · Replies 3 ·
Calculating Induced EMF: 50 cm^2 to .005 M^2
- Gemy4
- · Replies 4 ·
Simple Problem. Finding Forces using free body diagrams.
- Ebola_V1rus
- · Replies 2 ·
How to Calculate M in a Simple Math Equation
- qwerty11
- · Replies 1 ·
Simple math im not understanding
- qwerty11
- · Replies 5 ·
Magnetic Field Calculation for Point P in a Current-Carrying Wire Configuration
- scoldham
- · Replies 12 ·
How Do You Calculate Degrees of Freedom in Diatomic Gases Like Oxygen?
- vorcil
- · Replies 4 ·
Electric potential inside non-conducting sphere
- irnubcake
- · Replies 4 ·
How Does Constant Power Affect Object Motion Compared to Constant Force?
- gaobo9109
- · Replies 3 ·
Planar rigid body kinematics practice problems
- Gnat85
- · Replies 1 ·
Why is the quality factor Q equal to the capacitor current divided by source current?
- sanazy24
- · Replies 1 ·
Interactive physics demo for elementary school students
- spiderdan
- · Replies 3 ·
Calculating Min. Stopping Dist. of Lorry Carrying Crate w/ Coef. of 0.3
- johnny_702
- · Replies 12 ·
How to find amplitude from SHM part c
- affirmative
- · Replies 4 ·
Calculating the Maximum Energy Stored in a Compressed Spring
- Stroodle
- · Replies 1 ·
Finding the Spring Constant for Bungee Jumping
- wangking
- · Replies 1 ·
How Do You Calculate the Width of a Slit Using Single-Slit Diffraction Data?
- Yaaaldi
- · Replies 1 ·
Comparing Aluminum & Copper Deflection Angles
- Loligo
- · Replies 3 ·
What Compression Level Gives Maximum Velocity to a Sliding Box on a Spring Ramp?
- xstetsonx
- · Replies 18 ·
Simple Spectrometer and Spectroscopy Question
- SaintsTheMeta
- · Replies 2 ·
Unit conversion litres to gallons or vice versa
- 1irishman
- · Replies 2 ·
Doppler effect and Resonance-relationship?
- smhni
- · Replies 2 ·
Find the moment of force P about point O
- drkidd22
- · Replies 3 ·
How Do You Derive the Normal and Static Frictional Forces on an Inclined Plane?
- acspin
- · Replies 3 ·
Volume of Balloon at 23K and 299K
- jagged06
- · Replies 3 ·
How Long Does It Take to Charge a 195 µF Capacitor to 125 Volts?
- boneill3
- · Replies 2 ·
Pressure on a button with 30N force and 1cm radius
- alsemmelink
- · Replies 1 ·
Two masses attached to spring w/ pulley
- peachfuzz
- · Replies 1 ·
Calculating Momentum of a Thrown Object at Maximum and Halfway Heights
- zafer
- · Replies 5 ·
How deep does a stream appear due to refraction?
- helpphysics
- · Replies 3 ·
Electric Potential-Work Problem
- scoldham
- · Replies 3 ·
Calculating Force on an Aluminum Beam with Temp Change
- theskyisgreen
- · Replies 4 ·
Finding the Value of b in Gauss's Law Charge Problem
- scoldham
- · Replies 18 ·
What Angle Should Bead 2 Be Positioned for Desired Electric Field?
- scoldham
- · Replies 8 ·
Enthalpy and entropy change from equation of state v=(RT/p)-C/T³
- sac.lalit
- · Replies 1 ·
Equilibrium of weight on pulley
- drkidd22
- · Replies 3 ·
Does launch angle proportionately affect projectile displacement?
- josh1234
- · Replies 6 ·
Finding velocity and direction of unmeasured ball in elastic collision
- thereddevils
- · Replies 1 ·
Spring and maximum compression time
- smhippe
- · Replies 9 ·
Car braking and ratio of force of friction
- smhippe
- · Replies 3 ·
Work Done by Air pressure difference
- just.karl
- · Replies 3 ·
Energy efficiency of torsion Catapult
- lovemake1
- · Replies 1 ·
Molecular movement, potential energy and angular frequency
- smhippe
- · Replies 2 ·
Finding current through batteries with multiple resistors
- STEF2098
- · Replies 7 ·
Calculating Electric Potential Energy of a Charge Configuration
- squintyeyes
- · Replies 1 ·
Location of maximum desctructive intereference
- Gravitino22
- · Replies 2 ·
Bernoulli's Equation - Efflux question
- sb_4000
- · Replies 4 ·
Why Does Kinematics Fail in Calculating Fmax in This Physics Problem?
- xstetsonx
- · Replies 2 ·
How Far Did They Fall in Meters?
- 1irishman
- · Replies 3 ·
Solving Pressure: P = 7.35N / (.24m x .2m)
- jefgreen
- · Replies 5 ·
What Is the Angular Velocity of a Complex Rigid Body Assembly?
- spdowind
- · Replies 2 ·
Does This Material Follow Ohm's Law?
- physicsphobic
- · Replies 6 ·
Ideal Gas Law Problem - Environmental Physics
- lachy
- · Replies 13 ·
Angle of a trajectory required to make it go a specified distance?
- dimmermanj
- · Replies 1 ·
Lenses- magnification adn focal length
- PhysicsChick8
- · Replies 8 ·
Harmonic traveling wave physics
- bon
- · Replies 2 ·
Integrating Shell Collapse Velocity Equation for Free-Fall Time Calculation
- TheTourist
- · Replies 1 ·
Solving Number of Molecules for Entropy of 1.181x10^-12 J/K
- samueltak
- · Replies 1 ·
Forces and Tensions: Two Masses Suspended from Cable System
- drkidd22
- · Replies 1 ·
Electrical Circuit/Electrical Power Problem
- lucas101
- · Replies 2 ·
Calculating Speed of Object in Rotational System with Frictionless Bearings
- phychal
- · Replies 1 ·
Thinking about electronic collisions with hydrogen.
- IHateMayonnaise
- · Replies 1 ·
Calculating Volume of Helium Balloon at Different Temperatures
- jagged06
- · Replies 1 ·
Minimum acceleration for car B to overtake before meeting car A and C
- arakram94
- · Replies 1 ·
What Attracts a Solenoid's Northern End: A Bar Magnet's Polarities?
- Eleventh_Hour
- · Replies 1 ·
Simple Photoelectric Effect Conceptual Question
- fallen186
- · Replies 1 ·
Can UV and Sound Waves Be Polarized?
- m.medhat
- · Replies 2 ·
Volume of 1 mole of gas at 356.2 K and 1 atm
- hackett5
- · Replies 1 ·
Inclined plane translational velocity
- davidelete
- · Replies 5 ·
Calculating Spring Compression and Muzzle Velocity in Projectile Motion
- bacon
- · Replies 2 ·
Quantum aspect of light waves with connection with Youngs Double Slit Experiment
- dc5itr888
- · Replies 4 ·
Verify my moment calculation
- drkidd22
- · Replies 10 ·
Fmax=36.4NWhat is the maximum force exerted on a bullet by a wooden block?
- xstetsonx
- · Replies 5 ·
Static friction and car and unbanked curve
- xstetsonx
- · Replies 12 ·