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 You Determine Atomic Distance from Density and Molar Mass?
- Azzy42
- · Replies 1 ·
How Is the Formula for Induced Current in a Coil Derived?
- pkossak
- · Replies 9 ·
Calculating the Heat Required to Melt Lead from 25 oC to 328 oC
- physicskillsme
- · Replies 6 ·
Double-slit experiment of Young
- ntk
- · Replies 5 ·
How can you calculate the power intercepted by a planet from a distant star?
- haki
- · Replies 2 ·
Solving Horizontal Force of Screw on Shelf Bracket
- Jacob87411
- · Replies 7 ·
Finding the Required Force for Rotational Motion Problem
- N_L_
- · Replies 3 ·
Simple Harmonic Motion of a block
- courtrigrad
- · Replies 4 ·
Calculating Energy in a 10μF Capacitor Charged to 24V
- dan greig
- · Replies 5 ·
What Happens to Liquid Height in Short Capillary Tubes?
- geniusprahar_21
- · Replies 2 ·
Solving Kirchoff's Rules for R1=10 Ohms, R2=15 Ohms, R3=5 Ohms
- wazzup
- · Replies 5 ·
How Do You Calculate the Release Speed of a Basketball Shot?
- ctlpsl
- · Replies 2 ·
Parallel Plate Capacitor and distance
- Trista
- · Replies 4 ·
Forces question - acceleration of a rocket
- QueenFisher
- · Replies 10 ·
Question Involving angular and linear motion and friction.
- Dave_George
- · Replies 14 ·
Calculating Wheel Forces on a Car with a Center of Mass Problem
- Jacob87411
- · Replies 6 ·
Determining the Net Charge on a Suspended Ball in an Electric Field
- LezardValeth
- · Replies 8 ·
How Much Dry Steam Is Required to Melt Ice in an Open System?
- chopper
- · Replies 1 ·
How Does Object Shape Influence Water Flow Patterns?
- ArielGenesis
- · Replies 1 ·
Math for Astrophysics & Quantum Physics: A Beginner's Guide
- Operation Theta
- · Replies 5 ·
Checking Currents in a Multi Loop Circuit
- RadiationX
- · Replies 6 ·
What are the formulas for calculating acceleration in different scenarios?
- kaaan
- · Replies 3 ·
How Does Faraday's Law Explain Induced Current in a Changing Magnetic Field?
- pkossak
- · Replies 1 ·
Which Metal Melts in Your Hand?
- physicskillsme
- · Replies 4 ·
Capacitors and the time constant
- dan greig
- · Replies 13 ·
Calculating Induced EMF from AM Radio Station at 4 Miles Away
- thenewbosco
- · Replies 6 ·
Doppler Effect change in the frequency Question
- gr3g1
- · Replies 1 ·
Looking for Challenging Physics Exercises? Any Recommendations?
- fisico
- · Replies 2 ·
Rewriting Equations with Derivatives: A Quick Guide
- Jess1986
- · Replies 2 ·
Mechanics Tutorial: Solving Problems with Acceleration and Velocity
- robwat22
- · Replies 4 ·
Problem Involving Exponentials (Sound)
- richnfg
- · Replies 4 ·
Physics & Hiking: Sources Needed
- BronzeWolf
- · Replies 1 ·
What is the Average Speed of a Plane?
- Huskies213
- · Replies 3 ·
How do u find the height of an object thrown straight up
- dcgirl16
- · Replies 9 ·
Spring compression with masses in motion
- scavok
- · Replies 2 ·
Cantor's Infinity and the Concept of Sets: Understanding the Comparison of Sizes
- SimonA
- · Replies 6 ·
Spring constant varies with maximum velocity
- endeavor
- · Replies 1 ·
What is the Magnitude of the Force on a Wire in a Uniform Magnetic Field?
- Punchlinegirl
- · Replies 6 ·
Is the Motion of Particle P Simple Harmonic?
- mr bob
- · Replies 4 ·
Calculating Frequency of Oscillation for Different Masses on a Spring
- endeavor
- · Replies 2 ·
Electric Field Basics: Understanding & Lines
- heelp
- · Replies 2 ·
How much work was done aginst friction?
- xc630
- · Replies 2 ·
Help - energy of a photon :-/
- Yael
- · Replies 2 ·
Can Time Be Considered a Constant in Extra Dimensional Universes?
- SimonA
- · Replies 8 ·
Making a Plum-Bob & Its Uses: Explained!
- celco
- · Replies 1 ·
Evaporation is a cooling process?
- AzMaphysics
- · Replies 3 ·
What Potential Difference Between Plates Causes a 30° Thread Angle?
- ovoleg
- · Replies 7 ·
Ideal Gasses, Double-Layered floating objects, and immersion in oil
- brop52
- · Replies 1 ·
What Happens to White Light in a Pyramid When Submerged in an Aquarium?
- smallbadwolf
- · Replies 1 ·
Simple Think Critically and Explain Question
- emma123
- · Replies 6 ·
How Does Magnetic Force Affect a Charged Metal Ball in Motion?
