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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Tension and acceleration in a system with two pulleys
- yitriana
- · Replies 2 ·
Magnitude of Acceleration after initial impulse?
- jumpingjack90
- · Replies 4 ·
Calculating Gravitational Field Constants for Mars, Jupiter, and Mercury
- Dyna
- · Replies 2 ·
How Can Surface Charge Density Equal bcos(θ)?
- jeff1evesque
- · Replies 4 ·
Electric Field and the position of a charge
- dalson
- · Replies 3 ·
Potential difference between two points located at distances
- jeff1evesque
- · Replies 4 ·
What Are Examples of Different Forces Systems in Daily Life?
- A|bert
- · Replies 2 ·
Understanding Capacitors and Reactance in AC Circuits
- jeff1evesque
- · Replies 3 ·
Locate the position of the image.
- mba444
- · Replies 4 ·
AC Circuits II: AC Power Generator
- OsDaJu
- · Replies 2 ·
Power of a car, time distance speed mass
- abruski
- · Replies 7 ·
Confusing Elastic and Inelastic Collisions :S
- rice1am
- · Replies 8 ·
Finding Vrms given pressure, density and Temperature
- sckeen1988
- · Replies 5 ·
What is the Angular Frequency of a Bent Wire Over a Pivot?
- vladimir69
- · Replies 4 ·
Why doesn't speed of sound decrease with density at constant temperature?
- leena19
- · Replies 2 ·
Calculating Charge Magnitude for Nickel Coin Using Coulomb's Law
- tchounkovskii
- · Replies 8 ·
Marble shot from spring on lab bench travels how far?
- Matt1234
- · Replies 6 ·
What is the Impedance and Power Dissipation in an AC Circuit with a Generator?
- OsDaJu
- · Replies 5 ·
What is the speed of sound and tension in a vibrating harpsichord string?
- tag16
- · Replies 2 ·
Making Connections-I clearly do not know how
- IAmLost
- · Replies 6 ·
What is the magnetic flux through the loop
- jlmessick88
- · Replies 7 ·
How long will it take until gravity causes the rocket to stop?
- Max CR
- · Replies 4 ·
How to solve vector addition problems for physics?
- desi_chick
- · Replies 3 ·
Electric field at a point (charged ring)
- grantrudd
- · Replies 4 ·
How Do You Calculate Friction and Motion for a Grocery Cart on Asphalt?
- Dyna
- · Replies 8 ·
Use ray tracing to determine the location of the image
- jlmessick88
- · Replies 7 ·
Power and Energy - energy in a tidal power plant
- shaools
- · Replies 9 ·
How Does a Change in the Power of Accommodation Indicate Vision Defects?
- prat
- · Replies 1 ·
Direction of electric and magnetic forces on a charged particle
- jlmessick88
- · Replies 6 ·
Conservation angular momentum, difficult problem
- Puchinita5
- · Replies 12 ·
Energy Conservation in a Vertical Spring System
- Matt1234
- · Replies 7 ·
How does gravity affect upwards motion?
- Stripe
- · Replies 13 ·
Converting 5 m/s² to km/hr² and ft/hr²
- BlueOwl
- · Replies 1 ·
How Long Can You Pull a Tablecloth Before a Glass Falls Off?
- physicsnoob93
- · Replies 1 ·
Find Min Force for Window Washer: Ma = F + 2T_1 - Mg
- clarineterr
- · Replies 1 ·
Pulley Systems: Tension in Strings Holding m1 and m2
- physicsnoob93
- · Replies 1 ·
Inertia/angular momentum, not sure why this is wrong
- Puchinita5
- · Replies 2 ·
Electric field over finite length rod
- exitwound
- · Replies 12 ·
Using Trigonometry to Solve for T₁ in a System of Equations
- flyingpig
- · Replies 9 ·
Maximum Compression of a Spring in a Collision?
- planck42
- · Replies 3 ·
Interference in 2D (wavefronts)
- ~ak~
- · Replies 3 ·
Calculating Y-Component of Acceleration for a Thrown Ball
- clarineterr
- · Replies 2 ·
Finding Time, Distance, and Velocity
- Heat
- · Replies 27 ·
Measuring average power during a jump
- RoyalCat
- · Replies 30 ·
What is the total translational kinetic energy of the gas molecules
- tag16
- · Replies 1 ·
Calculating Pressure of an Ideal Gas Using the PV=nRT Equation
- tag16
- · Replies 8 ·
If kinetic energy is constant, must momentum be constant?
- leena19
- · Replies 10 ·
Kinematics(displacement and Velocity)
- BlueOwl
- · Replies 1 ·
Does an ice block increase relative humidity in the air above it?
- leena19
- · Replies 3 ·
Power consumption of a 60 W lightbulb at cold and hot resistance
- NikkiNik
- · Replies 7 ·
What is the unit normal for a cylinder?
- jeff1evesque
- · Replies 11 ·
2 Unknown Currents, 1 Unknown emf, and a little confusion to boot
- nonnynonny
- · Replies 1 ·
Finding maximum cannon range given one shot distance
- lauren333
- · Replies 6 ·
Rod on frictionless surface with off-center impulse
- eprparadox
- · Replies 1 ·
How Does a Ferris Wheel Ride Reveal Physics Principles?
- clarineterr
- · Replies 1 ·
What instant the force in the dipstick iz zero
- orlan2r
- · Replies 10 ·
Charge Flown Through Battery In Charging Capacitor
- ritwik06
- · Replies 20 ·
Calculating Torque on a Circular Coil in a Magnetic Field
- Maxwellkid
- · Replies 21 ·
Relative Velocity along a Straight Line problem
- lauren333
- · Replies 6 ·
Which Solution for Kaon Production in Proton-Proton Collisions Is Correct?
- m.medhat
- · Replies 10 ·
How many alpha particles strike a plane target in 8 seconds?
- typeinnocent
- · Replies 6 ·
Electric potential for a sphere of charge
- peaceandlove
- · Replies 3 ·
Electrically Neutral Object: Does Adding Positive Charge Affect Mass?
- unseenoi
- · Replies 4 ·
Heating water, gravitational potential energy, and work integral
- sponsoredwalk
- · Replies 10 ·
Find peak voltage across capacitor
- randomdude20
- · Replies 1 ·
Why is the exponent on the Stefan-Boltzmann law 2.78 in my experiment?
- ideasrule
- · Replies 1 ·
Diagram pressure forces over a body resting on an inclined surface
- orlan2r
- · Replies 4 ·
Help with 4 physics homework problems
- Nguyenfa.t
- · Replies 2 ·
How Do You Calculate the Number of Laser Pulses in a Run?
- artwork
- · Replies 4 ·
Resultant Force on a Conical Flask Filled with Liquid
- leena19
- · Replies 18 ·
What Is the Mass of the Late Arrival in the Hot-Air Balloon?
- pttest
- · Replies 4 ·
Conservation of Momentum difficulty
- dontcare
- · Replies 7 ·
Why does a Physics GRE book use p instead of ω in SHM equations?
- Dr. Mirrage
- · Replies 1 ·
SI units for Heat transfer equation
- jeff1evesque
- · Replies 5 ·
Pressure and volume of compressed air in a tube with a plunger
- Robert Alan
- · Replies 9 ·
Free body diagram for a block on an inclined plane
- Nguyenfa.t
- · Replies 10 ·
Electromagnetic Waves and Induction
- jlmessick88
- · Replies 11 ·
What current is needed in the solenoid’s wires?
- jlmessick88
- · Replies 4 ·
Dynamics question, test tommorrow
- Matt1234
- · Replies 1 ·
How far from the entrance will the beams of the different isotope ions end up?
- jlmessick88
- · Replies 1 ·
Angular Magnification for mirrors and lens
- jix
- · Replies 3 ·
Equilibrium of Three Positively Charged Beads
- define_normal
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What makes a set of units consistent?
- jaimieee
- · Replies 10 ·
Maximal theta given the coefficient of kinetic friction
- tkahn6
- · Replies 12 ·
Find the value of L. Answer in units of
- mba444
- · Replies 1 ·
What Is the Effective Current in an RLC Circuit with Given Parameters?
- mba444
- · Replies 2 ·
How Is the Magnetic Field Calculated Near a Current-Carrying Wire?
- SimonZ
- · Replies 2 ·
Force direction on charge Q2 from Q3 in three-charge system
- superjen
- · Replies 9 ·
What does curl of wind velocity equal in this pressure equation?
- jeff1evesque
- · Replies 9 ·
Calculating Force Magnitude on a Charge in a Multi-Charge System
- talaroue
- · Replies 4 ·
Is Velocity Conserved in a Falling Balls Collision Experiment?
- rahmatkat
- · Replies 2 ·
How Deep Is the Cavern if a Pebble Takes 1.8 Seconds to Hit the Water?
- domdom
- · Replies 1 ·
Newton's Law Problem: Calculating Acceleration on an Inclined Plane
- Smile101
- · Replies 5 ·
Equivalent Capacitance (Not in series or parallel)
- denniegst
- · Replies 16 ·
Minimum mass of box pulled by rope at 31 degrees
- Matt1234
- · Replies 5 ·
How to find force vector from kinetic energy without using F = ma
- RaStevey
- · Replies 13 ·
What Forces Act on a Charge at the Corner of a Rectangle?
- october2118
- · Replies 1 ·
Lead and glass rods at different temperatures with same length
- jmb07
- · Replies 3 ·
What is the Mass Density of Air at 1 atm and -50°C?
- jmb07
- · Replies 3 ·
Forces and elongation in three steel bars on rigid member K
- TA1068
- · Replies 2 ·