- Punchlinegirl
- · Replies 1 ·
Calculating Kinetic Energy in a Pulley System
- Alt+F4
- · Replies 11 ·
Energy in EM Waves problem (finding sun power output from EM wave intensity)
- confusedbyphysics
- · Replies 6 ·
Why did the current go follow this branch instead the path of least resistance?
- mr_coffee
- · Replies 8 ·
Minimum Speed for Pendulum Bob to Complete Vertical Circle
- Tyst
- · Replies 4 ·
The Doppler Effect and Electromagnetic Waves
- BoogieL80
- · Replies 7 ·
Driven RL circuit, why at infinity is this the current 2, and yet at 0+, its 0?
- mr_coffee
- · Replies 4 ·
A Couple More Simple Think critically and Explain Questions
- emma123
- · Replies 3 ·
How to Compute Highest Energy Photon in Hydrogen Spectral Series?
- Yael
- · Replies 1 ·
Does Launching a Projectile at 45 Degrees Alter Its Initial Velocity?
- tuyop
- · Replies 4 ·
Prof said one thing, book says another. R/L source-free circuit, pic included
- mr_coffee
- · Replies 2 ·
Source free RL circuit confusion When this switch closes, does the current end?
- mr_coffee
- · Replies 2 ·
Help Solving Physics Test with Mat Pulling Exercise
- PrimeTime89
- · Replies 15 ·
What do i need to explain to show how an induction motor works?
- delfick
- · Replies 1 ·
Surface Area Cooling Laws for a Physics Science Fair Experiment
- _BaBy_PhAt_
- · Replies 4 ·
How can I derive the relativistic Doppler formula?
- grounded
- · Replies 6 ·
Help Problem on INCLINED planes.
- byronsakic
- · Replies 1 ·
Can someone tell me if i'm using the right method? More wave fun
- mr_coffee
- · Replies 9 ·
Calculating Frequency and Wavelength of a Sinusoidal Wave on a String
- mr_coffee
- · Replies 7 ·
Radial Force on Railway Engine of 120 Tons at 25mph
- John O' Meara
- · Replies 1 ·
Can Oscilloscope Measurements Show Resistance Impact on RLC Circuit Damping?
- batshwa
- · Replies 2 ·
Calculating Gas Mass for Spacecraft Course Change
- rubrboots
- · Replies 2 ·
What forces affect a lawnmower being pushed at a constant speed?
- rachael
- · Replies 3 ·
What is the Magnitude of Acceleration?
- rachael
- · Replies 4 ·
Proving Equal Proportionality Constant for Mutual Induction in Two Coils
- DWigs87
- · Replies 3 ·
Simple Harmonic Motion and frequency of a spring
- kidia
- · Replies 3 ·
Solving an RLC Circuit: Seeking Help to Begin
- brad sue
- · Replies 1 ·
How Can R=2f Be Proven in Optics?
- NiuEr
- · Replies 2 ·
Solve a Billiard Ball Physics Problem with Spin and Momentum | 210 g Mass
- Metropolis
- · Replies 12 ·
How High is an Object When Its Speed is 27% of Escape Velocity?
- jcais
- · Replies 15 ·
Looking for some help with static electricity
- shanktank
- · Replies 6 ·
Heavy cart not moving but being pulled
- damitr
- · Replies 6 ·
Solve Momentum Question: 2000 kg Hammer and 400 kg Stake
- Firestrider
- · Replies 16 ·
Some problems(electric field.electric potential)
- maria curie
- · Replies 3 ·
Acceleration of a Car on a Frictionless Ramp
- Jacob87411
- · Replies 6 ·
How to Calculate Gravitational Field Strength at 400000m from Earth?
- Harmony
- · Replies 2 ·
Single equation with 2 unknowns
- KateO
- · Replies 2 ·
My fluid dynamic project, i need explenation
- ArielGenesis
- · Replies 3 ·
Electric potential problem ?
- ngkamsengpeter
- · Replies 3 ·
Current Increase When Connecting Capacitor to Resistor
- ngkamsengpeter
- · Replies 21 ·
Stuck on find the frequncey and max speed of a wave, urnt
- mr_coffee
- · Replies 4 ·
Impulse in a flywheel-to-flywheel situation
- swedish_lunacy
- · Replies 2 ·
Does Bohr Model Contradict Classical Physics?
- Yael
- · Replies 1 ·
Sports on Moon: Physics Projects for Future NASA Missions
- Deftones
- · Replies 7 ·
Optimize Your Rooftop Space with Aquaponics - A Step-by-Step Guide
- utsharpie
- · Replies 3 ·
Calculating Amplitude and Phase for Superimposed Harmonic Oscillators
- kidia
- · Replies 1 ·
Neon Sign Light: Continuous Spectrum or Few Colors?
- Yael
- · Replies 7 ·
Calculating Acceleration of a Barge Being Pulled by a Horse Along a Canal
- Pirang
- · Replies 5 ·
Magnetic Field Help - Physics Problem Solutions
- Camronnba
- · Replies 5 ·
Collisions in One and Two Dimensions
- helen3743
- · Replies 2 ·